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Class Information
Number: 360/78.14
Name: Dynamic magnetic information storage or retrieval > Automatic control of a recorder mechanism > Controlling the head > Track changing > For rotary carrier (e.g., disc) > By recorded servo reference or address signal
Description: Subject matter wherein the head is controlled by a reproduced signal representing the position or address of the transducer head on the record carrier disk.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7593180 |
HDD data read control apparatus, medium, and method |
Sep. 22, 2009 |
| 7580219 |
Controlling seeks using non-linear switching curves |
Aug. 25, 2009 |
| 7564644 |
Adaptive disturbance repressing method and apparatus, and disk drive apparatus using the same |
Jul. 21, 2009 |
| 7518819 |
Disk drive rewriting servo sectors by writing and servoing off of temporary servo data written in data sectors |
Apr. 14, 2009 |
| 7502187 |
Address mark detection |
Mar. 10, 2009 |
| 7468859 |
Voice coil motor effective resistance determination |
Dec. 23, 2008 |
| 7466506 |
Magnetic recording disk drive with head positioning servo control system for disk surfaces with identical servo patterns |
Dec. 16, 2008 |
| 7463445 |
Method of controlling track seek in HDD and a recording medium therefor |
Dec. 9, 2008 |
| 7375918 |
Method of self-servo writing in a disk drive using multiple timing windows |
May. 20, 2008 |
| 7307810 |
Method of compensating for track address discontinuity across servo track writing boundary in hard disk drives |
Dec. 11, 2007 |
| 7286319 |
Disk drive write control by servo gain |
Oct. 23, 2007 |
| 7283320 |
Magnetic recording medium including servo and data bands in the magnetic layer |
Oct. 16, 2007 |
| RE39831 |
Method and apparatus for providing positional information on a disk |
Sep. 11, 2007 |
| 7265937 |
Positioning of a head array over a data storage medium |
Sep. 4, 2007 |
| 7212374 |
Disk drive to characterize misaligned servo wedges |
May. 1, 2007 |
| 7199960 |
Disk drive with AC exciter for head/disk interface |
Apr. 3, 2007 |
| 7042668 |
Method and apparatus for generating an index location from a spin motor of a disk drive |
May. 9, 2006 |
| 7019939 |
Apparatus and method for positioning head at target position on disk |
Mar. 28, 2006 |
| 7016133 |
Systems for detecting multiple occurrences of a SAM pattern to thereby improve servo-demodulation robustness |
Mar. 21, 2006 |
| 7016132 |
Magnetic data embedding system |
Mar. 21, 2006 |
| 7012773 |
Disk device and disk medium, in which a plurality of servo cylinders formed concentrically from the inner diametrical portion to the outer diametrical portion of at least one disk are divided |
Mar. 14, 2006 |
| 7009791 |
Position detecting method, information recording/reproducing device and information recording medium |
Mar. 7, 2006 |
| 7006311 |
Systems for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness |
Feb. 28, 2006 |
| 7006312 |
Methods for preventing channel control values from being corrupted to thereby improve servo-demodulation robustness |
Feb. 28, 2006 |
| 6999259 |
Master disc and method of manufacturing the same |
Feb. 14, 2006 |
| 6995938 |
Data recording system with servo pattern having pseudo-noise sequences |
Feb. 7, 2006 |
| 6992855 |
Methods for limiting channel control values to thereby improve servo-demodulation robustness |
Jan. 31, 2006 |
| 6992856 |
Systems for limiting channel control values to thereby improve servo-demodulation robustness |
Jan. 31, 2006 |
| 6965966 |
Disk drive pre-computing seek parameters for a continuation track and a next command to facilitate continuing a read-ahead or aborting the read-ahead |
Nov. 15, 2005 |
| 6963458 |
Method and apparatus for reducing the servo position error signal non-linearity during self-servo writing irrespective of the head width |
Nov. 8, 2005 |
| 6954318 |
Magnetic data embedding apparatus having checking function |
Oct. 11, 2005 |
| 6950273 |
Magnetic disk device |
Sep. 27, 2005 |
| 6950274 |
Disk storage apparatus and disk storage apparatus control method |
Sep. 27, 2005 |
| 6947233 |
Disk drive apparatus and method for compensating for error in servo-information-recorded position between heads |
Sep. 20, 2005 |
| 6947243 |
Method and system for time-shift based rotational vibration sensing in disk drives |
Sep. 20, 2005 |
| 6943981 |
Methods for improving servo-demodulation robustness |
Sep. 13, 2005 |
| 6934111 |
System, method, and apparatus for testing a head gimbal assembly |
Aug. 23, 2005 |
| 6927935 |
Method and apparatus for head positioning using servo control in a disk drive |
Aug. 9, 2005 |
| 6924961 |
Method and apparatus for self servowriting of tracks of a disk drive using an observer based on an equivalent one-dimensional state model |
Aug. 2, 2005 |
| 6920011 |
Recording device having disk-shaped recording medium and servo information processing method |
Jul. 19, 2005 |
| 6839194 |
Disk drive apparatus and method for generating servo sector pulse |
Jan. 4, 2005 |
| 6813108 |
Servo data detection in presence of radial incoherence using multiple data detectors |
Nov. 2, 2004 |
| 6785075 |
Self-writing servo and clock fields on a recording medium |
Aug. 31, 2004 |
| 6765748 |
Method of interleaving servo information fields for track following and seeking and a recording medium including interleaved servo information fields |
Jul. 20, 2004 |
| 6760185 |
Method and system for generating servo position error signals |
Jul. 6, 2004 |
| 6760172 |
Magnetic disk drive |
Jul. 6, 2004 |
| 6754019 |
System and method for implementing a rotary memory device |
Jun. 22, 2004 |
| 6747832 |
Disk apparatus and head position control method |
Jun. 8, 2004 |
| 6747836 |
Position control system and method for magnetic hard disk drive systems with dual stage actuation |
Jun. 8, 2004 |
| 6735032 |
Servo write timing generation in a multi-actuator disk drive |
May. 11, 2004 |
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