ZENITH-AT&T DIGITAL HDTV SYSTEM TO EXTEND BROADCAST AREA FCC ADVISORY COMMITTEE CERTIFIES SYSTEM FOR TESTING
ZENITH-AT&T DIGITAL HDTV SYSTEM TO EXTEND BROADCAST AREA
FCC ADVISORY COMMITTEE CERTIFIES SYSTEM FOR TESTING
WASHINGTON, Nov. 6 /PRNewswire/ -- The all-digital high-definition television system developed by Zenith Electronics Corp. (NYSE: ZE) and AT&T (NYSE: T) would transmit interference-free signals to a larger geographical area than possible through conventional broadcasts or other proposed HDTV systems, the companies said today when the system was certified for industry testing.
A new "bi-rate coding" system developed for the Zenith-AT&T Digital Spectrum Compatible all-digital HDTV system, "extends coverage area so that many more people will get HDTV programming," said Wayne C. Luplow, Zenith's division vice president of advanced television research and development.
Bi-rate coding was disclosed for the first time as part of the "final certification" process with the Federal Communications Commission's Advisory Committee on Advanced Television Services. Final certification documentation, a prerequisite for system testing, includes detailed technical descriptions of the Zenith-AT&T HDTV system. The Advisory Committee certified the system today for testing, which is scheduled to begin in January 1992.
Arun Netravali, AT&T Bell Laboratories research director and HDTV project manager, said, "The ability to extend the coverage area of HDTV signals is significant, particularly in areas of high interference such as major cities. Our HDTV system is expected to deliver excellent picture quality even under those circumstances."
In addition to the description of bi-rate coding, the final certification documentation also detailed the Digital Spectrum Compatible system's unique interference rejection filter and powerful video compression technology.
/NOTE TO EDITORS: Technical backgrounder on bi-rate coding available from Zenith.
/CONTACT: John Taylor of Zenith, 708-391-8181; Bob Ford of AT&T Bell Labs, 201-564-4260; Mary Lou Ambrus of AT&T Microelectronics, 908-771-2825/
(ZE T) CO: Zenith Electronics Corp.; At&T Bell Labs ST: Illinois, New Jersey IN: CPR SU: SM -- NY084 -- 1873 11/06/91 16:23 EST