CN112506458A

CN112506458A - Man-machine display control signal remote transmission method for 6U VPX computer module

Info

Publication number: CN112506458A
Application number: CN202011444285.XA
Authority: CN
Inventors: 宋云鹏
Original assignee: Tianjin Jinhang Computing Technology Research Institute
Current assignee: Tianjin Jinhang Computing Technology Research Institute
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-03-16

Abstract

The invention relates to a human-computer display control signal remote transmission method for a 6U VPX computer module, and belongs to the technical field of VPX module display control. The invention respectively adds the signal enhancement module on the VGA and PS/2 display control interface of the computer module, improves the driving capability of signals and realizes the function of remote transmission of VGA and PS/2 signals. The technology can meet the application requirement of the computer module display control signal on the remote display control equipment, and is suitable for the scene that the 6UVPX computer module and the display control equipment need to be arranged and used in a remote distributed mode. The transmission distance of the display control signal cable can reach more than 20 meters. The technology can meet the requirement of the application of the computer module display control signal on the remote display control equipment, and is particularly suitable for the scenes that the computer and the display control equipment need to be arranged and used in a remote distributed mode.

Description

Man-machine display control signal remote transmission method for 6U VPX computer module

Technical Field

The invention relates to the technical field of VPX module display control, in particular to a human-computer display control signal remote transmission method for a 6U VPX computer module.

Background

With the development and progress of science and technology, the requirements of various fields on the performance of computers are higher and higher, and in some special application fields, the computer and the display control equipment are required to be respectively arranged in different spaces, so that the length of a cable between the display control equipment and the computer exceeds a limited length, the length of the cable for VGA, PS/2 and other display control signals is generally not more than 5 meters, and if the length of the signal cable exceeds a limited value, the problems that the video cannot be identified by a PS/2 keyboard, a mouse and the like under unstable display quality can be caused.

Disclosure of Invention

Technical problem to be solved

The technical problem to be solved by the invention is as follows: the technical problem that the display control interface signals of the current computer module cannot be stably transmitted in a long distance is solved.

(II) technical scheme

In order to solve the technical problem, the invention provides a human-computer display control signal remote transmission method for a 6U VPX computer module, wherein the computer module is a 6U module adopting a standard VPX architecture, two paths of high-definition 1080P videos in VGA format can be output through a VPX connector, and the computer module is provided with 2 paths of PS/2 interfaces and can be connected with a keyboard and a mouse of the PS/2 interfaces for input control; and signal enhancement modules are respectively added on VGA and PS/2 display control interfaces of the computer module, so that 20-meter long-distance transmission of VGA and PS/2 signals is realized.

Preferably, the CPU of the computer module may output 2 channels of 1080P high-definition DP video signals DP1 and DP2, so that the 2 channels of DP video signals are converted into 2 channels of 1080P high-definition video in VGA format by 2 CH7517 video conversion chips, the computer module and a Super IO module are interconnected through LPC bus to transmit data, the Super IO module employs F81866AD chip and may receive 2 channels of PS/2 input signals;

the CH7517 video conversion chip converts the DP video signal into a VGA video signal, the VGA format video which is converted and output comprises an RGB signal, an HS signal and a VS signal, wherein the RGB signal is a red signal, a green signal and a blue signal of the VGA signal, and the RGB signal, the HS signal and the VS signal are subjected to signal enhancement on the R, G, B signal through a signal enhancer module; then the RGB signals realize load balance through an ADM4858 chip, and are output to a VPX connector after being output and protected by an SRV 05-4; HS and VS signals are line-field synchronous signals of VGA signals, are respectively amplified through the driving of an SN74AHC1G125 chip and are output to a VPX connector after being output and protected by SRV 05-4.

Preferably, the 2-path PS/2 signal of the Super IO module is connected to a PS/2 signal buffer, the PS/2 signal buffer receives serial data signals sent by a PS/2 keyboard and a mouse, and the PS/2 signal buffer enhances and buffers the serial data signals.

The invention also provides a human-computer display control signal remote transmission system for realizing the method.

Preferably, the system comprises a CPU of a computer module, a CH7517 video conversion chip, a Super IO module, a signal enhancer module, an ADM4858 chip, an SRV05-4, a VPX connector and a PS/2 signal buffer.

Preferably, the signal enhancer module selects a high-speed current feedback type amplification driver LT65571GN from ADI company to realize the enhanced driving of RGB signals.

Preferably, the PS/2 signal buffer is implemented using a PCA9517DP chip.

The invention also provides a method for realizing the application of the computer module display control signal on the remote display control equipment by using the system.

Preferably, the remote display and control device comprises a keyboard, a mouse and a display.

The invention also provides application of the method in the technical field of VPX module display control.

(III) advantageous effects

The invention respectively adds the signal enhancement module on the VGA and PS/2 display control interface of the computer module, improves the driving capability of signals and realizes the function of remote transmission of VGA and PS/2 signals. The technology can meet the application requirement of the computer module display control signal on the remote display control equipment (keyboard, mouse and display), and is suitable for the scene that the 6UVPX computer module and the display control equipment need to be arranged and used in a remote distributed mode. The transmission distance of the display control signal cable can reach more than 20 meters. The technology can meet the application requirement of the computer module display control signal on the remote display control equipment (keyboard, mouse and display), and is particularly suitable for the scenes that the computer and the display control equipment need to be arranged and used in a remote distributed mode.

Drawings

FIG. 1 is a general block diagram of one embodiment of the present invention;

FIG. 2 is a schematic diagram of an RGB signal enhancement module according to an embodiment of the invention;

FIG. 3 is a diagram of a PS/2 signal buffer according to an embodiment of the present invention.

Detailed Description

In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

The invention provides a human-computer display control signal remote transmission method for a 6U VPX computer module, wherein the computer module is a 6U module adopting a standard VPX framework, two paths of high-definition 1080P videos in VGA formats can be output through an onboard VPX connector, and the computer module is provided with 2 paths of PS/2 interfaces and can be connected with a keyboard and a mouse of the PS/2 interfaces for input control; the computer module is additionally provided with a signal enhancement module on the VGA and PS/2 display control interfaces respectively, so that the driving capability of signals is improved, and the 20-meter long-distance transmission of VGA and PS/2 signals is realized.

Fig. 1 shows a general block diagram of an embodiment of the present invention. The CPU of the computer module can output 2 paths of 1080P high-definition DP video signals DP1 and DP2, so that the 2 paths of DP video signals are converted into 2 paths of 1080P high-definition videos in VGA format through 2 CH7517 video conversion chips. The computer module and a Super IO module are interconnected through an LPC bus to transmit data, and the Super IO module adopts an F81866AD chip and can receive 2 paths of PS/2 input signals.

The CH7517 video conversion chip converts DP video signals into VGA video signals, the VGA format video which is converted and output comprises RGB signals, HS signals and VS signals, wherein the RGB signals are red, green and blue signals of the VGA signals, the RGB signals, the HS signals and the VS signals are subjected to signal enhancement on R, G, B signals through a signal enhancer module, the signal enhancer module, namely a signal enhancer selects a high-speed current feedback type amplification driver LT65571GN of ADI company, so that the enhanced driving of the RGB signals is realized, and the schematic diagram is shown in figure 2; then the RGB signals realize load balance through an ADM4858 chip, and are output to a VPX connector after being output and protected by an SRV 05-4; HS and VS signals are line-field synchronous signals of VGA signals, are respectively amplified through the driving of an SN74AHC1G125 chip and are output to a VPX connector after being output and protected by SRV 05-4. The VGA signal enhancement scheme solves the problem that the display quality of a VGA signal is reduced due to signal attenuation in the transmission process of a long cable. The EDID information of the computer module VGA is stored on the AT24C02 chip on the board, so that the EDID information can be forcibly output and displayed without handshaking operation with the display, and the waiting time of connection between the display and the computer is reduced.

The 2-path PS/2 signal of the Super IO module is connected with a PS/2 signal buffer, the PS/2 signal buffer adopts a PCA9517DP chip to receive serial data signals sent by a PS/2 keyboard and a mouse, and a schematic diagram is shown in FIG. 3. The PS/2 signal buffer enhances and buffers signals, and effectively solves the problems that equipment cannot be identified due to signal attenuation caused by long-distance transmission of PS/2 signals and the like.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A human-computer display control signal remote transmission method for a 6U VPX computer module is characterized in that the computer module is a 6U module adopting a VPX framework, two paths of VGA format high-definition 1080P videos can be output through a VPX connector, and the computer module is provided with 2 paths of PS/2 interfaces and can be connected with a keyboard and a mouse of the PS/2 interfaces for input control; and signal enhancement modules are respectively added on VGA and PS/2 display control interfaces of the computer module, so that 20-meter long-distance transmission of VGA and PS/2 signals is realized.

2. The method of claim 1, wherein the CPU of the computer module can output 2 channels of 1080P high-definition DP video signals DP1 and DP2, so that the 2 channels of DP video signals are converted into 2 channels of 1080P high-definition video in VGA format through 2 CH7517 video conversion chips, the computer module and a Super IO module are interconnected through LPC bus to transmit data, the Super IO module adopts F81866AD chip and can receive 2 channels of PS/2 input signals;

3. The method of claim 2, wherein the 2 PS/2 signals of the Super IO module are connected to a PS/2 signal buffer, the PS/2 signal buffer receives serial data signals transmitted from a PS/2 keyboard and a mouse, and the PS/2 signal buffer enhances and buffers the serial data signals.

4. A remote human-machine display control signal transmission system for implementing the method as claimed in claim 1 or 2 or 3.

5. The system of claim 4, comprising a CPU of a computer module, a CH7517 video conversion chip, a Super IO module, a signal enhancer module, an ADM4858 chip, SRV05-4, a VPX connector, a PS/2 signal buffer.

6. The system of claim 4, wherein the signal enhancer module selects the ADI high speed current feedback type amplification driver LT65571GN to realize the enhanced driving of RGB signals.

7. The system of claim 4 wherein the PS/2 signal buffer is implemented using a PCA9517DP chip.

8. A method for realizing application of computer module display control signals on a remote display control device by using the system of any one of claims 4 to 7.

9. The method of claim 8, wherein the remote display control device comprises a keyboard, a mouse, and a display.

10. Use of the method according to claim 1, 2 or 3 in the technical field of VPX module display control.