CN107306000B - Method and device for interface configuration - Google Patents

Abstract

The embodiment of the invention discloses a kind of methods of interface configuration, which is characterized in that the described method includes: the energization pins of any inserting surface send access signal to the power-supply controller of electric of terminal device when access device access；It indicates that pin receives the signal condition that the piece connecting with the socket selects controller to be forwarded according to the access device type of any inserting surface, identifies the device type of the access device, determine the working condition of any inserting surface.The embodiment of the present invention also discloses a kind of device of interface configuration simultaneously.

Description

Method and device for interface configuration

technical field

The present invention relates to the technical field of intelligent terminals, in particular to a method and device for interface configuration.

Background technique

With the rapid popularization of smart mobile terminals, users can access the Internet through smart mobile terminals and transmit various types of data. Therefore, users have higher requirements for the diversity of data interface functions of smart mobile terminals.

In the prior art, the smart mobile terminal is equipped with a data interface, such as a Micro Universal Serial Bus 2.0 (Micro USB 2.0, Micro Universal Serial Bus) interface, which is a 5pin (five metal pin contacts) interface solution. This interface provides the mobile phone with a charging function and a solution for data transmission with a computer and other equipment. It can also be connected to an external USB (Universal Serial Bus) device such as a mouse, keyboard, and U disk through an OTG (On The Go) cable. It can also output audio and video to monitors, TVs and other large-screen devices through the mobile terminal high-definition audio-visual standard interface (MHL, Mobile High-Definition Link) to standard high-definition multimedia interface (HDMI, High Definition Multimedia Interface) cable. However, this interface can only support the above-mentioned functions separately, and cannot support both USB and MHL functions at the same time. At the same time, the interface adopts a tongue-shaped design, which has a front and a back. The data cable plug must be aligned before it can be inserted, which is inconvenient for users.

Contents of the invention

In order to solve the above technical problems, the embodiments of the present invention expect to provide a method and device for interface configuration, which support USB and MHL functions at the same time, and the interface does not distinguish between front and back, which is convenient for users to use.

Technical scheme of the present invention is realized like this:

In a first aspect, an embodiment of the present invention provides a method for interface configuration, the method including:

When the access device is connected, the power supply pin of any insertion surface sends an access signal to the power controller of the terminal device;

According to the access device type indication pin on any of the insertion surfaces receiving the signal state forwarded by the chip select controller connected to the socket, identify the device type of the access device, and determine the any insertion surface working status.

In the above scheme, when only the first access device is connected to any insertion surface, and the any insertion surface is the first insertion surface, the type indication pin according to the access device type of the any insertion surface Receiving the signal status forwarded by the chip select controller connected to the socket, identifying the device type of the access device, and determining the working status of any insertion surface, including:

When the access device type indication pin on the first insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, the state of the MHL chip controller is suspended, the first access device is identified as a USB device, and the second access device is identified as a USB device. 1. The insertion surface enters the first USB working state;

When the access device type indication pin of the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the first access device is an MHL device, the first insertion surface enters the MHL working state;

When the access device type indication pin of the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the first access device is not an MHL device, device identification fails;

When the access device type indication pin on the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ , the first access device is identified as a USB device, and the first insertion surface enters a second USB working state.

In the above solution, when the second access device is connected to the other side of any insertion surface, and the other side of any insertion surface is the second insertion surface, the device for identifying the first access device After the type, also include:

When the second access device is connected, the power supply pin of the second insertion surface sends an access signal to the power controller of the terminal device;

According to the device type of the first access device, the access device type indication pin on the second insertion plane is connected to the second signal forwarded by the chip select controller;

Identify the device type of the second access device according to the state of the second signal forwarded by the chip select controller received by the access device type indicating pin of the second insertion plane, and determine the second insertion plane working status.

In the above solution, according to the device type of the first access device, the access device type indication pin on the second insertion surface is connected to the second signal forwarded by the chip select controller, including:

If the first access device has been identified as a USB device, the access device type indication pin on the second insertion surface is connected to the command transmission signal of the chip select controller and the MHL chip controller;

If the first access device has been identified as an MHL device, the access device type indication pin on the second insertion surface is connected to the air interface signal of the USB chip through the chip select controller.

In the above solution, the second signal status forwarded by the chip select controller received by the access device type indication pin on the second insertion plane identifies the device type of the second access device, and determines The working status of the second insertion surface includes:

The access device type indication pin of the second insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the working state of the second insertion surface;

The access device type indication pin of the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the device type of the second access device, and determines the device type of the second insertion surface. working status.

In the above solution, the access device type indication pin of the second insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the working state of the second insertion surface, including:

When the access device type indication pin of the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended, the access device type indication pin of the second insertion surface is disconnected Connection with the command transmission signal of the MHL chip controller;

When the access device type indication pin on the second insertion surface receives the command transmission signal voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the second access device is an MHL device, the second insertion surface enters the MHL working state;

When the access device type indication pin on the second insertion surface receives the command transmission signal voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the second access device is not an MHL device, the identification of the second access device fails;

When the access device type indication pin on the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller, the voltage is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ , the identification of the second access device fails.

In the above solution, the access device type indication pin on the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the second access device type, and determines the second insertion Surface working status, including:

If the second insertion surface identifies the USB device successfully, the second insertion surface enters the USB working state;

If the second insertion surface fails to identify the USB device, the access device type indication pin on the second insertion surface is disconnected from the USB chip.

In the above solution, when the first access device accesses any side, the second access device accesses the other side of any side, and the any side is the first insertion side, and the other side of the any side is the second insertion side. When facing, the method also includes:

When the first access device and the second access device are connected at the same time, the power supply pins of the first insertion surface and the second insertion surface send an access signal to the power controller of the terminal device;

The access device type indication pin on the first insertion surface is connected to the first signal forwarded by the chip select controller;

The access device type indication pin of the first insertion plane receives the first signal state forwarded by the chip select controller, identifies the device type of the first access device, and determines the working status of the first insertion plane;

According to the device type of the first access device, the access device type indication pin on the second insertion plane is connected to the second signal forwarded by the chip select controller;

Identify the device type of the second access device according to the state of the second signal forwarded by the chip select controller received by the access device type indicating pin of the second insertion plane, and determine the second insertion plane working status.

In the above scheme, the access device type indication pin of the first insertion plane receives the first signal state forwarded by the chip select controller, identifies the device type of the first access device, and determines the status of the first insertion plane. working status, including:

The access device type indication pin of the first insertion plane receives the command transmission signal state of the MHL chip controller through the chip select controller, and determines the first access device type of the first insertion plane;

When the first access device type of the first insertion surface is identified as a USB device, disconnect the connection of the access device type indication pin of the first insertion surface with the command transmission signal of the MHL chip controller;

The access device type indication pin of the first insertion surface is connected to the air interface of the USB chip through the chip select controller, and the first insertion surface enters the USB working state;

When the type of the access device on the first insertion plane is identified as an MHL device, keep the connection between the indication pin of the access device type on the first insertion plane and the command transmission signal of the MHL chip controller, the second An inserted surface enters the MHL working state.

In the above solution, the access device type indication pin of the first insertion plane receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the first access device type of the first insertion plane, including :

When the access device type indication pin on the first insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, the state of the MHL chip controller is suspended, the first access device is identified as a USB device, and the second access device is identified as a USB device. 1. The insertion surface enters the first USB working state;

When the access device type indication pin of the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the first access device is an MHL device, the first insertion surface enters the MHL working state;

When the access device type indication pin of the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the first access device is not an MHL device, device identification fails;

When the access device type indication pin on the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ , the first access device is identified as a USB device, and the first insertion surface enters a second USB working state.

