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:
May. 20, 2025
Filed:
Sep. 14, 2020
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Kyo Minoguchi, Musashino, JP;
Hiroaki Katsurai, Musashino, JP;
Yoichi Fukada, Musashino, JP;
Tomoaki Yoshida, Musashino, JP;
Assignee:
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/80 (2013.01); H02J 7/35 (2006.01); H04B 10/60 (2013.01);
U.S. Cl.
CPC ...
H04B 10/807 (2013.01); H02J 7/35 (2013.01); H04B 10/60 (2013.01);
Abstract
A light receiving portion of a photodiode is connected to an external light source via an optical transmission line. A power storage unit stores electrical energy generated by the photodiode. A bias circuit takes out electrical energy corresponding to the amount of stored power from the power storage unit, and applies a voltage to the cathode of the photodiode.