Optical transmission apparatus

Details Optical transmission apparatus Optical transmission apparatus

2007-12-11

2007-12-11

Phan, Hanh (Department: 2613)

Optical communications

Transmitter and receiver system

Including optical circuit board

C398S058000, C398S059000, C398S060000, C398S071000, C398S072000, C398S073000, C398S015000, C398S036000, C398S033000, C398S082000, C398S083000, C398S100000, C398S182000, C398S183000, C398S202000, C398S135000, C398S138000, C398S139000, C398S141000, C398S079000, C385S024000, C385S015000, C385S031000, C385S053000, C385S088000, C385S089000, C385S092000, C385S093000, C250S227110

Reexamination Certificate

active

10397428

ABSTRACT:
In an optical transmission apparatus in which a plurality of nodes are optically connected to one another via an optical transmission path, a light signal which is coded so that a mixture ratio of 1 and 0 constituting data is made close to 50% is transmitted through the optical transmission path. When a light signal is not emitted from all of the nodes, a dummy signal which is an AC-like signal is emitted to the optical transmission path. Therefore, an optoelectric conversion section can be always set to an active state, and the signal recognizability can be prevented from being lowered.

REFERENCES:
patent: 4063220 (1977-12-01), Metcalfe et al.
patent: 6441935 (2002-08-01), Araki et al.
patent: 6724993 (2004-04-01), Koike et al.
patent: 2002/0101874 (2002-08-01), Whittaker et al.
patent: A 2002-62457 (2002-02-01), None

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