Importance

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Abstract

A method for generating a center error signal in an optical storage system, as well as an optical storage system, is disclosed. Through the use of the method and system in accordance with the present invention, a decrease in manufacturing costs is achieved since very precise and expensive mirrors and/or photo detectors are not needed. A first embodiment of the invention includes a method for generating a center error signal in an optical storage system, the optical storage system comprising a tracking coil and an optical pick up unit, the optical pick up unit including a light beam. The method comprises the steps of sensing a voltage by a tracking coil, providing the voltage to a center error generation circuit, generating a center error signal from the center error generation circuit based on the voltage and utilizing the center error signal to center the light beam. A second embodiment of the invention includes an optical storage system. The optical storage system comprises an optical pick up unit, the optical pick up unit including a light beam, a tracking coil coupled to the optical pick up unit, the tracking coil comprising means for sensing a voltage, a center error generation circuit coupled to the tracking coil, means for providing the voltage to the center error generation circuit wherein a center error signal is generated based on the voltage; and means for utilizing the center error signal to center the light beam.

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First Claim