System for transmitting operating condition data from a passive

Details System for transmitting operating condition data from a passive System for transmitting operating condition data from a passive

1975-02-03

1977-02-01

Pitts, Harold I.

Communications: electrical

Digital comparator systems

340147R, 340151, H04Q 900

Patent

active

040064611

ABSTRACT:
The system includes a passive station dedicated to the control and acquisition of data of an electronic apparatus and arranged for communication with a central station over a non-dedicated voice band-width communication link with connections being established from the central station. The passive station includes means to initiate a call-out operation under alarm conditions, but the communication is limited to the establishment of the connection and the transmission of a ready signal to the central station inviting the central station to issue a command to the passive station to transmit information.

REFERENCES:
patent: 3452329 (1969-06-01), Pepin
patent: 3493930 (1970-02-01), Stoffels
patent: 3529293 (1970-09-01), Sullivan

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