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:
Jun. 17, 2003
Filed:
Nov. 17, 1999
Tadashi Hanagata, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A magnetic tape apparatus prevents dirt from being deposited on a magnetic tape even when the tape is repeatedly moved in a short interval. An operation monitoring unit calculates tape position from information supplied from a tape transport drive circuit and measures tape position from a previously stopped position as a reference point. The operation monitoring unit updates the reference point into a presently stopped position if the tape has moved from the reference point beyond a predetermined range and stopped, accumulates the number of times the tape has been stopped if the tape has moved from the reference point and stopped within the predetermined range, and instructs a control unit to transport the tape in a transported range greater than the predetermined range to bring an area on the tape into contact with a tape cleaner if the accumulated number of times exceeds a predetermined number of times.