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:
Jul. 31, 2012
Filed:
Oct. 08, 2006
Hassan Hajji, Yamato, JP;
Seiichi Kawano, Sagamihara, JP;
Takao Moriyama, Yokohama, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Unsecure system software and secure system software on the same computer system is switched between. A computer system includes one or more processors, which may not have any built-in security features, memory, and firmware. The memory stores secure system software and unsecure system software. In response to receiving a user signal, the firmware switches from the unsecure system software running on the processors to the secure system software running on the processors (and back again). While the unsecure system software is running, the secure system software is protected from tampering by the unsecure system software.