Servo pattern for skew based tape dimensional stability compensation
AssigneeInternational Business Machines Corporation
InventorsNhan Xuan Bui, Mark Alfred Lantz, Simeon Furrer, Robert Biskeborn
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Abstract
In response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, heights of top and bottom portions of servo stripes of servo frames of the TBS patterns are adjusted to compensate for changes in a usable height of the servo stripes caused by the rotation.
Claims25
A method for a magnetic tape system, the method comprising:
- in response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, adjusting a height of a top portion of servo stripes of at least one of a first pattern and a second pattern that comprise an entirety of a TBS pattern, by a distance that is a function of an azimuth angle and an angle of rotation to compensate for changes in a usable height of the servo stripes caused by the rotation.
A tape formatting device, the tape formatting device comprising:
- a controller;
- and
- a servo write head coupled to the controller and configured to write timing-based servo (TBS) patterns on a tape, wherein adjustments to the TBS patterns have been made during manufacturing of the servo write head via operations comprising:
- in response to a rotation of the TBS patterns of a first servo band and a second servo band, adjusting a height of a top portion of servo stripes of at least one of a first pattern and a second pattern that comprise an entirety of a TBS pattern, by a distance that is a function of an azimuth angle and an angle of rotation to compensate for changes in a usable height of the servo stripes caused by the rotation.
A computer program product, the computer program product comprising a computer readable storage medium having computer readable program code embodied therewith, the computer readable program code configured to perform operations in a device, the operations comprising:
- in response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, adjusting a height of a top portion of servo stripes of at least one of a first pattern and a second pattern that comprise an entirety of a TBS pattern, by a distance that is a function of an azimuth angle and an angle of rotation to compensate for changes in a usable height of the servo stripes caused by the rotation.
A method of manufacturing a tape, the method of manufacturing comprising:
- in response to a rotation of timing-based servo (TBS) patterns of a first servo band and a second servo band, adjusting a height of a top portion of servo stripes of at least one of a first pattern and a second pattern that comprise an entirety of a TBS pattern, by a distance that is a function of an azimuth angle and an angle of rotation to compensate for changes in a usable height of the servo stripes caused by the rotation.
A method for a servo write head, the method comprising:
- configuring the servo write head to write timing-based servo (TBS) patterns on a tape, wherein adjustments to the TBS patterns have been made during manufacturing of the servo write head via operations comprising:
- in response to a rotation of the TBS patterns of a first servo band and a second servo band, adjusting a height of a top portion of servo stripes of at least one of a first pattern and a second pattern that comprise an entirety of a TBS pattern, by a distance that is a function of an azimuth angle and an angle of rotation to compensate for changes in a usable height of the servo stripes caused by the rotation.
Dependencies are inferred from the claim text.