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:
Mar. 28, 2000
Filed:
Jan. 21, 1997
Applicant:
Inventors:
Hiroshi Oinoue, Tokyo, JP;
Tsutomu Mochizuki, Chiba, JP;
Assignee:
Sony Corporation, , JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 4423 ; 369 4437 ; 369 58 ; 369 4441 ; 369 4429 ;
Abstract
An optical pickup in an optical disc device configured for recording and/or reproducing signal on or from an optical disc. The optical pickup is configured for setting the orientation of a bending mirror directing the optical path of a light beam radiated from a light source towards the optical disc so that the optical path between the reflecting surface of the mirror and the photodetector is approximately 45 relative to the recording track of the optical disc. With the above configuration of the optical pickup, focusing error signals and tracking error signals of plural discs of different types can be detected by a common photodetector.