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:
Apr. 14, 1998
Filed:
Mar. 09, 1993
Kevin L Miller, Loveland, CO (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A system for calibrating a magnetic tape drive for accurate movement of a tape head or drive motor accommodates mechanical and manufacturing inaccuracies. Motion is corrected through sensing variations from desired position or speed through operation of the drive in one continuous motion. These values may then be processed or filtered to remove non-repeatable effects and thus achieve appropriate correction in operation. The values may be written to a ROM in tabular format correlating position correction values with track number or adjusting speed coefficients for use during operation. For the tape head, actual position values are sensed in one substantially continuous motion of the tape head through a move command for faster calibration.