Title :
A low-power group-based VLD design
Author :
Liu, Cheng-Hung ; Shieh, Bai-Jue ; Lee, Chen-Yi
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
In this paper, a low power variable length code decoder with group-based scheme is proposed. It can save at most 70% power dissipation while maintaining the same throughput rate as the conventional one. This proposal mainly consists of look-up table (LUT) partitioning and group-based memory storing, where the former is used to reduce the power wasted on looking-up unnecessary code-words due to a large LUT, especially those code-words with low probability; the latter is used to reduce the storage space of VLC tables and maintain the flexibility of our hardware decoder.
Keywords :
logic design; power consumption; probability; table lookup; variable length codes; VLC tables; code words; group based memory storage; hardware decoder; logic design; lookup table; low power group based variable length code decoder design; power dissipation; power waste; probability; throughput rate; Codecs; Decoding; Detectors; Discrete cosine transforms; Maintenance engineering; Multimedia systems; Power engineering and energy; Table lookup; Throughput; Transform coding;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1329277
