CN112115087B - Universal Serial Bus Adapters and Systems - Google Patents
Universal Serial Bus Adapters and Systems Download PDFInfo
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- CN112115087B CN112115087B CN202011209041.3A CN202011209041A CN112115087B CN 112115087 B CN112115087 B CN 112115087B CN 202011209041 A CN202011209041 A CN 202011209041A CN 112115087 B CN112115087 B CN 112115087B
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The application relates to a universal serial bus adapter and a system, wherein the universal serial bus adapter is provided with an audio/video signal processing circuit, a power supply processing circuit and a control circuit. The control circuit controls the working state of the power supply processing circuit according to the audio and video signals and the power supply signals in the external equipment, and the audio and video signals and the power supply signals are respectively connected into the second interface through the audio and video signal processing circuit and the power supply processing circuit, so that the audio and video signals and the power supply signals in the external equipment are separated for processing. Even when the time sequence of inserting the audio-video equipment and the power supply equipment in the external equipment into the first interface is changed, the control circuit can process the audio-video signals and the power supply signals through two different paths of the audio-video signal processing circuit and the power supply processing circuit respectively, so that the technical problem that the compatibility of the conventional universal serial bus is poor in the prior art is solved, and the compatibility of the universal serial bus is greatly improved.
Description
Technical Field
The present application relates to the field of signal connectors, and in particular, to a universal serial bus adapter and system.
Background
In order to charge or improve the use effect of electronic devices such as mobile phones, tablet computers and notebooks, some external devices such as chargers, audio devices or video devices are generally used for charging, playing video and audio. Along with the continuous perfection of electronic equipment industry specifications, electronic equipment is generally provided with a Type-C interface, and the electronic equipment is connected with external equipment through a universal serial bus (USB data line). When the universal serial bus has a plurality of connection ports, different connection ports are connected with different external devices, such as a charger, an audio device or a video device, but different signals enter the universal serial bus at different time sequences, delay or misjudgment on processing of different signals by an internal controller of the universal serial bus is easy to cause, so that the electronic device or the external device cannot generate sound, video or cannot be charged. Therefore, the compatibility of the current universal serial bus is poor.
Disclosure of Invention
Based on this, it is necessary to provide a universal serial bus adapter and system for the problem of poor compatibility of the current universal serial buses.
A universal serial bus adapter, comprising:
The first interface is used for connecting external equipment, and the external equipment comprises audio and video equipment and power supply equipment;
The second interface is used for connecting the main equipment;
The audio/video signal processing circuit is used for mutually converting an audio/video signal input through a first interface and a high-speed signal input through a second interface and outputting the audio/video signal through the second interface and the first interface respectively;
The first end of the power supply processing circuit is electrically connected with the first interface, the second end of the power supply processing circuit is electrically connected with the second interface, and the third end of the power supply processing circuit is electrically connected with the power supply end of the audio/video signal processing circuit;
and the control circuit is respectively connected with the first interface and the control end of the power supply processing circuit in a signal manner, and is used for controlling the power supply processing circuit to work.
In one embodiment, the control circuit is configured to
Under the condition that only a power supply device exists in the external device, the power supply processing circuit is controlled to be connected with the first interface and the second interface, and the power supply processing circuit is controlled to be connected with the audio/video signal processing circuit;
Under the condition that only audio and video equipment exists in the external equipment, the power supply processing circuit is controlled to be connected with the second interface and the power supply processing circuit;
And under the condition that the external equipment comprises the audio and video equipment and the power supply equipment, controlling the power supply processing circuit to be connected with the first interface, the second interface and the power supply processing circuit.
In one embodiment, the power processing circuit includes:
a first power supply switcher, wherein a first end of the first power supply switcher is electrically connected with the first interface, and a second end of the first power supply switcher is electrically connected with the second interface;
The first end of the second power supply switcher is electrically connected with the third end of the first power supply switcher, and the second end of the second power supply switcher is electrically connected with the power supply end of the audio/video signal processing circuit.
In one embodiment, the power supply processing circuit further comprises:
The input end of the voltage regulator is electrically connected with the third end of the first power supply switcher, the output end of the voltage regulator is respectively electrically connected with the power supply end of the audio and video signal processing circuit and the control circuit, and the voltage regulator is used for converting the voltage output by the first power supply switcher into preset voltage.
