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:
Apr. 21, 2009
Filed:
Oct. 28, 2004
Antonius Leonardus Johannes Dekker, Eindhoven, NL;
Antonius Leonardus Johannes Dekker, Eindhoven, NL;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
The invention relates to disc drive mechanism () which comprises an actuator () controlling a radial movement of a lens (). An actuator controller () generates an actuator control signal which is fed to the actuator (). An activation time processor () determines an amplitude variation characteristic of the actuator control signal. Specifically, the activation time processor () determines how the amplitude varies as a function of the rotation angle. The activation time processor () determines an activation time for a position change actuator signal component which causes the actuator () to move the lens () to jump to a different track. The position change actuator signal component is added to the actuator control signal in the actuator controller () thereby generating a combined actuator control signal which both tracks the disc and effectuates a jump. The activation time is selected such that the dynamic range of the actuator control signal is reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile