Title:
COMMUNICATION SYSTEM, DEVICE, DEVICE CONTROL METHOD, AND PORTABLE DEVICE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/192448
Kind Code:
A1
Abstract:
This communication system comprises a portable device (200) and a device (100). With a common key being stored in the portable device (200), the device (100) uses the common key to acquire unique data from the portable device (200), generates a unique key by using the acquired unique data, stores the generated unique key as a service key in the device (100), and transmits the generated unique key to the portable device (200). With a common key being stored in the portable device (200), the portable device (200), if receiving a unique key from the device (100), rewrites a service key stored in the portable device (200) from the common key to the unique key.
Inventors:
SOBUE KEITA (JP)
OHASHI YOSUKE (JP)
MOCHIZUKI SHINGO (JP)
SHIMIZU NORIHIRO (JP)
OHASHI YOSUKE (JP)
MOCHIZUKI SHINGO (JP)
SHIMIZU NORIHIRO (JP)
Application Number:
PCT/JP2020/046491
Publication Date:
September 30, 2021
Filing Date:
December 14, 2020
Export Citation:
Assignee:
TOKAI RIKA CO LTD (JP)
International Classes:
H04L9/08; E05B19/00; E05B49/00
Domestic Patent References:
| WO2013114972A1 | 2013-08-08 |
Foreign References:
| JP2016116216A | 2016-06-23 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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