High-definition embedded video encoding and decoding system based on SoC

Abstract

The invention belongs to the technical field of photoelectricity product applications and particularly relates to a high-definition embedded video encoding and decoding system based on an SoC. In the system, an Ethernet module receives digital video information output by a high-definition network camera, after peeling of a protocol stack, a naked code stream which accords with an H.264 protocol is written into an external memory module through an inner bus; an SATA hard disc module reads images from the external memory module for storage; an encoding and decoding SoC core reads the images from the external memory module, then decoding is carried out, finally initial images after decoding are written into the external memory module; the encoding and decoding SoC core reads the initial images from the external memory module, and then displaying is carried out through a high-definition display module, or the initial images are subjected to processing displaying through an FPGA processing display module. According to the system, real-time video H.264 encoding and decoding, video stream network transmission, non-encoded video inputting and outputting, high-definition video stable real-time network transmission, encoding and decoding processing and display outputting are achieved.

Description

technical field [0001] The invention belongs to the field of optoelectronic product application technology, and in particular relates to an SoC-based high-definition embedded video encoding and decoding system. Background technique [0002] Video stream coding technology effectively solves the problem of massive video data transmission under limited bandwidth. How to design a good codec to encode and decode video data in real time and efficiently has become a non-negligible problem that restricts the performance of the entire system. [0003] At present, there are mainly the following schemes for video coding and decoding: 1) DSP-based: DSP completes image storage, decoding, and network transmission. Since DSP usually does not have a powerful operating system, its control method is inflexible and has a single function, which is not suitable for system control; 2) Based on PC: soft decompression, it is difficult to apply more channels in real time; 3) Based on FPGA: encoding...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the video codec system in the prior art is difficult to take into account the technical requirements of real-time performance, flexible control mode and low development difficulty

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