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:
May. 03, 2011
Filed:
Dec. 19, 2005
Hassan Hajji, Yamato, JP;
Seiichi Kawano, Sagamihara, JP;
Masana Murase, Yokohama, JP;
Susumu Shimotono, Hadano, JP;
Hassan Hajji, Yamato, JP;
Seiichi Kawano, Sagamihara, JP;
Masana Murase, Yokohama, JP;
Susumu Shimotono, Hadano, JP;
Lenovo (Singapore) Pte. Ltd., Singapore, SG;
Abstract
A boot block that contains a first public key is activated and a system Basic Input/Output System (BIOS) that contains a second public key and a first digital signature is verified, the verifying being performed by confirming that the first and second public keys match. In response to a determination that the first and second public keys match, the BIOS is activated and a system image is loaded to a real device. The system image is verified by confirming that the first digital signature that is stored in the system BIOS matches a second digital signature that is stored in a mass storage device. In response to the first and second digital signatures matching, a virtual mass storage device is created. Control of the virtual mass storage device is transferred to a boot strap code in an operating system image and the operating system image is booted from the virtual mass storage device.