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. 13, 2017
Filed:
Feb. 12, 2016
Renesas Electronics Corporation, Tokyo, JP;
Yoshiyuki Amanuma, Tokyo, JP;
Takanori Miyoshi, Tokyo, JP;
Renesas Electronics Corporation, Kawasaki-shi, Kanagawa, JP;
Abstract
A logic circuit includes n storage elements (n is a positive integer) which can each store 1-bit information, and an attack detection circuit. The attack detection circuit includes an error determination circuit which can detect through a logic operation that k-bit or less errors (k is a positive integer) have occurred in n-bit codes stored in the n storage elements, and a light irradiation detection circuit which has light detection elements and can detect that light has been irradiated to (k+1) or more of the n storage elements, and it is determined that the logic circuit has been attacked from outside when the error determination circuit detects an error or the light irradiation detection circuit detects light irradiation.