Industry
Background Material
Self
Servo Writing Concepts and Patents
Disk
Industry Trend Graphs (DISKCON and Other)
Thin
Film Motor Design and Modeling
Storage
History Animation
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Thin
Film Motor Design and Modeling
Sketch of Motor Layout
Result of 2D Magnetic
Model of Thin Film Motor Rotor/Stator Showing
Succesively Energized
Coil
Pairs, Resulting Flux
and Induced Rotor Motion.
Self
Servo Writing Concepts and Patents
Self
Servo Writing (also Disk Write) Patents
|
Patent |
Assignee |
Issued |
Title |
US6049442 |
IBM |
04/11/00 |
Multiply-written servo burst patterns for minimizing position
error in servo disk drives |
US6040955 |
IBM |
03/21/00 |
Self
servo writing file |
US6034835 |
IBM |
03/07/00 |
Multiple
servo track types using multiple frequency servo patterns
|
US6031680 |
IBM |
02/29/00 |
Methods and systems for self-servowriting including maintaining
a reference level within a usable dynamic range |
US6023389 |
IBM |
02/08/00 |
Method and apparatus for writing servo bursts with compensation
for erase bands in a direct access storage device |
US6005738 |
IBM |
12/21/99 |
Methods and systems for self-servo-writing including writing
positioning and timing bursts at different track pitches |
US5949603 |
IBM |
09/07/99 |
Self
servo writing file using the widest head |
US5926336 |
Samsung |
07/20/99 |
Method and apparatus for rewriting servo information on
a disk in a hard disk assembly |
US5907447 |
IBM |
05/25/99 |
Radial
self-propagation pattern generation for disk file servowriting
|
US5875064 |
IBM |
2/23/99 |
Method and system for accurate self-servowriting with normalization
in a disk drive |
US5867343 |
Samsung |
2/2/99 |
Method and apparatus for storing position offset information
on a hard drive assembly cylinder |
US5867337 |
Toshiba |
2/2/99 |
Disk drive of a sector servo system for positioning and
controlling a head at a target position on a disk |
US5844742 |
IBM |
12/1/98 |
Radial
self-propagation pattern generation for disk file servowriting
|
US5793559 |
Quantum |
8/11/98 |
In
drive correction of servo pattern errors |
US5793554 |
IBM |
8/11/98 |
Self-servowriting
system with dynamic error propagation reduction |
US5757574 |
IBM |
5/26/98 |
Methods and systems for self-servowriting including maintaining
a reference level within a usable dynamic range |
US5668679 |
Quantum |
9/16/97 |
System
for self-servowriting a disk drive |
US5659436 |
IBM |
8/19/97 |
Radial
self propagation pattern generation for disk file servowriting
|
US5612833 |
IBM |
3/18/97 |
Radial
self-propagation pattern generation for disk file servowriting
|
US5570247 |
IBM |
10/29/96 |
Self
servo writing file |
US5541784 |
Cribbs |
7/30/96 |
Bootstrap
method for writing servo tracks on a disk drive |
US5448429 |
Cribbs |
9/5/95 |
Self-servowriting
disk drive and method |
DISKCON
and Other Industry Trend Graphs
Historical Charts prepared for Past IDEMA DISKCON's
|
