Panasonic Corporation

Nobuko Fujita

Satoru Tanigawa

Shinichi Tomioka

A contour correcting device which includes a plurality of delay elements which delay an input video signal, a pixel-selection-control-signal generation circuit, a pixel selection circuit which selects outputs of the plurality of delay elements in response to outputs of the pixel-selection-control-signal generation circuit, a high-pass filter operation circuit and an adder circuit which adds an operation result of the high-pass filter operation circuit to the input video signal. When the pixel selection circuit extracts a contour component in a boundary portion between a horizontal video effective period and a period other than the horizontal video effective period of the input video signal, the pixel selection circuit replaces pixel data in the period other than the horizontal video effective period among pixel data input to the high-pass filter operation circuit, with pixel data at an edge-point of the horizontal video effective period.

Contour correcting device, contour correcting method and video display device

Color correction according to the present disclosure performs correction by adding a predetermined correction value to an input value of a component to be corrected, which is one of a plurality of components for representing a color with a predetermined color space, and outputs a corrected value. The color correction includes calculating an unadjusted correction value based on the input value; and adjusting the unadjusted correction value calculated in the calculating the unadjusted correction value so that the corrected value does not decrease with an increase in the input value, and outputting the adjusted value as the predetermined correction value.

Growing community of inventors

Osaka, Japan

Nobuko Fujita