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:
Aug. 21, 2007
Filed:
Sep. 06, 2005
Hiroki Ohtsu, Kanagawa, JP;
Hiroki Ohtsu, Kanagawa, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
An apparatus for transporting a magnetic tape includes a writing head, a unit for generating pulse signal, a reading head and a unit for calculating transport speed. The writing head has at least two parallel and linear magnetic gaps spaced a predetermined distance in a tape transport direction. The unit for generating pulse signal cyclically sends a pulse signal to the writing head to write a magnetic pattern corresponding to the magnetic gaps on the magnetic tape. The reading head detects the magnetic pattern to generate a resulting pulse signal. The unit for calculating transport speed calculates a transport speed of the magnetic tape based on the pulse signal sent by the reading head. The unit incorporates a first time interval which is obtained from two parallel and linear pattern components within a magnetic pattern, and a second time interval obtained from adjacent magnetic patterns.