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:
Oct. 28, 2008
Filed:
Jun. 28, 2002
Ravisankar Pudipeddi, Sammamish, WA (US);
Eileen C. Brown, Seattle, WA (US);
Neal R. Christiansen, Bellevue, WA (US);
Ravisankar Pudipeddi, Sammamish, WA (US);
Eileen C. Brown, Seattle, WA (US);
Neal R. Christiansen, Bellevue, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Described is a method and system that manages filenames for filter drivers in a file system. The present invention includes a filter manager that handles filename queries from the filter drivers. The filter manager returns a pointer to the requesting filter driver that points to a filename information structure corresponding to the type of filename requested. The filter manager also manages a cache of filename information structures that include information that can be shared among the various filter drivers, amortizing the filename queries for filter drivers. The caching functionality of the filter manager increases the efficiency and reduces the overhead of filename queries within the file system by reducing the number of filename operations required for a file system filter driver to retrieve a desired portion of the filename.