False contour reduction device, display device, false...

Details False contour reduction device, display device, false... False contour reduction device, display device, false...

2011-08-02

2011-08-02

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

Reexamination Certificate

active

07990343

ABSTRACT:
A false contour reduction device reduces the occurrence of false contours on a display screen. The false contour reduction device includes a false contour occurrence pixel detection circuit, a specific color pixel detection circuit, and a false contour reduction processing circuit. The false contour occurrence pixel detection circuit detect at which pixels false contours will occur among the pixels in an image based on the input image signal. The detected pixels are false-contour-occurring pixels. The specific color pixel detection circuit detects pixels which have a specific color within a specific color range, among the false-contour-occurring pixels. The detected pixels are specific color false-contour-occurring pixels. The false contour reduction processing circuit performs a false contour reducing process on the specific color false-contour-occurring pixels.

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Hiraki Uchiike, et al., “All About Plasma Display”, Kabushiki Kaisha Kogyo Chosakai, May 1, 1997, pp. 164-165.

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