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:
Nov. 13, 2012
Filed:
Nov. 25, 2008
Yasushi Hamada, Hiroshima, JP;
Yasushi Hamada, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
A transmitting antenna to transmit a request signal in a vehicle compartment is disposed off the center line of the vehicle compartment in a vehicle width direction. The output strength of the request signal transmitted by the transmitting antenna is switched in such a manner that a receivable output range of the request signal by a portable device reaches one of both doors which is equipped with one of access switches which has been operated. Accordingly, it can be properly recognized whether the portable device is located inside the vehicle compartment or outside the vehicle compartment even if the transmitter to transmit the request signal in the vehicle compartment is disposed off the center line of the vehicle compartment in the vehicle width direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile