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

A technology of intra-frame prediction and structure design, applied in the field of video encoding and decoding, can solve the problems of large decoding calculation, large data throughput, and high algorithm complexity, and achieve the effect of improving decoding efficiency

Inactive Publication Date: 2010-12-01
XI AN JIAOTONG UNIV
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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 an

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

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Embodiment Construction

[0027] figure 1 As shown, in the parallel array intra-frame prediction decoding system, it mainly includes three main modules. First, according to the intra-frame macroblock and sub-block prediction mode obtained from the analysis of the code stream, the reference data required by the sub-block is obtained in the reference pixel access module, and enters the prediction calculation module for intra-frame prediction operation, and the obtained prediction data Before entering the residual adding module, the image data is recovered through parallel synchronization and the IDCT data of the corresponding sub-block, and the dependent pixels that need subsequent sub-blocks are stored in the reference pixel reading module, and the reading needs through the sliding window of pixels.

[0028] As shown in Fig. 2(a), (b) and (c), the predictive computing unit PE that can be reused in multiple predictive modes is firstly designed, and a four-input adder structure is designed according to t...

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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...

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Application Information

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IPC IPC(8): H04N7/26H04N7/50H04N19/42H04N19/50
Inventor 兰旭光杨志远韩骞逸李兴玉郑南宁
Owner XI AN JIAOTONG UNIV
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