Title:
KEYLESS ENTRY DEVICE, COMMUNICATION DEVICE FOR KEYLESS ENTRY DEVICES, AND CONTROL METHOD FOR KEYLESS ENTRY DEVICES
Document Type and Number:
WIPO Patent Application WO/2017/043335
Kind Code:
A1
Abstract:
Provided is a keyless entry device with a simple configuration that can prevent fraud quickly and precisely. A first communication device 200 comprises a low frequency (LF) transmission unit 210 to wirelessly transmit a composite authentication signal having a plurality of authentication signals that use sine waves of varying frequencies as carrier waves. A second communication device 300 comprises a LF reception unit 310 to receive the composite authentication signal. Both the first communication device 200 and the second communication device 300 further comprise a processing unit 250 and a processing unit 330, respectively. The processing unit 250 and the processing unit 330 perform processing for proper events when the waveform of the composite authentication signal received by the LF reception unit 310 of the second communication device 300 satisfies prescribed conditions and perform processing for improper events when the waveform of the composite authentication signal received by the LF reception unit 310 of the second communication device 300 does not satisfy prescribed conditions.
Inventors:
MIYAZAWA AKIRA (JP)
Application Number:
PCT/JP2016/074947
Publication Date:
March 16, 2017
Filing Date:
August 26, 2016
Export Citation:
Assignee:
ALPS ELECTRIC CO LTD (JP)
International Classes:
E05B49/00; B60R25/24; H04Q9/00
Foreign References:
| JP2015147455A | 2015-08-20 | |||
| JP2014146878A | 2014-08-14 | |||
| JP5327121B2 | 2013-10-30 |
Attorney, Agent or Firm:
MATSUSHITA, Masahiro (JP)
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