Noise reduction apparatus for a widescreen video signal processi

Details Noise reduction apparatus for a widescreen video signal processi Noise reduction apparatus for a widescreen video signal processi

1989-09-07

1990-08-07

Shepperd, John W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 12, H04N 704

Patent

active

049472500

ABSTRACT:
In a system for processing a widescreen television signal containing center and side panel components, low frequency side panel information is time compressed before being disposed in a horizontal image overscan region. The compressed side panel low frequency information is frequency modulated onto an FM subcarrier to improve the noise characteristics of the compressed side panel information when transmitted over a noisy channel.

REFERENCES:
patent: 4816899 (1989-05-01), Strolle et al.
patent: 4853766 (1989-08-01), Isnardi et al.
patent: 4855824 (1989-08-01), Fuhrer
patent: 4882614 (1989-11-01), Kageyama et al.
"Reliable EDTV/HDTV Transmission in Low-Quality Analog Channels"; by Schrieber et al; SMPTE Journal; Jul. 1989, pp. 496-503.
Philips Laboratories, "Decomposition and Recombination of a Wide Aspect Ratio Image for ENTSC Two-Channel Television"; by Cavallerno; IEEE Transactions on Consumer Electronics; Aug. 1987.

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