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. 14, 1995
Filed:
Mar. 12, 1993
Applicant:
Inventors:
Robert Youngquist, White Bear Lake, MN (US);
Theodore Schwarz, Woodbury, MN (US);
Richard Molstad, St. Paul, MN (US);
Tim Ngo, Maplewood, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 66 ;
Abstract
A digital recording system utilizing a magnetoresistive transducer in a magnetic recording head. The system measures the amplitude of an output signal, E.sub.o, from the transducer for various bias currents as a recorded magnetic media passes by the head. The system then determines the bias current for which the output signal, E.sub.o, is maximized and multiplies that bias current by a suitable factor. The system then operates at the calculated bias current level, thereby minimizing the error rate of the system.