Method and system for cross-luminance reduction in multi-standard television decoders
AssigneeBroadcom Corporation
InventorsAleksandr M. Movshovich, Brad A. Delanghe, Darren Neuman
Life of this patent
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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.
Claims16
A method for correcting luma data and chroma data from a composite signal for a plurality of lines, the method comprising the steps of:
- (a) correlating line data of the composite signal from a portion of the plurality of lines to provide a plurality of correlation signals;
- (b) generating a chroma suppression signal based on the plurality of correlation signals, the chroma suppression signal for indicating whether to suppress a portion of the chroma data, the chroma suppression signal indicating 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.
A system for correcting luma data and chroma data from a composite signal for a plurality of lines, the system comprising:
- at least one correlator for correlating line data of the composite signal for a plurality of lines to provide a plurality of correlation signals;
- a decoder, coupled to the at least one correlator, for generating a chroma suppression signal based on the plurality of correlation signals, the chroma suppression signal for indicating whether to suppress a portion of the chroma data, the chroma suppression signal indicating 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.
Dependencies are inferred from the claim text.