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. 14, 1995
Filed:
Oct. 13, 1994
Applicant:
Inventors:
Mark E Nash, Lyons, CO (US);
Ronald R Kennedy, Fort Collins, CO (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 46 ; 360 41 ;
Abstract
A method and apparatus for using a varying amplitude data signal from a data storage medium such as a magnetic disk or magnetic tape to calibrate the gain of the data signal amplifier to an optimal fixed gain. At initialization, amplified data signal peaks are detected over a data region of the data storage medium. The amplified signal peaks are compared to a predetermined reference. The signal amplifier gain is adjusted until only a few amplified signal peaks exceed the reference. The amplifier gain is then fixed at the final adjusted value.