Patent ID: 7274760

Claim:
A signal processing system comprises: a system input for receiving an input signal having an in-band component and an out-band component; a system output for providing a system output signal; a plurality of signal processing circuits each having an input coupled to the system input and an output for providing a respective output signal, each one of the signal processing circuits being adapted for optimal processing of input signals over a different range of in-band component to out-band component ratios; a plurality of switches each having a switch input coupled to the output of a respective one of the signal processing circuits, a switch output connected to the system output, and a switch control input responsive to a first switch control signal for connecting the switch input to the switch output and responsive to a second switch control signal for disconnecting the switch input from the switch output; and a signal strength detector having at least one input each coupled to the output of a preselected one of the signal processing circuits and a plurality of outputs each coupled to the switch control input of a respective one of the plurality of switches, the signal strength detector being responsive to a comparison of the strength of the output signal of each preselected one of the signal processing circuits with at least one limit for selecting a particular one of the signal processing circuits and for providing a first switch control signal to the switch control input of the switch having the switch input of said switch coupled to the output of the particular one of the signal processing circuit, the signal strength detector providing the second switch control signal to the switch control input of each one of the switches having the switch input of said switch coupled to the output of a respective one of the signal processing circuits not selected by the signal strength detector.