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VGA video graphic array and working method thereof

A technology of video graphics array and working method, which is applied in the direction of TV, color TV, image communication, etc. It can solve the problems of affecting customer experience, poor EDID information processing, and VGA video cannot be displayed on the display, so as to facilitate centralized monitoring and increase monitoring Effects of Quantity and Flexibility

Inactive Publication Date: 2018-06-12
SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current array display based on VGA video, there is no special and effective processing technology for the connection of different specifications of the display. If the EDID information is not processed well, it is very likely that the display cannot display VGA video, which will affect the customer experience.

Method used

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  • VGA video graphic array and working method thereof
  • VGA video graphic array and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 shown.

[0025] A VGA video graphics array includes a video array control board provided with four VGA video inputs and two VGA video outputs; the VGA video input is connected to a display display through a video extension circuit and a video switching circuit in turn; the video switching circuit is connected to a control unit connect.

Embodiment 2

[0027] Such as figure 2 shown.

[0028] A kind of working method of VGA video graphics array as described in embodiment 1, comprises steps as follows:

[0029] 1) The control unit detects the number of display monitors; when the control unit detects that more than one display monitor is connected, it actively reads the EDID information of the display monitor to the control unit;

[0030] 2) If the models of the display monitors are different, the control unit compares and reorganizes the EDID information of different monitors to ensure that the resolution of the output RGB signal after the PC reads the EDID information can be displayed on all display monitors;

[0031] The specific process of comparison and reorganization is that the control unit compares the read EDID information of multiple displays one by one at the byte level, and if the byte information is different, the EDID information of the display with a lower specification shall prevail for reorganization;

[003...

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PUM

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Abstract

The invention relates to a VGA video graphic array and a working method thereof. According to the VGA video graphic array, when a DDC signal is processed, firstly EDID information of two display screens is read after a control unit circuit is powered on, new EDID information is synthesized after analysis and processing and put into an EEPROM of a DDC signal port of each PC, and the synthesized EDID information is read after the PC is started. According to the VGA video graphic array, any switching function of the video graphic array based on a VGA signal is achieved by comparing and reorganizing the EDID information to ensure that the resolution of an output RGB signal after the PC reads the EDID information can be displayed on all the display screens; the number of monitoring and the flexibility of the computer are greatly increased to facilitate centralized monitoring of multiple computers, especially server clusters.

Description

technical field [0001] The invention relates to a VGA video graphic array and a working method thereof, belonging to the technical field of VGA video signal switching. Background technique [0002] The development of computer technology has forced the continuous improvement of computer performance indicators, but the development of computer applications is even faster than the computer itself. In many technical fields, a single computer can no longer meet the needs of the entire computer application system. It usually requires two or more computers to form a fully functional system, and a huge system even requires dozens of computers to build together. The management of computer systems usually requires multiple engineers in different computer application fields to monitor and operate at the same time. In this case, the video graphics array plays an important role, and multiple people can monitor multiple computer devices at the same time. [0003] Video Graphics Array (Eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/268G06F3/14
CPCG06F3/1423H04N5/268
Inventor 吴之光于治楼张廷银
Owner SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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