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:
Jul. 23, 2002
Filed:
Sep. 13, 1999
Applicant:
Inventor:
Ryoji Takeuchi, Matsudo, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 ;
U.S. Cl.
CPC ...
G11B 7/00 ;
Abstract
An optical apparatus for an optical disk recording/reproducing apparatus including a recording laser light emitting device emitting a recording beam for recording data on an optical disk, a reproduction laser light emitting device provided near the recording laser light emitting device and emitting a reproducing beam for reproducing data and a reproduction photo-detector receiving and detecting reflection light of the reproducing beam. By providing light emitting devices dedicated to the recording beam and the reproducing beam, respectively, it is possible to reproduce data while recording the data.