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:
Jun. 23, 2026
Filed:
Feb. 21, 2022
Hitachi, Ltd., Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention aims to provide a control device that reduces load and can provide early detection of program tampering. A main storage unitstores a main applicationand illegal command information. The main applicationis an extension program in which target commands, which are at least some of the commands included in a prescribed program, have been converted into extension commands. The illegal command informationindicates the target commands. A command monitoring unit: compares executed commands, which are commands that have been executed by the CPU, and target commands, which are indicated in the illegal command information; and determines whether or not an executed command is an illegal command, based on the comparison results.