In the above solution, according to the device type of the first access device, the access device type indication pin on the second insertion surface is connected to the second signal forwarded by the chip select controller, including:

When the first access device type is identified as a USB device, the access device type indication pin on the second insertion surface is connected to the command transmission signal of the MHL chip controller through the chip select controller;

When the type of the access device on the first insertion plane is identified as an MHL device, the indication pin of the access device type on the second insertion plane is connected to the command air interface signal of the USB chip through the chip select controller.

In the above solution, according to the state of the second signal forwarded by the chip select controller received by the access device type indication pin on the second insertion plane, the device type of the second access device is identified, and the The working status of the second insertion surface, including:

The access device type indication pin of the second insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the working state of the second insertion surface;

The access device type indication pin of the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the second access device type, and determines the working state of the second insertion surface .

In the above solution, the access device type indication pin of the second insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the working state of the second insertion surface, including:

When the access device type indication pin of the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended, the access device type indication pin of the second insertion surface is disconnected from the MHL The connection of the command transmission signal of the chip controller;

When the access device type indication pin on the second insertion surface receives the command transmission signal voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the second access device is an MHL device, the second insertion surface enters the MHL working state;

When the access device type indication pin on the second insertion surface receives the command transmission signal voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the second access device is not an MHL device, the identification of the second access device fails;

When the access device type indication pin on the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller, the voltage is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ , the identification of the second access device fails.

In the above scheme, the access device type indicating pin of the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the second access device type, and determines the type of the second insertion surface. working status, including:

If the second insertion surface identifies the USB device successfully, the second insertion surface enters the USB working state;

If the second insertion surface fails to identify the USB device, the access device type indication pin on the second insertion surface is disconnected from the USB chip.

In the second aspect, the embodiment of the present invention also provides an interface configuration device, the device includes: a sending module and a processing module; wherein,

The sending module is configured to send an access signal to any plug-in power controller facing the terminal device when the access device is connected;

The processing module is used for connecting any one of the insertion planes with the signal forwarded by the chip selection controller;

And, according to the state of the signal forwarded by the chip select controller connected to the socket received by any of the insertion planes, the device type of the access device is identified, and the working status of any of the insertion planes is determined.

In the above solution, the processing module is configured to identify the first access device as a USB device when the first insertion surface receives the command transmission signal state of the MHL chip controller through the chip select controller and the status is suspended, The first insertion surface enters the first USB working state;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is an MHL device, the first insertion surface enters the MHL working state;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is not an MHL device, the device identification will fail;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ, the first interface The input device is recognized as a USB device, and the first insertion surface enters a second USB working state.

In the above solution, the sending module is configured to, when the second access device is connected, send the access signal to the power controller of the second insertion-oriented terminal device;

The processing module is configured to connect the second insertion plane with the second signal forwarded by the chip selection controller according to the device type of the first access device;

And, according to the state of the second signal forwarded by the chip select controller received by the second insertion plane, the device type of the second access device is identified, and the working status of the second insertion plane is determined.

In the above solution, the processing module is configured to connect the second insertion plane with a command transmission signal of the chip select controller and the MHL chip controller if the first access device has been identified as a USB device;

And, if the first access device has been identified as an MHL device, then the second insertion plane is connected to the air interface signal of the USB chip through the chip select controller.

In the above solution, the processing module is used for the second insertion surface to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the working state of the second insertion surface;

And, the second insertion plane receives the air interface signal of the USB chip through the chip select controller, identifies the device type of the second access device, and determines the working state of the second insertion plane.

In the above solution, the processing module is configured to disconnect the second insertion surface from the MHL chip controller when the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended in the air. The connection of the command transmission signal;

And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first The second access device is an MHL device, and the second insertion surface enters the MHL working state;

And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the second access device is not an MHL device, the identification of the second access device fails;

And, when the voltage of the command transmission signal received by the MHL chip controller on the second insertion plane is pulled down through the chip select controller, and the pull-down resistance of the command transmission signal is not 1KΩ, the second Access device identification failed.

In the above solution, the processing module is configured to enter the USB working state on the second insertion surface if the second insertion surface successfully recognizes the USB device;

And, if the second insertion surface fails to identify the USB device, the second insertion surface disconnects from the USB chip.

In the above solution, the sending module is configured to send an access signal to the power controller of the terminal device on the first insertion surface and the second insertion surface when the first access device and the second access device are connected at the same time;

The processing module is configured to connect the first insertion plane with the first signal forwarded by the chip select controller;

And, the first insertion plane receives the first signal status forwarded by the chip select controller, identifies the device type of the first access device, and determines the working status of the first insertion plane;

And, according to the device type of the first access device, the second insertion plane is connected to the second signal forwarded by the chip selection controller;

And, according to the state of the second signal forwarded by the chip select controller received by the second insertion plane, the device type of the second access device is identified, and the working status of the second insertion plane is determined.

In the above solution, the processing module is used for the first insertion plane to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the first access device type of the first insertion plane;

And, when the first access device type of the first insertion surface is identified as a USB device, disconnect the first insertion surface from the command transmission signal of the MHL chip controller;

And, the first insertion surface is connected to the air port of the USB chip through the chip select controller, and the first insertion surface enters the USB working state;

And, when the access device type of the first insertion surface is identified as an MHL device, the connection between the first insertion surface and the command transmission signal of the MHL chip controller is maintained, and the first insertion surface enters the MHL work state.

In the above solution, the processing module is configured to identify the first access device as a USB device when the first insertion surface receives the command transmission signal state of the MHL chip controller through the chip select controller and the status is suspended, The first insertion surface enters the first USB working state;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is an MHL device, the first insertion surface enters the MHL working state;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is not an MHL device, the device identification will fail;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ, the first interface The input device is recognized as a USB device, and the first insertion surface enters a second USB working state.

In the above solution, the processing module is configured to, when the type of the first access device is identified as a USB device, connect the second insertion plane with a command transmission signal of the MHL chip controller through a chip select controller ;

And, when the type of the access device on the first insertion plane is identified as an MHL device, the second insertion plane is connected to the command air interface signal of the USB chip through the chip select controller.

In the above solution, the processing module is used for the second insertion surface to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the working state of the second insertion surface;

And, the access device type indicating pin of the second insertion plane receives the air interface signal of the USB chip through the chip select controller, identifies the second access device type, and determines the type of the second insertion plane. working status.

In the above solution, the processing module is used to disconnect the second insertion plane from the command of the MHL chip controller when the second insertion plane receives the command transmission signal of the MHL chip controller through the chip select controller. connection for transmitting signals;

And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first The second access device is an MHL device, and the second insertion surface enters the MHL working state;

And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the second access device is not an MHL device, the identification of the second access device fails;

And, when the voltage of the command transmission signal received by the MHL chip controller on the second insertion plane is pulled down through the chip select controller, and the pull-down resistance of the command transmission signal is not 1KΩ, the second Access device identification failed.

In the above solution, the processing module is configured to enter the USB working state on the second insertion surface if the second insertion surface successfully recognizes the USB device;

And, if the second insertion surface fails to identify the USB device, the connection device type indication pin on the second insertion surface is disconnected from the USB chip.

The embodiment of the present invention provides a method and device for interface configuration, modifying the metal pin contacts of the data interface socket and the plug, and designing the other side of the data line connecting the plug into a USB device and Forked line for MHL devices. It realizes the simultaneous support of USB and MHL functions, and the interface does not distinguish between front and back, which is convenient for users to use.

