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:
May. 01, 2018
Filed:
May. 12, 2017
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
Tsuyoshi Miyamura, Yokohama, JP;
Kazuhiro Tsuruta, Sagamihara, JP;
Eiji Ogura, Yokohoma, JP;
Tomoko Taketomi, Yamato, JP;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 21/02 (2006.01); G11B 5/588 (2006.01); G11B 5/592 (2006.01); G11B 15/473 (2006.01); G11B 5/008 (2006.01); G11B 15/18 (2006.01); G11B 5/584 (2006.01);
U.S. Cl.
CPC ...
G11B 5/588 (2013.01); G11B 5/00813 (2013.01); G11B 5/584 (2013.01); G11B 5/5921 (2013.01); G11B 5/5922 (2013.01); G11B 15/1841 (2013.01); G11B 15/473 (2013.01);
Abstract
Some embodiments of the present invention logically eliminate an end region of a user-data area of a magnetic storage tape during formatting (or re-formatting) of the tape, if the position error signal (PES) variance corresponding to the end region exceeds a threshold. An adjacent region, having a PES variance less than the threshold is designated as a new end region, thereby shortening the user-data area of the tape and extending its usable life.