Method for converting single link lvds video signal to mipi video signal

Abstract

The invention discloses a method for converting an LVDS video signal of a single LINK into a MIPI video signal, comprising: step 1, receiving and demodulating the LVDS video signal of a single LINK, and generating LVDS parallel demodulation data and an LVDS pixel clock; step 2, Carry out video decoding to parallel demodulation data, generate LVDS video source data and LVDS video source synchronous signal, LVDS pixel clock is converted into LVDS video source pixel clock; Step 3, sample LVDS video source signal with LVDS video source pixel clock and Cache, convert LVDS video source signal into RGB video signal; the process of converting LVDS video source signal into RGB video signal includes: generating RGB video clock, making the frequency of RGB video clock the same as the LVDS video source pixel clock, using RGB video clock from Read out the signal in the buffer area, separate the RGB video source data and the RGB video synchronous signal, output sequentially respectively, thereby form the RGB video signal together with the RGB video clock; Step 4, convert the RGB video signal into a MIPI video signal.

Description

technical field [0001] The invention relates to the field of display and testing of liquid crystal modules, in particular to a method for converting a single LINK LVDS video signal into a MIPI video signal. Background technique [0002] Liquid crystal display module (Liquid Crystal Display Module, hereinafter referred to as liquid crystal module) is a key component for liquid crystal display equipment to display normally. It is composed of liquid crystal screen, backlight original, display processing chip and circuit. The structure of the liquid crystal module is precise, the manufacturing process is complicated, and the production process requires high requirements. In order to ensure the yield rate during production, it is necessary to generate various test video signals through a dedicated liquid crystal module testing device and input them to the liquid crystal module for display. Strict and comprehensive testing of its display effect. At present, the display interface ...

AI Technical Summary

Problems solved by technology

[0004] However, the testing device of MIPI LCD module needs to output the same MIPI test signal, but the existing common LCD module testing device does not have this function, and the common LCD module continues to be produced, and its testing device has not yet entered the replacement cycle will continue to use

Although module manufacturers also produce MIPI LCD modules, in order to protect investment and reduce production costs, it is impossible to eliminate existing equipment and re-purchase expensive special test equipment for MIPI modules in large quantities.

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