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:
Feb. 23, 2016
Filed:
Jun. 03, 2014
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Fujitsu Telecom Networks Limited, Kawasaki-shi, Kanagawa, JP;
Yuichiro Sakane, Fukuoka, JP;
Koji Matsunaga, Munakata, JP;
Yasuo Tanaka, Fukuoka, JP;
Tatsuya Toyozumi, Onojo, JP;
Koji Bato, Fukuoka, JP;
Wataru Kawasaki, Kawasaki, JP;
Tatsuhiko Saito, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An optical communication apparatus includes a variable resistor unit, a measurement unit, and a control unit. The variable resistor unit is arranged at a pre-stage of an electrical/optical conversion unit, which converts an electrical signal obtained by converting an input packet to an optical signal having a waveform corresponding to a potential difference between a positive phase component and a negative phase component of the electrical signal by using the potential difference. The variable resistor unit provides a resistor that varies a midpoint of potential of the positive phase component or the negative phase component. The measurement unit measures a ratio of a presence period, which is a period where the input packet is present, to a sum of the presence period and a non-presence period. The control unit controls a value of the resistor provided to the positive phase component or the negative phase component based on the ratio.