Display module's edid data burning verification method

Abstract

The invention discloses a method for burning and verifying EDID (Extended Display Identification Data) of a display module. The method comprises the following steps of carrying out EDID editing by utilizing an upper computer and saving the edited EDID as a script file; carrying out data interaction between a communication protocol and an ARM (Advanced RISC Machines) core module after the script file is parsed into the communication protocol; sending the parsed EDID to an FPGA (Field-Programmable Gate Array) signal processing module by the ARM core module; sending the EDID to the display module through an FPGA signal output module by the FPGA signal processing module, reading the EDID of the display module and feeding the EDID back to the upper computer for comparison. The method disclosed by the invention can be suitable for burning and verifying of the EDID of various physical signal interfaces and display modules in various specifications, and the problem that an FPGA program is frequently compiled and upgraded for responding to regulation difference of the EDID of the various physical signal interfaces and the display modules in various specifications at present can be solved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal module testing, in particular to a method for burning and verifying EDID data of a display module. Background technique [0002] EDID (Extended Display Identification Data, Extended Display Identification Data) is a display format specification widely used in display modules developed by the International Video Electronics Standards Association. It contains information such as supplier information, manufacturer presets, maximum image, color Parameters about the display and its performance, such as settings, frequency range, and supported resolutions. The main function of EDID data is to enable the image output device to output a suitable image signal to the display module. The display module must undergo strict EDID read and write function tests before leaving the factory. [0003] According to different application requirements, display modules need to use different physical signal interf...

AI Technical Summary

Problems solved by technology

[0004] 1) When the EDID adjustment process is changed, it is necessary to modify the FPGA program, and then download it to the display module test equipment, which takes a lot of time;

[0005] 2) There are many specifications of the display module, the FPGA program needs to be changed frequently, and there are many versions of the FPGA program, which is inconvenient to manage

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