A 1 Gbin/s CABAC encoder for H.264/AVC

Wei Fei*, Dajiang Zhou, Satoshi Goto

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    20 Citations (Scopus)


    In this paper, we propose a 1 Gbin/s context-based adaptive binary arithmetic coding (CABAC) encoder architecture for beyond-HDTV applications. CABAC is a crucial part in H.264/AVC main and high profiles that provides a great compression ratio at the expense of high computational complexity. And it is also considered as a very efficient coding method in the developing high-efficiency video coding (HEVC) standard. We try to accelerate the CABAC encoder to provide a high throughput to meet the requirement of beyond-HDTV video. Our design includes the binarization, context modeling and binary arithmetic encoding (BAE) parts and achieves a throughput of 4 bins per cycle. The synthesis result using SMIC 90nm shows that the logic gate count is 36.2K in all and the encoder engine can work at a maximum frequency of 279MHz. Thus the overall throughput can reach over 1 Gbin/s. In our design, the 460 contexts are assigned to 6 SRAMs to attain efficient context modeling. And the binarization part is also optimized to enhance the throughput with low hardware cost.

    Original languageEnglish
    Title of host publicationEuropean Signal Processing Conference
    Number of pages5
    Publication statusPublished - 2011
    Event19th European Signal Processing Conference, EUSIPCO 2011 - Barcelona, Spain
    Duration: 2011 Aug 292011 Sept 2


    Other19th European Signal Processing Conference, EUSIPCO 2011

    ASJC Scopus subject areas

    • Signal Processing
    • Electrical and Electronic Engineering


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