Communications: electrical – Condition responsive indicating system – With particular system function
Patent
1989-06-26
1990-11-27
Crosland, Donnie L.
Communications: electrical
Condition responsive indicating system
With particular system function
340505, 340508, 340512, 340518, 340533, G08B 2900
Patent
active
049739433
ABSTRACT:
A signal control system for transmission circuits which includes two ring counter type transmission circuits respectively formed of a plurality of transmitter-receivers located opposite to each other, a control circuit, and a couple of signal lines respectively formed of two alternate signal lines, a control signal line and a transmission line. The first pair formed of the first transmitter-receivers of the respective two transmission circuits are simultaneously operated, and subsequent pairs of the transmitter-receivers of the transmission circuits are synchronously operated in turn by a shift pulse. The system can transmit signals and control the transmission circuits without complicated circuits such as an address circuit and a verification circuit so that the construction is simplified and its power consumption is largely reduced.
REFERENCES:
patent: 3824545 (1974-07-01), Brenner et al.
patent: 3904829 (1975-09-01), Martin et al.
patent: 4241330 (1980-12-01), Hery et al.
patent: 4290055 (1981-09-01), Furney et al.
patent: 4542496 (1985-09-01), Takeyama et al.
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