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:
May. 24, 1994
Filed:
Apr. 30, 1992
Atsushi Sato, Higashine, JP;
Kouichi Kusakari, Higashine, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A head is moved toward an IGB1 at high speed until the IGB1 is detected, and then the head is moved toward an IGB2 at low speed until the IGB2 is detected. After the IGB2 is detected, a gradually increasing inverted drive current is fed to a VCM moving the head until an inversion of a direction of movement of the head is detected. After the IGB1 is not detected, a position control of the head is performed to position the head on a reference track. Rapid positioning of the head is attained even though an external force acting on a head actuator carrying the head varies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile