Pulse or digital communications – Repeaters – Testing
Patent
1989-07-28
1991-09-03
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
370 15, 370 8512, H04L 2560
Patent
active
050461850
ABSTRACT:
A regenerative repeater for regeneratively repeating a signal to be transmitted is inserted in two ring-like transmission lines, and is provided with loop back means for automatically separating the regenerative repeater from the ring-like transmission lines in the condition that a power supply is in a not-yet-turned-on state, so that closed ring-like transmission lines are formed in the form where the regenerative repeater is removed in the condition that the power supply is in the not-yet-turned-on state.
REFERENCES:
patent: 4551830 (1985-11-01), Huffman
patent: 4553233 (1985-11-01), Debuysscher et al.
patent: 4685102 (1987-08-01), Lewis
patent: 4745597 (1988-05-01), Morgan et al.
patent: 4769807 (1988-09-01), Niwa et al.
patent: 4815069 (1989-03-01), Nakayashiki et al.
patent: 4887256 (1989-12-01), Nakayashiki et al.
Bekki Yoshinori
Hirai Masato
Ikezawa Sinzi
Moriguchi Teruo
Chin Stephen
Hitachi , Ltd.
Hitachi Computer Electronic Co., Ltd.
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