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:
May. 26, 1998
Filed:
Sep. 27, 1996
Applicant:
Inventor:
Nobuaki Onagi, Tsurugashima, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 13 ; 369116 ;
Abstract
The magneto optical disc is provided with at least first and second recording layers such that the record information is recorded to the first recording layer at a vertically magnetized state thereof and is also recorded to the second recording layer at a vertically magnetized state thereof. The information recording method of recording record information to the magneto optical disc is provided with the steps of: controlling an output power of a recording light; irradiating the recording light to the record position; and applying, while irradiating the recording light to the magneto optical disc, to the record position, an external magnetic field.