| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new and improved track error measurement and recovery. Ž<P>SOLUTION: The method for measuring a track value is shown as follows: the track value relates to mis-registration of a track, and is compared with a limit of the track value (430) to evaluate conditions of the track. In an example of embodiment, the track value is determined as a function of many position error signals from previous wedges within the track (410, 420). The track value and limit of the track value are used for selectively executing recovery (440). In an example of embodiment, the limit of the track value is dynamically adjusted. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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