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:
Nov. 19, 2013
Filed:
Jan. 10, 2011
Masafumi Kamakura, Yokohama, JP;
Koji Takatori, Tokyo, JP;
Yasuyuki Fukashiro, Yokohama, JP;
Tetsuya Uda, Yokohama, JP;
Hidemasa Narita, Yokohama, JP;
Masafumi Kamakura, Yokohama, JP;
Koji Takatori, Tokyo, JP;
Yasuyuki Fukashiro, Yokohama, JP;
Tetsuya Uda, Yokohama, JP;
Hidemasa Narita, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Multiplexing-technology based large-capacity transmission requires the installation of many types of interface card. In addition, supporting a redundant configuration for preventing data communication from being interrupted requires the devices and cards more than double those required for the production system. An optical communication card includes multiple optical signal transmission/reception units, main signal processing units corresponding to the optical signal transmission/reception units and required for a multiplexed system, and a connection selection unit that can switch among multiple optical transmission lines, and each of the main signal processing units includes multiple function units and a function selection unit.