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:
Aug. 17, 1993
Filed:
Jul. 19, 1991
Kenji Shimozawa, Mitaka, JP;
TEAC Corporation, , JP;
Abstract
In an optical head in a magneto-optical disk storage, an angle of a polarized light surface of a laser beam can be adjusted so that the strength of a tracking error signal can be maximized. Therefore, the optical head and the magneto-optical disk storage having the optical head is applicable to both p-polarized light type and s-polarized light type magneto-optical disks. Hereupon, the laser beam corresponding to the p-polarized light type magneto-optical disk transmits parallel to the grooves on the magneto-optical disk. On the other hand, the laser beam corresponding to the s-polarized light type magneto-optical disk transmits vertical to the grooves on the magneto-optical disk. Thus, according to the present invention, just one optical head can handle both types of magneto-optical disks.