Description of drawings

Fig. 1 is a schematic structural diagram of a socket and a plug of an interface configuration device provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the connection between the interface configuration device plug and the device provided by the embodiment of the present invention;

FIG. 3 is a schematic diagram of the connection of the access device type identification circuit provided by the embodiment of the present invention;

FIG. 4 is a schematic flowchart of an interface configuration method provided by an embodiment of the present invention;

Fig. 5 is a schematic flowchart of determining the working state of the first insertion surface provided by the embodiment of the present invention;

FIG. 6 is a schematic flowchart of another interface configuration method provided by an embodiment of the present invention;

FIG. 7 is a schematic flow diagram of turning on the second signal provided by an embodiment of the present invention;

Fig. 8 is a schematic flowchart of determining the working state of the second insertion surface provided by the embodiment of the present invention;

Fig. 9 is a schematic flowchart of determining the working state of the second insertion surface as MHL provided by the embodiment of the present invention;

FIG. 10 is a schematic flow chart of determining that the working state of the second insertion surface is USB provided by an embodiment of the present invention;

FIG. 11 is a schematic flowchart of another interface configuration method provided by an embodiment of the present invention;

Fig. 12 is a schematic flowchart of determining the working state of the first insertion surface provided by the embodiment of the present invention;

Fig. 13 is a schematic flow chart of turning on the second signal provided by the embodiment of the present invention;

Fig. 14 is a schematic flowchart of determining the working status of the second insertion surface provided by the embodiment of the present invention;

FIG. 15 is a schematic structural diagram of an interface configuration device provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

Referring to FIG. 1 , it shows an interface device provided by an embodiment of the present invention. The interface device may include two parts: a socket and a plug. Wherein, the socket part is located on the terminal equipment, replacing the existing data interface of the terminal equipment, such as the MicroUSB 2.0 interface; the plug part is located at one end of the data line, and its metal pin points match the metal pin contacts of the socket part. Referring to Figure 2, it shows the other end of the data cable connected to the plug. The other end of the data cable is connected to the USB device on one side and the MHL device on the other side through the bifurcated line. The access position of the device is not fixed, and the two sides can be interchanged arbitrarily.

The existing data interface of the terminal device cannot simultaneously support the functions of the Universal Serial Bus (USB, Universal Serial Bus) and the mobile terminal high-definition audio-visual standard interface (MHL, Mobile High-Definition Link). MHL is an audio-visual standard interface for connecting portable consumer electronic devices. Using a signal cable, audio-visual signals can be presented on high-definition TV and other equipment through a standard high-definition multimedia interface (HDMI, High Definition Multimedia Interface) input.

Referring to the socket part of Fig. 1, it is different from the interface scheme of the existing Micro USB 2.0 interface 5pin (5 metal pin contacts), the embodiment of the present invention adopts the interface scheme of 10pin (10 metal pin contacts), both sides Each 5pin.

Take the socket part in Figure 1 as an example. The socket is divided into two sides and has two insertion surfaces. The pins on each side are numbered sequentially with 1, 2, 3, 4, and 5. The numbering order of the interface contacts above the socket is 5, 4, 3, 2, 1. Since the 5 signal lines of the interface above the socket are the rotating mirror images of the 5 signal lines of the interface below, the 5 contacts of the interface below are from left to right The order of arrangement is 1, 2, 3, 4, 5.

The functions of the 5 pins are power supply to terminal equipment, negative differential signal, positive differential signal, indicating the type of access equipment and signal ground.

The function description corresponding to each contact is shown in Table 1:

Table 1

pin number USB function MHL function 1 VCC VBUS 2 D- MHL- 3 D+ MHL+ 4 ID CBUS 5 GND GND

Taking Table 1 as an example, the pin whose pin number is 1 has a function of supplying power to terminal equipment. When used as a USB function, this pin is VCC, indicating that the power supply is positive 5 volts; when used as an MHL function, this pin is VBUS, which also indicates that the power supply is positive 5 volts.

The pin numbered 2 functions as a negative differential signal. When used as a USB function, this pin is D-, indicating the negative of the differential data line; when used as an MHL function, this pin is MHL-, indicating the negative of the differential video signal, corresponding to the HDMI signal line RX0-.

The pin numbered 3 functions as a positive differential signal. When used as a USB function, this pin is D+, which means the differential data line is positive; when used as an MHL function, this pin is MHL+, which means that the differential audio and video signal is positive, corresponding to the HDMI signal line RX0+.

The pin numbered 4 is the pin indicating the type of the access device. This pin has two states, one is ID, which means the air interface, and the other is CBUS, which means the command transmission signal. Correspondingly, the USB chip has a matching ID, and the MHL chip has a matching CBUS. When the ID of the USB chip is connected to this pin, it is used as a USB function; when the CBUS of the MHL chip is connected to this pin, it is used as an MHL function.

The pin numbered 5 functions as a signal ground. When it is used as USB function and MHL function, it is GND, indicating the signal ground.

The plug part in Figure 1 adopts the hardware shape corresponding to the socket, and 5 metal contacts are distributed on both sides. The metal contact signal line of the plug corresponds to the socket one by one, one side is 1, 2, 3, 4, 5, and the other side is 5, 4, 3, 2, 1. The terminal device intelligently distinguishes the types of connected devices through the fourth signal line ID/CBUS.

Referring to Fig. 3, it shows the selection scheme for terminal equipment to identify the type of access equipment, and the identification of the type of access equipment is jointly controlled by the power controller, high-speed switch, chip selection controller, MHL chip controller and USB chip , One side of the socket is the A side, the other side is the B side, and the A and B sides are rotating mirror images.

The power controller is respectively connected to pin 1 of the A side and the B side of the socket, and is used for supplying power to the terminal equipment.

One side of the high-speed switch is connected to the A side and the B side of the socket, and the other side is connected to the USB chip and the MHL chip controller for differential signal transmission. Among them, when connecting with the A side and B side of the socket, connect the No. 2 pin and No. 3 pin of the A side and the B side of the socket respectively; when connecting with the USB chip, connect the differential data line negative and differential data of the USB chip The positive line corresponds to the USB function of pins 2 and 3 on the A side and B side of the socket respectively; when connected to the MHL chip controller, it is connected to the negative and differential audio and video signals of the MHL chip controller It is corresponding to the MHL function of the switching control line and the pins 2 and 3 on the A side and the B side of the socket.

One side of the chip selection controller is respectively connected to the A side and the B side of the socket, and the other side is connected to the USB chip and the MHL chip controller respectively, which are used to identify the type of the access device. Among them, when connecting with the A side and the B side of the socket, respectively connect the No. 4 pins of the A side and the B side of the socket; The USB function of the 4th pin corresponds to; when connected to the MHL chip controller, connect the command transmission signal of the MHL chip controller and the switching control line; The MHL function corresponds to pin 4 on the B side. In addition, the chip select controller also includes a USB switcher for selecting USB devices or MHL devices.

In Fig. 1, both sides of the socket part and both sides of the plug part of the interface device are randomly connected, and pins with the same number have the same function. Among them, the No. 4 pin, that is, the access device type indication pin is connected with the USB chip and the MHL chip controller through the chip select controller, and is used to identify the type of the access device. Since the bifurcated line of the data line has two interfaces and can be connected to two different types of devices, the embodiment of the present invention is divided into three cases for description according to the sequence of accessing devices. In the first case, any interface of the forked line of the data line is inserted into an access device, and the other interface is not inserted into any access device; in the second case, one of the interfaces of the forked line of the data line first identifies the inserted After the first access device, another interface is inserted into the second access device; in the third case, the two interfaces of the branch line of the data line are inserted into the first access device and the second access device at the same time.

It should be noted that since there is only one USB chip and one MHL chip controller inside the terminal device, it can be concluded from the connection relationship between each chip and each pin of the socket shown in Figure 3 that both sides of the socket cannot identify the same type of equipment. For example, after the A side of the socket has identified the type of the connected device as a USB device, the B side of the socket can no longer be identified as the connected device type of the USB device.

