The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2020
Filed:
Apr. 15, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Yousuke Narimoto, Kariya, JP;
Satoshi Nagao, Kariya, JP;
Reiichirou Imoto, Kariya, JP;
Takeshi Sugashima, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A vehicle communication system includes an onboard apparatus, a mobile device, and a key issuing apparatus provided outside the vehicle for issuing a key for cryptographic communication between the mobile device and the onboard apparatus. The mobile device and the onboard apparatus store the key, and perform the cryptographic communication using the key. The key issuing apparatus issues, to the onboard apparatus, the key and validity information indicating validity of the key. The onboard apparatus includes a determination section determining whether a validity ends, and an update request section transmitting a key update request to request the issuance of a new key. When the key update request has been received, the key issuing apparatus issues a new key to the mobile device, and issues a new key and validity information on the new key to the onboard apparatus.