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:
Jan. 27, 2009
Filed:
Aug. 16, 2001
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);
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) Ptd. Ltd., Singapore, SG;
Abstract
An update utility requests a signature verification of the utility's signature along with a request to unlock the flash memory stored in the utility. A trusted platform module ('TPM') performs a signature verification of the utility using a previously stored public key. Upon verification of the signature, the TPM unlocks the flash memory to permit update of the utility. Upon completion of the update, the flash utility issues a lock request to the TPM to relock the flash memory.