The interface device provided by the embodiment of the present invention supports USB and MHL functions at the same time, and can be connected with a USB mouse, keyboard, mobile hard disk, etc. while MHL is output to a large-screen display device, and the terminal device can be used as a computer host. It opens up a wider space for applications such as office and entertainment using terminal devices such as smart phones and tablet computers. On the other hand, the interface device can intelligently identify the interface inserted into the device, and the plug does not distinguish between the front and the back, and the user can insert it at will, which brings great convenience in use.

Embodiment one

1 and 2 , the embodiment of the present invention provides an interface configuration method, which is used to insert any interface of the bifurcated line of the data line into an access device when the plug of the interface device is inserted into the socket. When identifying whether the inserted device is USB or MHL, for convenience, referring to FIG. 3 , the embodiment of the present invention uses side A as the first insertion side and side B as the second insertion side as an example for illustration. As shown in Figure 4, the method may include:

S101. When an access device is connected, a power supply pin on any insertion surface sends an access signal to a power controller of the terminal device.

It should be noted that when the first access device is plugged into the first interface of the diverged line of the data line, the corresponding No. 1 pin on the side A of the socket sends an access signal to the power controller of the terminal device.

After receiving the access signal sent to the power controller by the No. 1 pin on the A surface, the power controller of the terminal device detects that the first access device is connected, and sends an interrupt request to the CPU.

S102. Identify the device type of the access device according to the status of the signal forwarded by the chip select controller connected to the socket received by the access device type indication pin on the any insertion surface, and determine the The working state of the inserted face.

Specifically, the access device type indication pin on any of the insertion planes is connected to the signal forwarded by the chip select controller.

The CPU of the terminal device sends a connection command to the MHL chip controller, and connects the command transmission signal of the MHL chip controller and the No. 4 pin of the A surface through the chip select controller.

Since the terminal device identifies the access device through the No. 4 pin, that is, the ID of the USB or the CBUS signal line of the MHL, the command transmission signal of the MHL chip controller and the No. 4 pin of the A side are connected through the chip select controller. To determine the type of access device.

The No. 4 pin on the A side is suspended or the voltage is pulled down according to the command transmission signal state of the MHL chip controller, and the working state of the A side is judged to be the USB working state or the MHL working state.

Specifically, when only the first access device is inserted into any insertion surface, and the any insertion surface is the first insertion surface, referring to FIG. 5, step S102 includes steps S1021 to S1024:

S1021. When the access device type indication pin on the first insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, the state of the MHL chip controller is suspended, and the first access device is identified as a USB device, so The first insertion surface enters the first USB working state.

By default, pin 4 CBUS/USB_ID has a pull-up resistor, and the USB_ID pin is kept at a high level. Both the USB switch and the high-speed switch are connected to the USB side, and the MHL is disconnected at this time.

When the A side is connected to the USB port of a computer and other equipment, determine the connection status and level of the No. 4 pin on the A side.

Since the pin contacts of the USB port of the computer and other equipment are 4, that is, 4pin, when the first access device on the A side is connected to the USB port, the 5 signal lines on the A side are connected to the 4 signal lines of the USB port. , the 4th pin CBUS/USB_ID of side A is left floating. Then the No. 4 pin of the A side remains at a high level, and the A side enters the first USB working state.

It should be noted here that the first USB working state indicates that the terminal device connected to side A is used as a USB device (USB-DEVICE).

S1022. When the access device type indication pin on the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller, the state voltage is pulled low, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first access device is an MHL device, the first insertion surface enters the MHL working state.

When the A side is connected to the MHL device, the command transmission signal voltage of the MHL chip controller will be pulled down. If the pull-down resistance of the command transmission signal is 1KΩ, start the handshake process, and confirm whether the first access device is an MHL device through the handshake process.

If the first access device is an MHL device, the chip select controller continues to connect the command transmission signal of the MHL chip controller with the No. 4 pin on the A side, and the USB switcher changes the connection status to the MHL state, and the A side enters the MHL work state. received by the chip select controller and forwarded.

S1023. When the access device type indication pin on the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller, the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first access device is not an MHL device, the device identification fails.

If it is determined through the handshake process that the first access device is not an MHL device, the USB switch remains in its initial state, and the insertion side of the access device stays at the default USB side, and the device cannot be recognized.

S1024. When the access device type indication pin on the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller, the state voltage is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ, the first access device is recognized as a USB device, and the first insertion surface enters the second USB working state.

When the A side is connected to an OTG device, the command transmission signal voltage of the MHL chip controller will be pulled down. If the pull-down resistance of the command transmission signal is not 1KΩ, the chip select controller disconnects the connection between the command transmission signal of the MHL chip controller and the No. The switch keeps the connection state unchanged, and is still in the USB state, then the A side enters the second USB working state.

It should be noted here that the second USB working state indicates that the terminal device connected to side A is used as a USB host device (USB-HOST).

It should also be noted that pins 2 and 3 on the A side or B side of the socket are connected to the MHL chip controller or the USB chip through a high-speed switch. For example, when pins 2 and 3 on side A are connected to the negative and positive differential audio and video signals of the MHL chip controller through a high-speed switcher, the transmitted signal is a differential audio and video signal. When pin 2 and pin 3 on the B side are connected to the negative differential data line and the positive differential data line of the USB chip through the high-speed switcher, the transmitted signal is a differential data signal. Wherein, the differential signal is a signal transmitted on two data lines, and the two signals have equal amplitudes and opposite phases.

The embodiment of the present invention provides a method for interface configuration, modifying the metal pin contacts of the data interface socket and the plug, and designing the other side of the data line connecting the plug into a device that can simultaneously connect to a USB device and an MHL device. fork line. It realizes the simultaneous support of USB and MHL functions, and the interface does not distinguish between front and back, which is convenient for users to use.

Embodiment two

1 and 2, the embodiment of the present invention provides a method for interface configuration, which is used for when the plug of the interface device is inserted into the socket, one of the interfaces of the bifurcated line of the data line first identifies the inserted first access device and then , and plug another interface into the second access device. When identifying whether the inserted device is USB or MHL, for convenience, referring to FIG. 3 , the embodiment of the present invention uses side A as the first insertion side and side B as the second insertion side as an example for illustration. As shown in Figure 6, the method may include:

S201. When the second access device is connected, the power supply pin on the second insertion surface sends an access signal to the power controller of the terminal device.

It should be noted that when the second access device is plugged into the second interface of the diverged line of the data cable, the corresponding No. 1 pin on the B side of the socket sends an access signal to the power controller of the terminal device.

After receiving the access signal sent from the No. 1 pin on the B side to the power controller, the power controller of the terminal device detects that the second access device is connected, and sends an interrupt request to the CPU.

When the first access device and the second access device are inserted into both sides of the socket successively, and the two access devices are used at the same time, the CPU first determines the type of the first access device.

S202. According to the device type of the first access device, the access device type indication pin on the second insertion plane is connected to the second signal forwarded by the chip select controller.

Specifically, referring to FIG. 7, step S202 includes steps S2021 and S2022:

S2021. If the first access device has been identified as a USB device, connect the access device type indication pin on the second insertion surface with a command transmission signal between the chip select controller and the MHL chip controller.

The CPU of the terminal device sends a connection command to the MHL chip controller, and connects the command transmission signal of the MHL chip controller and the No. 4 pin on the B side through the chip select controller.

Since it has been determined that the first access device is a USB device, at this moment, the connection state of the first insertion surface is that the access device type indication pin of the first insertion surface is connected to the air port of the USB chip through the chip select controller, so the second Access devices can only be MHL devices. Here, the No. 4 pin on the B side is connected to the command transmission signal of the chip select controller and the MHL chip controller to determine whether the type of the second access device is an MHL device.

S2022. If the first access device has been identified as an MHL device, connect the access device type indication pin on the second insertion surface with the air interface signal of the USB chip through the chip select controller.

