Method and apparatus for recording and reproducing recording medium
AssigneeLG Electronics Inc.
InventorDae Young Kim
Life of this patent
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Abstract
A recording/reproducing method and apparatus for an optical recording medium that is adapted to accurately detect a wobbling signal from an optical recording medium having recording tracks defined by wobbled grooves independently of a driving condition of the optical recording medium. In the method, a wobbling signal is picked up from a wobbled part of the recording medium. A frequency of a wobbling signal being picked up from the wobbled part is detected, and a frequency band of filtering means for detecting the wobbling signal from the picked-up signal is controlled in accordance with the detected frequency.
Claims20
A method of recording and reproducing a recording medium having tracks defined by wobbled grooves, comprising the steps of:
- (A) picking up a wobbling signal from a wobbled part in the recording medium;
- (B) detecting a frequency of the wobbling signal being picked up from the wobbled part;
- and
- (C) controlling a frequency band of filtering means for detecting the wobbling signal in accordance with the detected frequency.
An apparatus of recording and reproducing a recording medium having tracks defined by wobbled grooves, comprising:
- a pickup for picking up a signal from the recording medium;
- frequency detecting means for detecting a frequency of a wobbling signal picked up from a wobbled part in the recording medium by the pickup;
- filtering means for filtering an output signal of the pickup to detect the wobbling signal;
- and
- a filter controller for responding an output signal of the frequency detecting means to control a filtering frequency band of the filtering means.
Dependencies are inferred from the claim text.