In one embodiment, the audio/video signal processing circuit includes:
The first end of the protocol processor is in signal connection with the external equipment;
The first end of the signal converter is in signal connection with the second end of the protocol processor, the second end of the signal converter is in signal connection with the second interface, and the signal converter is used for converting audio and video signals in the external equipment into high-speed signals.
In one embodiment, the audio/video signal processing circuit further includes:
the first end of the signal switcher is in signal connection with the second end of the signal converter, the second end of the signal switcher is in signal connection with the second interface, the control end of the signal switcher is in signal connection with the control circuit, and the signal switcher is used for switching the transmission direction of the high-speed signals.
In one embodiment, the method further comprises:
the controller is in signal connection with the control end of the protocol processor and is used for controlling the operation of the protocol processor;
the controller is also in signal connection with the signal converter, and is also used for waking up the signal converter when the signal converter is in signal dormancy.
In one embodiment, the method further comprises:
And the memory is in signal connection with the controller.
In one embodiment, the first interface includes:
the audio interface is in signal connection with the first end of the audio-video signal processing circuit;
the video interface is in signal connection with the first end of the audio/video signal processing circuit;
and the power interface is electrically connected with the first end of the power supply processing circuit.
A universal serial bus adapter system comprising:
a universal serial bus adapter as described above;
The external device is in signal connection with the first interface;
and the main equipment is in signal connection with the second interface.
One embodiment of the application provides a universal serial bus adapter, which is provided with the audio and video signal processing circuit, the power supply processing circuit and the control circuit. The control circuit controls the working state of the power supply processing circuit according to the audio and video signals and the power supply signals in the external equipment, and the audio and video signals and the power supply signals are respectively connected into the second interface through the audio and video signal processing circuit and the power supply processing circuit, so that the audio and video signals and the power supply signals in the external equipment are separated for processing. Even when the time sequence of inserting the audio-video equipment and the power supply equipment in the external equipment into the first interface is changed, the control circuit can process the audio-video signal and the power supply signal through two different paths of the audio-video signal processing circuit and the power supply processing circuit respectively, so that the technical problem of poor compatibility of the current universal serial bus in the prior art is solved, and the compatibility of the universal serial bus is greatly improved.
Meanwhile, the universal serial bus adapter provided by the embodiment of the application supplies power to the control circuit and the audio/video signal processing circuit through the power supply processing circuit so as to ensure the normal and stable operation of the control circuit and the audio/video signal processing circuit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a block diagram of a universal serial bus adapter provided in one embodiment of the present application;
FIG. 2 is a block diagram of a universal serial bus adapter provided in one embodiment of the present application;
FIG. 3 is a block diagram of a universal serial bus adapter provided in one embodiment of the present application;
FIG. 4 is a block diagram of a universal serial bus adapter provided in accordance with one embodiment of the present application;
fig. 5 is a block diagram of a usb adapter system according to an embodiment of the present application.
Reference numerals illustrate:
10. 100, a first interface, 110, an audio interface, 120, a video interface, 130, a power interface, 200, a second interface, 300, an audio and video signal processing circuit, 310, a protocol processor, 320, a signal converter, 330, a signal switcher, 400, a power processing circuit, 410, a first power switcher, 420, a second power switcher, 430, a voltage regulator, 500, a control circuit, 600, a controller, 700, a memory, 20, a universal serial bus adapter system, 21, an external device, 22, and a main device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, a universal serial bus adapter and system according to the present application will be described in further detail by way of examples with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The embodiment of the application provides a universal serial bus adapter, which is also called USB adapter and can be applied to signal transmission between any main equipment and external equipment. The main equipment can be a computer, a server, a tablet, a mobile phone, a singlechip and the like, and the external equipment can be audio and video equipment, power supply equipment and the like. The following embodiments specifically describe an example in which the usb adapter is applied between the host device and the external device to perform signal transmission.
Referring to fig. 1, one embodiment of the present application provides a universal serial bus adapter 10, which includes a first interface 100, a second interface 200, an audio/video signal processing circuit 300, a power supply processing circuit 400, and a control circuit 500.
