Video signal compander adaptively responsive to predictions of t

Details Video signal compander adaptively responsive to predictions of t Video signal compander adaptively responsive to predictions of t

1989-10-03

1991-04-02

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 12, 358135, 358117, H04N 552, H04N 712

Patent

active

050050826

ABSTRACT:
A video signal transmission system includes adaptive compansion circuitry to improve the signal-to-noise ratio of transmitted signals. A compandor at the transmitter, and corresponding inverse compandor at the receiver, are arranged to have a plurality of selectable compansion transfer characteristics. Selection of particular ones of the transfer characteristics is responsive to, e.g., predicted values of current signal.

REFERENCES:
patent: 4355304 (1982-10-01), Kasuga et al.
patent: 4516167 (1985-05-01), Dion et al.
patent: 4518994 (1985-05-01), Schnitzler
patent: 4575749 (1986-03-01), Acampora et al.
patent: 4851904 (1989-07-01), Miyazaki et al.
A. A. Acampora et al, "Noise Reduction in Video Signals Using Pre/Post Signal Processing in a Time Division Multiplexed Component System", RCA Review, vol. 47, Sep. '86, pp. 303-344.
"Sound Transmission for HDTV Using Baseband Multiplexing into MUSE Video Signal", IEEE Trans. on Broadcasting, vol. BC-33, No. 4. Dec. '87.

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