Television – Image signal processing circuitry specific to television – Hue control
Reexamination Certificate
2007-03-20
2007-03-20
Hsia, Sherrie (Department: 2622)
Television
Image signal processing circuitry specific to television
Hue control
C348S645000, C348S631000, C348S703000
Reexamination Certificate
active
10847205
ABSTRACT:
A method of color saturation compensation in a video signal is disclosed. The method includes the steps of: processing a luminance signal component of the video signal; determining whether the processing of the luminance signal results in a change in chrominance saturation; if the step of determining reveals that the chrominance saturation has changed, applying a chrominance compensation signal to the chrominance signals to counteract the effects of chrominance saturation, wherein the step of applying a compensation signal include the steps of: generating a compensation signal which is dependent on hue and luminance ratio (output luminance signal/input luminance signal). Apparatus for performing the method is also disclosed.
REFERENCES:
patent: 4679072 (1987-07-01), Takayama
patent: 6026179 (2000-02-01), Brett
patent: 6163346 (2000-12-01), Tsyrganovich
Chiang Patricia Wei Yin
Goh Kwong Huang
Huang Yong
Hui Lucas Y. W.
Hsia Sherrie
Iannucci Robert
Jorgenson Lisa K.
Seed IP Law Group PLLC
STMicroelectronics Asia Pacific Pte. Ltd.
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