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. 15, 2009
Filed:
Apr. 10, 2003
Ryan Charles Catherman, Raleigh, NC (US);
Steven Dale Goodman, Raleigh, NC (US);
James Patrick Hoff, Raleigh, NC (US);
Randall Scott Springfield, Chapel Hill, NC (US);
James Peter Ward, Raleigh, NC (US);
Ryan Charles Catherman, Raleigh, NC (US);
Steven Dale Goodman, Raleigh, NC (US);
James Patrick Hoff, Raleigh, NC (US);
Randall Scott Springfield, Chapel Hill, NC (US);
James Peter Ward, Raleigh, NC (US);
Lenovo (Singapore) Pte. Ltd., Singapore, SG;
Abstract
A computer system is presented which provides a trusted platform by which operations can be performed with an increased level trust and confidence. The basis of trust for the computer system is established by an encryption coprocessor and by code which interfaces with the encryption coprocessor and establishes root of trust metrics for the platform. The encryption coprocessor is built such that certain critical operations are allowed only if physical presence of an operator has been detected. Physical presence is determined by inference based upon the status of registers in the core chipset.