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:
Oct. 20, 2026
Filed:
Mar. 07, 2025
Megachips Corporation, Osaka, JP;
Ippei Tanaka, Osaka, JP;
Hajime Yoshimura, Osaka, JP;
MEGACHIPS CORPORATION, Osaka, JP;
Abstract
A control circuit executes; processing a plurality of bits constituting confidential information one after another, each of the bits being a processing target bit; causing a calculation circuit to execute a first calculation by a first calculation circuit and a second calculation by a second calculation circuit when the processing target bit has a logic value of '1'; and causing the calculation circuit to execute only the second calculation of the first calculation and the second calculation when the processing target bit has a value of “0”. A counter circuit outputs a counter value based on the number of processing target bits subjected to only the second calculation of the first calculation and the second calculation by the calculation circuit. A comparison circuit compares the counter value with an expected value for the counter value based on the confidential information.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile