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:
Dec. 07, 2021

Filed:

Oct. 01, 2019
Applicant:

Fujitsu Limited, Kawasaki, JP;

Inventors:

Hiroko Suzuki, Kawasaki, JP;

Takahiro Saito, Asaka, JP;

Isamu Watanabe, Kawasaki, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 13/91 (2006.01); G08G 3/02 (2006.01); G08G 3/00 (2006.01); B63B 49/00 (2006.01); G01C 21/20 (2006.01); G08G 9/02 (2006.01); G01C 21/34 (2006.01);
U.S. Cl.
CPC ...
G08G 3/02 (2013.01); B63B 49/00 (2013.01); G01C 21/20 (2013.01); G01C 21/203 (2013.01); G01C 21/34 (2013.01); G01S 13/91 (2013.01); G01S 13/917 (2019.05); G08G 9/02 (2013.01);
Abstract

A method includes: extracting Time to Closest Point of Approach included in a predetermined time from 'risk value information' that stores a 'Closest Point of Approach', the “Time to Closest Point of Approach” and a “risk value” for “a first vessel and a second vessel”, the risk value being a value indicating a possibility of collision between the first vessel and the second vessel at the Closest Point of Approach and the Time to Closest Point of Approach; acquiring the Closest. Point of Approach and the risk value corresponding to the extracted Time to Closest Point of Approach from the risk value information; determining to which sea area the acquired Closest. Point of Approach belongs to; and executing calculation processing that includes calculating a sum of risk values corresponding to the Closest Point of Approach for each of sea areas to which the determined Closest Point of Approach belongs.


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