Patent ID: 8774547
Filing Date: 2014-07-08
Classification: G06F,G06T,G09G,H04N

Abstract:
1. A contour correcting device comprising: a plurality of delay elements configured to delay an input video signal; a pixel-selection-control-signal generation circuit; a pixel selection circuit configured to select 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 configured to weight and add or subtract pixel data selected by the pixel selection circuit; and an adder circuit configured to add an operation result of the high-pass filter operation circuit to the input video signal, wherein 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.