Title:
通信不正成立防止システム
Document Type and Number:
Japanese Patent JP6588389
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a communication fraud enactment prevention system capable of accurately detecting fraud communication.SOLUTION: A transmission radio wave Sa is transmitted from a vehicle 1, and an electronic key 2 transmits a response radio wave Sb. The authenticity of the communication is determined by measuring delay time in the transmission and reception of the radio wave. The authenticity of the communication is determined while considering whether the communication uses altered carrier frequency by changing the carrier frequency of the radio wave at irregular timing when transmitting and receiving the radio wave for delay time estimation.SELECTED DRAWING: Figure 1
More Like This:
| JP2001155124 | CARD SYSTEM |
| WO/2015/056407 | TRANSMITTING AND RECEIVING SYSTEM |
| JPS60148973 | ROOM ENTRY CONTROL METHOD OF CALCULATOR ROOM |
Inventors:
Tomomi Imai
Kenichi Koga
Kenichi Koga
Application Number:
JP2016111253A
Publication Date:
October 09, 2019
Filing Date:
June 02, 2016
Export Citation:
Assignee:
Tokai Rika Electric Co., Ltd.
International Classes:
E05B49/00; B60R25/24; H04L9/32
Domestic Patent References:
| JP2013177132A | ||||
| JP2014146878A | ||||
| JP201267500A | ||||
| JP201252361A | ||||
| JP2012193514A | ||||
| JP2011208463A | ||||
| JP2006118887A | ||||
| JP2015131608A | ||||
| JP2012175518A | ||||
| JP200313644A | ||||
| JP201581415A |
Foreign References:
| WO2016063717A1 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda