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:
Sep. 17, 2002
Filed:
Oct. 26, 1999
Yoshio Tamaru, Tokyo, JP;
Masahiro Kiko, Chiba, JP;
Junya Endo, Tokyo, JP;
Mutsuko Ochiai, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A magnetic record/playback apparatus for continuously recording at least two tracks of data conforming to a digital recording format applied to a first magnetic tape having a first tape width onto one track formed on a second magnetic tape having a second tape width larger than the first tape width, and for reproducing the data from the second magnetic tape. This apparatus includes a fixed drum and a rotating drum adapted to be rotated relative to the fixed drum. The rotating drum has a record/playback head for recording and/or reproducing the data with respect to the second magnetic tape and an erase head for erasing the data recorded on the second magnetic tape. A plurality of grooves extending in a direction of rotation of the rotating drum are formed on the outer circumference of the rotating drum, and each of the grooves has a width of 0.21 mm±0.02 mm. Further, the head width of the erase head as measured in a direction perpendicular to the direction of rotation of the rotating drum is larger than that of the record/playback head.