The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 02, 2002
Filed:
Nov. 05, 1998
Kazuhiro Sakai, Nakai-machi, JP;
Tsutomu Hamada, Nakai-machi, JP;
Shinobu Ozeki, Nakai-machi, JP;
Masaki Hirota, Nakai-machi, JP;
Shinya Kyouzuka, Nakai-machi, JP;
Kenichi Kobayashi, Nakai-machi, JP;
Hiroki Ishida, Nakai-machi, JP;
Hiroshi Fujimagari, Nakai-machi, JP;
Masao Funada, Nakai-machi, JP;
Takashi Ozawa, Nakai-machi, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
An optical-signal transmission apparatus and method for optical-signal transmission, or a signal processing apparatus for signal processing including optical-signal transmission. A number of terminals (circuit boards and the like) are connected, and communication can be freely performed among the terminals. A plurality of transmission nodes input optical signals having different light intensity levels into an optical transmission medium. A desired signal is separated and extracted from a multiplex signal where these optical signals transmitted from a reception node are overlaid.