Offset correction values on a data storage media
AssigneeSeagate Technology LLC
InventorBruce Douglas Buch
Life of this patent
Estimating the term…
Abstract
A memory system includes a storage medium having tracks arranged on the storage medium. The tracks include data track portions configured to store data. The tracks have a data track width and offset correction portions having a width that is greater than the data track width of the associated data track. Each offset correction portion stores one or both of positional offset correction values and timing offset correction values. The positional offset correction values are configured to correct for errors that occur in cross track positioning relative to the medium and the timing offset correction values are configured to correct for errors that occur in down track timing relative to the medium.
Claims20
An apparatus, comprising:
- a storage medium having tracks arranged on the storage medium the tracks including:
- data track portions configured to store data and having a data track width;
- and
- offset correction portions having a width in a cross-track direction that is greater than the data track width in the cross-track direction of an associated data track, each offset correction portion storing one or both of positional offset correction values and timing offset correction values, the positional offset correction values configured to correct for errors that occur in cross track positioning relative to the medium and the timing offset correction values configured to correct for errors that occur in down track timing relative to the medium.
A system, comprising:
- a storage medium having tracks arranged on the storage medium, the tracks being arranged so that even data track portions alternate with odd data track portions along a cross track direction the tracks including:
- data track portions configured to store data and having a data track width in a cross-track direction;
- and
- offset correction portions having a width in the cross-track direction that is greater than the data track width of an associated data track, each offset correction portion storing one or both of positional offset correction values and timing offset correction values, the positional offset correction values configured to correct for errors that occur in cross track positioning relative to the medium and the timing offset correction values configured to correct for errors that occur in down track timing relative to the medium, and wherein offset correction portions associated with the even data track portions and offset correction portions associated with adjacent odd data track portions are concatenated along a down track direction.
A method, comprising:
- reading offset correction values from offset correction portions of tracks arranged on a storage medium, the tracks including data track portions configured to store data and having a data track width in a cross-track direction, each offset correction portion having a width in the cross-track direction greater than the data track width of an associated data track and containing one or both of positional offset correction values and timing offset correction values;
- and
- correcting for one or both of:
- errors that occur in cross track positioning relative to the medium using the positional offset correction values;
- and
- errors that occur in down track timing relative to the medium using the timing offset correction values.
Dependencies are inferred from the claim text.