Title :
A parallel vector quantization processor featuring an efficient search algorithm for real-time motion picture compression
Author :
Nozawa, Toshiyuki ; Imai, Makoto ; Fujibayashi, Masanori ; Ohmi, Tadahiro
Author_Institution :
Dept. of Electron. Eng., Tohoku Univ., Sendai, Japan
Abstract :
A parallel vector quantization (VQ) processor has been developed aiming at real-time compression of motion pictures using 0.35 μm CMOS technology. The chip employs a new simple search algorithm for VQ encoding. As a result, the die area of the chip is decreased to 33% of that of conventional fully parallel design. This chip can handle 2048 template vectors by a single chip and is applicable to real-time compression of 30 frames/sec full-color VGA (640×480 pixels) images. The chip operates at 33 MHz with power dissipation of 790 mW under 2.5 V power supply
Keywords :
CMOS digital integrated circuits; data compression; digital signal processing chips; parallel architectures; real-time systems; vector quantisation; video coding; 0.35 micron; 2.5 V; 307200 pixel; 33 MHz; 480 pixel; 640 pixel; 790 mW; CMOS technology; VQ encoding; die area; full-color VGA; parallel vector quantization processor; power dissipation; real-time compression; real-time motion picture compression; search algorithm; template vectors; CMOS technology; Decoding; Electronic mail; Electronics industry; Hardware; Image coding; Industrial electronics; Motion pictures; Pixel; Vector quantization;
Conference_Titel :
Design Automation Conference, 2001. Proceedings of the ASP-DAC 2001. Asia and South Pacific
Conference_Location :
Yokohama
Print_ISBN :
0-7803-6633-6
DOI :
10.1109/ASPDAC.2001.913271
