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. 25, 2010
Filed:
Jan. 13, 2005
David J. Fitzgerald, Inver Grove Heights, MN (US);
Jeffrey A. Gleason, Burnsville, MN (US);
James P. Howley, Broomfield, CO (US);
Scott M. O'brien, Eagan, MN (US);
Michael P. Straub, Longmont, CO (US);
David J. Fitzgerald, Inver Grove Heights, MN (US);
Jeffrey A. Gleason, Burnsville, MN (US);
James P. Howley, Broomfield, CO (US);
Scott M. O'Brien, Eagan, MN (US);
Michael P. Straub, Longmont, CO (US);
Agere Systems Inc., Allentown, PA (US);
Abstract
A recording system employing a magneto-resistive (MR) element senses a resistance value of the MR element and generates one or more MR resistance (MRR) signal values based on the sensed MR element resistance value. The MRR signal values might be, for example, current or voltage values proportional or inversely proportional to the MR element resistance value. The MRR signal values might be employed to control one or more of: i) a unity gain bandwidth of a bias loop for the MR element, ii) an MR read head preamplifier low corner frequency, and iii) a slew rate across the MR element.