Transceiver

Details Transceiver Transceiver

1984-12-17

1986-12-23

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 9, 375 55, 375113, 371 22, H04L 2718, H04L 706, H04L 124

Patent

active

046317333

ABSTRACT:
A transceiver for applying signals to and receiving signals from a transmission line through a coupling transformer having a transmission line winding connected to the transmission line and a transceiver winding. A transmitter circuit is connected to the transceiver winding to apply Manchester encoded digital data signals having a high frequency to the transmission line. The transmission line can, at any instant in time, also be carrying data signals which are applied to the transmission line by other transceivers. However, only one transceiver transmits such data signals at any one time. At the same time as the transmission line may be carrying data signals, it can also be carrying timing signals which are applied to it by a timing driver circuit. The timing signals have a significantly lower frequency than the data signals and a quasi-sinusoidal wave form. The transceiver includes a first receiver which is connected across the transceiver winding and which amplifies and reshapes any data signals present across the transceiver winding and produce such signals as the data signal output of the transceiver. A second receiver is also connected across the transceiver winding. This second receiver reconstitutes the received timing signals included in the signals induced or present across the transceiver winding so that the output of the second receiver is a square wave timing signal, the frequency of which is that of the quasi-sinusoidal timing signal received.

REFERENCES:
patent: 2630493 (1953-03-01), Neiswinter
patent: 3088071 (1963-04-01), Matsushima
patent: 4013956 (1977-03-01), Dornaus et al.
patent: 4270214 (1981-05-01), Davis et al.
patent: 4529979 (1985-07-01), Kusama et al.

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