公开(公告)号：US5142563A

公开(公告)日：1992-08-25

申请号：US614281

申请日：1990-11-09

申请人： Chikashi Nyuu ,  Kiyoshi Hyakutake ,  Tetsuo Yamashita

发明人： Chikashi Nyuu ,  Kiyoshi Hyakutake ,  Tetsuo Yamashita

IPC分类号： H04M1/00 ,  H02J7/00 ,  H04B7/26

CPC分类号： H02J7/0047

摘要： A cordless telephone includes a portable telephone and a base station. The portable telephone includes a voltage drop detecting circuit for detecting that a battery for supplying power to the circuit within the portable telephone is dropped in voltage to a predetermined value or less, and a control unit for controlling a transmission unit so that it transmits a voltage drop signal in accordance with an output from the voltage drop detecting circuit. When the voltage drop detecting circut detects the voltage-dropped state of the battery, a signal indicative of such state is sent to the base station.

摘要翻译： 无绳电话包括便携式电话和基站。 该便携式电话机包括一个电压降检测电路，用于检测用于向便携式电话机内的电路供电的电池电压降到预定值以下;以及控制单元，用于控制发送单元以使其发送电压 根据来自电压降检测电路的输出信号。 当电压降检测环路检测到电池的电压下降状态时，向基站发送表示这种状态的信号。