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. 27, 2016

Filed:

May. 20, 2013
Applicant:

Nec Corporation, Minato-ku, Tokyo, JP;

Inventors:

Sachio Teramoto, Tokyo, JP;

Koji Kida, Tokyo, JP;

Hiroki Tagato, Tokyo, JP;

Tomohito Ando, Tokyo, JP;

Assignee:

NEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08G 5/00 (2006.01); B64F 1/00 (2006.01); G08G 5/04 (2006.01);
U.S. Cl.
CPC ...
G08G 5/0017 (2013.01); B64F 1/002 (2013.01); G08G 5/0043 (2013.01); G08G 5/045 (2013.01);
Abstract

A peripheral aircraft selection means maps a region in a 3D space defined by a start point of period information of the aircraft of interest, a point having the coordinate values of passage position coordinates at an end point of the period information and a lower limit arrival time, and a point having the coordinate values of passage position coordinates at the end point of the period information and an upper limit arrival time onto a 2D plane by use of a first projection matrix. The peripheral aircraft selection means then selects a peripheral aircraft which can abnormally near to the aircraft of interest by determining how the resultant region crosses with a circle whose center is a passage position of the peripheral aircraft and whose radius is a determination standard threshold as to whether abnormal nearing will occur.


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