Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1987-06-04
1989-01-31
Lee, John D.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455607, 455612, G02B 628
Patent
active
048011908
ABSTRACT:
A two-way optical fiber transmission network comprises: a center that transmits and receives information; a plurality of areas each containing a plurality of subscribers using information from the center; an optical start coupler connected at least with the plurality of subscribers in the area which is in the shortest distance to the center; an optical fiber cable connecting the optical star coupler with the center; and optical fiber cables connecting the plurality of subscribers in the remaining areas with the center.
REFERENCES:
patent: 4511208 (1985-04-01), Ozeki et al.
patent: 4568931 (1986-02-01), Biolley et al.
patent: 4690491 (1987-09-01), Stein et al.
patent: 4705350 (1987-11-01), Cheng
Hitachi , Ltd.
Lee John D.
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