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:
Jul. 16, 2024
Filed:
Jul. 08, 2022
Sanken Electric Co., Ltd., Niiza, JP;
Naohiko Shimoyama, Niiza, JP;
SANKEN ELECTRIC CO., LTD., Niiza, JP;
Abstract
An abnormality detection circuit and method of detecting an abnormality in a CPU is disclosed that may include counting a count value from an initial value to a timeout value; storing a seed value readable from the CPU; generating a key value for verification by performing a specified arithmetic processing on the seed value; waiting for a key value to be written by the CPU; comparing the key value written by the CPU with the key value for verification; and when the count value is equal to the timeout value without the counter being reset, in response to the key value and the key value for verification matching, resetting the counter and storing the seed value to be determined at the time of resetting the counter in the seed value storage section.