Communications: electrical – Digital comparator systems
Patent
1978-02-28
1979-05-29
Shaw, Gareth D.
Communications: electrical
Digital comparator systems
3401461BA, 340163, 364119, G06F 1108
Patent
active
041568664
ABSTRACT:
A central processor exercises on-off power control over a number of widely spaced loads and determines the status of the loads through a system which includes a transmitter-receiver terminal at each load and a common data bus connecting the central station to all of the transmitter-receivers. Each receiver has a unique address and the processor addresses one of the receivers by sending a message consisting of the receiver's address plus a command signal over the bus. A valid message consists of two sequential transmissions of the unit's address and the combination of command signals that accompany these addresses determines the function that is enabled at the receiver. All transmissions are serial and repeaters interposed in the bus restore signal levels and provide power to nearby terminals.
REFERENCES:
patent: 3470542 (1969-09-01), Trantanella
patent: 3539998 (1970-11-01), Belcher et al.
patent: 3771135 (1973-11-01), Huettner et al.
patent: 3796994 (1974-03-01), Nuss, Jr.
patent: 3828313 (1974-08-01), Schull et al.
patent: 3833930 (1974-09-01), Macker
patent: 3876980 (1975-04-01), Haemmig et al.
patent: 3898373 (1975-08-01), Walsh
patent: 3909790 (1975-09-01), Shapiro et al.
patent: 3919690 (1975-11-01), Field et al.
patent: 3990046 (1976-11-01), Katz et al.
patent: 4007458 (1977-02-01), Hollabaugh
patent: 4060735 (1977-11-01), Pascucci et al.
Heckler Thomas M.
Shaw Gareth D.
Systems Technology Corporation
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