45-Mbps multichannel TV coding system

Shuichi Matsumoto; Takahiro Hamada; Masahiro Saito; Hitomi Murakami

doi:10.1117/12.50268

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1 November 1991 45-Mbps multichannel TV coding system

Shuichi Matsumoto, Takahiro Hamada, Masahiro Saito, Hitomi Murakami

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Proceedings Volume 1605, Visual Communications and Image Processing '91: Visual Communication; (1991) https://doi.org/10.1117/12.50268
Event: Visual Communications, '91, 1991, Boston, MA, United States

Abstract

A new digital coding system is presented, which makes it possible to transmit up to 4 NTSC TV programs simultaneously over a single DS3 45Mbps link including two high quality sound channels and one 64 kbps ancillary data channel. The principal bit-reduction technology employed is 2 dimensional intraframe WHT (Walsh Hadamard Transform) coding with an advanced adaptive quantization reflecting human visual perception. The hardware has been made compact like a home use VTR.

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Shuichi Matsumoto, Takahiro Hamada, Masahiro Saito, and Hitomi Murakami "45-Mbps multichannel TV coding system", Proc. SPIE 1605, Visual Communications and Image Processing '91: Visual Communication, (1 November 1991); https://doi.org/10.1117/12.50268

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