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:
Jul. 05, 2016
Filed:
Jul. 18, 2013
Denso Corporation, Kariya, Aichi-pref., JP;
Nobuyoshi Nagai, Kariya, JP;
Masahito Kojima, Kariya, JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Abstract
An on-board apparatus control system comprising a portable device and a vehicle-mounted device is provided. The vehicle-mounted device controls an on-board apparatus by determining whether or not the portable device exists in an authorized area. The vehicle-mounted device causes separate transmission antennas to transmit a request signal and a determination signal, respectively. Responding to the request signal, the portable device transmits a response signal that includes information on a received strength of the determination signal. When the received signal strength of the determination signal is greater than a specified value, the vehicle-mounted device controls the on-board apparatus on assumption that the portable device exists in an unauthorized area even when the response signal is received.