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:
Nov. 08, 2016
Filed:
Jul. 31, 2009
Applicant:
Tatsuya Murata, Tokorozawa, JP;
Inventor:
Tatsuya Murata, Tokorozawa, JP;
Assignee:
Almedio Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 19/10 (2006.01); G11B 7/26 (2006.01); G11B 19/12 (2006.01); G11B 7/0037 (2006.01); G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
G11B 7/265 (2013.01); G11B 7/268 (2013.01); G11B 19/10 (2013.01); G11B 19/12 (2013.01); G11B 7/0037 (2013.01); G11B 2007/0016 (2013.01);
Abstract
An optical disk device which quickly detects that a transparent disk is loaded is provided. When an optical disk is loaded, a drive controller of an optical disk device drives a spindle motor and checks existence of an optical disk based on a driving result. In addition, the drive controller drives an optical pickup to apply a focus control, to detect whether or not focusing is possible. When it is determined from the driving result that there is an optical disk and that focus is not possible, the drive controller judges that the optical disk (D) is a transparent disk.