CIRCUIT ARRANGEMENT AND METHOD FOR SYNCHRONISED TRANSMISSION OF AUDIO DATA STREAMS IN A BUS SYSTEM

WIPO Patent Application WO2003024008

A3

The invention relates to a circuit arrangement (100) and to a method for synchronised transmission of audio data streams in a bus system, wherein the sample data frequency of the data source can be recovered without the arrangement of a PLL circuit. According to the invention, a data source (10) provides audio data packets (AD) which are to be transmitted and frequency data packets which are to be transmitted and which are respectively associated with audio data packets (AD) in order to enter a counter position into the frequency data packet (FS); at least one frequency data butter unit (46) is provided in addition to least one comparator unit (48) in order to deliver at least one data frequency pulse (fs), and an output unit (50) is provided in order to output the audio data pulse (ad) which is read from the audio data buffer unit (44) together with the data frequency pulse (fs) which is associated with the audio data pulse (ad) and which is outputted by the comparator unit (48).

BAIERL WOLFGANG (DE)

PCT/DE2002/000184

October 09, 2003

January 22, 2002

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BOSCH GMBH ROBERT (DE)
BAIERL WOLFGANG (DE)

H04L12/28; H04L7/00; H04L12/433; (IPC1-7): H04J3/06; H04N7/24

WO1999059047A2	1999-11-18
WO1995022233A1	1995-08-17
WO2003003630A1	2003-01-09

EP0838926A2	1998-04-29
EP0695063A2	1996-01-31

NOAH M ET AL: "DSP FOR A FRAME RELAY VOICE, DATA, FAX MULTIPLEXER", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING APPLICATIONS AND TECHNOLOGY, XX, XX, vol. 1, October 1994 (1994-10-01), pages 249 - 252, XP000669768

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