CN104933992A - Android video control system of LED display screen - Google Patents

Abstract

The invention provides an android video control system of an LED display screen, which comprises: the video processing system comprises at least one video processing unit, an android video control unit used for providing video resources for the video processing unit, and a video processing unit connected with the android video control unit through a slot; the android video control unit comprises: the system comprises a processor module for acquiring video resources through the Ethernet, a touch screen module for displaying and controlling the video resources, and a data storage module for storing the video resources; the video processing unit includes: the system comprises a video processing module for receiving video resources and sending working instructions to the control module, the control module for receiving the working instructions and sending the control instructions to the video processing module, and a line driving module for converting frame signals corresponding to the video resources into differential signals for the LED display screen to display. The invention realizes the conversion of the video source from the outside to the system internal supply, the LED screen display is more convenient, and the working efficiency of the LED display screen is improved.

Description

LED Display Android Video Control System

technical field

Embodiments of the present invention relate to the technical field of video control of LED display screens, in particular to an Android video control system for LED display screens.

Background technique

At present, LED display technology has become increasingly mature, and LED display control systems have been widely used in transportation, advertising, press releases, sports competitions, large-scale concerts and other fields. As the key to controlling the data and images displayed on the LED screen, the LED video control system is the core of the entire LED display system. The LED large screen system is mainly composed of upper computer, controller, driver, video playback management software, and transmission system.

The video resources of the traditional LED display are provided by the host computer, and most of the video controllers use 8-bit or 16-bit microcontrollers. Due to the limitations of the processing speed, system architecture, peripheral interface resources, etc. A good dynamic visual effect can be obtained in the case of displaying more pixels and complex dynamic display effects.

Contents of the invention

An embodiment of the present invention provides an Android video control system for an LED display to overcome the problem in the prior art that the video resources of the LED display are provided by an external host computer and the cost is too high.

The Android video control system of the LED display screen of the present invention comprises:

A power supply unit, at least one video processing unit, an Android video control unit for providing video resources to the video processing unit, the Android video control unit is connected to the video processing unit through a slot, and the power supply unit is connected through a power cord Connect with the Android video control unit and the video processing unit;

The Android video control unit includes: a processor module for obtaining video resources via Ethernet, a touch screen module for displaying and controlling video resources, a data storage module Ethernet interface unit for storing the video resources;

The video processing unit includes: a video processing module that receives the video resource and sends a work instruction to the control module, a control module that receives the work instruction and sends a control instruction to the video processing module, and converts the frame signal corresponding to the video resource A line driver module that converts to a differential signal for LED display.

Further, the video processing unit also includes:

Before the video processing module receives the video resource, it is used to receive the USB module of the LED display screen scanning mode of the upper computer.

Further, the model of the processor module of the Android video control unit is S5PV210AH-A0.

Further, the line driving module includes a monochrome driving mode or a color driving mode.

The system of the present invention receives the video resource sent by the video control system through the video processing module, processes it through the video processing module, and sends the processed signal to the line drive unit, and the line drive unit converts the processed signal into a differential signal and converts the processed signal into a differential signal. The signal is provided to the LED display, so that the video resources can be obtained from the LED display video control system, while the video processing unit control module in the LED Android video control system is composed of 32-bit high-performance ARM, and the video source is acquired by the host computer. The Android video control unit acquisition in the cost system makes it more convenient for the video control unit to acquire video resources. The system effectively combines the Android control system with the video controller, and realizes the transformation of the video source from the outside to the internal supply of the system. The LED screen display is more convenient, and the work efficiency of the LED display is improved.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the schematic structural diagram of the Android video control system of the LED display screen of the present invention;

Fig. 2 is another structural schematic diagram of the Android video control system of the LED display screen of the present invention;

Fig. 3 is the schematic diagram of the Ethernet interface module circuit in the Android video control unit of the present invention;

Fig. 4 is the schematic diagram of the data storage module circuit in the Android video control unit of the present invention;

Fig. 5 is the schematic diagram of the USB module circuit in the Android video control unit of the present invention;

Fig. 6 is a circuit schematic diagram of the line driver module in the Android video control unit of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of an Android video control system for an LED display screen of the present invention. As shown in Fig. 1, the system of this embodiment includes:

A power supply unit 101, at least one video processing unit 103, an Android video control unit 102 for providing video resources to the video processing unit, the Android video control unit 102 is connected to the video processing unit 103 through a slot, the The power supply unit 101 is connected with the Android video control unit 102 and the video processing unit 103 through a power cord;

The Android video control unit 102 includes: a processor module 104 for obtaining video resources via Ethernet, a touch screen module 105 for displaying and controlling video resources, a data storage module 106 for storing the video resources, and an Ethernet interface module 107;

The video processing unit 103 includes: a video processing module 108 that receives the video resource and sends a work instruction to the control module; a control module 109 that receives the work instruction and sends a control instruction to the video processing module; The line driver module 110 that converts the frame signal into a differential signal for LED display.

