Patent ID: 7164704

Claim:
A communication circuit, comprising: a signal processing circuit arranged to produce a first plurality of data signals and receive a second plurality of data signals, the first plurality of data signals including an identification signal that identifies one of the communication circuit and the remote transmitter; a timing circuit coupled to receive an initial value corresponding to a predetermined time, the timing circuit arranged to produce a first control signal in response to receiving the identification signal within the predetermined time and arranged to produce a second control signal in response to not receiving the identification signal within the predetermined time; a transmit circuit coupled to receive the first plurality of data signals, the transmit circuit arranged to transmit each data signal of the first plurality of data signals on a respective transmit frequency in a predetermined sequence of transmit frequencies; and a receive circuit coupled to receive each data signal of the second plurality of data signals from a remote transmitter on the respective transmit frequency in the predetermined sequence, the receive circuit applying the second plurality of data signals to the signal processing circuit.