Electrical computers and digital processing systems: support – Digital data processing system initialization or configuration – Loading initialization program
Reexamination Certificate
2006-03-14
2006-03-14
Browne, Lynne H. (Department: 2116)
Electrical computers and digital processing systems: support
Digital data processing system initialization or configuration
Loading initialization program
C713S164000, C713S152000
Reexamination Certificate
active
07013384
ABSTRACT:
A computer system contains selectively available boot block codes. A first boot block is of the conventional type and is stored in storage media such as flash ROM on a system planar with the processor of the computer system. A second boot block is located on a feature card and contains an immutable security code in compliance with the Trusted Computing Platform Alliance (TCPA) specification. The boot block on the feature card is enabled if the first boot block detects the presence of the feature card. The computer system can be readily modified as the computer system is reconfigured, while maintaining compliance with the TCPA specification. A switching mechanism controls which of the boot blocks is to be activated. The feature card is disabled in the event of a computer system reset to prevent access to the TCPA compliant code and function.
REFERENCES:
patent: 5379342 (1995-01-01), Arnold et al.
patent: 5410699 (1995-04-01), Bealkowski et al.
patent: 6092160 (2000-07-01), Marsters
patent: 6101601 (2000-08-01), Matthews et al.
patent: 6115815 (2000-09-01), Doragh et al.
patent: 6141730 (2000-10-01), Nishiumi et al.
patent: 6154819 (2000-11-01), Larsen et al.
patent: 6160734 (2000-12-01), Henderson et al.
patent: 6178503 (2001-01-01), Madden et al.
patent: 6185678 (2001-02-01), Arbaugh et al.
patent: 6188602 (2001-02-01), Alexander et al.
patent: 6195749 (2001-02-01), Gulick
patent: 6212555 (2001-04-01), Brooks et al.
patent: 6216225 (2001-04-01), Yoo
patent: 6223284 (2001-04-01), Novoa et al.
patent: 6237091 (2001-05-01), Firooz et al.
patent: 6415351 (2002-07-01), Kobayashi et al.
patent: 6763458 (2004-07-01), Watanabe et al.
patent: 689136 (1995-12-01), None
Trusted Computing Platform Alliance, Main Specification Version 1.1, 2000.
“Trusted Computing Platform Alliance (TCPA) Main Specification Version 1.1”, Jul. 31, 2001.
Challener David Carroll
Goodman Steven Dale
Reinberg Kevin Michael
Springfield Randall Scott
Ward James Peter
Browne Lynne H.
Dillon & Yudell LLP
Lenovo ( Singapore) Pte. Ltd.
Munoz-Bustamante Carlos
Patel Anand B.
LandOfFree
Computer system with selectively available immutable boot... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer system with selectively available immutable boot..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer system with selectively available immutable boot... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3589264