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:
Apr. 09, 2024
Filed:
Oct. 16, 2019
Mitsubishi Power, Ltd., Yokohama, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
The control device is configured to communicate with another device via a communication network, and comprises: a key acquisition unit configured to acquire, from a key distribution server via the communication network, an encryption key with a life period for performing encrypted communication with the another device; an encrypted communication processing unit configured to perform the encrypted communication with the another device using the encryption key within the life period; a server state detection unit configured to detect a key acquisition disabled state where acquisition of the encryption key by the key acquisition unit is disabled; and a life extension unit configured to perform extension processing for extending the life period if the key acquisition disabled state is detected.