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:
Feb. 27, 2024
Filed:
Mar. 03, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Teruyoshi Yamaguchi, Tokyo, JP;
Nobuhiro Kobayashi, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
When a hash expected value, which is an expected value of a hash value of activation software, is stored in a storing unit (), a security calculation unit () compares the hash value of the activation software with the hash expected value. A main calculation unit () activates the activation software when the hash value and the hash expected value match, and stops a process when both do not match. The main calculation unit () performs signature verification for the activation software when the hash expected value is not stored in the storing unit (), and stores in the storing unit () as the hash value expected value, the hash value of the activation software as well as activates the activation software when the signature verification is successful. The main calculation unit () stops a process when the signature verification is not successful.