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.

Date of Patent:
Jun. 23, 2015

Filed:

May. 21, 2014
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Reed A. Hancock, Tucson, AZ (US);

Randy C. Inch, Tucson, AZ (US);

Eiji Ogura, Yokohama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 15/48 (2006.01); G11B 15/46 (2006.01); B65H 59/38 (2006.01); G11B 15/32 (2006.01); G11B 5/584 (2006.01);
U.S. Cl.
CPC ...
G11B 15/32 (2013.01); G11B 5/584 (2013.01); G11B 15/46 (2013.01);
Abstract

A method according to one embodiment includes computing a radius value of a tape on an outgoing reel during unwinding of the tape from the outgoing reel, adjusting the computed radius with an offset calculated from a direct measurement of velocity from the tape position, and outputting the adjusted computed radius. A method according to another embodiment includes computing a radius value of a tape on an incoming reel during winding while the tape is being wound onto the incoming reel, adjusting the computed radius with an offset calculated from a direct measurement of velocity from the tape position, and outputting the adjusted computed radius.


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