A high quality digital HDTV codec

Author

Netravali, Arun ; Petajan, Eric ; Knauer, Scott ; Matthews, Kim ; Safranek, Robert J. ; Westerink, Peter

Author_Institution

AT&T Bell Lab., Murray Hill, NJ, USA

fYear

1991

fDate

4-6 Nov 1991

Firstpage

451

Abstract

A digital video codec has been developed for the Zenith/AT&T HDTV system for terrestrial broadcast over NTSC taboo channels. The codec works on an image progressively scanned with 1575 scan lines every 1/30th of a second and achieves a compression ratio of approximately 50 to 1. The transparent image quality is achieved using motion compensated transform coding coupled with a perceptual criterion to determine the quantization accuracy required for each transform coefficient. The combination of a sophisticated encoded video format and advanced bit error protection techniques results in a highly robust reception and decoding of the compression video signal

Keywords

codecs; digital communication systems; high definition television; video equipment; NTSC taboo channels; Zenith/AT&T HDTV system; compression ratio; high quality digital HDTV codec; image coding; motion compensated transform coding; perceptual criterion; progressive scanning; terrestrial broadcast; Digital video broadcasting; HDTV; Image coding; Image quality; Protection; Quantization; Robustness; Transform coding; Video codecs; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 1991. 1991 Conference Record of the Twenty-Fifth Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

0-8186-2470-1

Type

conf

DOI

10.1109/ACSSC.1991.186490

Filename

186490