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:
Jan. 28, 2003
Filed:
Aug. 30, 2000
Roberto Alini, Pleasonton, CA (US);
Quocdzung T. Lam, San Jose, CA (US);
Xiaokun Liu Chew, San Jose, CA (US);
Mark McCornack, Los Gatos, CA (US);
David Joseph Bezinque, Felton, CA (US);
Tehri Lee, San Jose, CA (US);
Su Dang Le, San Jose, CA (US);
Axel Alegre de La Soujeole, Scotts Valley, CA (US);
Gilles Denoyer, Campbell, CA (US);
Other;
Abstract
A method is disclosed for controlling the write head of a magnetic disk storage device. The method includes sinking current from the first terminal of the write head and sourcing current to the second terminal of the write head substantially simultaneously with sinking current from the first terminal so that a first steady state voltage level appears on the first terminal of the write head and a second steady state voltage level appears on the second terminal thereof that are approximately at a midpoint between a high reference voltage level and a low reference voltage level. The common mode voltage of the write head is substantially constant over time.