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:
Sep. 21, 1993
Filed:
Oct. 31, 1989
Applicant:
Inventors:
Phillip L Barrett, Redmond, WA (US);
Scott D Quinn, Kirkland, WA (US);
Ralph A Lipe, Seattle, WA (US);
Assignee:
Microsoft Corporation, Redmond, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395600 ; 364D / ; 3642822 ; 3642823 ; 3642831 ; 3642832 ; 3649662 ; 3649743 ; 3649745 ;
Abstract
A method and apparatus for storing files on a computer file storage device. The files are organized into an hierarchical directory structure. The directory structure comprises directory entries and file entries. The file entries and directory each contain a primary and a secondary pointer. The secondary pointer is initially set to a predefined value. When an entry is to be updated, the secondary pointer is overridden with a value that points to the superseding entry. This directory structure is especially suitable to be used in a write-once computer memory.