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. 24, 1991
Filed:
Nov. 30, 1989
Tetsuji Sakurai, Oome, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
The magnetic disk apparatus having improved tracking performance, includes a head for accessing a magnetic disk which is rotated, a displacement detector, a head position controller, a table and a controller. The displacement detector detects an amount of displacement of the head from a designated track of the magnetic disk, based on a signal through the head from servo data associated with the designated track and generating displacement data from the displacement amount. The head position controller controls a position of the head in a radial direction of the magnetic disk in response to an input position control instruction. The table stores a plurality of disk-dependent displacement data. The controller reads out disk-dependent displacement data from the table in accordance with the designated track and outputting the position control instruction to the head position controller in accordance with the displacement data from the displacement detector and the disk-dependent displacement data.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile