Communications: electrical – Continuously variable indicating – With meter reading
Patent
1991-02-22
1993-09-14
Yusko, Donald J.
Communications: electrical
Continuously variable indicating
With meter reading
34082536, 34082537, H04B 100
Patent
active
052453316
ABSTRACT:
An adapter response circuit indicates the number of adapters on a link responding to a given address and hence permits the detection of possible data collisions. Each adapter responding to the address transmitted on the link induces a current on a common conductor. The magnitude of the current unambiguously identifies the number of adapters responding to that address. The proper resistive termination of the link may be checked by inducing a similar incremental current on the conductor and evaluating a voltage variation indicating the presence or absence of a termination resistor.
REFERENCES:
patent: 4667323 (1987-05-01), Engdahl et al.
patent: 4825204 (1989-04-01), Nakamura
patent: 4920339 (1990-04-01), Friend et al.
patent: 5012468 (1991-04-01), Siegel et al.
Allen-Bradley Company Inc.
Magistre Dervis
Yusko Donald J.
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