Method and system for reading data that is unreadable by a tape drive
AssigneeStorage Technology Corporation
InventorsDouglas C. Hansen, Frederick A. McLean
Life of this patent
Estimating the term…
Abstract
A method and system for reading data containing errors due to curved or displaced tracks in a track region reproduced by reproducing heads in a tape drive includes a signal processing circuit for sensing a first set of parameters associated with the data at a first head position at predetermined points along each track in the region. The signal processing circuit also senses a second set of parameters associated with the data at a second head position different from the first head position at the predetermined points along each track in the region. A movable head controller positions the reproducing heads to follow the curved or displaced tracks based on the first and second head positions and the first and second set of parameters.
Claims14
A method for reading data reproduced by reproducing heads in a tape drive, the data containing errors due to curved or displaced tracks in a track region having a predetermined width, the method comprising:
- sensing a first set of parameters associated with the data at a first head position within the predetermined width at predetermined points along each track in the region;
- sensing a second set of parameters associated with the data at a second head position within the predetermined width different from the first head position at the predetermined points along each track in the region;
- and
- positioning the reproducing heads to follow the curved or displaced tracks based on the first and second head positions and the first and second set of parameters.
A system for reading data reproduced by reproducing heads in a tape drive, the data containing errors due to curved or displaced tracks in a track region having a predetermined width, the system comprising:
- a signal processing circuit for sensing a first set of parameters associated with the data at a first head position within the predetermined width at predetermined points along each track in the region and sensing a second set of parameters associated with the data at a second head position within the predetermined width different from the first head position at the predetermined points along each track in the region;
- and
- a movable head controller coupled to the signal processing circuit for positioning the reproducing heads to follow the curved or displaced tracks based on the first and second head positions and the first and second set of parameters.
Dependencies are inferred from the claim text.