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:
Jun. 22, 1999
Filed:
Jun. 25, 1997
Daniel John Sokolov, Rochester, MN (US);
Western Digital Corporation, Irvine, CA (US);
Abstract
A method is practiced in a disk drive in which a cache is divided into segments each having a segment priority. The method provides for managing the segment priority. The drive has an intelligent interface for communicating with a host, and a magnetic disk. The cache employs a cache control structure including a cache array with a cache array entry. There is a cache array entry for each one of the number of segments. The method comprises the steps of: maintaining the cache array entry wherein each cache array entry classifies a segment by a cache access type, wherein the cache access type is selected from a plurality of access types including sequential and random; and determining whether to change the scan priority of each segment based on the cache access type.