| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for synchronizing newly recorded data in a disk-based data storage system with previously recorded data. SOLUTION: A first difference between a wobble reference signal and previously recorded data is measured. Test data is written on a test track to measure a second difference between the wobble reference signal and the test data. The test data is written synchronously with a write clock. An offset value is determined by comparing the first difference and the second difference. New data is then written by using the write clock and the offset value such that the new data is synchronized with the old data. To determine the offset data, the test data can be written to the test track with a write clock calibration delay set to zero, the test data can then be read from the test track and the first difference can be subtracted from the second difference to determine the offset value for the write clock calibration delay. COPYRIGHT: (C)2003,JPO
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