Adaptive device for separating a luminance signal and a color si

Details Adaptive device for separating a luminance signal and a color si Adaptive device for separating a luminance signal and a color si

1990-06-07

1993-09-28

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

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H04N 964

Patent

active

052490408

ABSTRACT:
An adaptive device for separating a luminance signal and a color signal includes a spatiotemporal filter extracting a color signal from a composite television signal, the filter having a vertical direction pass band, a horizontal direction pass band and a time direction pass band. A variation in the composite television signal in a vertical direction is detected. A vertical variation signal represents the detected variation in the composite television signal in the vertical direction. A variation in the composite television signal in a horizontal direction is detected. A horizontal variation signal represents the detected variation in the composite television signal in the horizontal direction. The vertical and horizontal variation signals control the mixing rate between the composite television signal and an output from a time direction filter. In cases where the vertical variation signal and the horizontal variation signal have appreciable values respectively, the time direction pass band of the spatiotemporal filter is varied in accordance with the values of the vertical variation signal and the horizontal variation signal.

REFERENCES:
patent: 4754322 (1988-06-01), Okuda et al.
patent: 4907073 (1990-03-01), Sugiyama
patent: 4979023 (1990-12-01), Tsinberg et al.
patent: 4982271 (1991-01-01), Sugiyama et al.

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