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:
Jan. 30, 2001
Filed:
Mar. 17, 1998
Applicant:
Inventors:
Ken Tamanoi, Kanagawa, JP;
Masakazu Taguchi, Kanagawa, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/60 ;
U.S. Cl.
CPC ...
G11B 5/60 ;
Abstract
An auxiliary magnetic layer for generating a reproduction magnetic field which can be positive or negative in accordance with the front and rear edges of a reproduction waveform is provided on the opposite side of the magnetic layer to the substrate for recording and reproducing data. Consequently, a magnetic field which has an advantageous polarity to each of the front and rear edges of the reproduction waveform functions and both edges can have steep inclinations, which enhances the quality of the reproduction signal.