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:
Mar. 19, 2013
Filed:
Apr. 20, 2010
Yoshio Sampei, Miyagi-Ken, JP;
Yoshio Sampei, Miyagi-Ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A keyless entry device of a vehicle includes: a transmission unit installed in the vehicle that transmits a search signal to a search range including an area inside the vehicle and a vicinity area outside the vehicle; a reply unit installed in a portable device carried by a user that transmits a reply signal when receiving the search signal at several locations within the search range; a determination unit that individually determines whether the portable device is present in the area inside the vehicle and the vicinity area outside the vehicle within the search range on the basis of the reply signal transmitted from the portable device; and a control unit that controls locking or unlocking of a door of the vehicle on the basis of the determination result of the determination unit.