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:
Sep. 18, 2012
Filed:
Jul. 09, 2009
Xiaobin Wang, Chanhassen, MN (US);
Haiwen Xi, Prior Lake, MN (US);
Yiran Chen, Eden Prairie, MN (US);
Yuan Yan, San Jose, CA (US);
Jun Zheng, Edina, MN (US);
Xiaobin Wang, Chanhassen, MN (US);
Haiwen Xi, Prior Lake, MN (US);
Yiran Chen, Eden Prairie, MN (US);
Yuan Yan, San Jose, CA (US);
Jun Zheng, Edina, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
Magnetic shift tracks or magnetic strips, to which application of a rotating magnetic field or by rotation of the strip itself allows accurate determination of domain wall movement. One particular embodiment is a method of determining a position of a domain wall in a magnetic strip. The method includes applying a rotating magnetic field to the magnetic strip, the magnetic field rotating around a longitudinal axis of the magnetic strip, and after applying the magnetic field, determining a displacement of the domain wall to a second position.