Patent ID: 6108584
Filing Date: 2000-08-22
Classification: H04S

Abstract:
A multichannel digital audio decoding method comprising the steps of:sequentially receiving, from an audio program bitstream, a first stream of digital audio data representing an audio frame of at least one coded audio channel, andsequentially parsing the data from the first stream, with an integrated circuit processor, into a plurality of more than two sequential segments and sequentially storing each of the segments in a first portion of each of a corresponding plurality of subblocks in a block of buffer memory external to the processor; thenreceiving, from the audio program bitstream, a stream of digital format data relating to the structure of data of one or more additional channels of the audio frame, anddecoding the digital format data with the processor; thensequentially receiving, from the audio program bitstream, a second stream of digital audio data representing data of the one or more additional channels of the audio frame, andin accordance with information from digital format data, sequentially parsing the data from the second stream, with the integrated circuit processor, into the plurality of more than two sequential segments and sequentially storing each of the segments of the parsed data from the second stream in a second portion, contiguous with the first portion, of each of the plurality of subblocks in the block of buffer memory;after data from the second stream has been stored in the buffer memory, sequentially reading subblocks of the stored parsed data from the buffer memory, subblock by subblock, to produce a plurality of output signals containing information for reproducing audio for a plurality of decoded audio channels from data received from the first and second streams of the audio frame.