High efficiency video signal coding-decoding system and related method

Abstract

The invention is a video frequency signal processing system and relative method. The system codes a coding bit stream according to character of decoding bit stream. The system has a storing device, which is used to store the decoding bit stream and data of it. The system also has a coder, which is connected to a memory device electrically, which is used to code the coding bit stream according to the coding type. The system includes a decoder, which is connected to memory device electrically, which is used to transmit the coding type to the coder.

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...

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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

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