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:
Oct. 10, 1995
Filed:
May. 09, 1991
Erik Solhjell, Oslo, NO;
Tandberg Data A/S, Oslo, NO;
Abstract
In a magnetic layer storage having a magnetic head positionable relative to a storage medium, a reference storage medium produced with high precision is employed for the individual calibration of the storage tape drive, and particularly a positioner means thereof. This reference storage medium carries a track pattern adapted to the respective application and whose exact position is known. During the test run of each and every individual tape drive, this reference storage medium is read, and the read signals are evaluated in order to identify offset of actual position of the magnetic head from its absolute position defined by the reference storage medium. Individual correction factors can be acquired from the relationship of the absolute position to the actual position, these correction factors being stored in the control electronics and being employed during normal operation for correcting the tolerances of the positioner means or of the magnetic head itself.