Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1985-03-18
1987-03-17
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 22, 358180, 358 12, 358141, H04N 701
Patent
active
046512080
ABSTRACT:
A widescreen television picture is sampled at a higher sampling rate so as to fit all of the information in the current 52.5 .mu.s active video line time. A selection signal is also incorporated with the widescreen picture signal, allowing non-widescreen television receivers to display a contiguous portion of the widescreen picture without geometric distortion. The widescreen television signal is transmitted either in MAC or widescreen NTSC format, and is received by a decoder. The decoder allows the entire widescreen picture to be displayed on a widescreen receiver, and makes use of the selection signal to display the selected portion of the picture on a standard receiver without geometric distortion. In another embodiment, a decoder allows television signals having the standard aspect ratio to be displayed on receivers having widescreen aspect ratios without geometric distortion.
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Lowry John
Rhodes Charles
Groody James J.
Scientific - Atlanta, Inc.
Toth E. Anne
LandOfFree
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