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:
Oct. 02, 2018
Filed:
Apr. 18, 2017
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Hisao Nakashima, Kawasaki, JP;
Yoshitaka Nomura, Shinagawa, JP;
Tomofumi Oyama, Kawasaki, JP;
Yi Ge, Bunkyo, JP;
Yuichi Akiyama, Kawasaki, JP;
Yoshio Hirose, Hachioji, JP;
Takeshi Hoshida, Kawasaki, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A signal processing device includes digital signal processing circuits. Each of the digital signal processing circuits includes: a regeneration circuit that regenerates a bit stream front an electric field information signal of an optical signal; an error correction circuit that corrects an error in the bit stream; an encoder circuit that generates an encoded bit stream from received data; and a generation circuit that generates an electric field information signal from the encoded bit stream. An electric field information signal or a bit stream is given from a regeneration circuit, an encoder circuit or a generation circuit in a first digital signal processing circuit to a second digital signal processing circuit. A regeneration circuit, an error correction circuit or a generation circuit in the second digital signal processing circuit processes the electric field information signal or the bit stream given from the first digital signal processing circuit.