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:
Jul. 19, 2005
Filed:
Aug. 02, 2002
Kazuo Takatsu, Kanagawa, JP;
Yoshinori Tochiki, Kanagawa, JP;
Kimio Uekama, Kanagawa, JP;
Takeshi Sakamoto, Kanagawa, JP;
Kazuo Takatsu, Kanagawa, JP;
Yoshinori Tochiki, Kanagawa, JP;
Kimio Uekama, Kanagawa, JP;
Takeshi Sakamoto, Kanagawa, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical transmission device has an optical amplifier, first and second control signal reception units and a transmission unit. The first control signal reception unit receives control signals from a receiving end optical service channel. The second control signal reception unit receives control signals from an operator. The transmission unit transmits to the optical amplifier, either the control signals from the receiving end optical service channel or the control signals from the operator so that the optical amplifier operates in either an automatic level control mode or an automatic gain control mode.