Technique for transmitting digital data together with a video si

Details Technique for transmitting digital data together with a video si Technique for transmitting digital data together with a video si

1979-08-08

1980-12-02

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 708

Patent

active

042374847

ABSTRACT:
Supplementary digital data is encoded together with a video signal by predicting the intensity values of a first set of video samples, compressing the range of the prediction errors and superimposing a value indicative of the supplementary data on the compressed value. The samples in the first set may be selected in a regular sequence or asynchronously in accordance with a function of the video signal such as the slope in the area of the picture being processed; the composite values are time multiplexed with the remaining intensity values.

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patent: 3769451 (1973-10-01), Connor
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patent: 3924060 (1975-12-01), Bedford
patent: 3940555 (1976-02-01), Amano et al.
patent: 3984624 (1976-10-01), Waggener

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