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http://dx.doi.org/10.6109/jkiice.2007.11.6.1104

Design of CAVLC Decoder for H.264/AVC  

Jung, Duck-Young (C&S 테크놀로지 반도체연구소)
Sonh, Seung-Il (한신대학교 정보통신학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.11, no.6, 2007 , pp. 1104-1114 More about this Journal
Abstract
Digital video compression technique has played an important role that enables efficient transmission and storage of multimedia data where bandwidth and storage space are limited. The new video coding standard, H.264/AVC, developed by Joint Video Team(JVT) significantly outperforms previous standards in compression performance. Especially, variable length code(VLC) plays a crucial pun in video and image compression applications. H.264/AVC standard adopted Context-based Adaptive Variable Length Coding(CAVLC) as the entropy coding method. CAVLC of H.264/AVC requires a large number of the memory accesses. This is a serious problem for applications such as DMB and video phone service because of the considerable amount of power that is consumed in accessing the memory. In order to overcome this problem in this paper, we propose a variable length technique that implements memory-free coeff_token, level, and run_before decoding based on arithmetic operations and using only 70% of the required memory at total_zero variable length decoding.
Keywords
H.264/AVC; VLC; CAVLC; Compression;
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