Apparatus for pre-conditioning auxiliary television signal...

Details Apparatus for pre-conditioning auxiliary television signal... Apparatus for pre-conditioning auxiliary television signal...

H - Electricity

04

N

350/36

H04N 11/00 (2006.01) G06T 9/00 (2006.01) H04N 11/24 (2006.01)

Patent

CA 1309161

Abstract of the Disclosure An NTSC compatible, single channel 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 above a given frequency before being combined with the modulated alternate subcarrier.

576850

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