| 摘要 |
PROBLEM TO BE SOLVED: To reduce power consumption by prohibiting, for a fixed time, a reception signal processing unit from being re-activated, even if a signal of the same frequency band as a communication frequency of a present station is received, in a case where the signal is not a desired signal. SOLUTION: The receiver is provided with: an activation circuit 115 which detects a high-frequency signal and outputs an activation signal 113 when the detected high-frequency signal is equal to or higher than a fixed level; and a reception signal processing unit 114 which starts a demodulating operation of the high-frequency signal upon receipt of the activation signal 113. The reception signal processing unit 114 includes: a demodulation circuit 110 which restores a demodulation signal from the high-frequency signal; and a re-activation prohibition control section 130 which determines whether the demodulation signal is a desired signal or not, outputs a reactivation prohibition signal 141 to the activation circuit 115 in a case where the demodulation signal is not the desired signal, and prohibits the activation circuit 115 from outputting the activation signal 113 for a fixed time. COPYRIGHT: (C)2010,JPO&INPIT |
