Importance

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Abstract

The system comprises a master device (10) and at least one slave device (20). Each device has wireless transceiver and interface means (12, 22), a digital signal processor (14, 24), and a clock (16, 26). The master device transmits signals at a rate defined by its clock (16). The slave device has means for determining the frequency offset between the clocks and for correcting accordingly the rate at which signals are delivered internally to its processor. At the slave end, the frequency of the external clock(s) (26) is controllable about its nominal value, and means are provided for extracting a frequency offset value from a register (50) and for responding thereto by adjusting the frequency of the second clock in the direction tending to minimize the offset. The processor (24) of the slave device is thus enabled to operate synchronously with the clocking of signals delivered over the wireless connection, as played back by the interface circuit after the clock rate of the signals has been corrected internally.

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First Claim