Towards MPEG-4 part 10 system on chip: a VLSI prototype for context-based adaptive variable length coding (CAVLC)

Author

Amer, Ihab ; Badawy, Wael ; Jullien, Graham

Author_Institution

Adv. Technol. Inf. Process. Syst., Calgary, Alta., Canada

fYear

2004

fDate

13-15 Oct. 2004

Firstpage

275

Lastpage

279

Abstract

The paper presents a VLSI prototype for context-based adaptive variable length coding (CAVLC). This scheme is a part of the lossless compression process in the MPEG-4 Part 10 standard. It is applied to the quantized transform coefficients of the luminance component during the entropy coding process. In combination with previous transformations and quantizations, it can result in significantly increased compression ratio. The developed architecture is prototyped and simulated using ModelSim 5.4®. It is synthesized using Synplify Pro 7.1®. The results show that the architecture satisfies the real-time constraints required by different digital video applications.

Keywords

VLSI; adaptive codes; data compression; entropy codes; hardware description languages; hardware-software codesign; quantisation (signal); system-on-chip; variable length codes; video coding; MPEG-4 Part 10 standard; ModelSim 5.4; Synplify Pro 7.1; VHDL language; VLSI prototype; context-based adaptive variable length coding; digital video; entropy coding; lossless compression process; luminance component; quantization; quantized transform coefficients; real-time constraints; system on chip; Arithmetic; Discrete transforms; Entropy coding; MPEG 4 Standard; Prototypes; Quantization; System-on-a-chip; Very large scale integration; Video coding; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems, 2004. SIPS 2004. IEEE Workshop on

Print_ISBN

0-7803-8504-7

Type

conf

DOI

10.1109/SIPS.2004.1363062

Filename

1363062