Title:
無線認証システム、車載用無線認証装置、無線認証方法
Document Type and Number:
Japanese Patent JP6776936
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a vehicle door from being unlocked illicitly using a radio wave relay even if a portable unit is far from a vehicle.SOLUTION: For a request signal transmitted from a vehicle-mounted wireless authentication device while specifying a portable unit, the signal strength of a portion of an authentication signal replied by the portable unit is made greater than standard signal strength. Although the vehicle-mounted wireless authentication device does not authenticate the portable unit when a portion of the authentication signal is received while duplicated, the vehicle-mounted wireless authentication device authenticates the portable unit on the basis of the authentication signal when a portion of the authentication signal is not received while duplicated.SELECTED DRAWING: Figure 12
Inventors:
Nobuyasu Okabe
Application Number:
JP2017028485A
Publication Date:
October 28, 2020
Filing Date:
February 17, 2017
Export Citation:
Assignee:
株式会社デンソー
International Classes:
E05B49/00; B60R25/24; H04Q9/00
Domestic Patent References:
| JP201152506A |
Foreign References:
| US20080143500 | ||||
| DE102015107635A1 |
Attorney, Agent or Firm:
Daisuke Mibayashi