Title :
Real-time video compression using differential vector quantization
Author :
Fowler, James E., Jr. ; Adkins, Kenneth C. ; Bibyk, Steven B. ; Ahalt, Stanley C.
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
fDate :
2/1/1995 12:00:00 AM
Abstract :
This paper describes hardware that has been built to compress video in real time using full-search vector quantization (VQ). This architecture implements a differential-vector-quantization (DVQ) algorithm and features a special-purpose digital associative memory, the VAMPIRE chip, which has been fabricated in 2 μm CMOS. We describe the DVQ algorithm, its adaptations for sampled NTSC composite-color video, and details of its hardware implementation. We conclude by presenting both numerical results and images drawn from real-time operation of the DVQ hardware
Keywords :
CMOS memory circuits; associative processing; content-addressable storage; differential pulse code modulation; real-time systems; vector quantisation; video coding; CMOS; DPCM; VAMPIRE chip; architecture; differential vector quantization; full-search vector quantization; hardware; numerical results; real-time operation; real-time video compression; sampled NTSC composite-color video; special-purpose digital associative memory; Associative memory; Data compression; Hardware; Image coding; NASA; Pixel; Speech; Tiles; Vector quantization; Video compression;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
