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:
Jul. 27, 2021
Filed:
Mar. 20, 2019
International Business Machines Corporation, Armonk, NY (US);
Marcus Breuer, Dalheim, DE;
Frank Krick, Ockenheim, DE;
Tim Oswald, Gimbsheim, DE;
Bernd Freitag, Partenheim, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, computer system, and computer program product for determining head wear of magnetic tape head elements of tape drives during operation. The method may include receiving a first calibration parameter for a first tape head element at a first time. Calibration parameter for the first tape head element may be compared with a reference parameter. Determination may be made whether to remove the first tape head element from service or generate a warning, based on a result of the comparison. Method may include generating the first calibration parameter by calculating midpoint bias voltage for the first tape head element as a function of bias current and head resistance. The first calibration parameter for the first tape head element may be bias current parameter or bias resistance parameter. The first calibration parameter for the first tape head element may be less than, equal to, or greater than the reference parameter.