Widescreen television signal processing system with center and s

Details Widescreen television signal processing system with center and s Widescreen television signal processing system with center and s

1989-06-14

1990-08-14

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 16, H04N 1114

Patent

active

049491679

ABSTRACT:
An NTSC compatible widescreen EDTV system encodes and decodes a television signal comprising (1) a main, standard format NTSC signal with auxiliary low frequency side panel image information compressed into an overscan region thereof; (2) auxiliary high frequency side panel image information; and (3) auxiliary high frequency horizontal luminance information. At an encoder, components 2 and 3 are intraframe averaged before modulating an alternate subcarrier. Component 1 is intraframe averaged exclusive of the compressed side panel information before being combined with the modulated alternate subcarrier.

REFERENCES:
patent: 4287528 (1981-09-01), Levy
patent: 4701783 (1987-10-01), Glenn
M. A. Isnardi, et al., "Encoding for Compatibility and Recoverability in the the ACTV System", IEEE Transactions on Broadcasting, vol. BC-33, No. 4, Dec. 1987, pp. 116-123.

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