Digital tracking and focus servo system with TES to FES crosstalk calibration
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 25, 2005
Issued Date -
N/A
app pub date -
Sep 10, 2001
filing date -
Jan 25, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A servo system that calibrates a cross-talk gain parameter in a tracking error signal to focus error signal crosstalk correction is provided. The cross-talk gain parameter can be optimized such that the effects of a perturbation applied to the tracking servo loop on an adjusted focus error signal, i.e. a focus error signal that has been corrected for crosstalk, is minimized. The optimized cross-talk gain, then, can be set to the cross-talk gain of a set of cross-talk gains that results in the lowest value of a frequency component of the adjusted focus error signal while a perturbation at the frequency is being applied to the tracking servo loop.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully