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.

Date of Patent:
Jan. 07, 2020

Filed:

Jun. 20, 2017
Applicant:

Hitachi, Ltd., Tokyo, JP;

Inventors:

Hisanori Matsumoto, Tokyo, JP;

Shiro Mazawa, Tokyo, JP;

Yasutaka Serizawa, Tokyo, JP;

Assignee:

HITACHI, LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 56/00 (2009.01); G01V 1/26 (2006.01); G01S 19/39 (2010.01); G01S 19/14 (2010.01); G01S 19/01 (2010.01); G01V 1/24 (2006.01); G08C 17/02 (2006.01); G01V 1/22 (2006.01);
U.S. Cl.
CPC ...
H04W 56/006 (2013.01); G01S 19/01 (2013.01); G01S 19/14 (2013.01); G01S 19/39 (2013.01); G01V 1/247 (2013.01); G01V 1/26 (2013.01); G08C 17/02 (2013.01); G01V 1/22 (2013.01); G01V 2200/12 (2013.01);
Abstract

A time synchronization system includes: a position information acquisition unit configured to acquire installation position information related to an installation position of a time synchronization target whose time is synchronized; a time synchronization signal acquisition unit configured to receive a positioning signal transmitted from a positioning satellite as a time synchronization signal and acquire, from the time synchronization signal, transmission position information related a position of the positioning satellite and transmission time information at timing when the time synchronization signal is transmitted; and a signal processing unit configured to calculate synchronized time information for the time synchronization target based on the installation position information of the time synchronization target and the transmission position information and transmission time information from the time synchronization signal, and transmit the synchronized time information to the time synchronization target.


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