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:
Feb. 09, 2010
Filed:
Sep. 18, 2008
Peter M. Baumgart, San Jose, CA (US);
John T. Contreras, Palo Alto, CA (US);
Luiz Franca-neto, Sunnyvale, CA (US);
Bernhard E. Knigge, San Jose, CA (US);
Richard Kroeker, Morgan Hill, CA (US);
Gurinder P. Singh, San Jose, CA (US);
Peter M. Baumgart, San Jose, CA (US);
John T. Contreras, Palo Alto, CA (US);
Luiz Franca-Neto, Sunnyvale, CA (US);
Bernhard E. Knigge, San Jose, CA (US);
Richard Kroeker, Morgan Hill, CA (US);
Gurinder P. Singh, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
In a method of pre-contact detection and active damping of air bearing vibrations in a hard disk drive, a slider is isolated from ground. The slider is then capacitively coupled with a hard disk of the hard disk drive via a thermal fly-height control (TFC) heating element. An alternating current (AC) signal is applied to the slider via the TFC heating element to control the amplitude of the slider.