Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1980-03-17
1982-06-01
Chin, Tommy P.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 31, H04N 9535
Patent
active
043331041
ABSTRACT:
Color demodulating apparatus for a color television receiver. The chrominance signal is separated from other components of the composite video signal and sampled at the color subcarrier frequency to produce charges representative of the synchronously detected chrominance signal. The charges are applied to two CCD delay lines which introduce a delay differential at their outputs equal to the horizontal line period of the television receiver. The outputs of the CCD delay lines are combined in a summing network. Due to the interleaving principle present with standard NTSC signals the demodulated chrominance signals add and any unwanted high frequency luminance components cancel. The output of the summing network is lowpass filtered to produce a continuous color video signal which is free of cross-color effects.
REFERENCES:
patent: 3553354 (1971-01-01), Gupta
patent: 3688019 (1972-08-01), Weitzsch
patent: 3707596 (1972-12-01), Kuhn
patent: 4096516 (1978-06-01), Pritchard
patent: 4158209 (1979-06-01), Levine
Chin Tommy P.
GTE Laboratories Incorporated
Keay David M.
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