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:
Aug. 09, 2016
Filed:
Dec. 12, 2014
Globalfoundries U.s. 2 Llc, Hopewell Junction, NY (US);
David Berman, San Jose, CA (US);
Dylan J. Boday, Tucson, AZ (US);
Icko E. T. Iben, Santa Clara, CA (US);
Wayne I. Imaino, San Jose, CA (US);
Stephen L. Schwartz, Tucson, AZ (US);
Anna W. Topol, Jefferson Valley, NY (US);
Daniel J. Winarski, Tucson, AZ (US);
GLOBALFOUNDRIES INC., Grand Cayman, KY;
Abstract
According to one embodiment a method of performing a calibration correlation test for a calibration assembly includes sweeping a head module having a magnetic read sensor along a y-axis of the calibration assembly. The calibration assembly has at least one calibration trench having at least one nanoparticle at a known y-axis location in the calibration trench and the magnetic properties are known for the at least one nanoparticle. A read response of the at least one nanoparticles is obtained from the magnetic read sensor and a correlation is determined from the read response. The correlation of the read response is compared to a correlation threshold. The read response correlation is stored in memory in response to determining that the correlation of the read response is greater than the correlation threshold. When the correlation of the read response is not greater than the correlation threshold, a correlation test error is indicated.