Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1991-05-06
1992-04-28
Eisenzopf, Reinhard J.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359110, 379 4, 370 16, H04B 1002, H04B 1008
Patent
active
051092964
ABSTRACT:
A transmission line switching system for switching a transmission line in operation to another transmission line when a fault occurs in the transmission line during operation comprising: a transmission line in operation constituted by a plurality of terminal repeaters, a plurality of circuit switching apparatuses, and a plurality of transmission cables, all connected in series; and another transmission line provided between a head terminal repeater and an end terminal repeater; wherein when a transmission cable is completely disconnected, information input from the head terminal repeater is returned from a terminal repeater located just before a disconnection in the transmission cable to the head terminal repeater, transferred from the head terminal repeater to the end terminal repeater through the another transmission line, returned from the end terminal repeater to a terminal repeater located just after the disconnection in the transmission cable, and returned to the end terminal repeater.
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patent: 3882456 (1975-05-01), Takada
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patent: 4449247 (1984-05-01), Waschka, Jr.
patent: 4630268 (1986-12-01), Rodenbaugh
patent: 4688260 (1987-08-01), Shutterly et al.
Naohiro Kakizaki et al.; Review of the Electrical Communication Laboratory; A Study of an Automatic Supergroup Switching System; Oct. 1969; vol. 17, No. 10, pp. 1110-1122.
Fukushima Takeo
Kurokawa Masumi
Nishimura Kohichi
Eisenzopf Reinhard J.
Fujitsu Limited
Negash Kinfe-Michael
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