Method and system for cross-luminance reduction in...

Details Method and system for cross-luminance reduction in... Method and system for cross-luminance reduction in...

2005-03-22

2008-12-30

Hsia, Sherrie (Department: 2622)

Television

Image signal processing circuitry specific to television

Transition or edge sharpeners

C348S665000, C348S667000

Reexamination Certificate

active

07471342

ABSTRACT:
A method and system for correcting luma data and chroma data from a composite signal for a plurality of lines are disclosed. The method and system include correlating line data of the composite signal from a portion of the plurality of lines to provide a plurality of correlation signals. The method and system also include generating a chroma suppression signal based on the plurality of correlation signals. The chroma suppression signal indicates whether to suppress a portion of the chroma data. The chroma suppression signal indicates that the portion of the chroma data should be suppressed when a large luma transition and the chroma data being beneath a threshold are detected.

REFERENCES:
patent: 5099315 (1992-03-01), Koga et al.
patent: 5640211 (1997-06-01), Kawano et al.
patent: 5909255 (1999-06-01), Hatano

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