The first interface 100 is used for connecting an external device 21, and is in signal connection with the external device 21 when in use, and the external device 21 comprises an audio/video device and a power supply device. The first interface 100 includes an audio/video input/output interface and a power interface. For example, in the external device 21, the first interface 100 is an audio/video input interface when audio/video signals flow to the main device 22 through the first interface 100, and the first interface 100 is an audio/video output interface when audio/video signals flow from the main device 22 to the external device 21. The audio-video device may be a headset, a microphone, a projector, a television, a display, etc., and may be operable to produce or play audio signals or video signals, or both. The power device may be a battery, a charger, or other device having a charging function, and may generate a power signal to power other electronic devices or circuits within the universal serial bus adapter 10 when in operation. The first interface 100 may include a video interface, an audio interface, or an audio-video interface, where the video interface may be DP, HDMI, VGA, DVI, AV, RF, displayPort interfaces, the audio interface may be a PS/2 interface, a USB interface, or the like, and the specific type and number of the first interface 100 are not limited in this embodiment, and may be specifically selected according to practical situations, and only the function of accessing and outputting an audio-video signal and a power signal needs to be implemented.
The second interface 200 is used for connecting with the main device 22, and is in signal connection with the main device 22 when in use, and the main device 22 can be a computer, a server, a tablet, a mobile phone, a single chip microcomputer, etc. When an audio/video signal flows to the main device 22, the main device 22 converts the audio/video signal into a video picture or sound and performs visual playing. When the external device 21 includes a sound device, a headset, etc., the high-speed signal generated in the main device 22 is processed and then transmitted to the sound device or the headset, so as to be played to the user. The second interface 200 may be a VGA display interface, a USB interface, etc., which is not limited in this embodiment, and may be specifically selected according to practical situations.
The first end of the audio/video signal processing circuit 300 is in signal connection with the first interface 100, the second end of the audio/video signal processing circuit 300 is in signal connection with the second interface 200, and the audio/video signal processing circuit 300 is configured to mutually convert an audio/video signal input through the first interface 100 and a high-speed signal input through the second interface 200, and output through the second interface 200 and the first interface 100, respectively. In other words, the audio/video signal processing circuit 300 is configured to perform signal conversion, convert an audio/video signal input through the first interface 100 into a high-speed signal, and output the high-speed signal to the host device 22 through the second interface 200, or convert a high-speed signal input through the second interface 200 into an audio/video signal, and output the audio/video signal to the external device 21 through the first interface 100. The audio/video processing circuit may be any circuit capable of implementing mutual conversion between an audio/video signal and a high-speed signal, and the embodiment is not particularly limited.
The first end of the power processing circuit 400 is electrically connected to the first interface 100, the second end of the power processing circuit 400 is electrically connected to the second interface 200, and the third end of the power processing circuit 400 is electrically connected to the power end of the audio/video signal processing circuit 300. The power supply processing circuit 400 is configured to supply power to the audio/video signal processing circuit 300 and the control circuit 500, so as to ensure normal operation of the audio/video signal processing circuit 300 and the control circuit 500. The power supply of the power supply processing circuit 400 is selected, for example, by controlling a power supply device in the external device 21 to supply power to the audio/video signal processing circuit 300 and the control circuit 500, or controlling the main device 22 to supply power to the audio/video signal processing circuit 300 and the control circuit 500. Meanwhile, the power supply processing circuit 400 may also process the electric energy from the main device 22 or the external device 21 to supply the audio/video signal processing circuit 300 and the control circuit 500, and simultaneously provide the audio/video signal processing circuit 300 and the control circuit 500 with the optimal working voltage and the optimal working current to ensure the working stability of the audio/video signal processing circuit 300 and the control circuit 500.
The control circuit 500 is respectively connected with the first interface 100 and a control end of the power processing circuit 400, where the control circuit 500 is used for controlling the power processing circuit 400 to work, for example, controlling whether the power processing circuit 400 works or not, and controlling a power supply source and a power transmission path of the power processing circuit 400. The control circuit 500 may include a micro controller or a control chip, etc., and the implementation is not limited in any way, and may be specifically selected according to practical situations.
