Bandwidth extending system for color difference signals

Details Bandwidth extending system for color difference signals Bandwidth extending system for color difference signals

1990-06-22

1991-12-31

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358166, H04N 964, H04N 514, H04N 5208

Patent

active

050776037

ABSTRACT:
The response of color television are improved by adding a high frequency luminance component which is proportioned to the color-difference signal so as to provide color signals with correct transitions. A control function which minimizes the means square error of the luminance and color difference signals is used to weight the amplitude of the added luminance component. This control function becomes the ratio of the cross correlation of the luminance and color-difference signals to the autocorrelation of the luminance signal. In a television communications system, the control signal can be transmitted as a narrow band signal.

REFERENCES:
patent: 4030121 (1977-06-01), Faroudja
patent: 4316215 (1982-02-01), Yasumoto et al.
patent: 4337479 (1982-06-01), Tomimoto et al.
patent: 4400721 (1983-08-01), Macovski
patent: 4541014 (1985-10-01), Yagi
patent: 4980755 (1990-12-01), Ozaki

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