Hierarchical file system and anti-tearing algorithm for a limited-resource computer such as a smart card
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 9, 2006
Grant Date -
Jun 19, 2003
app pub date -
Sep 11, 2002
filing date -
Sep 17, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A limited resource computer such as one based upon an integrated circuit card ('smart card') or embedded processor employs a full hierarchical file system consistent with desktop and laptop computers, thereby enabling the full execution of application programs. This hierarchical file system contains both files and directories and is consistent with the following limited resource computer considerations: small code size for implementation; compact representation; robust to errors due to loss of power and/or master clock signal; fast access and retrieval; and being appropriate for memory-only storage. Along with doubly linking each of the memory blocks, the present invention also includes an anti-tearing algorithm for data consistency protection in case either power or the master clock signal is removed from the limited resource computer before a write operation is complete. The anti-tearing algorithm is operative to ensure that data residing in any object of the hierarchical file system.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully