Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1976-08-24
1978-02-14
Murray, Richard
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
H04B 900
Patent
active
040741273
ABSTRACT:
An optical fiber communication system using group transmission which transmits PCM information by utilizing an optical fiber group composed of a plurality of optical fibers. The PCM information in a plurality of optical fibers is stored in a memory of the system's sending terminal, the stored information of each memory is read out by simultaneous clock pulses so as to send out the information to a transmission line which is composed of a plurality of said optical fibers. A repeater is provided in the transmission line having at least one of the following circuits, an AGC circuit, a light element control circuit, a power supply circuit and a supervisory circuit. The supervisory circuit is commonly provided for checking a plurality of signals which is transmitted by the above-mentioned optical fibers. In the repeater, the signals are regenerated by simultaneous clock pulses which are generated from one common timing circuit, and the phases of the signals are arranged in order for sending out said signals to the transmission line composed of said optical fibers.
REFERENCES:
patent: 3727061 (1973-04-01), Dworkin
patent: 3801819 (1974-04-01), Ohnsorge
patent: 3851167 (1974-11-01), Levine
Mochida Yukou
Ogawa Tadao
Yamaguchi Kazuo
Fujitsu Limited
Murray Richard
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