Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1989-11-20
1991-01-08
Ullah, Akm
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455610, 370 1, G02F 100, H04J 1400, G02B 626
Patent
active
049830112
ABSTRACT:
An optoelectrical connector device comprising a first and a second optical terminal connected to a main optical transmission line, a third optical terminal connected to a subsidiary optical transmission line, a first and a second light receiving means, and a first and a second light emitting means. The second light receiving means and the first light emitting means are optically connected to each other, and transmit a signal to a first information processing unit and receive the processed signal from it. The second optical terminal is connected optically to the first light receiving means and the second light emitting means, and transmits a signal to the first information processing unit and receives the processed signal from it. The third optical terminal is connected optically to the first light receiving means and transmits a signal to a second information processing unit.
REFERENCES:
patent: 4227075 (1980-10-01), Holland
patent: 4762832 (1988-08-01), Gade et al.
patent: 4859019 (1989-08-01), Bevan
Kobayashi Toyohiro
Tanaka Toshiyasu
Tsuzaki Nozomi
E. I. Du Pont de Nemours and Company
Ullah Akm
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