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:
Jun. 22, 2004
Filed:
Feb. 03, 2000
Sony Corporation, Tokyo, JP;
Abstract
The object of the present invention is to propose an optical disk driving apparatus, an optical disk driving method and an optical disk apparatus capable of reducing the occurrence of disturbance to focus servo control and tracking servo control. In the optical disk driving apparatus, a tilt driving section ( ) is provided with waveform shaping unit for shaping a driving current waveform driving a tilt motor ( ) for changing the angle of an optical pickup ( ) with respect to the rotating surface of an optical disk. Thus, it is possible to prevent the vibration of the optical pickup ( ), to reduce disturbance derived from the vibration of an objective lens ( ) to focus control and tracking control and to suppress mechanical noise while tilt driving is being performed. Besides, since there is no need to provide a tilt sensor, the optical pickup ( ) can be made small in size and therefore, the smaller-sized optical disk driving apparatus can be provided.