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:
Feb. 26, 2013
Filed:
Feb. 04, 2010
Hironori Nakahara, Tokyo, JP;
Yoshihiro Kiyose, Tokyo, JP;
Toshiya Matozaki, Tokyo, JP;
Nobuo Takeshita, Tokyo, JP;
Hironori Nakahara, Tokyo, JP;
Yoshihiro Kiyose, Tokyo, JP;
Toshiya Matozaki, Tokyo, JP;
Nobuo Takeshita, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An optical disc device compatible with optical discs of different types having different track pitches, having a light detecting means () disposed in the path of diffracted light from the recording tracks on the optical disc (), on which a light beam from a light emitting section () is incident. During the loading of the optical disc, the optical disc device discriminates the type of optical disc from the detection output of the light detecting means () and the positional relation between the optical disc () and the light detecting means (). A simple structure thus enables the optical disc type to be discriminated.