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:
May. 15, 2007
Filed:
Mar. 15, 2004
Applicant:
Syunji Usui, Fukushima, JP;
Inventor:
Syunji Usui, Fukushima, JP;
Assignee:
D&M Holdings Inc., Kawasaki-shi, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 21/08 (2006.01); G11B 19/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The control section determines the rotational direction and the rotational speed of the operation discal unit based on the first pulse signal from the first optical sensor section. When determines that the operation discal unit starts rotating in the reference rotational direction after a pause of at least predetermined period of time, the control section controls the motor to rotate the discal unit temporarily at a speed higher than the reference rotational speed.