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Proceedings Paper

Compatible NTSC system with cross-talk-free multiplexing of luminance and chrominance
Author(s): Stephane Coulombe; Eric Dubois
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Paper Abstract

In this article, we present a new NTSC system based on multidimensional crosstalk-free transmultiplexer theory. The system is truly crosstalk-free and is compatible with existing television sets. The new encoded NTSC composite signal can be demodulated with slight degradation by a conventional television receiver, with some improvements by a comb-filter-equipped television and with best performance with the new decoder. We sue new sampling structures for luminance and chrominance signals in order to obtain near- perfect-reconstruction. The detailed structure of the proposed crosstalk-free NTSC system is presented. The NTSC encoder is composed of a decimation stage followed by a near-perfect-reconstruction transmultiplexer encoder. The NTSC encoder is composed of a decimation stage followed by a near-perfect-reconstruction transmultiplexer encoder. The NTSC decoder is composed of the transmultiplexer's decoder followed by an interpolation stage. We show structures of multidimensional two-channel FIR filter banks which allow near-perfect-reconstruction. Such structures lead to exactly zero crosstalk between luminance and chrominance signals. Special attention is given to the design of the filters in the system since they need to maintain compatibility with existing receivers. A design example and comparison with existing NTSC systems are presented.

Paper Details

Date Published: 10 January 1997
PDF: 12 pages
Proc. SPIE 3024, Visual Communications and Image Processing '97, (10 January 1997); doi: 10.1117/12.263198
Show Author Affiliations
Stephane Coulombe, INRS-Telecommunications/Univ. du Quebec (Canada)
Eric Dubois, INRS-Telecommunications/Univ. du Quebec (Canada)


Published in SPIE Proceedings Vol. 3024:
Visual Communications and Image Processing '97
Jan Biemond; Edward J. Delp, Editor(s)

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