Patent ID: 9564161
Date: 2017-02-07
CPC Classifications: G11B

Claim:
1. A method for controlling a lateral position of a tape head of a magnetic tape drive, the method comprising: determining a first servo signal by reading position marks from a first servo band on a magnetic tape using a first sensor, determining a second servo signal by reading position marks from a second servo band on the magnetic tape using a second sensor, delaying the first servo signal relative to the second servo signal by a delay to create a delayed second servo signal, wherein the delay is based on the frequency (f) of a longitudinal oscillation of the magnetic tape, calculating an average signal based on the first servo signal and the delayed second servo signal, determining a servo information from the average signal, the servo information being indicative of a deviation of the lateral position of the tape head from an ideal lateral position of the tape head relative to the magnetic tape, and controlling the tape head to adjust its lateral position such that the deviation is decreased.