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:
Nov. 21, 1995
Filed:
Dec. 17, 1993
Applicant:
Inventors:
Timothy A Madsen, Bloomington, MN (US);
Russell J Machelski, Bloomington, MN (US);
Assignee:
Seagate Technology, Inc., Scotts Valley, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 51 ; 360 68 ;
Abstract
A DC offset voltage is added to the analog timing signal in a peak detection data recovery circuit to cancel the timing asymmetry from a magnetoresistive head signal. An AC timing asymmetry cancellation circuit uses a charge pump, buffer amplifier and resistor divider to produce the proper DC offset voltage automatically.