Multi-channel video output framework of video processing chip

Abstract

The invention discloses a multi-channel video output framework of a video processing chip, which is built based on the bus standard, and is high in efficiency, low in power consumption, and reusable. The multi-channel video output framework comprises a bus interface unit including a plurality of independent data source acquisition interfaces; an independent processing channel unit including a plurality of video processing channels for performing data expansion, color space conversion and color enhancement operations on the received data; an exchanging matrix for gating and pairing each data source acquisition interface with each video processing channel; a combining processing channel unit for performing RGB (red, green and blue) color adjustment, semi-transparent overlapping and channel combining operations on each video processing channel; a timing sequence generator for generating a VGA (video graphics array) timing sequence, a TCON (time controller) timing sequence and an LCD (liquid crystal display) timing sequence, and driving output and display; an APB (advanced peripheral bus) register unit for directly mapping each video processing channel to the address space of an external bus system; and an output control unit for performing data format matching to the data processed by the processing channel combining unit and finishing the data output according to the timing sequence control signal.

Description

technical field [0001] The invention relates to a video processing chip, in particular to a bus standard-based multi-channel video output system with high efficiency, low power consumption and reusable video processing chip. Background technique [0002] A video processing system usually includes a video input module, video memory data control and a video output module. The video input module obtains video image data from the outside, and performs data processing, such as denoising, color enhancement, resolution adjustment, etc., and then writes it to into the external video memory; the video memory data control module is a bridge connecting the video processing chip and the external video memory, which is responsible for the arbitration of the video memory and data writing and reading; the video output module reads the video image data from the video memory through the video memory data controller, Perform color pixel expansion, color space conversion, and timing generation...

AI Technical Summary

Problems solved by technology

[0003] Most of the current video processing chip output modules use the method of directly connecting to the video memory controller, and read the data in the video memory through the video memory controller. Difficulties in timing specification and impact design system modification and module reuse

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