Patent ID: 6058241
Filing Date: 2000-05-02
Classification: H04N

Abstract:
A playback method for reproducing from a recording medium in a reverse playback operation encoded data generated by time-compression using frame correlation over a plurality of frames, said encoded data containing plural groups of pictures, each group of pictures including intraframe and forward-predictive encoded data frames, said method comprising the steps of:reading said encoded data from said recording medium;decoding said encoded data;receiving decoded data into a frame memory bank which is divided into multiple frame memory sections, said decoding step including providing the number of the intraframe and forward-predictive encoded data frames in said each group of pictures and selectively decoding as many of the intraframe and forward-predictive encoded data frames from said each group of pictures as there are said frame memory sections such that each respective frame memory section stores one decoded data frame that corresponds to a respective intraframe or forward-predictive encoded data frame and such that in said each group of pictures the number of intraframe and forward-predictive encoded data frames that exceed the number of frame memory sections are not decoded; andreproducing said decoded data from said frame memory sections.