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:
Feb. 21, 1995
Filed:
May. 18, 1993
Phillip L Barrett, Redmond, WA (US);
Scott D Quinn, Kirkland, WA (US);
Ralph A Lipe, Seattle, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
A method and system for updating data stored on a computer storage device are provided. The data is contained in records or entries. Each record or entry has a primary pointer and an indicator. The indicator initially has each bit set to a predefined bit value. When data is to be updated (and thus, the record or entry containing the data is to be superseded), at least one bit of the indicator is changed from the predefined bit value to another bit value to point to the new record or entry and to indicate that the data in the new record or entry is an update of the data in the superseded record or entry. This method and system are especially suitable to be used in a write-once computer storage device.