Apparatus for matching colors in image signals

Details Apparatus for matching colors in image signals Apparatus for matching colors in image signals

1994-12-14

1995-10-17

Groody, James J.

Television

Image signal processing circuitry specific to television

Chrominance signal amplitude control

348179, 348256, H04N 968, H04N 1702

Patent

active

054595304

ABSTRACT:
An inexpensive, yet robust color matcher is achieved by an apparatus which includes a compare device coupled to receive, as a first input, an input signal representing a combination of a luminance component Y and a chrominance component, and further coupled to receive as a second input, a threshold T, for comparing the input signal to the threshold T and outputting a color match signal if the input signal falls within a range defined by T and -T; and a threshold supply device coupled to the second input for supplying the threshold T, wherein the threshold T is a function of Y and at least two adjustable parameters.

REFERENCES:
patent: 5267026 (1993-11-01), Kawahara
patent: 5337083 (1994-08-01), Murata

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