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:
Jun. 07, 1988
Filed:
Oct. 31, 1986
Applicant:
Inventors:
Masatoshi Yonekubo, Suwa, JP;
Shigeru Kogure, Suwa, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 46 ; 369 45 ; 369 13 ; 250201 ; 360 59 ;
Abstract
An apparatus for reading data to and from a moving magneto-optical recording medium includes a carriage which is moved across data tracks contained in the medium. Optics for focusing a spot of light on the medium and a mechanism for fine tracking of the spot on a selected track are carried on the carriage and are movable independently of the carriage in response to separately amplified servo signals which are derived from light which is reflected from the spot of light on the data-containing track.