Abstract
In this chapter, context-modeling-related functions of the proposed CABAC encoder design are introduced including context model selection of unit CS1 and context model access of unit CA. A scheme of context line access and local buffering is proposed to reduce RAM access frequency. During each RAM access, multiple context models (8 models) are read from or written to context RAM instead of single context model access in most designs. Statistical data of CACTI RAM modeling tool [WSCACTI] demonstrates that context RAM power consumption of the proposed scheme can be lower when RAM access frequency reduces to 33.9% of the designs with single context model access architecture. With local context line buffering and elaborate context model reallocation of context RAM, efficient context model access can be achieved.
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© 2011 Springer-Verlag Berlin Heidelberg
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Tian, X., Le, T.M., Lian, Y. (2011). Efficient Architecture for Context Modeling in the CABAC Encoder. In: Entropy Coders of the H.264/AVC Standard. Signals and Communication Technology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-14703-6_5
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DOI: https://doi.org/10.1007/978-3-642-14703-6_5
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