Patent ID: 8711718

Claim:
An apparatus used in a communication system having a plurality of time slots, comprising: a signal processing circuit, for receiving an input signal; a controlling circuit, coupled to the signal processing circuit, for controlling the signal processing circuit according to a detection result; and a signal detector, coupled to the signal processing circuit and the controlling circuit, for detecting the input signal to generate the detection result; wherein the detection result is generated based on the input signal; the signal detector is arranged to detect a received signal indicator; when the received signal indicator is smaller than a predetermined threshold value, the controlling circuit determines that the detection result does not meet a predetermined criterion; and when the detection result does not meet the predetermined criterion, the controlling circuit is arranged to adjust the signal processing circuit for reducing power consumption of the signal processing circuit according to the detection result, and the controlling circuit is arranged to de-activate at least one signal processing function of the signal processing circuit.