How progressive scan conversion device and a progressive scan conversion

摘要

PPROBLEM TO BE SOLVED: To perform errorless interpolation even when video movement is not at an equal speed between continuous fields. PSOLUTION: An interpolation field signal is obtained from a connection point of two field delay circuits 12 and 13, and first and second motion vector detection circuits 22 and 23 respectively inter-field motion vectors from the interpolation field signal and signals before and after the interpolation signal by one field to extract a candidate vector group for interpolation signal generation. Further, a third motion vector detection circuit 24 detects an inter-frame motion vector from field signals before and after an interpolation field to extract a candidate vector group for interpolation signal generation. A determination circuit 25 determines whether an inter-field candidate vector that coincides with an inter-frame candidate vector exists. If there exist the coinciding vectors, an interpolation signal is generated on the basis of the coinciding vectors, and unless there are the coinciding vectors, an interpolation signal is generated with a vector selected from the inter-field candidate vector. PCOPYRIGHT: (C)2004,JPO&NCIPI