Optical communications – Fault recovery – Bypass inoperative element
Reexamination Certificate
2003-07-17
2009-11-03
Leung, Christina Y (Department: 2613)
Optical communications
Fault recovery
Bypass inoperative element
C398S042000, C398S145000
Reexamination Certificate
active
07613391
ABSTRACT:
An optical network system is provided which has a signal protection function and is able to be constructed of communication nodes manufactured at low costs. An optical signal transceiver has at least one optical signal transmitting device and at least one optical signal receiving device to transmit and receive an optical signal between nodes facing each other. A switching device, when no failure has occurred in the optical signal transmitting communication line and optical signal receiving communication line, transmits an optical signal from the optical signal transmitting device to an optical signal transmitting communication line and an optical signal having been received from the optical signal receiving communication line to an optical signal receiving device. The switching device, when a failure has occurred in the optical signal receiving communication line, does switching so as to be able to receive the optical signal, to be transmitted to the optical signal receiving device, from the optical signal transmitting communication line.
REFERENCES:
patent: 5194977 (1993-03-01), Nishio
patent: 5327275 (1994-07-01), Yamane et al.
patent: 5515194 (1996-05-01), Kanterakis et al.
patent: 5675676 (1997-10-01), Yamashita et al.
patent: 5777761 (1998-07-01), Fee
patent: 5973809 (1999-10-01), Okayama
patent: 6771852 (2004-08-01), Hemenway et al.
patent: 6771905 (2004-08-01), Bortz
patent: 6813408 (2004-11-01), Bortolini
patent: 6868234 (2005-03-01), Tammela et al.
patent: 7209659 (2007-04-01), Munter
patent: 2001/0038478 (2001-11-01), Hwang
patent: 2002/0044315 (2002-04-01), Sugawara et al.
patent: 2003/0170020 (2003-09-01), Chaudhuri et al.
patent: 2005/0025481 (2005-02-01), Fukashiro et al.
patent: 2005/0084262 (2005-04-01), Oberg et al.
patent: 2-244919 (1990-09-01), None
patent: 4-334135 (1992-11-01), None
patent: 10-336120 (1998-12-01), None
patent: 10336120 (1998-12-01), None
patent: 11-225118 (1999-08-01), None
patent: 2000-324055 (2000-11-01), None
patent: 2000-332805 (2000-11-01), None
patent: 2001-274751 (2001-10-01), None
Chinese Office Action dated Jan. 27, 2006, with English-Language Translation.
Gu, et al., “All Optical Telecommunications Network (Revised Edition)” Nov. 1999, pp. 1-17.
Japanese Office Action dated Jul. 11, 2007, with partial English-language translation.
Leung Christina Y
McGinn IP Law Group PLLC
NEC Corporation
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