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:
Nov. 25, 2014
Filed:
Feb. 03, 2009
David Abzarian, Kirkland, WA (US);
Harish S. Kulkarni, Redmond, WA (US);
Todd L. Carpenter, Monroe, WA (US);
Cinthya R. Urasaki, Seattle, WA (US);
David Abzarian, Kirkland, WA (US);
Harish S. Kulkarni, Redmond, WA (US);
Todd L. Carpenter, Monroe, WA (US);
Cinthya R. Urasaki, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Described is a technology by which files that are hardware protected on a storage device, such as a USB flash drive, are managed on a host, including by integration with an existing file system. Each file maintained on a storage device is associated with a protection attribute that corresponds to that file's device hardware protection level. Requests directed towards accessing metadata or actual file data are processed based upon the protection attribute and a state of authentication, e.g., to allow or deny access, show file icons along with their level of protection, change levels, and so forth. Also described is splitting a file system file table into multiple file tables, one file table for each level of protection. Entries in the split file tables are maintained based on each file's current level; space allocation tracking entries are also maintained to track the space used by other split tables.