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. 21, 2012
Filed:
Jul. 29, 2009
Xiaodong Che, Saratoga, CA (US);
Zhen Jin, Fremont, CA (US);
Michael Salo, San Jose, CA (US);
Roger Wood, Gilroy, CA (US);
Xiaodong Che, Saratoga, CA (US);
Zhen Jin, Fremont, CA (US);
Michael Salo, San Jose, CA (US);
Roger Wood, Gilroy, CA (US);
Hitachi Global Storage Technologies, Netherlands B.V., Amsterdam, NL;
Abstract
A method for characterizing a magnetic-recording system for the presence of adjacent-track interference and far-track interference. The method includes writing a plurality of repeating pulse-waveforms on a data track of a magnetic-recording disk at a write element of a magnetic-recording head. The method further includes reading a plurality of read-back signals from the magnetic-recording disk over a band of pseudo-data tracks offset from the data track by corresponding pseudo-data-track offsets in a radial direction of the magnetic-recording disk at a read element of the magnetic-recording head. In addition, the method includes displaying a magnetic-recording-signature map synthesized from the read-back signals from the magnetic-recording disk.