Patent ID: 7688386

Claim:
A de-interlacing apparatus comprising: a motion vector detecting section that detects a motion vector of an input video signal; a full-screen shift detecting section that detects a full-screen shift indicating a shift of a whole screen in a predetermined direction from the motion vector detected by the motion vector detecting section; a moving-or-still judging section that performs a moving-or-still judgment according to an amount of motion of the input video signal based on a difference value between a current field signal of the input video signal and a two-field delay signal obtained by delaying the current field signal by two fields; a moving judgment correcting section that corrects, when a full-screen shift is detected by the full-screen shift detecting section, a judgment result obtained by the moving-or-still judging section to lean toward a moving judgment; a first interpolation signal generating section that performs motion compensation for a one-field delay signal, which is obtained by delaying the current field signal by one field, using detection results obtained by the motion vector detecting section and the full-screen shift detecting section, and generates a first interpolation signal for interpolating the one-field delay signal; a second interpolation signal generating section that generates a second interpolation signal for interpolating the one-field delay signal from any one of the current field signal and the two-field delay signal; and an interpolation signal mixing section that mixes the first interpolation signal and the second interpolation signal depending on the judgment result obtained by the moving-or-still judging section and corrected by the moving judgment correcting section to generate a mixed interpolation signal.