发明名称 Electronic polling and calling communication system
摘要 In an electronic communication system, having a central transmitting station and N remote receiving stations, the central station sends out a signal train consisting of a wide reset or synchronizing pulse (R) and a series of N narrower time-sequenced or time-slotted clock pulses (C). An intermediate width station selector pulse (S) in the signal train designates a call to a particular remote station. The receiving stations are equipped to recognize, acknowledge and respond to the signal train in the correct fashion if in the calling mode or in the polling mode of operation.
申请公布号 US4088983(A) 申请公布日期 1978.05.09
申请号 US19750626233 申请日期 1975.10.28
申请人 ELAN INDUSTRIES, INC. 发明人 CRANDALL, KENNETH C.
分类号 G08B26/00;H04Q9/14;(IPC1-7):H04Q9/00 主分类号 G08B26/00
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