Patent ID: 6337880
Filing Date: 2002-01-08
Classification: G06T,G11B,H05K

Abstract:
A method for creating an index enabling random access to samples of temporal media data in a bitstream of compressed data, wherein the samples of the temporal media data have a temporal sample order different from a bitstream order, the method comprising:creating an entry in the index for each sample, wherein the entries in the index are ordered in the order of the compressed data for the samples in the bitstream, and wherein each entry has an entry position in the index; for each entry, storing a byte offset in the bitstream to compressed data for a sample, wherein the entry stores the byte offset for the sample having a position in the bitstream order that corresponds to the entry position of the entry; and for each entry, storing a temporal offset between a position of a sample in the temporal sample order and a position of the sample in the bitstream order, wherein the entry stores the temporal offset for the sample having a position in the temporal sample order that corresponds to the entry position of the entry.