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. 25, 2005
Filed:
Nov. 06, 2002
Applicants:
Wayne Leung Cheung, San Jose, CA (US);
Stephen Alan Jove, Hollister, CA (US);
Kevin Roy Vannorsdel, San Jose, CA (US);
Inventors:
Wayne Leung Cheung, San Jose, CA (US);
Stephen Alan Jove, Hollister, CA (US);
Kevin Roy Vannorsdel, San Jose, CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 509 ;
U.S. Cl.
CPC ...
Abstract
A method and apparatus for providing matched differential MR biasing and pre-amplification. Tightly matched and well centered low-level MR bias voltage is provided directly to the sensing element for controlled input-impedance differential pre-amplification without common-mode voltage level control with loops.