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:
Feb. 13, 1990
Filed:
Jan. 06, 1987
Applicant:
Inventors:
Keiichi Komatsu, Katsuta, JP;
Shinji Ozaki, Katsuta, JP;
Hikaru Masui, Katsuta, JP;
Ken Kubo, Tokyo, JP;
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Video Engineering, Inc., Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
369 13 ; 360114 ; 350-67 ;
Abstract
An optical magnetic recording and reproducing apparatus and method including an optical beam scanner for scanning a recording medium with an optical beam and forming a track having a predetermined angle with respect to the traveling direction of the recording medium, a magnetic field applying arrangement for applying the magnetic field onto the recording medium, and optical beam generator for generating the optical beam.