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. 21, 2026
Filed:
Apr. 28, 2021
Applicant:
Ntt, Inc., Tokyo, JP;
Inventors:
Shota Kita, Tokyo, JP;
Masaya Notomi, Tokyo, JP;
Kengo Nozaki, Tokyo, JP;
Akihiko Shinya, Tokyo, JP;
Assignee:
NTT, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/63 (2013.01); H03M 1/12 (2006.01);
U.S. Cl.
CPC ...
H04B 10/63 (2013.01); H03M 1/12 (2013.01);
Abstract
An analog-digital conversion method according to the present invention is a method for converting an optical analog signal into an electrical digital signal, the method including: performing at least one of affine transformation with first reference light and homodyne detection with a detection axis of second reference light on the optical analog signal; converting the optical analog signal subject to transformation or detection into an electrical analog signal by photoelectric conversion; and converting the electrical analog signal into an electrical digital signal by thresholding.