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:
Jul. 07, 1998
Filed:
Feb. 28, 1996
Masataka Shitara, Kawasaki, JP;
Hideaki Tanaka, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A control unit, such as an MPU in an external storage device or external storage control device, detects, on the basis of a Read or Write command, whether or not an internal reading or writing velocity is changed from one value to another value according to a zone of a storage medium. When the velocity is changed, the control unit calculates an optimal buffer full ratio or buffer empty ratio suitable for the velocity and sets the ratio in a data buffer control unit. Moreover, the control unit, such as an MPU, determines whether or not data requested by the Read or Write command resides over different zones in the storage medium. When the data resides over different zones, the control unit calculates one zone containing a majority of the requested data, works out an optimal buffer full ratio or buffer empty ratio according to a medium transfer rate associated with the zone, and sets the ratio in the data buffer control unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile