Method and system for generating MIPI (mobile industry processor interface) signals for MIPI module detection

Abstract

The invention discloses a method and a system for generating MIPI (mobile industry processor interface) signals for MIPI module detection. RGB image data are acquired through link video signals and then MIPI signals are acquired through the RGB image data. To be specific, the method comprises steps as follows: before the RGB signals are converted into the MIPI signals, the RGB image data converted from the video signals are cached; a local RGB image pixel clock is acquired according to required image timing sequence parameters displayed by an MIPI module; a stable local image timing sequence is generated under the control of the RGB image pixel clock according to the image timing sequence parameters, and image synchronization signals meeting the MIPI module detection requirement are generated; under the control of the image synchronization signals, MIPI conversion is performed on the cached RGB image data, and the MIPI signals meeting the MIPI module detection requirement are acquired. The system for generating MIPI signals for MIPI module detection can be realized on one FPGA (field programmable gate array) chip and has the characteristics of easiness in implementation, lower cost, convenience in operation, work stability, high reliability and the like.

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 liquid crystal display module, which leads to the low test accuracy of the MIPI liquid crystal display module

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