Dynamically controlling magnetoresitive bias

摘要

Magnetoresistive (MR) bias is dynamically controlled in a tape drive using a processor device. Median tape head amplitude is monitored during a calibration operation, as measured across all tracks of the tape head, against predetermined thresholds of the tape drive for determining if the median tape head amplitude is below the threshold value. Upon determining the median tape head amplitude is below the threshold value during the calibration operation, a reference MR bias and a MR bias range is dynamically adjusted, during the calibration operation, for increasing the median tape head amplitude.

主权项

1. A method for controlling magnetoresistive (MR) bias in a tape drive using a processor device, the method comprising:
monitoring during a calibration operation the median tape head amplitude, as measured across all tracks of the tape head, against predetermined thresholds of the tape drive for determining if the median tape head amplitude is below the threshold value; and upon determining the median tape head amplitude is below the threshold value during the calibration operation, dynamically adjusting, during the calibration operation, a reference MR bias and a MR bias range for increasing the median tape head amplitude.