Patent ID: 7860481

Claim:
A radio-frequency (rf) control system for operating a component at least in part in response to an rf signal from a remote control device manipulable by a user, comprising: at least one rf receiver associated with the component and configured for processing an rf signal; and at least one controller associated with the component and controlling the receiver, wherein the controller adaptively adjusts a noise threshold above which a carrier must be detected to indicate the presence of a control signal, wherein a slow receiver signal strength indicator (RSSI) filter and a fast RSSI filter are connected between a RSSI output of the rf receiver and inputs of the controller, a time constant of the fast RSSI filter being less than a time constant of the slow RSSI filter, wherein the output of the fast RSSI filter is used by the controller to determine whether a carrier signal has been detected, wherein the output of the slow RSSI filter is connected to a comparator to provide a digital signal to the controller, and wherein the controller raises the noise threshold when the controller determines that a false carrier has been detected.