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:
Oct. 27, 2009
Filed:
May. 27, 2004
Kenji Urushihara, Yokohama, JP;
Yuji Yamaguchi, Naka-gun, JP;
Yoshihiko Maeda, Ayase, JP;
Hiroto Nishida, Kahoku-gun, JP;
Kenji Urushihara, Yokohama, JP;
Yuji Yamaguchi, Naka-gun, JP;
Yoshihiko Maeda, Ayase, JP;
Hiroto Nishida, Kahoku-gun, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention provides a disc drive apparatus capable of identifying a disc (12 cm) having a small data area (8 cm) in central as same as an ordinary 12 cm disc. The apparatus having a light receiving unitand a push switch. The unitis arranged in a position where the unitdetects the disc having the small data area in central when the switchdetects the same, and where the unitdoes not detect a disc (12 cm) having a hole (8 cm) in central when thedetects the same. The apparatus also has an disc identifier for identifying type of the disc based on the detected results of the light receiving units and/or the push switches.