Magnetic tape device capable of determining the vertical position of magnetic head based on pattern combinations comprising servo band identifiers
AssigneeQuantum LTO Holdings, LLC
InventorsTurguy Goker, Laurie J. Mintz
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Abstract
A magnetic tape and servo elements of a magnetic head for reading and writing to the magnetic tape can ascertain servo band signals from different servo bands that are vertically aligned and adjacent to one another. When operating in a write or read mode, at least two servo elements can be activated to respond to a write/read operation based on a determined position across a width of the servo bands in the magnetic tape. The determined position is based on various pattern combinations from different servo band identifiers from the servo band signals.
Claims12
A magnetic tape comprising:
- a plurality of servo bands comprising corresponding servo band signals to be read by servo elements of a magnetic head, wherein the plurality of servo bands comprises servo band frames that are vertically aligned with respect to one another;
- and
- a plurality of pattern combinations comprising servo band identifiers of the corresponding servo band signals from different servo bands of the plurality of servo bands;
- wherein a pattern combination of the plurality of pattern combinations indicates a vertical position that is associated with the servo elements of the magnetic head among the plurality of servo bands when performing at least one of:
- a write operation or a read operation to the magnetic tape, wherein the pattern combination is formed by a first servo band identifier and a second servo band identifier corresponding to different servo bands, respectively, and matches a stored pattern combination to receive write data of the write operation, or read data of the read operation, at a data band of the magnetic tape.
An apparatus of a magnetic tape, comprising
- a magnetic head comprising a first servo element configured to read a first servo signal from a first servo band of the magnetic tape, and a second servo element configured to read a second servo signal from a second servo band of the magnetic tape;
- a processing device, coupled to the magnetic head, configured to determine a vertical location of the magnetic head among a plurality of servo bands along a width of the magnetic tape based on a pattern combination formed by servo band identifiers from the first servo signal and the second servo signal, and generate at least one of:
- a write operation, or a read operation, based on the vertical location of the magnetic head;
- and
- wherein the first servo band and the second servo band comprise different servo bands with longitudinal position (LPOS) words continuously along the magnetic tape, wherein the LPOS words each comprise a longitudinal position portion with the servo band identifiers of the corresponding servo band signals for forming the pattern combination.
Dependencies are inferred from the claim text.