Method and apparatus for operating a tape storage device

摘要

In a method for operating a tape storage device comprising a tape head for reading and/or writing data from/to a tape in the tape storage device, a first tape skew value concerning a skew of the tape is determined and the first tape skew value is converted into a first skew control signal by means of a skew feedback controller. A second tape skew value concerning the skew of the tape is determined, and the second tape skew value is converted into a second skew control signal by a feed-forward controller. At least one compensation signal for the second skew control signal is determined, and at least one of a rotational orientation of the tape head and a tape motion direction of the tape is controlled dependent on the second skew control signal and the compensation signal in case the first skew control signal fails.

主权项

1. Apparatus for operating a tape storage device, comprising:
a first tape skew determination unit configured to provide a first tape skew value concerning a skew of a tape in the tape storage device; a second tape skew determination unit configured to provide a second tape skew value concerning the skew of the tape; an actuator for adjusting one or more of:
a rotational orientation of a tape head of the tape storage device, which tape head is provided for reading and/or writing data from/to the tape, anda motion direction of the tape; a skew feedback controller for converting a deviation of the first tape skew value from a reference skew value into a first skew control signal for controlling the actuator; a feed-forward controller for converting the second tape skew value into a second skew control signal for controlling the actuator; and a compensator for determining at least one compensation signal for the second skew control signal.