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. 18, 2020
Filed:
Feb. 05, 2019
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
A monitoring device includes: a PUF-information acquiring unit acquiring PUF-information; a first PUF-information change value calculating unit calculating a degree of change from PUF-information acquired at a previous time to PUF-information acquired at a current time as a first PUF-information change value; a second PUF-information change value calculating unit calculating a degree of change from initial PUF-information to the PUF-information acquired at the current time as a second PUF-information change value; an unauthorized use determining unit comparing the first PUF-information change value with a first threshold and determining that there is unauthorized use of the predetermined monitoring target device when the first PUF-information change value is greater than the first threshold; and a deterioration determining unit comparing the second PUF-information change value with a second threshold and determining that the predetermined monitoring target device has deteriorated when the second PUF-information change value is greater than the second threshold.