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:
Apr. 25, 1995
Filed:
Aug. 02, 1993
Applicant:
Inventor:
Tsuyoshi Tsujioka, Osaka, JP;
Assignee:
Sanyo Electric Co., Ltd., Moriguchi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369110 ; 369107 ; 369 13 ; 369288 ; 365122 ;
Abstract
A method of reproducing information recorded on an optical recording medium includes the steps of directing a first reading optical beam and a second reading optical beam onto a recording portion on the optical recording medium to obtain a first electric output signal corresponding to the first beam interacting with the optical recording medium and a second electric output signal corresponding to the second beam interacting with the optical recording medium, and performing a non-linear operation and a linear-operation by using these first and second output signals, thereby obtaining an improved reproduced output signal.