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:
Jun. 09, 2015
Filed:
Sep. 12, 2012
Makoto Tokumaru, Tokyo, JP;
Makoto Tokumaru, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-Ku, Tokyo, JP;
Abstract
An onboard apparatus includes: a route database that stores start and end distances from a start point and a section length of the radiowave-reception difficult area; and an onboard control device that checks the rout database to determine whether the own train is in the radiowave-reception difficult area, and when the own train is not in the radiowave-reception difficult area, confirms whether position information has been obtained from a GPS receiver, and when the position information has not been obtained from the GPS receiver, executes control to stop the own train based on a running distance and a determination threshold for determining whether to stop the own train. When the own train is in the radiowave-reception difficult area, the onboard control device does not confirm whether the position information has been obtained from the GPS receiver, and updates a train position based on information from a speed power-generator.