Video signal decoding apparatus for use with varying helper sign

Details Video signal decoding apparatus for use with varying helper sign Video signal decoding apparatus for use with varying helper sign

1995-08-03

1997-11-04

Kostak, Victor P.

Television

Bandwidth reduction system

Format type

348474, H04N 1120

Patent

active

056845405

ABSTRACT:
A video signal is reproduced by adjusting the amplitude of a horizontal high frequency signal, a vertical high frequency signal and a vertical temporal high frequency signal. Helper signals can be demodulated even if the helper signal levels vary due to receiving conditions. The number of circuits can be reduced by using a common circuit for amplitude adjustment of the helper signal and for automatic color control of a chrominance signal.

REFERENCES:
patent: 4855824 (1989-08-01), Fuhrer
patent: 5216505 (1993-06-01), Kageyama et al.
patent: 5225907 (1993-07-01), Casavant et al.
patent: 5384599 (1995-01-01), Casavant et al.

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