Dataset powered by control and data signals from data terminal

Details Dataset powered by control and data signals from data terminal Dataset powered by control and data signals from data terminal

1983-02-16

1985-08-06

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

179170J, 179 2DP, H04B 344

Patent

active

045340390

ABSTRACT:
A dataset apparatus is powered by voltages extracted from electrical signals passing between the data terminal apparatus and the dataset by circuits comprising a capacitor and diode combination. The transmitter of the dataset includes capacitance isolation of the signal from the transmission lines by applying an oscillated voltage and an inverted oscillated voltage dependent upon the signal to capacitors in a first circuit to charge the capacitors through a diode whereby the oscillating voltage causes the capacitors to discharge through a second path formed by further diodes to charge a pair of capacitors coupled across the transmission lines. A second circuit of similar impedance to the first charges the capacitors to the opposite polarity. The arrangement can handle high common mode voltages on the transmission lines. The receiver of the dataset includes a doubly balanced resistance bridge network connecting the transmission lines to a differential amplifier, the circuit being balanced such that signals from the transmitter are not applied to the amplifier and also common mode signals are not applied to the amplifier.

REFERENCES:
patent: 2777057 (1957-01-01), Pankove
patent: 2918573 (1959-12-01), Hollmann
patent: 3435358 (1969-03-01), Rheinfelder
patent: 3748411 (1973-07-01), Heyes et al.
patent: 3835334 (1974-09-01), Notteau
patent: 4077030 (1978-02-01), Heleava
"Lynch Communication Systems" 3RU14 Line Repeater Unit Communication System for Telephone, Telegraph, Microwave Data Transmission and Control Applications, May 1971, p. 2041-1.

Affiliated with

Also associated with

Rating

Dataset powered by control and data signals from data terminal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dataset powered by control and data signals from data terminal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dataset powered by control and data signals from data terminal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-516817