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Title:
VEHICULAR ON-BOARD DEVICE, PORTABLE DEVICE, AND WIRELESS COMMUNICATION SYSTEM FOR VEHICLES
Document Type and Number:
WIPO Patent Application WO/2018/066404
Kind Code:
A1
Abstract:
A vehicular on-board device has a determination unit, an instruction unit, and an update unit. The determination unit determines whether to unlock a door lock on the basis of a rolling code from a portable device and a reference rolling code to be checked against this rolling code. The instruction unit instructs the portable device to increase the rolling code value when the determination unit has determined to unlock the door lock. The update unit increases the value of the reference rolling code used by the determination unit when the instruction from the instruction unit is accepted by the portable device.

Inventors:
ASANO MOTOKI
TAKIGAWA MASAMI
HAYASHI NAOKI
Application Number:
PCT/JP2017/034609
Publication Date:
April 12, 2018
Filing Date:
September 26, 2017
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
E05B49/00; B60R25/24; G06F21/34; G06F21/44; H04Q9/00; H04W12/12
Foreign References:
JP5254905B22013-08-07
JP2016012918A2016-01-21
JP2002511119A2002-04-09
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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