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:
Mar. 04, 2014
Filed:
Sep. 29, 2011
Thomas R. Albrecht, San Jose, CA (US);
Toshiki Hirano, San Jose, CA (US);
Tetsuo Semba, San Jose, CA (US);
Xiaotian Sun, San Jose, CA (US);
Thomas R. Albrecht, San Jose, CA (US);
Toshiki Hirano, San Jose, CA (US);
Tetsuo Semba, San Jose, CA (US);
Xiaotian Sun, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A magnetic data storage system having a magnetic disk having burst patterns for providing a position error signal (PES) wherein each magnetic burst pattern is offset from an adjacent burst pattern by ¼ track pitch. All of the magnetic bits of the burst patterns can be unipolar magnetized, and the bits of each burst pattern can be aligned with one another in radial and circumferential direction. The magnetic media can be a bit patterned media wherein the magnetic bits of the burst patterns are magnetically isolated portions separated by non-magnetic spaces or non-magnetic material.