Patent ID: 7395043

Claim:
A data receiver comprising: a frequency converter for receiving a radio signal and for generating an RSSI (Received Signal Strength Indication) signal indicating a received signal strength indication level of the signal received, and converting the received signal to a base-band signal; a first converter for digitizing the base-band signal to produce first data; a second converter for digitizing the RSSI signal to produce second data; a first monitor for demodulating the first data, and for detecting error of demodulated data to determine quality of a threshold value for the RSSI signal; a second monitor for comparing a power level of the second data with the threshold value for the RSSI signal; and an output control circuit for supplying an enable signal to said frequency converter, said first and second converters, and said first and second monitors to control said frequency converter, said first and second converters, and said first and second monitors, and further providing the threshold value for the RSSI signal; said output control circuit including a threshold value generator for generating the threshold value for the RSSI signal corresponding to the quality of the threshold value determined.