System for adaptively generating signal in alternate formats...

H - Electricity – 04 – N

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H04N 7/08 (2006.01) H04N 7/015 (2006.01) H04N 7/26 (2006.01) H04N 11/24 (2006.01)

Patent

CA 1304152

RCA 85,111 Abstract of the Disclosure A video signal generating system develops an encoded video signal representing less than all of the video information. Auxiliary signal generating circuitry develops a pair of auxiliary signals representing in part the remaining video information. A first of the pair of auxiliary signals includes relatively high fidelity signal but with limited bandwidth. The second auxiliary signal includes relatively low fidelity information but has an effective higher bandwidth. Depending upon the informative density of the auxiliary information, the first and second auxiliary signals are selected to produce an auxiliary output signal which is combined with the encoded video signal for transmission. A receiver responsive to the transmitted signal separates the video and auxiliary signals. The video and auxiliary signals are decoded and used to generate enhanced display images.

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