METHOD FOR REDUCING THE NOISE IN A WOBBLE SIGNAL

The present invention relates to a method and a circuit for recovering information contained in a wobbled track on an optical storage medium. One aim of the invention is to describe a method within an appliance for reading from and/or writing to optical storage media, which can correct disturbing da...

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Bibliographic Details
Main Author BUECHLER, CHRISTIAN
Format Patent
LanguageEnglish
French
German
Published 16.07.2008
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:The present invention relates to a method and a circuit for recovering information contained in a wobbled track on an optical storage medium. One aim of the invention is to describe a method within an appliance for reading from and/or writing to optical storage media, which can correct disturbing data signal components in the wobble signal even when the swept frequency and the lowest signal frequency are close to one another. According to the invention, this object is achieved in that the signals from two detector halves of a photodetector which is used for reading the data contained in a track on an optical storage medium are provided with weighting factors which are adjusted dynamically during operation of the appliance. In order to adjust the weighting factors, the data signal component in the wobble signal is linked to a disturbance signal from a disturbance signal generator.
Bibliography:Application Number: EP20020794747