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. 03, 2015
Filed:
Jun. 20, 2011
Takashi Tani, Yokohama, JP;
Yoshinori Kajiwara, Yaita, JP;
Wataru Terui, Yokohama, JP;
Takahiro Otomo, Yaita, JP;
Takashi Tani, Yokohama, JP;
Yoshinori Kajiwara, Yaita, JP;
Wataru Terui, Yokohama, JP;
Takahiro Otomo, Yaita, JP;
Pioneer Digital Design and Manufacturing Corporation, Kanagawa, JP;
Abstract
A wobble determining apparatus is provided with: a calculating device for calculating (i) a first time required until reaching a number of revolutions of a motor which allows a predetermined linear velocity, and (ii) a second time required to move an optical head to a position which allows the predetermined linear velocity, on the basis of the number of revolutions of the motor and the position of the optical head; a judging device for judging whether to keep the optical head in accordance with the calculated first time and the calculated second time; and a controlling device for controlling a moving device not to move the optical head if it is judged to keep the optical head, and for controlling the moving device to move the optical head to the position which allows the predetermined linear velocity if it is judged not to keep the optical head.