Method and device for detecting the signal on a disc having a defect by utilizing an RF signal and its derivatives
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 27, 2007
Grant Date -
Sep 8, 2005
app pub date -
Mar 3, 2004
filing date -
Mar 3, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The device includes a servo control unit, a data path control unit, a defect detection unit, and a logic combination unit. The data path control unit further includes a preamplifier receiving data from a lens and generating RF signals for data process. The defect detection unit receives the various signals for detecting different kinds of defects to set corresponding defect flag signals. The defect detection unit includes means for ADefect1 detection, means for EFMDefect detection, means for RPDefect detection, means for Interruption detection, means for ADefect detection, and means for DSPDefect detection.
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