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. 07, 1998
Filed:
Oct. 13, 1995
Applicant:
Inventors:
Toshiro Aizawa, Ebina, JP;
Shigemitsu Higuchi, Fujisawa, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 7715 ; 360 7713 ;
Abstract
Recording areas for tracking on which specific servo patterns are recorded are provided preceding data tracks on which data is to be recorded on a recording tape scanned by a helical scan system. The data tracks and recording areas for tracking are recorded at different azimuths. At the time of a playback operation, etc., the specific patterns in the recording areas for tracking are played back by the helical scan system and tracking is performed by using the playback timing.