Patent ID: 7092032
Filing Date: 2006-08-15
Classification: G09G,H04N

Abstract:
1. A scanning conversion circuit for outputting a video signal with a scanning line doubled by interpolating a video signal of an interpolated scanning line from an input signal of an upper scanning line disposed adjacent above the interpolated scanning line and a lower scanning line disposed adjacently below the interpolated scanning line, the scanning conversion circuit comprising: a direction detecting section for detecting the best correlating direction out of (2n+1) directions, n being an integer of at least 1, including a vertical direction, a direction inclining leftward and a direction inclining rightward, centering around an interpolation point of said interpolated scanning line on the basis of the input video signals of a plurality of sampling points on the upper scanning line and the lower scanning line, the direction detection section comprising: an average value computing section for computing an average value of the video signals of two sampling points corresponding to the best correlating direction detected by said direction detecting section out of a plurality of the sampling points on the upper scanning line and the lower scanning line to thereby obtain the video signal of the interpolation point of the interpolated scanning line.