The working principle of the universal serial bus adapter 10 provided by the embodiment of the application is as follows:
The universal serial bus adapter 10 provided in the embodiment of the present application includes an audio/video signal processing circuit 300, a power supply processing circuit 400, and a control circuit 500. When the external device 21 is connected to an audio/video device, an audio/video signal generated by the audio/video device is input to the audio/video signal processing circuit 300 through the first interface 100, the audio/video signal processing circuit 300 converts the audio/video signal to form a high-speed signal, and the high-speed signal is input to the main device 22 through the second interface 200 for playing. Meanwhile, when the external device 21 includes a power-free device, the control circuit 500 controls the power processing circuit 400 to input the power in the main device 22 to the audio/video signal processing circuit 300 and the control circuit 500 sequentially through the second interface 200, so as to supply power to the audio/video signal processing circuit 300 and the control circuit 500. When the external device 21 does not include a power device, that is, no power signal is input to the power processing circuit 400 through the first interface 100, the power processing circuit 400 directs the power signal to the main device 22, the audio/video signal processing circuit 300, and the control circuit 500, and simultaneously supplies power to the main device 22, the audio/video signal processing circuit 300, and the control circuit 500. The power signal and the audio/video signal enter the second interface 200 through different processing paths, and are input to the main device 22 for playing through the second interface 200.
One embodiment of the present application provides a universal serial bus adapter 10 by being provided with the audio and video signal processing circuit 300, the power processing circuit 400 and the control circuit 500. The control circuit 500 controls the working state of the power processing circuit 400 according to the audio/video signal and the power signal in the external device 21, and the audio/video signal and the power signal are respectively connected to the second interface 200 through the audio/video signal processing circuit 300 and the power processing circuit 400, so as to separate the audio/video signal and the power signal in the external device 21 for processing. Even when the timing sequence of the audio/video device and the power supply device in the external device 21 inserted into the first interface is changed, the control circuit can process the audio/video signal and the power supply signal through two different paths of the audio/video signal processing circuit 300 and the power supply processing circuit 400 respectively, so that the technical problem of poor compatibility of the current universal serial bus in the prior art is solved, and the compatibility of the universal serial bus is greatly improved.
Meanwhile, the universal serial bus adapter 10 provided in the embodiment of the present application supplies power to the control circuit 500 and the audio/video signal processing circuit 300 through the power supply processing circuit 400, so as to ensure normal and stable operation of the control circuit 500 and the audio/video signal processing circuit 300.
In one embodiment, the control circuit 500 is further configured to perform the following functions:
In the case where only the power supply device is included in the external device 21, the power supply processing circuit 400 is controlled to connect the first interface 100 to the second interface 200, and to disconnect the power supply processing circuit 400 from the audio/video signal processing circuit 300, so that the power supply device supplies power to the main device 22 and the control circuit 500.
In the case that only audio/video devices are included in the external device 21, the power supply processing circuit 400 is controlled to connect the second interface 200 and the power supply processing circuit 400, and the main device 22 supplies power to the audio/video signal processing circuit 300 and the control circuit 500 through the second interface 200, so that the audio/video signal processing circuit 300 and the control circuit 500 can work normally.
In the case where the external device 21 includes both an audio/video device and a power supply device, the power supply processing circuit 400 is controlled to make electrical connection among the first interface 100, the second interface 200, and the power supply processing circuit 400. The power supply device supplies power to the main device 22, the audio/video signal processing circuit 300 and the control circuit 500, so as to ensure the normal operation of the audio/video signal processing circuit 300 and the control circuit 500.
Referring to fig. 2, in one embodiment, the power processing circuit 400 includes a first power switch 410, a second power switch 420, and a voltage regulator 430.
The first end of the first power switch 410 is electrically connected to the first interface 100, the second end of the first power switch 410 is electrically connected to the second interface 200, the third end of the first power switch 410 is electrically connected to the first end of the second power switch 420, and the first power switch 410 is configured to switch the power supply to the audio/video signal processing circuit 300 and the control circuit 500. For example, in this embodiment, the external device 21 and the main device 22 include two power supplies, and when the external device 21 is connected, the first power switch 410 switches the connection mode to connect the electrical connections among the three ends of the external device 21, the main device 22 and the audio/video signal processing circuit 300, and supplies power to the main device 22, the control circuit 500 and the audio/video signal processing circuit 300 through the external device 21, so as to ensure the normal operation of the audio/video signal processing circuit 300 and the control circuit 500. The first power switch 410 may be a three-way electronic switch, the three-way electronic switch includes three connection ports, a control end of the three-way electronic switch is in signal connection with the control circuit 500, and the on-off of the three-way electronic switch is controlled by the control circuit 500, so as to realize the electrical connection among the three ends of the external device 21, the main device 22 and the audio/video signal processing circuit 300. The specific type, model, etc. of the first power switch 410 are not limited in this embodiment, and may be specifically selected or set according to practical situations, so long as the electrical connection relationship among the three terminals of the first interface 100, the main device 22, and the audio/video signal processing circuit 300, which can be switched, is satisfied.
