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.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Liu P-S, Chen J-W, Lin Y-L (2007a) A hardwired context-based adaptive binary arithmetic encoder for H. 264 advanced video coding. In Proceedings of international symposium on VLSI design, automation and test, pp 1–4
Liu P-S, Chen J-W, Lin Y-L (2007a) A hardwired context-based adaptive binary arithmetic encoder for H. 264 advanced video coding. In Proceedings of international symposium on VLSI design, automation and test, pp 1–4
Liu P-S, Chen J-W, Lin Y-L (2007a) A hardwired context-based adaptive binary arithmetic encoder for H. 264 advanced video coding. In Proceedings of international symposium on VLSI design, automation and test, pp 1–4
Kuo C-C, Lei S-F (2006) Design of a low power architecture for CABAC encoder in H.264. In: Proceedings of IEEE Asia Pacific conference on circuits and systems, pp 243–246
Ho BL (2006) Performance and complexity analyses of H.264/AVC CABAC entropy coder. Master of engineering thesis, Department of Electrical and Computer Engineering, National University of Singapore
Osorio RR, Bruguera JD (2006) High-throughput architecture for H.264/AVC CABAC compression system. IEEE Trans Circuits Syst Video Technol 16(11):1376–1384
Chen J-W, Chang C-R, Lin Y-L (2005) A hardware accelerator for context-based adaptive binary arithmetic decoding in H.264/AVC. Proc IEEE Int Symp Circ Syst 5:4525–4528
Liu P-S, Chen J-W, Lin Y-L (2007a) A hardwired context-based adaptive binary arithmetic encoder for H. 264 advanced video coding. In Proceedings of international symposium on VLSI design, automation and test, pp 1–4
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2011 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
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
Download citation
DOI: https://doi.org/10.1007/978-3-642-14703-6_5
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-14702-9
Online ISBN: 978-3-642-14703-6
eBook Packages: EngineeringEngineering (R0)