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. 30, 2010
Filed:
Jul. 19, 2006
Yusuke Funayose, Saitama, JP;
Takao Yamamoto, Saitama, JP;
Tomohiko Yashiro, Saitama, JP;
Takeshi Konno, Saitama, JP;
Masaki Yamazaki, Saitama, JP;
Sho Yamamoto, Saitama, JP;
Yusuke Funayose, Saitama, JP;
Takao Yamamoto, Saitama, JP;
Tomohiko Yashiro, Saitama, JP;
Takeshi Konno, Saitama, JP;
Masaki Yamazaki, Saitama, JP;
Sho Yamamoto, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A control unit having an immobilizer function includes a circuit for transmitting a request signal within a predetermined range. After receiving a reply signal from an electronic key in response to this request signal once and allowing a movable body to move, when a reply signal to the periodically sent request signal is not received, it is determined that the electronic key is out of the range, and it is assumed that the key has been dropped. A monitor section outputs a warning signal and transmits the warning signal to the navigation unit. A navigation unit, in response to the warning signal, stores the location at that time as the positional information on the electronic key. The navigation unit also displays a map showing the location of a key based on positional information on the electronic key. With this system, a lost electronic key may be readily located.