Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2008-07-01
2008-07-01
Nguyen, Than (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S152000, C726S026000, C726S027000
Reexamination Certificate
active
07395394
ABSTRACT:
A computer system and method that are useful for embedded operating systems, thin client computing applications and the like, protects memory blocks in a nonvolatile version of the system program used at startup (reboot), for example in flash memory. Write operations to protected memory blocks are intercepted. A potentially revised version of any attempted re-written block is maintained in RAM and can be revised further during runtime, the original protected block remaining unwritten. A restriction process flags when or whether a revised block in the RAM is to become permanent. During a write operation or at orderly system shutdown, the revised blocks that were marked are written over the protected blocks in the nonvolatile version. The process can be embodied using file and directory attributes in variably sized Ramdisk virtual drive in a Windows XP-embedded system, providing processes with read access to the original protected block as well as the revisions, enabling configuration changes and software installations without multiple reboots.
REFERENCES:
patent: 6996706 (2006-02-01), Madden et al.
patent: 2003/0140238 (2003-07-01), Turkboylan
patent: 2004/0049645 (2004-03-01), Lee et al.
patent: 2005/0027957 (2005-02-01), Page et al.
patent: 2005/0044548 (2005-02-01), Page
patent: 2006/0265756 (2006-11-01), Campbell et al.
patent: 2006/0282896 (2006-12-01), Qi
Microsoft, Windows XP EWF Overview; Last updated Sep. 21, 2004.
Federa Norbert
Gibson Michael Scaife
Hewlett--Packard Development Company, L.P.
Nguyen Than
LandOfFree
Computer operating system with selective restriction of... 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 operating system with selective restriction of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer operating system with selective restriction of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2811591