Decoder for audio signals belonging to compressed and coded...

Details Decoder for audio signals belonging to compressed and coded... Decoder for audio signals belonging to compressed and coded...

H - Electricity

04

N

H04N 7/035 (2006.01) H04N 7/50 (2006.01) H04N 7/24 (2006.01) H04N 7/52 (2006.01)

Patent

CA 2166042

A decoder for audio signals belonging to audio-visual streams coded in accordance with standard ISO/IEC 11172 is provided. Said decoder comprises a presentation unit (UP) which is controlled by a first and a second clock signal, depending on the desired sampling rate, and is associated to means (SAV) managing audio-video synchronisation. The latter means start the presentation of output data by comparing a first timing signal (SCR), representative of a system clock signal, and a second timing signal (PTS), representative of a correct instant of data presentation, independently generate the two clock signals (CLK24, CLK22) and correct the signal corresponding to the desiredsampling rate by means of a feedback circuit which comprises a digital filter (FD).

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