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Disk drive using off-track margin to obtain optimal performance parameters
Disk drive using off-track margin to obtain optimal performance parameters
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机译:使用偏离磁道裕量的磁盘驱动器以获得最佳性能参数
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摘要
Adaptive channel optimization in a disk drive is achieved by selecting a track of the recording medium and then writing a first data pattern to opposite sides of the selected track. The first data pattern is written a certain percentage off-track in relation to the centerline of the selected track. A second data pattern is then written directly on the selected data track and the off-track margin is determined as a function of how far the recording head can be positioned away from the center of the selected track during reading of the second data pattern while meeting a specified error rate. The off-track margin test is repeated iteratively using a combination of channel variable settings in order to find a set of variable settings which provides an optimal performance criteria for the drive.
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