Elektronisches Schlüsselsystem und elektronischer Schlüssel

Details

Veröffentlichungs-Nr.

EP2465737

Aktenzeichen

EP11009789

Anmeldetag

12. Dezember 2011

Veröffentlichung

10. Dezember 2014

Erteilung

10. Dezember 2014

Rechtsraum

EP

IPC

B60R25/24B60R25/20

Abstract

An electronic key system (3) that performs ID verification communication to verify an ID of an electronic key (1). The ID verification communication is started by transmission of a wireless signal from a vehicle (2) and performed between the vehicle (2) and the electronic key (1). The electronic key system (3) determines the location of the electronic key (1) in accordance with the received signal strength of a radio wave used for the ID verification communication. A signal strength measurement circuit (17, 18, 19) measures a first signal strength (B1), which is the received signal strength when a signal from the electronic key (1) is received, and a second signal strength (B2), which is the received signal strength of the radio wave during a vacant time (Tw) when the electronic key (1) is performing the ID verification communication. A control unit (11c, 11d) controls operation of the electronic key (1) in accordance with a measurement result (D) of the first and second signal strengths (B1, B2).

Anmelder

Firma

KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO

Land

🇯🇵 Japan

Fachgebiete