Patent ID: 6353700
Filing Date: 2002-03-05
Classification: G11B,H04N

Abstract:
A method for playing an MPEG data file in a reverse order, said method comprising:receiving said MPEG data file including at least a first group and a second group, each group comprising an I frame, a P frame and a plurality of B frames, wherein said first group is ahead of said second group in a normal order; decompressing said I frame in said second group using an MPEG decoder; buffering said decompressed I frame from said second group in a first frame buffer; decompressing said P frame in said second group, using said MPEG decoder, with reference to said decompressed I frame in said first frame buffer; buffering said decompressed P frame from said second group in a second frame buffer; decompressing said I frame from said first group as a transitive frame using said MPEG decoder without decompressing said B frames from said second group; and buffering said decompressed transitive frame in a third frame buffer.