Title :
Compatible HDTV coding for broadband ISDN
Author :
Tzou, Kou-Hu ; Chen, Ting-Chung ; Fleischer, Paul E. ; Liou, Ming L.
Author_Institution :
Bell Commun. Res., Red Bank, NJ, USA
fDate :
28 Nov-1 Dec 1988
Abstract :
A compatible digital HDTV (high-definition television) coding scheme is proposed for broadband ISDN (integrated services digital network) applications. This scheme is capable of compressing HDTV for transmission at the H4 access rate of roughly 135 Mb/s with an embedded signal for delivering EQTV (extended quality TV) over a subchannel of 45 Mb/s. Two major processing components are introduced in this system to facilitate compatible coding; one is decimation in the frequency domain and the other is progressive coding. The decimation, performed in the DCT (discrete cosine transform) domain, results in a low pass filtered and decimated version of HDTV. The progressive coding squeezes the decimated signal into the 45 Mb/s subchannel and properly refines it for 135 MB/s HDTV coding. Simulation results show that high quality HDTV can be achieved at 135 Mb/s and that the quality of the embedded 45 Mb/s signal is also very good
Keywords :
ISDN; broadband networks; encoding; high definition television; video signals; 135 Mbit/s; 45 Mbit/s; EQTV; H4 access rate; compatible HDTV coding; decimation; digital HDTV; discrete cosine transform; extended quality TV; frequency domain; high quality HDTV; low pass filtering; progressive coding; subchannel; B-ISDN; Bit rate; Discrete cosine transforms; Frequency domain analysis; HDTV; Optical fibers; Signal design; Spatial resolution; Standards development; TV;
Conference_Titel :
Global Telecommunications Conference, 1988, and Exhibition. 'Communications for the Information Age.' Conference Record, GLOBECOM '88., IEEE
Conference_Location :
Hollywood, FL
DOI :
10.1109/GLOCOM.1988.25938