Since the first access device is identified as an MHL device, at this time, the connection status of the first insertion surface is that the access device type indication pin of the first insertion surface is connected to the command transmission signal of the MHL chip controller through the chip select controller, Therefore, the second access device can only be a USB device. Here, the No. 4 pin on the B side is connected to the air interface of the USB chip through the chip select controller, and it is identified whether the device type on the B side is a USB device.

S203. Identify the device type of the second access device according to the state of the second signal forwarded by the chip select controller received by the access device type indication pin on the second insertion plane, and determine the second The working state of the inserted face.

Specifically, referring to FIG. 8, step S203 includes steps S2031 and S2032:

S2031. The access device type indication pin of the second insertion plane receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the working status of the second insertion plane.

The No. 4 pin on the B side is suspended in the air or the voltage is pulled down according to the command transmission signal status of the MHL chip controller, and the working status of the B side is judged to be the MHL working status or unrecognizable.

Specifically, referring to FIG. 9, step S2031 includes steps S20311 to S20314:

S20311. When the access device type indication pin of the second insertion plane receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended, the access device type indication pin of the second insertion plane Disconnect the command transmission signal from the MHL chip controller.

If the command transmission signal of the MHL chip controller is empty, then the No. 4 pin on the B side remains at a high level. Since the first access device has been identified as a USB device, the identification of the second device fails, and the connection between the No. 4 pin on the B side and the command transmission signal of the MHL chip controller is disconnected.

S20312. When the access device type indication pin on the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller, the voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the second access device is an MHL device, the second insertion surface enters the MHL working state.

If the pull-down resistance of the command transmission signal is 1KΩ, start the handshake process, and confirm whether the second access device is an MHL device through the handshake process.

If the second access device is an MHL device, the chip select controller continues to connect the command transmission signal of the MHL chip controller with the No. 4 pin on the B side, and the USB switcher changes the connection state to the MHL state, and the B side is used as the MHL device use.

S20313. When the access device type indication pin on the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller, the voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the second access device is not an MHL device, the identification of the second access device fails.

If it is determined through the handshake process that the second access device is not an MHL device, the USB switch remains in its initial state, and the insertion side of the access device stays at the default USB side, and the device cannot be recognized.

S20314. When the access device type indication pin on the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller, the voltage is pulled down, and the pull-down resistance of the command transmission signal is not When it is 1KΩ, the identification of the second access device fails.

Since the first access device has been identified as a USB device, the second access device can only be identified as an MHL device. Under the above conditions, the second access device cannot be identified as an MHL device, so the identification of the second access device fails.

S2032. The access device type indication pin on the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the device type of the second access device, and determines the second insertion surface working status.

When the No. 4 pin on the B side receives the air interface signal of the USB chip, it directly identifies whether the type of the second access device is a USB device. If the USB device identification is unsuccessful, step S20322 is executed.

Specifically, referring to FIG. 10, step S2032 includes steps S20321 and S20322:

S20321. If the second insertion surface successfully recognizes the USB device, the second insertion surface enters a USB working state.

If the B side recognizes the USB device successfully, then the B side enters the USB working state. At this time, the device connected to side A is an MHL device, and the device connected to side B is a USB device.

S20322. If the second insertion surface fails to identify the USB device, disconnect the connection with the USB chip on the access device type indication pin of the second insertion surface.

If the identification of the USB device by the B side is unsuccessful, then only the first access device on the A side, that is, only the A side works in the MHL state.

It should be noted that pins 2 and 3 on the A side or B side of the socket are connected to the MHL chip controller or the USB chip through a high-speed switch. For example, when pins 2 and 3 on side A are connected to the negative and positive differential audio and video signals of the MHL chip controller through a high-speed switcher, the transmitted signal is a differential audio and video signal. When pin 2 and pin 3 on the B side are connected to the negative differential data line and the positive differential data line of the USB chip through the high-speed switcher, the transmitted signal is a differential data signal. Wherein, the differential signal is a signal transmitted on two data lines, and the two signals have equal amplitudes and opposite phases.

The embodiment of the present invention provides a method for interface configuration, modifying the metal pin contacts of the data interface socket and the plug, and designing the other side of the data line connecting the plug into a device that can simultaneously connect to a USB device and an MHL device. fork line. It realizes the simultaneous support of USB and MHL functions, and the interface does not distinguish between front and back, which is convenient for users to use.

Embodiment three

With reference to Figure 1 and Figure 2, the embodiment of the present invention provides a method for interface configuration, which is used to simultaneously insert the two interfaces of the bifurcated line of the data line into the first access device and the second when the plug of the interface device is inserted into the socket. Access the device. When identifying whether the inserted device is USB or MHL, for convenience, referring to FIG. 3 , the embodiment of the present invention uses side A as the first insertion side and side B as the second insertion side as an example for illustration. As shown in Figure 11, the method may include:

S301. When the first access device and the second access device are connected at the same time, the power supply pins of the first insertion surface and the second insertion surface send an access signal to a power controller of the terminal device.

It should be noted that when the first access device and the second access device are plugged into the two interfaces of the bifurcated line of the data line at the same time, the pins 1 of the corresponding A side and B side of the socket will control the power of the terminal device. The device sends an access signal.

After receiving the access signal sent to the power controller by the No. 1 pin of the A side and the B side, the power controller of the terminal device detects that the first access device and the second access device are connected, and sends an interrupt request to the CPU .

The first access device and the second access device are plugged into the socket at the same time, and the CPU needs to determine the access types of the A side and the B side.

S302. The access device type indication pin on the first insertion plane is connected to the first signal forwarded by the chip select controller.

When the CPU judges the device type of the access device, it first recognizes the device type on the A side through the chip selection controller.

S303. The access device type indicating pin of the first insertion plane receives the first signal state forwarded by the chip select controller, identifies the device type of the first access device, and determines the working status of the first insertion plane .

Specifically, referring to FIG. 12, step S303 includes steps S3031 to S3034:

S3031. The access device type indication pin of the first insertion plane receives the state of the command transmission signal of the MHL chip controller through the chip select controller, and determines the first access device type of the first insertion plane.

The steps of judging the type of the first access device on side A are the same as steps S1021 to S1024 in Embodiment 1, and will not be repeated here.

S3032. When the first access device type on the first insertion surface is identified as a USB device, disconnect the connection device type indication pin on the first insertion surface from the command transmission signal of the MHL chip controller.

Since the type of access device on side A has been identified as a USB device, it is necessary to disconnect the connection between pin 4 of side A and the command transmission signal of the MHL chip controller, so that side A is ready to connect to the USB chip.

S3033. The access device type indication pin on the first insertion surface is connected to the air interface of the USB chip through the chip select controller, and the first insertion surface enters a USB working state.

When the No. 4 pin on the A side is connected to the air interface of the USB chip through the chip select controller, the A side is connected to the USB device and enters the USB working state. At this time, side B can only work in the MHL state.

S3034. When the type of the access device on the first insertion plane is identified as an MHL device, maintain the connection between the indication pin of the access device type on the first insertion plane and the command transmission signal of the MHL chip controller. An inserted surface enters the MHL working state.

If the type of access device on side A has been identified as an MHL device, side A enters the MHL working state. At this time, the second access device on the B side can only be a USB device.

S304. According to the device type of the first access device, the access device type indication pin on the second insertion plane is connected to the second signal forwarded by the chip select controller.

Specifically, referring to FIG. 13, step S304 includes steps S3041 to S3042:

S3041. When the first access device type is identified as a USB device, the access device type indication pin on the second insertion surface is connected to a command transmission signal of the MHL chip controller through the chip select controller.

After the A-side confirms that the access device is a USB device, the No. 4 pin of the B-side is connected through the command transmission signal of the chip select controller and the MHL chip controller, and is used to identify whether the access device of the B-side is an MHL device.

S3042. When the type of the access device on the first insertion plane is identified as an MHL device, connect the indication pin of the access device type on the second insertion plane to a command air interface signal of the USB chip through the chip select controller.

Determine the device type on side B. Since the second access device on side B can only be a USB device, pin 4 on side B is connected to the command air port of the USB chip through the chip select controller to determine whether the second access device on side B is a USB device .

S305. Identify the device type of the second access device according to the state of the second signal forwarded by the chip select controller received by the access device type indication pin on the second insertion plane, and determine the second The working state of the inserted face.

Specifically, referring to FIG. 14, step S305 includes steps S3051 to S3052:

S3051. The access device type indication pin of the second insertion plane receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the working status of the second insertion plane.

The No. 4 pin on the B side is suspended in the air or the voltage is pulled down according to the command transmission signal status of the MHL chip controller, and the working status of the B side is judged to be the MHL working status or unrecognizable.

Here, the specific implementation process of step S3051 is the same as that of steps S20311 to S20314, and will not be repeated in this embodiment of the present invention.

S3052. The access device type indication pin of the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the second access device type, and determines the type of the second insertion surface working status.

Here, the specific implementation process of step S3052 is the same as that of steps S20321 to S20322, and will not be repeated in this embodiment of the present invention.

It should be noted that pins 2 and 3 on the A side or B side of the socket are connected to the MHL chip controller or the USB chip through a high-speed switch. For example, when pins 2 and 3 on side A are connected to the negative and positive differential audio and video signals of the MHL chip controller through a high-speed switcher, the transmitted signal is a differential audio and video signal. When pin 2 and pin 3 on the B side are connected to the negative differential data line and the positive differential data line of the USB chip through the high-speed switcher, the transmitted signal is a differential data signal. Wherein, the differential signal is a signal transmitted on two data lines, and the two signals have equal amplitudes and opposite phases.

The embodiment of the present invention provides a method for interface configuration, modifying the metal pin contacts of the data interface socket and the plug, and designing the other side of the data line connecting the plug into a device that can simultaneously connect to a USB device and an MHL device. fork line. It realizes the simultaneous support of USB and MHL functions, and the interface does not distinguish between front and back, which is convenient for users to use.

Embodiment four

Referring to FIG. 15 , it shows an apparatus 15 for providing an interface configuration according to an embodiment of the present invention. As shown in FIG. 1 , the socket part of the interface configuration device includes two insertion surfaces that are rotated mirror images, and both insertion surfaces include power supply pins and access device type indication pins. The sending module 1501 in Figure 15 corresponds to the power supply pin numbered 1 in the socket part in Figure 1, and the processing module 1502 in Figure 15 corresponds to the access device type indication pin numbered 4 in the socket part in Figure 1, and the interface configuration The device includes: a sending module 1501 and a processing module 1502; wherein,

The sending module 1501 is configured to send an access signal to any plug-in power controller facing the terminal device when the access device is connected;

The processing module 1502 is configured to connect any of the insertion planes with the signal forwarded by the chip select controller;

And, according to the state of the signal forwarded by the chip select controller connected to the socket received by any of the insertion planes, the device type of the access device is identified, and the working status of any of the insertion planes is determined.

In the above solution, the processing module 1502 is configured to identify the first access device as a USB device when the first insertion surface receives the command transmission signal state of the MHL chip controller through the chip select controller and the status is suspended. , the first insertion surface enters the first USB working state;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is an MHL device, the first insertion surface enters the MHL working state;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is not an MHL device, the device identification will fail;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ, the first interface The input device is recognized as a USB device, and the first insertion surface enters a second USB working state.

In the above solution, the sending module 1501 is configured to send an access signal to the power controller of the terminal device when the second plug-in device is connected;

The processing module 1502 is configured to connect the second insertion plane with the second signal forwarded by the chip selection controller according to the device type of the first access device;

And, according to the state of the second signal forwarded by the chip select controller received by the second insertion plane, the device type of the second access device is identified, and the working status of the second insertion plane is determined.

In the above solution, the processing module 1502 is configured to connect the second plug-in interface with a command transmission signal between the chip select controller and the MHL chip controller if the first access device has been identified as a USB device;

And, if the first access device has been identified as an MHL device, then the second insertion plane is connected to the air interface signal of the USB chip through the chip select controller.

In the above scheme, the processing module 1502 is used for the second insertion plane to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the working status of the second insertion plane;

And, the second insertion plane receives the air interface signal of the USB chip through the chip select controller, identifies the device type of the second access device, and determines the working state of the second insertion plane.

In the above scheme, the processing module 1502 is configured to indicate that the type of the access device on the second insertion plane indicates The pin is disconnected from the command transmission signal of the MHL chip controller;

And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first The second access device is an MHL device, and the second insertion surface enters the MHL working state;

And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the second access device is not an MHL device, the identification of the second access device fails;

And, when the voltage of the command transmission signal received by the MHL chip controller on the second insertion plane is pulled down through the chip select controller, and the pull-down resistance of the command transmission signal is not 1KΩ, the second Access device identification failed.

In the above solution, the processing module 1502 is configured to, if the second insertion surface successfully recognizes the USB device, then the second insertion surface enters the USB working state;

And, if the second insertion surface fails to identify the USB device, the connection device type indication pin on the second insertion surface is disconnected from the USB chip.

In the above solution, the sending module 1501 is configured to send an access signal to the power controller of the terminal device on the first insertion surface and the second insertion surface when the first access device and the second access device are connected at the same time ;

The processing module 1502 is configured to connect the first insertion plane with the first signal forwarded by the chip select controller;

And, the first insertion plane receives the first signal status forwarded by the chip select controller, identifies the device type of the first access device, and determines the working status of the first insertion plane;

And, according to the device type of the first access device, the second insertion plane is connected to the second signal forwarded by the chip selection controller;

And, according to the state of the second signal forwarded by the chip select controller received by the second insertion plane, the device type of the second access device is identified, and the working status of the second insertion plane is determined.

In the above solution, the processing module 1502 is used for the first insertion plane to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the first access device type of the first insertion plane ;

And, when the first access device type of the first insertion surface is identified as a USB device, disconnect the first insertion surface from the command transmission signal of the MHL chip controller;

And, the first insertion surface is connected to the air port of the USB chip through the chip select controller, and the first insertion surface enters the USB working state;

And, when the access device type of the first insertion surface is identified as an MHL device, the connection between the first insertion surface and the command transmission signal of the MHL chip controller is maintained, and the first insertion surface enters the MHL work state.

In the above solution, the processing module 1502 is configured to identify the first access device as a USB device when the first insertion surface receives the command transmission signal state of the MHL chip controller through the chip select controller and the status is suspended. , the first insertion surface enters the first USB working state;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is an MHL device, the first insertion surface enters the MHL working state;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is not an MHL device, the device identification will fail;

And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ, the first interface The input device is recognized as a USB device, and the first insertion surface enters a second USB working state.

In the above solution, the processing module 1502 is configured to, when the first access device type is identified as a USB device, connect the second insertion plane with the command transmission signal of the MHL chip controller through the chip select controller. Pass;

And, when the type of the access device on the first insertion plane is identified as an MHL device, the second insertion plane is connected to the command air interface signal of the USB chip through the chip select controller.

In the above scheme, the processing module 1502 is used for the second insertion plane to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the working status of the second insertion plane;

And, the second insertion plane receives the air interface signal of the USB chip through the chip select controller, identifies the type of the second access device, and determines the working state of the second insertion plane.

In the above solution, the processing module 1502 is configured to disconnect the second insertion surface from the MHL chip controller when the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended. connection of command transmission signals;

And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first The second access device is an MHL device, and the second insertion surface enters the MHL working state;

And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the second access device is not an MHL device, the identification of the second access device fails;

And, when the voltage of the command transmission signal received by the MHL chip controller on the second insertion plane is pulled down through the chip select controller, and the pull-down resistance of the command transmission signal is not 1KΩ, the second Access device identification failed.

In the above solution, the processing module 1502 is configured to, if the second insertion surface successfully recognizes the USB device, then the second insertion surface enters the USB working state;

And, if the second insertion surface fails to identify the USB device, the connection device type indication pin on the second insertion surface is disconnected from the USB chip.

Specifically, for the device description of the interface configuration provided in the embodiment of the present invention, reference may be made to the description of the interface configuration method in Embodiment 1 to Embodiment 3, and details will not be repeated here in the embodiment of the present invention.

In practical applications, the sending module 1501 and the processing module 1502 can be configured by a central processing unit (Central Processing Unit, CPU), a microprocessor (Micro Processor Unit, MPU), a digital signal processor, etc. (Digital Signal Processor, DSP), or Field Programmable Gate Array (Field Programmable Gate Array, FPGA) and other implementations.

The embodiment of the present invention provides a method and device for interface configuration, modifying the metal pin contacts of the data interface socket and the plug, and designing the other side of the data line connecting the plug into a USB device and Forked line for MHL devices. It realizes the simultaneous support of USB and MHL functions, and the interface does not distinguish between front and back, which is convenient for users to use.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (26)

1. A method for interface configuration, characterized in that the method is applied to the socket part of the interface configuration device, and the socket part includes two insertion surfaces that are rotating mirror images, and both insertion surfaces include power supply pins and connectors. Entering the device type indication pin, the method includes: When the access device is connected, the power supply pin of any insertion surface sends an access signal to the power controller of the terminal device; According to the access device type indication pin on any of the insertion surfaces receiving the signal state forwarded by the chip select controller connected to the socket, identify the device type of the access device, and determine the any insertion surface The working state, wherein, the working state is USB working state or MHL working state; When the second access device is connected to the other side of any insertion surface, and the other side of the any insertion surface is the second insertion surface, after identifying the device type of the first access device, it further includes: When the second access device is connected, the power supply pin of the second insertion surface sends an access signal to the power controller of the terminal device; According to the device type of the first access device, the access device type indication pin on the second insertion plane is connected to the second signal forwarded by the chip select controller; Identify the device type of the second access device according to the state of the second signal forwarded by the chip select controller received by the access device type indicating pin of the second insertion plane, and determine the second insertion plane working status. 2. The method according to claim 1, wherein when only the first access device is connected to any insertion surface, and the any insertion surface is the first insertion surface, the An access device type indication pin on the insertion surface receives the signal status forwarded by the chip select controller connected to the socket, identifies the device type of the access device, and determines the working status of any of the insertion surfaces, include: When the access device type indication pin on the first insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, the state of the first access device is identified as a USB device, and the first insertion device is identified as a USB device. enter the first USB working state; When the access device type indication pin of the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the first access device is an MHL device, the first insertion surface enters the MHL working state; When the access device type indication pin of the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the first access device is not an MHL device, device identification fails; When the access device type indication pin on the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ , the first access device is identified as a USB device, and the first insertion surface enters a second USB working state. 3. The method according to claim 1, characterized in that, according to the device type of the first access device, the access device type indication pin on the second insertion plane and the second device forwarded by the chip select controller Signals on, including: If the first access device has been identified as a USB device, the access device type indication pin on the second insertion surface is connected to the command transmission signal of the chip select controller and the MHL chip controller; If the first access device has been identified as an MHL device, the access device type indication pin on the second insertion surface is connected to the air interface signal of the USB chip through the chip select controller. 4. The method according to claim 1, wherein the state of the second signal forwarded by the chip select controller received by the access device type indication pin on the second insertion plane identifies the The device type of the second access device is used to determine the working status of the second insertion surface, including: The access device type indication pin of the second insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the working state of the second insertion surface; The access device type indication pin of the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the device type of the second access device, and determines the working state of the second insertion surface . 5. The method according to claim 4, wherein the access device type indication pin of the second insertion surface receives the command transmission signal state of the MHL chip controller through a chip select controller, and determines the The working status of the second insertion surface, including: When the access device type indication pin of the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended, the access device type indication pin of the second insertion surface is disconnected Connection with the command transmission signal of the MHL chip controller; When the access device type indication pin on the second insertion surface receives the command transmission signal voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the second access device is an MHL device, the second insertion surface enters the MHL working state; When the access device type indication pin on the second insertion surface receives the command transmission signal voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the second access device is not an MHL device, the identification of the second access device fails; When the access device type indication pin on the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller, the voltage is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ , the identification of the second access device fails. 6. The method according to claim 4, wherein the access device type indication pin on the second insertion surface receives the air interface signal of the USB chip through a chip select controller, and the second access device Identify the type of equipment and determine the working status of the second insertion surface, including: If the second insertion surface identifies the USB device successfully, the second insertion surface enters the USB working state; If the second insertion surface fails to identify the USB device, the access device type indication pin on the second insertion surface is disconnected from the USB chip. 7. The method according to claim 1, wherein when the first access device accesses any side, the second access device accesses the other side of any side, and the any side is the first insertion side, When the other side of any one side is the second insertion side, the method also includes: When the first access device and the second access device are connected at the same time, the power supply pins of the first insertion surface and the second insertion surface send an access signal to the power controller of the terminal device; The access device type indication pin on the first insertion surface is connected to the first signal forwarded by the chip select controller; The access device type indication pin of the first insertion plane receives the first signal state forwarded by the chip select controller, identifies the device type of the first access device, and determines the working status of the first insertion plane; According to the device type of the first access device, the access device type indication pin on the second insertion plane is connected to the second signal forwarded by the chip select controller; Identify the device type of the second access device according to the state of the second signal forwarded by the chip select controller received by the access device type indicating pin of the second insertion plane, and determine the second insertion plane working status. 8. The method according to claim 7, wherein the access device type indication pin on the first insertion plane receives the first signal state forwarded by the chip select controller, and identifies the status of the first access device. The equipment type determines the working state of the first insertion surface, including: The access device type indication pin of the first insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the first access device type of the first insertion surface; When the first access device type of the first insertion surface is identified as a USB device, disconnect the connection of the access device type indication pin of the first insertion surface with the command transmission signal of the MHL chip controller; The access device type indication pin of the first insertion surface is connected to the air interface of the USB chip through the chip select controller, and the first insertion surface enters the USB working state; When the type of the access device on the first insertion plane is identified as an MHL device, keep the connection between the indication pin of the access device type on the first insertion plane and the command transmission signal of the MHL chip controller, the second An inserted surface enters the MHL working state. 9. The method according to claim 8, wherein the access device type indication pin on the first insertion surface receives the command transmission signal state of the MHL chip controller through the chip select controller, and determines the first The first access device type on the insertion side, including: When the access device type indication pin on the first insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, the state of the MHL chip controller is suspended, the first access device is identified as a USB device, and the second access device is identified as a USB device. 1. The insertion surface enters the first USB working state; When the access device type indication pin of the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the first access device is an MHL device, the first insertion surface enters the MHL working state; When the access device type indication pin of the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the first access device is not an MHL device, device identification fails; When the access device type indication pin on the first insertion surface receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ , the first access device is identified as a USB device, and the first insertion surface enters a second USB working state. 10. The method according to claim 7, characterized in that, according to the device type of the first access device, the access device type indication pin on the second insertion plane is forwarded by the chip select controller The second signal is turned on, including: When the first access device type is identified as a USB device, the access device type indication pin on the second insertion surface is connected to the command transmission signal of the chip select controller and the MHL chip controller; When the type of the access device on the first insertion plane is identified as an MHL device, the indication pin of the access device type on the second insertion plane is connected to the command air interface signal of the USB chip through the chip select controller. 