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US 2004/0170090 A1Published application
Information storage device
AssigneeFujitsu Limited
InventorsTakayuki Kawabe, Ichiro Watanabe
Life of this patent
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Abstract
An information storage device having a uniaxial tracking mechanism as a pickup which can perform a stable track pull-in operation is provided. A deceleration pulse amplitude a supplied to a tracking actuator is determined from a linear function á=K(V−V0) of a detected movement velocity of a beam in the vicinity of a target track. The deceleration pulse amplitude is divided into two, and is supplied to the tracking actuator on two different occasions.
Claims11
An information storage device comprising:
- a tracking actuator;
- and
- a deceleration control unit which supplies a deceleration pulse to the tracking actuator a plurality of times between a seek control operation for seeking a target track and a tracking control operation for scanning the target track with a beam.
An information storage device comprising:
- a tracking actuator;
- a movement velocity detecting unit which detects a movement velocity of a beam between a seek control operation for seeking a target track and a tracking control operation for scanning the target track with the beam;
- and
- a deceleration pulse generating unit which determines an amplitude of a deceleration pulse to be supplied to the tracking actuator as a linear function of the movement velocity detected by the movement velocity detecting unit.
1 more element
Dependencies are inferred from the claim text.