A method and system for generating mipi signals for mipi module detection

Abstract

The invention discloses a method and system for generating MIPI signals used for MIPI module detection. Obtaining RGB image data through link video signals, and then obtaining MIPI signals from the RGB image data specifically includes the following steps: converting the RGB signals into MIPI Before the signal, buffer the RGB image data converted from the video signal; then obtain the local RGB image pixel clock according to the image timing parameters required by the MIPI module display; according to the image timing parameters, under the RGB image pixel clock, generate Stable local image timing forms an image synchronization signal that meets the MIPI module detection requirements; under the control of the image synchronization signal, performs MIPI conversion on the buffered RGB image data to obtain a MIPI signal that meets the MIPI module detection requirements. The invention provides The MIPI signal generation system used for MIPI module detection can be implemented in an FPGA chip, which has the characteristics of easy implementation, low cost, easy operation, stable work, high reliability, and easy operation.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and more specifically relates to a method and system for generating MIPI signals for MIPI module detection. Background technique [0002] Mobile Industry Processor Interface (MIPI) display technology and MIPI liquid crystal display modules have been widely used in various portable mobile products; in the development and production process of MIPI liquid crystal display modules, output The MIPI liquid crystal display module conducts a number of tests. [0003] In the prior art, independent image signal sources are often used to generate original test images with different resolutions, and are connected to MIPI conversion equipment through cables to convert Low-Voltage Differential Signaling (LVDS) signals into MIPI Signal signals to test modules with different characteristics; due to the low quality of image signal sources, poor accuracy and stability, and large electromagnetic interfer...

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Problems solved by technology

[0003] In the prior art, independent image signal sources are often used to generate original test images with different resolutions, and are connected to MIPI conversion equipment through cables to convert Low-Voltage Differential Signaling (LVDS) signals into MIPI Signal signals to test modules with different characteristics; due to the low quality of image signal sources, poor accuracy and stability, and large electromagnetic interference in the production environment, long connecting cables lead to signal distortion and attenuation, making the converted The MIPI signal is unstable, and there are problems such as flickering, offset, snowflakes or bright lines on the screen displayed by the module; because the MIPI signal source used for testing is unstable, when the screen displayed by the MIPI LCD module is abnormal , it is impossible to judge whether the abnormality is caused by the abnormality of the signal source or the abnormality caused by the failure of the MIPI LCD module, which leads to the low test accuracy of the MIPI LCD module

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