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:
Sep. 07, 2010
Filed:
Nov. 02, 2009
Jeffrey A. Kash, Pleasantville, NY (US);
James C. Tsang, White Plains, NY (US);
Daniel R. Knebel, Carmel, NY (US);
Jeffrey A. Kash, Pleasantville, NY (US);
James C. Tsang, White Plains, NY (US);
Daniel R. Knebel, Carmel, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An integrated circuit and method are provided for preventing reverse engineering by monitoring light emissions emitted from transistors and such electrically active devices in the integrated circuit. The method prevents, in an integrated circuit, a pattern of light emitted from at least one active device in the integrated circuit from being detected external to the integrated circuit by reduction of the intensity of light emitted from the at least one active device in the integrated circuit thereby preventing the reduced intensity light emitted from the at least one active device in the integrated circuit from being detected external to the integrated circuit. The intensity of light emitted from the at least one active device in the integrated circuit can be reduced by modification of operational characteristics of the at least one active device during switching transitions.