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:
Oct. 21, 2008
Filed:
Nov. 22, 2006
Applicants:
Chang-ik Kang, Fremont, CA (US);
Young-hoon Kim, Cupertino, CA (US);
Hyung Jai Lee, Cupertino, CA (US);
Inventors:
Chang-Ik Kang, Fremont, CA (US);
Young-Hoon Kim, Cupertino, CA (US);
Hyung Jai Lee, Cupertino, CA (US);
Assignee:
Samsung Electronics Co., ltd., Suwon, KR;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 5/596 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hard disk drive with a circuit that provides a control signal to a voice coil motor to move a head across a disk. The circuit includes a repeatable run-out estimator in a feed forward control loop to control the movement of the head. The repeatable run-out estimator compensates for a constant bias torque disturbance in the drive.