The first end of the second power switch 420 is electrically connected to the third end of the first power switch 410, and the second end of the second power switch 420 is electrically connected to the power end of the audio/video signal processing circuit 300. The second power switch 420 is configured to control on/off between the first power switch 410 and the audio/video signal processing circuit 300. When only a power supply device is provided in the external device 21 and no audio/video device is connected, the control circuit 500 controls the second power switch 420 to be turned off, thereby cutting off the power supply to the audio/video signal processing circuit 300. The second power switch 420 may be a dual-on electronic switch, one end of which is electrically connected to the audio/video signal processing circuit 300, and the other end of which is electrically connected to the third end of the first power switch 410. The specific type and model of the second power switch 420 are not limited in this embodiment, and may be specifically selected according to practical situations, so long as the function of controlling the electrical connection between the audio/video signal processing circuit 300 and the first power switch 410 is satisfied.
An input end of the voltage regulator 430 is electrically connected to a third end of the first power switch 410, and an output end of the voltage regulator 430 is electrically connected to a power end of the audio/video signal processing circuit 300 and the control circuit 500, respectively. The voltage regulator 430 is configured to convert the voltage output by the first power switch 410 into a preset voltage, and provide the audio/video signal processing circuit 300 and the control circuit 500 with an optimal working current and an optimal working voltage, so as to ensure the optimal working performance of the audio/video signal processing circuit 300 and the control circuit 500. The voltage regulator 430 may be a DC-DC converter or other electronic devices with voltage regulating function, which is not limited in this embodiment, and may be specifically selected according to practical situations.
Referring to fig. 3, in one embodiment, the audio/video signal processing circuit 300 includes a protocol processor 310, a signal converter 320, and a signal switch 330.
The first end of the protocol processor 310 is in signal connection with the external device 21. The protocol processor 310 is configured to perform protocol processing on the audio/video signal input through the first interface 100, and form a pulse code modulation signal, that is, perform inter-conversion between an analog signal and a digital signal, and send the analog signal to the first interface, and send the digital signal to the signal converter 320, so that the subsequent signal converter 320 and the main device 22 can identify and receive the audio/video signal, and the external device 21 can identify and receive the audio/video signal. For example, the protocol processor 310 may perform a protocol process on the DAC-OUT PCM signal and the ADC-IN PCM signal to code modulate the audio pulses to form a digital signal. The protocol processor 310 may perform the processing of the PD protocol, the QC protocol, the BC1.2 protocol, etc., and the encoding processing type, etc. of the protocol processor 310 is not limited in this embodiment, and may be specifically selected or set according to the actual situation, and the embodiment is not specifically limited.
The first end of the signal converter 320 is signal-connected to the second end of the protocol processor 310, and the second end of the signal converter 320 is signal-connected to the second interface 200. The signal converter 320 is configured to convert the audio/video signal in the external device 21 into a high-speed signal, so as to facilitate the analysis processing of the main device 22. Or converts the high-speed signal in the main device 22 into an audio-video signal for easy reception and processing by the external device 21. The signal converter 320 only starts the related protocol to operate after receiving the second detection signal and reporting the second detection signal to the master device 22 through the second interface 200, so as to realize the operation stability of the usb adapter 10 according to the embodiment. The signal converter 320 may be any electronic device having a function of converting an audio/video signal and a high-speed signal, which is not particularly limited in this embodiment, and may be specifically selected according to practical situations.
The first end of the signal switch 330 is in signal connection with the second end of the signal converter 320, the second end of the signal switch 330 is in signal connection with the second interface 200, the control end of the signal switch 330 is in signal connection with the control circuit 500, and the control circuit 500 directly controls the signal switch 330 to work, so that the signal processing efficiency is higher. The signal switch 330 is configured to switch a transmission direction of the high-speed signal, for example, so that the high-speed signal output from the main device 22 is input to the signal converter 320 via the signal switch 330 for further processing into the audio/video signal, or the high-speed signal output from the signal converter 320 is output to the second interface 200 via the signal switch 330 and is input to the main device 22 via the second interface 200. The specific type, model, etc. of the signal switcher 330 in this embodiment are not limited, and may be specifically selected or set according to practical situations, and only the function of switching the transmission direction of the high-speed signal may be realized.
In one embodiment, the universal serial bus adapter 10 further comprises a controller 600, a memory 700.
