High efficiency video signal coding-decoding system and related method

Abstract

A video signal processing system and related methods. The system is used to encode an encoded bit stream based on characteristics of a decoded bit stream. The system has a storage device for storing data of the decoded bit stream and the encoded bit stream. The system also has an encoder, electrically connected to the storage device, for encoding the encoded bit stream according to the encoding type of the decoded bit stream. The system also includes a decoder, electrically connected to the storage device, for decoding the decoded bit stream and passing the encoding type of the decoded bit stream to the encoder. The encoding type of the encoded bit stream corresponds to the encoding type of the decoded bit stream to achieve the purpose of limiting the maximum memory bandwidth required by the encoder and the decoder.

Description

technical field [0001] The invention relates to a video signal processing system and a related method, in particular to a high-efficiency video signal encoding and decoding system and a related method. Background technique [0002] With the improvement of the calculation speed of electronic circuits, calculations that consume a lot of system resources (such as video signal processing) have become one of the development priorities of electronic devices. General video signal processing specifications usually include several encoding types to meet the encoding requirements of various video signal data. Taking the Moving Picture Coding Experts Group (MPEG, Moving Picture Coding Experts Group) standard as an example, the coding methods for a picture include intra coding (Intra), predictive coding (Predictive), and bidirectional predictive coding (Bidirectionally Predictive) and other coding methods . An intra-coded picture is a picture that is coded independently, and the codin...

AI Technical Summary

Problems solved by technology

When the encoder 102 is encoding a first bidirectional motion compensation macroblock, once the decoder 104 happens to decode a second bidirectional motion compensation macroblock at the same time, the encoder 102 and the decoder 104 will At the same time, it enters the operation mode that consumes the maximum memory bandwidth, therefore, the required memory bandwidth suddenly increases, and it shares the same memory interface circuit and the same memory device, so the memory bandwidth provided by the system 100 cannot meet the requirements in an instant. Simultaneous encoding of the first bidirectional displacement compensation macroblock and decoding of the second bidirectional displacement compensation macroblock are required, that is to say, the speed of encoding or decoding operation is reduced, so that the system 100 cannot realize the requirement of real-time encoding or decoding

[0008] As can be seen from the above, when the known video signal processing system shares the same memory interface circuit and the same memory, once the encoder and the decoder enter the operation mode that consumes the maximum memory bandwidth at the same time, the required memory The sudden increase in bandwidth reduces the performance of encoding and decoding, so the known video signal processing system cannot continuously realize the requirements of real-time encoding or decoding

Images