Electrical computers and digital processing systems: support – Digital data processing system initialization or configuration
Reexamination Certificate
2004-09-17
2008-12-09
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Digital data processing system initialization or configuration
C713S189000, C713S193000
Reexamination Certificate
active
07464256
ABSTRACT:
A processing system including a bios protection device and method of protecting a bios is provided. The system comprises a central processor (11), and a BIOS memory device (18) to which the BIOS protection device (17) is interconnected by address and data paths (16). At start-up, the BIOS protection device (17) takes control of the memory address and data paths (16) and prevents execution of a boot program stored in the BIOS memory device (18) until the BIOS protection device (17) has verified that the boot program stored in the BIOS memory device (18) is authentic. The BIOS protection device (17) is connected to the processing system between a central processor (11) and the BIOS memory device (18), and includes address and data path interface connection means (24, 25), and an authentication processor (21). When power is applied to the BIOS protection device (17), the BIOS protection device (17) takes control of address and data path(s) (16) to which it is connected and the authentication processor (21) interrogates the BIOS memory device (18) connected to the address and data path(s) (16) to determine if the boot program contained in the BIOS memory device (18) is authentic. Only if the boot program is determined to be authentic does the BIOS protection device (17) release control of the address and data path(s) (16) to permit the central processor (11) to execute the boot program.
REFERENCES:
patent: 4862156 (1989-08-01), Westberg et al.
patent: 5643086 (1997-07-01), Alcorn et al.
patent: 5802592 (1998-09-01), Chess et al.
patent: 5844986 (1998-12-01), Davis
patent: 5937063 (1999-08-01), Davis
patent: 6071190 (2000-06-01), Weiss et al.
patent: 6263431 (2001-07-01), Lovelace et al.
patent: 6401208 (2002-06-01), Davis et al.
patent: 6488581 (2002-12-01), Stockdale
patent: 6564326 (2003-05-01), Helbig, Sr.
patent: 6625730 (2003-09-01), Angelo et al.
patent: 6735696 (2004-05-01), Hannah
patent: 6889341 (2005-05-01), Collins et al.
patent: 7073064 (2006-07-01), Angelo et al.
patent: 2001/0007131 (2001-07-01), Galasso et al.
patent: 2002/0004905 (2002-01-01), Davis et al.
patent: 2003/0064771 (2003-04-01), Morrow et al.
patent: 2004/0003322 (2004-01-01), Collins et al.
patent: 2005/0014559 (2005-01-01), Mattice et al.
patent: WO 00/10283 (2000-02-01), None
patent: WO 01/59564 (2001-08-01), None
Trusted Computing Platforms TCPA Technology in Context, Pearson, Editor, 2003 by Hewlett-Packard Company ISBN 0-13-009220-7.
Aristocrat Technologies Australia Pty. Limited
Lee Thomas
McAndrews Held & Malloy Ltd.
Tran Vincent T
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