Video signal contour corrector

Details Video signal contour corrector Video signal contour corrector

2006-02-21

2006-02-21

Lee, Michael H. (Department: 2614)

Television

Image signal processing circuitry specific to television

Transition or edge sharpeners

C348S627000, C382S266000

Reexamination Certificate

active

07002636

ABSTRACT:
A gray scale correction unit intended to provide a gray scale correction unit for preventing aliasing-like noise generation and gray-scale degradation of a gradation portion adaptively controls a correction value in accordance with the slope of a video signal, detects generation of aliasing-like noise, steepens an edge having a large amplitude without deterioration in the image quality, and improves a spatial frequency of the video signal.

REFERENCES:
patent: 5247361 (1993-09-01), Izawa et al.
patent: 5404180 (1995-04-01), Kitano et al.
patent: 5559563 (1996-09-01), Takahashi et al.
patent: 4-296171 (1992-10-01), None
patent: 5-014771 (1993-01-01), None
patent: 7-57009 (1995-06-01), None

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