Specifically, the Android video control unit obtains video resources through Ethernet, and the video resources can be displayed and controlled through the touch screen module. The circuit schematic diagram of the Ethernet interface module is shown in FIG. 3 . Among them, the pins TD+, TD-, RX+, RX- are the connection signals for communicating with the Android control system, and the pins DM9000_LINKLED and DM9000_LINLED are the working indicator signals of the Ethernet port. The video resource can be stored by a data storage module, and the schematic circuit diagram of the data storage module is shown in FIG. 4 . Among them, the pin MEM_ADDR[20:0] is the data address stored in the storage unit, the pin MEM_DAT[23:0] is the number of data bits stored in the storage unit, the pin MEM_CLK is the synchronous clock signal, and the pin MEM_GW is the synchronous write enable The enable signal, the pin MEM_OE is the output enable signal, and the pin MEM_CE is the chip select signal.

The video processing module of the video processing unit sends a work instruction to the control unit after receiving the video resource, and the control unit sends a control instruction to the video processing module after receiving the work instruction, and the video processing module sends a video signal to the line driver module according to the control instruction, and the line The drive module converts the frame signal of the video resource into a differential signal displayed by the LED display.

Further, the processor module of the Android video control unit is model S5PV210AH-A0. The processor module installs the existing Android operating system and is used for receiving video resources of the Ethernet.

Further, the line driving module includes a monochrome driving mode or a color driving mode.

Fig. 2 is another structural schematic diagram of the Android video control system of the LED display screen of the present invention, as shown in Fig. 2, the present embodiment is based on the system described in Fig. 1, and further includes:

The USB module 111 is used for receiving the LED display screen scanning mode of the upper computer before the video processing module receives the video resource.

Specifically, the circuit principle diagram of the USB is shown in FIG. 5 . Among them, DS1099-W has a USB interface, and establishes a connection with the host computer through a USB cable. Pins XuTXD0, XuRXD0, SCPPU_TX0, SCPPU_RX0 are connection signals that transmit the scan mode to the Android control system. The circuit schematic diagram of the line driver module that converts the frame signal of the video resource into a differential signal for LED display is shown in Figure 6, wherein MOD SDAT0, MOD SCLK0, MOD SDAT1, and MOD SCLK1 are the frame signal of the video resource, and MOD SDAT0+, MOD SDAT0-, MOD SCLK0+, MODSCLK0-, MOD SDAT1+, MOD SDAT1-, MOD SCLK1+, MOD SCLK1- are the differential signals displayed on the LED display.

Each video processing unit can output up to 16 signals, and each signal can control up to 2048 signal points, and each signal point corresponds to an LED light on the LED display. The scanning method divides each frame of image corresponding to the video resource into M sub-regions, and the line driving unit in the video processing unit displays each sub-region respectively, so that the M line driving units jointly display the completed video picture of the video resource. The USB module in this system can receive the scanning mode of the LED display screen set by the host computer.

The system of the present invention receives the video resource sent by the video control system through the video processing module, processes it through the video processing module, and sends the processed signal to the line drive unit, and the line drive unit converts the processed signal into a differential signal and converts the processed signal into a differential signal. The signal is provided to the LED display, so that the video resource can be obtained from the LED display video control system, while the LED Android video control system is composed of 32-bit high-performance ARM, and the video source is obtained from the host computer. The acquisition by the video control unit makes it more convenient for the video control unit to acquire video resources. The system effectively combines the Android control system with the video controller, and realizes the transformation of the video source from the outside to the internal supply of the system. The LED screen display is more convenient, and the work efficiency of the LED display is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (4)

1. a LED display Android video control system, is characterized in that, comprising:

Power supply unit, at least one video processing unit, for providing the Android video control unit of video resource to described video processing unit, described Android video control unit is connected by slot with described video processing unit, and described power supply unit is connected with described Android video control unit, described video processing unit by power lead;

Described Android video control unit comprises: obtain the processor module of video resource, display and the touch screen module of control video resource, the data memory module storing described video resource, Ethernet interface unit by Ethernet;

Described video processing unit comprises: receive described video resource and to control module send work order video processing module, receive work order and to the control module of described video processing module sending controling instruction, circuit driver module frame signal corresponding for described video resource being converted to the differential signal for LED display display.

2. system according to claim 1, is characterized in that, described video processing unit, also comprises:

Before receiving described video resource for described video processing module, receive the USB module of the LED display scan mode of host computer.

3. system according to claim 1 and 2, is characterized in that, the processor module of described Android video control unit is model S5PV210AH-A0.

4. system according to claim 1 and 2, is characterized in that, described circuit driver module comprises monochromatic drive pattern or colored drive pattern.