Telegraphy – Systems – Alternating or pulsating current
Patent
1975-04-25
1976-06-01
Safourek, Benedict V.
Telegraphy
Systems
Alternating or pulsating current
325 30, H04L 2718
Patent
active
039611361
ABSTRACT:
A transmit phase locked loop receives data to be transmitted having a bit rate equal to a first given one of a predetermined number of different bit rates. A diphase demodulator responds to the transmit phase locked loop and the data to be transmitted to provide output data for transmission. A receive write timing signal and a receive read timing signal is coupled to a receive phase locked loop to compare the phase relation of the two timing signals. A diphase modulator responds to received data having a bit rate equal to a second given one of the predetermined number of different bit rates and a clock signal provided by the receive phase locked loop to provide output data for utilization. The first given one of different bit rates and the second given one of different bit rates may have equal or different bit rates.
REFERENCES:
patent: 3472960 (1969-10-01), Gutleber et al.
patent: 3758720 (1973-09-01), Dinn
patent: 3806647 (1974-04-01), Dohne et al.
Clark James Monroe
Cohen Stuart Barry
Magnus Arthur Howard
Hill Alfred C.
International Telephone and Telegraph Corporation
Lombardi, Jr. Menotti J.
O'Halloran John T.
Safourek Benedict V.
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