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热词
    • 3. 发明授权
    • Method and system for extending backup battery life in primary line customer premises-equipment
    • 在一线客户住宅设备中延长电池寿命的方法和系统
    • US07233660B2
    • 2007-06-19
    • US10430860
    • 2003-05-05
    • Kenneth Wayne EverettBruce McClelland
    • Kenneth Wayne EverettBruce McClelland
    • H04M1/00
    • H04W52/0296H04M19/08Y02D70/23
    • Current to a relay causes a telephone to be connected to a SLIC. Following LOOP, a sleep switch opens to interrupt current to the power supply converter after a first predetermined period expires. If the telephone is on-hook, loss of current to the relay causes disconnection from the SLIC, but causes connection to a battery.Current sensed from the battery through an off-hook hook switch generates a current signal. The current signal closes a current switch, which is in parallel with the open sleep switch, thereby providing a current path to the converter. The sleep switch then makes and then the current switch breaks.After awakening, a ring-back signal informs a user that telephony service has been restored and a message may indicate that telephony service is being sought. When the telephone is placed back on-hook, counting of a second predetermined period starts, after which the sleep switch opens again.
    • 到继电器的电流使电话连接到SLIC。 在LOOP之后,在第一预定时段到期之后,休眠开关打开以中断到电源转换器的电流。 如果电话挂机,则继电器的电流损失会导致与SLIC断开连接,而导致连接电池。 从电池通过摘机钩开关感测的电流产生电流信号。 电流信号关闭与开启的睡眠开关并联的电流开关,从而为转换器提供电流路径。 然后休眠开关,然后当前开关断开。 唤醒后,回铃信号通知用户电话服务已被恢复,并且消息可以指示正在寻求电话服务。 当电话放回挂机时,开始计数第二预定时间,之后再次打开睡眠开关。