Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1985-04-04
1988-05-03
Orsino, Jr., Joseph A.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
358174, 455617, 455618, 455619, H04B 900
Patent
active
047425750
ABSTRACT:
A light signal transmission/reception system which is provided, at the side of a transmitter for converting an electrical signal into a light signal and transmitting the converted light signal, with an inserting unit for inserting reference pulse signals onto the electrical signal; and is provided, at the side of a receiver, with a unit for deriving the amount of change in the reference pulse signals; unit for compensating for the magnitude of a received signal in accordance with the amount of the change; and a unit for removing the reference pulse signals from the compensated and received signal.
REFERENCES:
patent: 2254204 (1941-09-01), Blumlein
patent: 2268811 (1942-01-01), Fewings et al.
patent: 4070572 (1978-01-01), Summerhayes
patent: 4249264 (1981-02-01), Crochet et al.
patent: 4271503 (1981-06-01), Eumurian et al.
patent: 4317235 (1982-02-01), Tsukada
patent: 4574249 (1986-03-01), Williams
Arita Setsuo
Ito Tetsuo
Hitachi , Ltd.
Orsino Jr. Joseph A.
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