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Optical Engineering

Fast coeff_token decoding method and new memory architecture design for an efficient H.264/AVC context-based adaptive variable length coding decoder
Author(s): Yong Ho Moon; Kun Su Yoon; Seok-Woon Ha
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Paper Abstract

A fast coeff_token decoding method based on new memory architecture is proposed to implement an efficient context-based adaptive variable length-coding (CAVLC) decoder. The heavy memory access needed in CAVLC decoding is a significant issue in designing a real system, such as digital multimedia broadcasting players, portable media players, and mobile phones with video, because it results in high power consumption and delay in operations. Recently, a new coeff_token variable-length decoding method has been suggested to achieve memory access reduction. However, it still requires a large portion of the total memory access in CAVLC decoding. In this work, an effective memory architecture is designed through careful examination of codewords in variable-length code tables. In addition, a novel fast decoding method is proposed to further reduce the memory accesses required for reconstructing the coeff_token element. Only one memory access is used for reconstructing each coeff_token element in the proposed method.

Paper Details

Date Published: 1 December 2009
PDF: 8 pages
Opt. Eng. 48(12) 127002 doi: 10.1117/1.3274970
Published in: Optical Engineering Volume 48, Issue 12
Show Author Affiliations
Yong Ho Moon, Gyeongsang National Univ. (Korea, Republic of)
Kun Su Yoon, Korea Aerospace Industries Ltd. (Korea, Republic of)
Seok-Woon Ha


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