Claims
- 1. A method of closing tracking following a multi-track seek operation, comprising:
detecting a seek to tracking transition; measuring the velocity error; increasing a gain of a tracking servo system for a predetermined number of cycles of time; closing tracking on a destination track.
- 2. The method of claim 1, wherein parameters of a phase lead filter in the tracking servo system is adjusted during the multi-track seek operation.
- 3. The method of claim 1, wherein detecting a seek to tracking transition includes receiving a seek completion signal from a multi-track seek algorithm.
- 4. The method of claim 1, wherein measuring the velocity error includes
measuring zero crossings in a tracking error signal; measuring a time period between zero crossings; calculating a velocity error from the time period.
- 5. The method of claim 1, wherein increasing the gain of the tracking servo system includes increasing a loop gain of the tracking servo system.
- 6. The method of claim 1, wherein the predetermined number of clock periods is less 4.
- 7. A servo system, comprising:
an optical pick-up unit; an analog processor coupled to receive signals from detectors in the optical pick-up unit and provide digital signals; at least one processor coupled to receive the digital signals; and a driver coupled to control the position of the optical pick-up unit in response to the control signal, wherein the at least one processor executes an algorithm that detects a seek to tracking transition; measures the velocity error; increases a gain of a tracking servo system for a predetermined period of time; and closes tracking on a destination track.
RELATED APPLICATIONS
[0001] This application is related to provisional application Ser. No. 60/264,3 51, entitled “Optical Disk Drive Servo System,” by Ron J. Kadlec, Christopher J. Turner, Hans B. Wach, and Charles R. Watt, from which this application claims priority, herein incorporated by reference in its entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60264351 |
Jan 2001 |
US |