Patent ID: 7684530

Claim:
A circuit system for synchronized transmission of an audio data stream in a bus system, comprising: (a) at least one data source configured to provide audio data packets to be transmitted and frequency data packets to be transmitted which are associated with the audio data packets to be transmitted, said at least one data source including: (i) a first clock or timer unit, the first clock or timer unit configured to update a first synchronization cycle or time cycle in the circuit system, and (ii) at least one generator unit connected to the first clock or timer unit and configured to receive at least one data frequency, for each of the associated frequency data packets, said at least one data source configured to: (a) read a counter status of the first clock or timer unit according to the data frequency, (b) add a predetermined value to the counter status of the first clock or timer unit and enter the value into the frequency data packet, and (c) send the frequency data packet after a predetermined number of values have been entered into the frequency data packet; and (b) at least one data sink connected to the data source via at least one data channel and configured to receive the audio data packets to be transmitted and the associated frequency data packets, without a PLL system, said at least one data sink including: (i) a second clock or timer unit, the second clock or timer unit configured to update a second synchronization cycle or time cycle, (ii) at least one audio data buffer unit configured to store a counter status of received audio data packets, (iii) at least one data frequency buffer unit configured to store the counter status values in received frequency data packets, (iv) at least one comparator unit connected to the second clock or timer unit, and connected to the data frequency buffer unit, said comparator unit configured to compare a counter status of the second clock or timer unit to a counter status of the data frequency buffer unit, and configured to send at least one data frequency pulse, and (v) at least one output unit connected to the audio data buffer unit and to the comparator unit and configured to output an audio data pulse read from the audio data buffer unit together with the data frequency pulse transmitted from the comparator unit and associated with the audio data pulse.