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. 07, 2012
Filed:
Aug. 28, 2009
Applicants:
Eric Rolf Christensen, Tucson, AZ (US);
W. Stanley Czarnecki, San Jose, CA (US);
Inventors:
Eric Rolf Christensen, Tucson, AZ (US);
W. Stanley Czarnecki, San Jose, CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 27/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of evaluating the performance of a magnetic recording system, comprising measuring a first set of finite impulse response filter tap values at time t, measuring a second set of finite impulse response filter tap values are measured at time t, where time tis subsequent to time t, and calculating an actual loss parameter using the first set of tap values and the second set of tap values. The method then compares the actual loss parameter with a total effective loss threshold.