-
公开(公告)号:US4179624A
公开(公告)日:1979-12-18
申请号:US840369
申请日:1977-10-07
IPC分类号: H04B3/54 , G01R21/00 , G08C15/00 , G08C15/06 , G08C19/00 , G08C19/06 , H02J13/00 , H04J3/00 , H04J3/24 , G08C19/24
CPC分类号: H02J13/0031 , G01R21/00 , Y02E60/7892 , Y04S40/146
摘要: A carrier control method using phase-pulse signals in which a plurality of terminal-selection channels and a plurality of returning channels having a predetermined phase width respectively are provided in one cycle of an alternating current carrier wave. At the center, a terminal-selection phase-pulse signal comprising a combination of existence and non-existence of a phase pulse for each terminal-selection channel is injected in the terminal-selection channels, corresponding to a code assigned to each terminal equipment. At the terminal equipment, the terminal-selection phase-pulse signal is received. When the code of the signal coincides with the code of the terminal equipment, a returning phase-pulse signal comprising a combination of existence and non-existence of a phase pulse for each returning channel is injected in the returning channels, corresponding to a datum stored at the terminal in the electrically readable state, and the signal is received at the center.
摘要翻译: 使用相位脉冲信号的载波控制方法,其中在交流载波的一个周期中分别提供多个终端选择信道和具有预定相位宽度的多个返回信道。 在中心,对应于分配给每个终端设备的代码,在终端选择信道中注入包括每个终端选择信道的相位脉冲的存在和不存在的组合的终端选择相位脉冲信号。 终端设备接收终端选择相位脉冲信号。 当信号码与终端设备的代码一致时,包括每个返回信道的相位脉冲的存在和不存在的组合的返回相位脉冲信号被注入返回信道中,对应于存储的数据 在电可读状态的终端处,并且信号在中心被接收。