11. The method according to claim 7, characterized in that, according to the state of the second signal forwarded by the chip select controller received by the access device type indicating pin of the second insertion plane, the second signal is identified. 2. The device type of the access device, to determine the working state of the second insertion surface, including: The access device type indication pin of the second insertion surface receives the command transmission signal status of the MHL chip controller through the chip select controller, and determines the working state of the second insertion surface; The access device type indication pin of the second insertion plane receives the air interface signal of the USB chip through the chip select controller, identifies the second access device type, and determines the working state of the second insertion plane. 12. The method according to claim 11, wherein the access device type indication pin of the second insertion surface receives the command transmission signal state of the MHL chip controller through a chip select controller, and determines the The working status of the second insertion surface, including: When the access device type indication pin of the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended, the access device type indication pin of the second insertion surface is disconnected from the MHL The connection of the command transmission signal of the chip controller; When the access device type indication pin on the second insertion surface receives the command transmission signal voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the second access device is an MHL device, the second insertion surface enters the MHL working state; When the access device type indication pin on the second insertion surface receives the command transmission signal voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ , if it is confirmed that the second access device is not an MHL device, the identification of the second access device fails; When the access device type indication pin on the second insertion surface receives the command transmission signal of the MHL chip controller through the chip select controller, the voltage is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ , the identification of the second access device fails. 13. The method according to claim 11, wherein the access device type indication pin on the second insertion surface receives the air interface signal of the USB chip through a chip select controller, and the second access device type Identifying and determining the working state of the second insertion surface includes: If the second insertion surface identifies the USB device successfully, the second insertion surface enters the USB working state; If the second insertion surface fails to identify the USB device, the access device type indication pin on the second insertion surface is disconnected from the USB chip. 14. A device for interface configuration, characterized in that the device comprises: a sending module and a processing module; wherein, The sending module is configured to send an access signal to any plug-in power controller facing the terminal device when the access device is connected; The processing module is used for connecting any one of the insertion planes with the signal forwarded by the chip selection controller; And, according to the signal status forwarded by the chip select controller connected to the socket received by any of the insertion planes, the device type of the access device is identified, and the working status of any of the insertion planes is determined, wherein the The working status is USB working status or MHL working status; The sending module is further configured to send an access signal to the power controller of the second plug-in terminal device when the second access device is connected; The processing module is further configured to connect the second insertion plane with the second signal forwarded by the chip selection controller according to the device type of the first access device; And, according to the state of the second signal forwarded by the chip select controller received by the second insertion plane, the device type of the second access device is identified, and the working status of the second insertion plane is determined. 15. The apparatus of claim 14, wherein: The processing module is used to identify the first access device as a USB device when the first insertion surface receives the command transmission signal state of the MHL chip controller through the chip select controller, and the first insertion surface enters the first USB device. working status; And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is an MHL device, the first insertion surface enters the MHL working state; And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is not an MHL device, the device identification will fail; And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ, the first interface The input device is recognized as a USB device, and the first insertion surface enters a second USB working state. 16. The apparatus of claim 14, wherein: The processing module is configured to, if the first access device has been identified as a USB device, then the second insertion surface is connected to the command transmission signal of the chip select controller and the MHL chip controller; And, if the first access device has been identified as an MHL device, then the second insertion plane is connected to the air interface signal of the USB chip through the chip select controller. 17. The apparatus of claim 14, wherein: The processing module is used for the second insertion surface to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the working state of the second insertion surface; And, the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the device type of the second access device, and determines the working state of the second insertion surface. 18. The apparatus of claim 17, wherein: The processing module is configured to disconnect the second insertion plane from the command transmission signal of the MHL chip controller when the second insertion plane receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended in the air. Connection; And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first The second access device is an MHL device, and the second insertion surface enters the MHL working state; And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the second access device is not an MHL device, the identification of the second access device fails; And, when the voltage of the command transmission signal received by the MHL chip controller on the second insertion plane is pulled down through the chip select controller, and the pull-down resistance of the command transmission signal is not 1KΩ, the second Access device identification failed. 19. The apparatus of claim 17, wherein: The processing module is configured to, if the second insertion surface successfully recognizes the USB device, enter the USB working state on the second insertion surface; And, if the second insertion surface fails to identify the USB device, the second insertion surface disconnects from the USB chip. 20. The apparatus of claim 14, wherein: The sending module is configured to send an access signal to the power controller of the terminal device on the first insertion surface and the second insertion surface when the first access device and the second access device are connected at the same time; The processing module is configured to connect the first insertion plane with the first signal forwarded by the chip select controller; And, the first insertion plane receives the first signal status forwarded by the chip select controller, identifies the device type of the first access device, and determines the working status of the first insertion plane; And, according to the device type of the first access device, the second insertion plane is connected to the second signal forwarded by the chip selection controller; And, according to the state of the second signal forwarded by the chip select controller received by the second insertion plane, the device type of the second access device is identified, and the working status of the second insertion plane is determined. 21. The apparatus of claim 20, wherein: The processing module is used for the first insertion plane to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the first access device type of the first insertion plane; And, when the first access device type of the first insertion surface is identified as a USB device, disconnect the first insertion surface from the command transmission signal of the MHL chip controller; And, the first insertion surface is connected to the air port of the USB chip through the chip select controller, and the first insertion surface enters the USB working state; And, when the access device type of the first insertion surface is identified as an MHL device, the connection between the first insertion surface and the command transmission signal of the MHL chip controller is maintained, and the first insertion surface enters the MHL work state. 22. The device of claim 21, wherein: The processing module is configured to identify the first access device as a USB device when the first insertion surface receives the command transmission signal state of the MHL chip controller through the chip select controller and the status is suspended. The insertion surface enters the first USB working state; And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is an MHL device, the first insertion surface enters the MHL working state; And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and the state voltage is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the access device is not an MHL device, the device identification will fail; And, when the first insertion plane receives the command transmission signal state voltage of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is not 1KΩ, the first interface The input device is recognized as a USB device, and the first insertion surface enters a second USB working state. 23. The apparatus of claim 20, wherein: The processing module is configured to, when the type of the first access device is identified as a USB device, connect the second insertion plane with a command transmission signal of the chip select controller and the MHL chip controller; And, when the type of the access device on the first insertion plane is identified as an MHL device, the second insertion plane is connected to the command air interface signal of the USB chip through the chip select controller. 24. The apparatus of claim 20, wherein: The processing module is used for the second insertion surface to receive the command transmission signal status of the MHL chip controller through the chip select controller, and determine the working state of the second insertion surface; And, the access device type indication pin of the second insertion surface receives the air interface signal of the USB chip through the chip select controller, identifies the second access device type, and determines the working state of the second insertion surface . 25. The device of claim 24, wherein: The processing module is configured to disconnect the second insertion plane from the command transmission signal of the MHL chip controller when the second insertion plane receives the command transmission signal of the MHL chip controller through the chip select controller and is suspended in the air. ; And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first The second access device is an MHL device, and the second insertion surface enters the MHL working state; And, when the second insertion plane receives the voltage of the command transmission signal of the MHL chip controller through the chip select controller and is pulled down, and the pull-down resistance of the command transmission signal is 1KΩ, if it is confirmed that the first If the second access device is not an MHL device, the identification of the second access device fails; And, when the voltage of the command transmission signal received by the MHL chip controller on the second insertion plane is pulled down through the chip select controller, and the pull-down resistance of the command transmission signal is not 1KΩ, the second Access device identification failed. 26. The device of claim 24, wherein: The processing module is configured to, if the second insertion surface successfully recognizes the USB device, enter the USB working state on the second insertion surface; And, if the second insertion surface fails to identify the USB device, the connection device type indication pin on the second insertion surface is disconnected from the USB chip.