Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
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.
General Electric Company
Herrmann Eric P.
Kurdyla Ronald H.
Parker Michael D.
Shepperd John W.
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