A low-power variable length decoder for MPEG-2 based on successive decoding of short codewords

Author

Lee, Sung-Won ; Park, In-Cheol

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea

Volume

50

Issue

2

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

73

Lastpage

82

Abstract

This paper presents a low-power variable length decoder exploiting the statistics of successive codewords. The decoder employs small look-up tables working as fixed caches to reduce the number of activations of a variable length code detector where considerable power is consumed. The power simulation results estimated using PowerMill show that 35% energy is reduced on the average compared to the previous low-power scheme.

Keywords

VLSI; code standards; data compression; decoding; digital signal processing chips; low-power electronics; table lookup; variable length codes; video coding; MPEG-2; fixed caches; look-up tables; low-power decoder; short codewords; successive decoding; variable length decoder; Classification tree analysis; Decoding; Detectors; Discrete cosine transforms; Multimedia systems; Statistics; Sun; Table lookup; Throughput; Transform coding;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/TCSII.2003.808893

Filename

1189199