| 摘要 |
PURPOSE:To reduce the power consumption at the waiting time by storing the control information necessary for waiting into the buffer register and at the same time cutting the power supply to other unnecessary parts. CONSTITUTION:When 1st rise detection circuit 31 detects the power make time point of the slave station to start power saving control circuit 35, power switch 37 is closed for a fixed time. The initial value is set to the output of rise detection circuit 39 at the area of the lowest rise where the power is saved. When the output of circuit 31 is recovered, switch 37 is opened to secure the waiting state. For buffer register 36, power saving control circuit 35 throws in power switch 37 with a fixed cycle even at the waiting time to read out the control information of the waiting time and then to alter the contents. In case the incoming call is given from the master station at the waiting time, control signal reception part 32 drives circuit 35 via the break of the idle line signal to close the power switch. When the talking is over along with completion of the recovery sequence for the wireless link, the idle line signal scanning part starts the scanning. |
