Telecommunications – Interference signal transmission
Patent
1996-03-14
1998-08-11
Powell, Mark R.
Telecommunications
Interference signal transmission
348 12, 348180, 359110, 370243, H04H 100, H04N 714, H04B 1008
Patent
active
057941173
ABSTRACT:
The network comprises a tree specialized in sending information signals upstream, comprising optical-fibre branches. In a junction (L5), an opto-electric conversion is performed in a receiver (RPR5, RPR6) and an electro-optical conversion in a transmitter (RPE2). In the electrical part of a junction, the transmitter of the junction (RPE2) polls the receivers of the junction (RPR5, RPR6) to receive therefrom the messages coming from downstream (5 . . . 6 . . . 5 . . . 6 . . . ), after which a message of local origin (S) is added to those coming from downstream. Although, as a result of the polling, there is no synchronism between the retransmission and the reception of the given message, a specific process makes it possible to ensure that the messages reach an upstream receiver (RPR2) in a predetermined order (S X 5 X 6 X S X 5 X 6 . . . ), which makes it possible to recognize when all the messages have been received well.
REFERENCES:
patent: 4449247 (1984-05-01), Waschka, Jr.
patent: 4451916 (1984-05-01), Casper et al.
patent: 5142690 (1992-08-01), McMullan, Jr. et al.
patent: 5442472 (1995-08-01), Skrobko
patent: 5642217 (1997-06-01), Carbone, Jr. et al.
Miller John W.
Powell Mark R.
U.S. Philips Corporation
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