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. 25, 2000
Filed:
Jan. 17, 1997
Applicant:
Inventors:
Assignee:
Matsushita Electrical Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 13 ; 360 59 ; 360114 ;
Abstract
In a magneto-optical disc apparatus using an initializing magnetic field generator, the magnetic field generator including a permanent magnet slides on or and floats above a surface of the magneto-optical disc for applying a magnetic field at a position on a track and precede to or follow a light beam spot irradiated by an optical head.