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. 05, 2020
Filed:
Oct. 06, 2014
Applicant:
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Inventors:
Wataru Tsujita, Chiyoda-ku, JP;
Kenji Inomata, Chiyoda-ku, JP;
Seiya Nagashima, Chiyoda-ku, JP;
Kazuhiro Tahara, Chiyoda-ku, JP;
Assignee:
Misubishi Electric Corporation, Chiyoda-ku, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 5/02 (2010.01); B61L 25/02 (2006.01); B61L 3/12 (2006.01); B61L 15/00 (2006.01); G01S 11/10 (2006.01); G01S 5/08 (2006.01); G01S 11/12 (2006.01);
U.S. Cl.
CPC ...
B61L 25/025 (2013.01); B61L 3/125 (2013.01); B61L 15/0027 (2013.01); B61L 25/021 (2013.01); B61L 25/026 (2013.01); G01S 5/02 (2013.01); G01S 5/08 (2013.01); G01S 11/10 (2013.01); G01S 11/12 (2013.01);
Abstract
Based on a ratio between Doppler frequencies calculated from a plurality of reception signals outputted by a receiver, a position detector calculates a relative position of a plurality of antennas in a mobile wireless apparatus to a stationary wireless apparatus. A train position detector calculates a position of a train from the calculated relative position, a placement position of the stationary wireless apparatus and placement positions in the train of the plurality of antennas.