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:
Aug. 10, 2010
Filed:
Jan. 30, 2008
Toshiaki Fukui, Daito, JP;
Toshiaki Fukui, Daito, JP;
Funai Electric Co., Ltd., Daito-shi, JP;
Abstract
A disc apparatus which enables an optical pickup to move swiftly to a target track is provided. A disc apparatus () includes an optical pickup () which irradiates an optical disc () with a laser light, a motor () which moves the optical pickup () to a target track in a radial direction of the optical disc (), and a controller () which controls the motor (). The controllerincludes a calculating means () which calculates a voltage level applied to the motor () and a recording unit () which records a reference voltage level, a corrected number of tracks, and a coefficient. The calculating means () calculates a voltage level based on the number of tracks between a track which the optical pickup is positioned over and the target track, the reference voltage level, the corrected number of tracks, and the coefficient. The controller () moves the optical pickup () widely to a position close to the target track by driving the motor () at the voltage level which is calculated by the calculating means (). Consequently, the controller () can move the optical pickup () to the target track swiftly.