Communications: electrical – Continuously variable indicating – With particular receiver
Patent
1986-10-01
1989-01-10
Caldwell, Sr., John W.
Communications: electrical
Continuously variable indicating
With particular receiver
34087016, 34087039, 340310R, G08C 1500
Patent
active
047976691
ABSTRACT:
A receiver for receiving a reception signal defining a measured value is connected to a two-wire transmission line used for transmitting a digital command signal from a communicator, a digital measured value signal from a transmitter, and a response signal responding to the command signal. The receiver includes a timer for discriminating that a nonsignalling state of the two-wire transmission line has continued for a predetermined period, and a CPU for validating a specific period of a reception signal received after the discrimination operation of the timer.
REFERENCES:
patent: 4466074 (1984-08-01), Jindrick et al.
patent: 4520488 (1985-05-01), Houvig et al.
patent: 4623871 (1986-11-01), Akano
McGowan, III David L.
Olsen Arthur M.
Oxenberg Steven M.
Caldwell Sr. John W.
Halista Mitchell J.
Honeywell Inc.
Medved Albin
Queen Tyrone
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