The memory 700 is in signal connection with the controller 600, the memory 700 is configured to store information from the host device 22 or customized information, program codes, and other information preset in advance, and the memory 700 may also be configured to store other information, for example, an operation state or a fault state of the control circuit 500 in a working process. The memory 700 may be a memory chip, etc., and the embodiment is not limited specifically, and may be specifically selected or set according to practical situations, and only needs to satisfy the function of realizing storage.
The controller 600 is in signal connection with a control end of the protocol processor 310, and the controller 600 is used for controlling the operation of the protocol processor 310. The controller 600 may be a MUC controller, and the customized information stored in the memory 700 is processed by the MUC controller and input to the protocol processor 310, and then further processed and played by the host device 22 or the external device 21. Meanwhile, the controller 600 is further in signal connection with the signal converter 320, and the controller 600 is further configured to wake up the signal converter 320 when the signal converter 320 is in signal sleep. The controller 600 may also be any other chip or other electronic device with specific control functions, and the embodiment is not limited specifically.
Referring to fig. 4, in one embodiment, the first interface 100 includes an audio interface 110, a video interface 120, and a power interface 130.
The audio interface 110 is in signal connection with a first end of the audio/video signal processing circuit 300, and the audio interface 110 is used for connecting audio equipment, such as a headset, a sound box, etc. The audio interface 110 may be a PS/2 interface, a USB interface, or the like.
The video interface 120 is in signal connection with the first end of the audio/video signal processing circuit 300, and is used for connecting equipment, where the video interface 120 may be DP, HDMI, VGA, DVI, AV, RF, displayPort, USB interfaces, and the number and the model of the video interface 120 are not limited in this embodiment, and may be specifically selected or set according to practical situations, so long as the function of connecting video equipment is satisfied.
The power interface 130 is electrically connected to the first end of the power processing circuit 400, where the power interface 130 is used to connect to an external power source or a charger, and the power interface 130 may be a USB interface. IEEE13394, etc., the number, model, etc. of the power interfaces 130 are not limited in this embodiment, and may be specifically selected or set according to practical situations.
Referring to FIG. 5, one embodiment of the present application provides a universal serial bus adapter system 20 comprising:
The advantages of the usb adapter 10 described above are already described in detail in the above embodiments, and are not described herein.
The external device 21 is in signal connection with the first interface 100, and the external device 21 may include a plurality of types, such as a video device, an audio device, a power device, etc., which are not specifically limited in this embodiment, and may be specifically selected according to practical situations.
The main device 22 is in signal connection with the second interface 200, and the main device 22 may be a computer, a server, a tablet, a mobile phone, a single-chip microcomputer, etc., which is not limited in this embodiment, and may be specifically selected according to practical situations.
In one embodiment, the control circuit 500 is respectively connected to the first interface 100 and the second interface 200 in a signal manner, the first interface 100 is connected to the external device 21 in a signal manner, and the second interface 200 is connected to the main device 22 in a signal manner. The control circuit 500 determines the type of the external device 21 through the signal input in the first interface 100, for example, if the master device 22 detects that the power interface 130 has a first detection signal (dfp_cc1 & dfp_cc2), it determines that there is power device access, and inputs the first detection signal to the master device 22 through the second interface 200. The master device 22 determines that a power supply device is connected through the first detection signal, so as to generate a first control signal, and transmits the first control signal to the control circuit 500, and the control circuit 500 controls the working state of the power supply processing circuit 400 based on the first control signal. In contrast, if the first detection signal is not detected, it is determined that no power device is connected, and the control circuit 500 controls the power processing circuit 400 to supply power to the audio/video signal processing circuit 300 and the control circuit 500 through the master device 22.
Similarly, the first interface 100 is in signal connection with the signal converter, and when the first interface 100 detects that there is a second detection signal JD, the control circuit 500 transmits the second detection signal to the master device 22 through the second interface 200. The master device 22 determines that an audio/video device is connected through the second detection signal, so as to generate a second control signal, and the control circuit 500 controls the signal converter 320 to start through the second control signal, so as to enter a working state. Otherwise, the master device 22 determines that no audio/video device is connected, and controls the signal converter 320 to enter the sleep state through the control circuit 500.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
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| KR100662036B1 (en) * | 2006-03-29 | 2006-12-28 | (주)심스뮤직 | Other sound input / output system and sound input / output method with built-in USB interface |
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