Very large-scale integration (VLSI) structural design method of parallel array-type intraframe prediction decoder

Abstract

The invention discloses a design method of a parallel array-type intraframe prediction decoder. By adopting an intraframe parallel array technique, the parallel decoding of the sub-macro-blocks is achieved, and the decoding efficiency of the intraframe macro-blocks is improved. By adopting a multi-prediction mode multiplexing technique, the intraframe prediction calculation units PE are realized. Four PE units in each sub-macro-block predict four pixels in parallel. By adopting a self-adapting production line technique, the prediction decoding of the self-adapting production line of the sub-macro-blocks in the PE array is achieved. By adopting a parallel prediction sequence technique, the prediction sequence of the parallel decoding is realized according to the dependency relationship of the reference pixels, and the data conflict is solved. By adopting a double-sliding window mechanism, the requirement of double PE arrays on the parallel decoding of the sub-macro-blocks is met, and the parallel synchronization of the PE arrays is coordinated. By the method, the requirements on the decoding of the high-definition and ultra-high-definition video can be satisfied; and the decoding efficiency and performances are improved.

Description

technical field [0001] The invention belongs to the field of video coding and decoding, and in particular relates to a structural design method of a parallel array intra-frame prediction decoder. Background technique [0002] With the rapid development of the Internet and the upgrading of terminal display devices, people have higher and higher requirements for high-definition video service quality. The most direct way to solve the problem of transmission and storage of massive video data is to encode and decode video files. H.264 is a new generation of excellent encoding and decoding standards, but for high-definition video files, there are high algorithm complexity and data throughput at the decoding end. volume problem. The intra-frame prediction algorithm accounts for about 30% of the computation of decoding key frames. For a 1080P high-definition video, the number of macroblocks in one frame is 8100, and the decoding computation is huge. Designing an efficient and real...

AI Technical Summary

Problems solved by technology

The most direct way to solve the problem of transmission and storage of massive video data is to encode and decode video files. H.264 is a new generation of excellent encoding and decoding standards, but for high-definition video files, there are high algorithm complexity and data throughput at the decoding end. volume problem

The intra-frame prediction algorithm accounts for about 30% of the computation of decoding key frames. For 1080P high-definition video, the number of macroblocks in one frame is 8100, and the decoding computation is huge.

Images