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. 18, 2011
Filed:
Jun. 11, 2007
Curtis V. Macchioni, Livermore, CA (US);
Jonas A. Goode, Lake Forest, CA (US);
Matthew R. Gibbons, San Jose, CA (US);
Tao Pan, San Jose, CA (US);
Andrei F. Khapikov, Santa Clara, CA (US);
Curtis V. Macchioni, Livermore, CA (US);
Jonas A. Goode, Lake Forest, CA (US);
Matthew R. Gibbons, San Jose, CA (US);
Tao Pan, San Jose, CA (US);
Andrei F. Khapikov, Santa Clara, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A disk drive is disclosed having a disk, and a head actuated over the disk, the head comprising a magnetoresistive (MR) element. Control circuitry within the disk drive sets an operating bias current for the MR element by computing a target voltage for the MR element, applying a bias current to the MR element, measuring a voltage across the MR element corresponding to the bias current, and adjusting the bias current applied to the MR element until the measured voltage substantially equals the target voltage.