Servo track squeeze compensation in a disk drive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 29, 2009
Grant Date -
N/A
app pub date -
Feb 18, 2008
filing date -
Feb 18, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A disk drive that compensates for written-in track squeeze errors (TSEs) during track following is disclosed. The disk drive may be used to compensate for TSEs when determining the position error signal (PES) by implementing operations that include: determining a track squeeze value for a servo sector based upon read servo bursts; determining a PES value for the servo sector based upon read servo bursts; estimating a Squeeze Correction Coefficient (SCC) to account for track squeeze induced PES sensing gain variation associated with the servo sector based upon the PES value and the track squeeze value; calculating a squeeze corrected PES value based upon the SCC and the PES value; and utilizing the squeeze corrected PES value in servo control.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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