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US 2003/0165029 A1Published application
Time-based servopositioning systems
AssigneeImation Corp.
InventorsRichard W. Molstad, Yung Yip
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Abstract
Servopositioning systems, methods, formats, and data recording media used in association with the same, employing additional timing reference information to improve immunity to time-based errors caused by instantaneous speed variations.
Claims18
A servopositioning system for a linear data recording system, comprising in combination:
- a) a linear data recording medium, upon which are recorded a time-based servo signal, and a timing reference signal having a bandwidth, and
- b) circuitry, separately responsive to the timing reference and time-based servo signals, for
- (i) producing position error signals by sampling the time-based servo signal at a sampling rate;
- and
- (ii) increasing the bandwidth of the timing reference signal above the sampling rate of (i).
2 more elements
A method of servopositioning for use with a data recording system, comprising:
- a) writing on a linear data recording medium a time-based servo signal, and a timing reference signal having a bandwidth;
- b) producing position error signals by sampling the time-based servo signal at a sampling rate;
- and
- c) increasing the bandwidth of the timing reference signal above the sampling rate.
1 more element
Dependencies are inferred from the claim text.