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. 12, 2011
Filed:
Dec. 18, 2006
William J. Westerinen, Issaquah, WA (US);
Todd L. Carpenter, Monroe, WA (US);
Alexander Frank, Bellevue, WA (US);
Shon Schmidt, Seattle, WA (US);
Stephen Richard Drake, Seattle, WA (US);
David James Foster, Bellevue, WA (US);
Tse-ching James Yu, Woodinville, WA (US);
William J. Westerinen, Issaquah, WA (US);
Todd L. Carpenter, Monroe, WA (US);
Alexander Frank, Bellevue, WA (US);
Shon Schmidt, Seattle, WA (US);
Stephen Richard Drake, Seattle, WA (US);
David James Foster, Bellevue, WA (US);
Tse-Ching James Yu, Woodinville, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A pay-per-use computer, or other electronic device that uses local security, may use a security module or other circuit for monitoring and enforcement of a usage policy. To help prevent physical attacks on the security module, or the circuit board near the security module, a second circuit may be mounted over the security module to help prevent access to the security module. Both circuits may be mounted on a interposer and the interposer mounted to the circuit board, creating a stack including the first circuit, the interposer, the security module, and a main PC board. When the PC board includes dense signal traces under the security module a three dimensional envelope is created around the security module. When the first circuit is a high value circuit, such as a Northbridge, the risk/reward of attacking the security module is increased substantially and may deter all but the most determined hackers.