Patent ID: 6370315
Filing Date: 2002-04-09
Classification: G11B

Abstract:
A playback time expansion method for lengthening a playback time of digitized video, comprising:a step for measuring a rate of video change for all frames in the digitized video, said rate of video change indicating how much video in a particular frame has changed compared with video in a frame before and a frame after; a step for recording said video; a step for calculating a number of manipulation frames based on a playback time before said video playback time expansion and a playback time after said video playback time expansion, said number of manipulation frames indicating a number of frames to be manipulated in the total number of frames in said video; a step for selecting a number of frames equal to said number of manipulation frames from among all frames in said video in sequence from the lowest rate of video change; and a step for outputting recorded video; wherein said step for outputting recorded video is characterized by manipulating said selected frames such that the video of each selected frame is output a plurality of times.