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:
Aug. 02, 2011
Filed:
Jan. 26, 2009
Gerald Keith Bartley, Rochester, MN (US);
Todd Alan Christensen, Rochester, MN (US);
Paul Eric Dahlen, Rochester, MN (US);
John Edward Sheets, Ii, Zumbrota, MN (US);
Gerald Keith Bartley, Rochester, MN (US);
Todd Alan Christensen, Rochester, MN (US);
Paul Eric Dahlen, Rochester, MN (US);
John Edward Sheets, II, Zumbrota, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and tamper detection circuit for implementing tamper and anti-reverse engineering evident detection in a semiconductor chip, and a design structure on which the subject circuit resides are provided. A capacitor is formed with the semiconductor chip including the circuitry to be protected. A change in the capacitor value results responsive to the semiconductor chip being thinned, which is detected and a tamper-detected signal is generated.