Video frequency signal multi-processor parallel processing method

Abstract

A multiple processor parallel-processing method of video signal includes using sub block processor to carry out zonal parallel processing on complete frame of image and utilizing each sub block processor to process one zone of video image, enabling to carry out communication between those processors through video I / O interface and carrying out communication with sub block processor by synthetic processor through communication interface for realizing integration of processing results from each sub block processor.

Description

technical field [0001] The invention relates to a parallel video signal processing method, in particular to a high-resolution digital video signal encoding and decoding processing method. Background technique [0002] The data volume of digital video signals is very large, especially the real-time processing of high-resolution video signals requires huge data processing capabilities. [0003] At present, DSP (Digital Signal Processor) is commonly used for video signal processing, and a dedicated DSP is specially designed for video and audio signal processing. These processors have dedicated video and audio data input and output interfaces, and some also have certain video co-processing. Capabilities, such as data format conversion, VLC (variable length coding), VLD (variable length decoding) and OSD (on-screen display), etc., can be very convenient for processing digital video and audio signals, such as compression coding and decoding, etc., such Processors are called multi...

AI Technical Summary

Problems solved by technology

[0005] However, the processing capacity of multimedia processors is limited, and people's requirements for video signal resolution are getting higher and higher. The processing capacity of a single processor often cannot meet the requirements for processing high-resolution video signals.

For example, the current single-chip multimedia processor cannot realize the real-time video compression coding of H.264, AVS or MPEG4 standards for high-definition video signals in 1080i format, let alone process video signals with higher resolutions such as 4 megapixels.

One solution is to use multi-chip processors to process high-resolution video signals in parallel. However, since video processing often requires signal feedback, this requires high-speed data communication among parallel processing processors. The common method is to use increasing Dual-port RAM or FIFO realizes high-speed data communication between each other, but this method is more complicated to implement, difficult to develop, and the cost of dual-port RAM and FIFO is higher, so the practicability is poor

At present, there are also multi-processor parallel processing methods that use differential high-speed serial interfaces to realize inter-processor communication. However, such processors with differential high-speed serial interfaces are all high-end processors at present, and the cost is relatively high.

Images