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:
Oct. 16, 2001
Filed:
Sep. 02, 1997
Mario Bizzaro, Segrate, IT;
Vincenzo Condorelli, Poughkeepsie, NY (US);
Michel Henri Theodore Hack, Peekskill, NY (US);
Jeffrey Kenneth Kravitz, Yorktown Heights, NY (US);
Mark John Lindemann, Pleasantville, NY (US);
Elaine Rivette Palmer, Goldens Bridge, NY (US);
Gianluca Pedrina, Milan, IT;
Sean William Smith, Cornwall, NY (US);
Steve Harris Weingart, Boca Raton, FL (US);
International Business Mcahines Corporation, Armonk, NY (US);
Abstract
An apparatus for permitting access to protected code, protected data or protected devices only when a computer system is in a trusted state, where said trusted state occurs only when said system is executing trusted code under a set of preselected conditions. This apparatus also has a device for exiting the trusted state and for preventing access to protected code, data and devices when the trusted state is exited. The computer system is also programmed to automatically generate a disabling signal upon the completion of execution of trusted code, and this disabling signal will result in the prevention of access to protected devices or code.