Wide screen composite video signal encoder and standard aspect r

Details Wide screen composite video signal encoder and standard aspect r Wide screen composite video signal encoder and standard aspect r

1986-03-12

1987-11-24

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 12, 358 16, 358 19, H04N 1114

Patent

active

047092564

ABSTRACT:
A wide screen video signal is encoded for transmission as a composite signal having standard line and field rates and the standard frequency color burst. The signal includes chrominance components modulated on a color subcarrier frequency greater than the standard in proportion to the aspect ratio of the wide screen signal divided by the aspect ratio of the standard. A decoder converts the wide screen signal to a given broadcast standard without component separation or chroma demodulation by time expanding center samples of each active line of the wide screen signal.

REFERENCES:
patent: 3617626 (1971-11-01), Bluth et al.
patent: 3872498 (1975-03-01), Pritchard
patent: 4370672 (1983-01-01), Ross et al.
patent: 4476484 (1984-10-01), Haskell
patent: 4551754 (1985-11-01), Meise et al.
patent: 4651208 (1987-03-01), Rhodes et al.
Broder Wendland, Aspect Ratio Selection, SMPTE Journal, Oct. 1983, pp. 1034-1035.

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