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. 23, 2014
Filed:
Aug. 26, 2008
Kaushik C. Barde, Sunnyvale, CA (US);
Kaushik C. Barde, Sunnyvale, CA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
Methods, systems, apparatuses and program products are disclosed for protecting computers and similar equipment from undesirable occurrences, especially attacks by malware. Invariant information, such as pure code and some data tables may be enrolled for later revalidation by code operating outside the normal context. For example, a periodic interrupt may invoked a system management mode interrupt service routine to discover whether code regions accessible to Protected Mode programs have become corrupted or otherwise changed, such as by tampering from untrusted or untrustworthy programs that have easy access only to protected mode operation.