Chrominance transition corrector

Details Chrominance transition corrector Chrominance transition corrector

1994-12-19

1996-05-07

Groody, James J.

Television

Image signal processing circuitry specific to television

Transition or edge sharpeners

348631, H04N 964

Patent

active

055151124

ABSTRACT:
A chrominance transition corrector for restoring chrominance transitions after they have been degraded by a limited bandwidth channel converts input luminance and chrominance components, which represent a video image, from the time to the frequency domain. Correction coefficients are determined from a low frequency portion of the converted luminance component and the converted chrominance components. Corrected high frequency portions of the chrominance components are generated from the correction coefficients and a high frequency portion of the converted luminance component. The resulting converted and corrected high frequency portion of the chrominance components are then converted back to the time domain to produce chrominance output components, the chrominance transitions having been corrected.

REFERENCES:
patent: 4812905 (1989-03-01), Rossi

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