| 摘要 |
A time clock oscillator is continually operated to drive an MMI (Man-Machine Interface) unit. Although a TCXO provides a high-accuracy clock signal to accurately receive signals, the power consumption is large. Therefore, during receiving standby only a time clock oscillator is operated, and the TCXO is stopped. Then, timing prior to the reception of signals based on the time clock signal is obtained, and the TCXO is started. Although both the MMI unit and a timing processing unit are driven by the time clock signal before the TCXO is started, after the TCXO is started both a wireless processing unit and the timing process unit are started based on a master clock signal from the TCXO. Then, signals are received based on the master clock signal. |
