VIDEO SIGNAL PROCESSING APPARATUS, VIDEO SIGNAL PROCESSING METHOD AND VIDEO DISPLAY APPARATUS

A video signal processing apparatus, for achieving high resolution, with using a small number of frames, as an input videos signal, comprises: an input unit, into which a video frame is inputted; and a resolution converter unit for obtaining an output video frame by increasing a number of pixels building up the input video frame, wherein the resolution converter unit has a same-brightness direction estimation unit, which is configured to produce a sampling phase difference for each video data, by estimating a same-brightness direction for each video data on the input video frame, and the resolution converter unit conducts a high resolution process of video with using the sampling phase difference, which is produced by the same-brightness direction estimation unit.