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  4. Architecture Design of Context-Based Adaptive Variable-Length Coding for H.264/AVC
 
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Architecture Design of Context-Based Adaptive Variable-Length Coding for H.264/AVC

Resource
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS—II: EXPRESS BRIEFS, VOL. 53, NO. 9, SEPTEMBER 2006
Journal
IEEE Transactions on Circuits and Systems II: Express Briefs
Journal Volume
53
Journal Issue
9
Pages
832 - 836
Date Issued
2006-09
Date
2006-09
Author(s)
Chen, Tung-Chien
Huang, Yu-Wen
Tsai, Chuan-Yung
Hsieh, Bing-Yu
LIANG-GEE CHEN  
DOI
10.1109/TCSII.2006.880014
DOI
246246/200611150121898
URI
http://ntur.lib.ntu.edu.tw//handle/246246/200611150121898
https://www.scopus.com/inward/record.uri?eid=2-s2.0-34047165800&doi=10.1109%2fTCSII.2006.880014&partnerID=40&md5=79a0422a9a0ae333e048727a8bec0e49
Abstract
Context-based adaptive variable-length coding (CAVLC) is a new and important feature of the latest video coding standard, H.264/AVC. The direct VLSI implementation of CAVLC modified from the conventional run-length coding architecture will lead to low throughput and utilization. In this brief, an efficient CAVLC design is proposed. The main concept is the two-stage block pipelining scheme for parallel processing of two 4 4 blocks. When one block is processed by the scanning engine to collect the required symbols, its previous block is handled by the coding engine to translate symbols into bitstream. Our dual-block-pipelined architecture doubles the throughput and utilization of CAVLC at high bit rates. Moreover, a zero skipping technique is adopted to reduce up to 90% of cycles at low bit rates. Last but not least, Exp-Golomb coding for other general symbols and bitstream encapsulation for the network abstraction layer are integrated with CAVLC as a complete H.264/AVC baseline profile entropy coder. Simulation shows that our design is capable of real-time processing for 1920 1088 30-fps videos with 23.6 K logic gates at 100 MHz.
Subjects
Context-based adaptive variable-length coding
(CAVLC)
H.264/AVC
VLSI architecture
Publisher
Taipei:National Taiwan University Dept Elect Engn
Type
journal article
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