Averaged slope timing-based-servo tape-creep detection
AssigneeInternational Business Machines Corporation
InventorsDaniel James Winarski, Nhan Xuan Bui, Lee Curtis Randall, Richard Bradshaw
Life of this patent
Estimating the term…
Abstract
A tape drive may calculate a slope for each of the timing-based-servo marks in a timing-based-servo group. The timing-based-servo marks are arranged in one or more M-patterns. The tape drive may average the slope for each of the timing-based-servo marks across the one or more M-patterns. The tape drive may generate a least-squares assessment of the averaged slope. The tape drive may determine, from the least-squares assessment, whether the averaged slope is demonstrative of tape-creep.
Claims18
A method for allowing a tape drive to read from a tape cartridge with timing-based-servo marks, the method comprising:
- calculating a slope for each of the timing-based-servo marks in a timing-based-servo group, wherein the timing-based-servo marks are arranged in one or more M-patterns;
- averaging the slope for each of the timing-based-servo marks across the one or more M-patterns;
- generating a least-squares assessment of the averaged slope;
- and
- determining, from the least-squares assessment, whether the averaged slope is demonstrative of tape-creep.
A system comprising:
- a tape drive;
- and
- a tape cartridge with timing-based-servo marks, wherein the tape drive reads from the tape cartridge, and wherein the tape drive is configured to perform the operations comprising:
- calculating a slope for each of the timing-based-servo marks in a timing-based-servo group, wherein the timing-based-servo marks are arranged in one or more M-patterns;
- averaging the slope for each of the timing-based-servo marks across the one or more M-patterns;
- generating a least-squares assessment of the averaged slope;
- and
- determining, from the least-squares assessment, whether the averaged slope is demonstrative of tape-creep.
Dependencies are inferred from the claim text.