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. 11, 2013
Filed:
Dec. 22, 2004
Alexander Frank, Bellevue, WA (US);
Martin H. Hall, Sammamish, WA (US);
Thomas G. Phillips, Bellevue, WA (US);
Alexander Frank, Bellevue, WA (US);
Martin H. Hall, Sammamish, WA (US);
Thomas G. Phillips, Bellevue, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A computer is adapted for pay-for-use operation by adding a isolated computing environment to a standard computer. The isolated computing environment may include a trusted non-volatile memory, a digital signature verification capability, a clock or timer and a logic circuit for triggering execution of a validation program responsive to the clock or timer. The isolated computing environment may be protected from tampering by physical or cryptographic mechanisms, or both. The validation program measures or monitors for non-compliant states of the computer and may enforce sanctions when non-compliant states of the computer are detected.