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Class Information
Number: 360/78.05
Name: Dynamic magnetic information storage or retrieval > Automatic control of a recorder mechanism > Controlling the head > Track changing > For rotary carrier (e.g., disc) > Coarse and fine head drive motors
Description: Subject matter in which the transducer head is moved over the disk by plural motors having different resolution.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| RE40975 |
Head suspension with resonance feedback transducer |
Nov. 17, 2009 |
| 7599145 |
Storage medium device, deformation controller and head slider |
Oct. 6, 2009 |
| 7595956 |
Microactuator reference input limit to prevent internal states over-accumulation |
Sep. 29, 2009 |
| 7570451 |
Servo architecture for high areal density data storage |
Aug. 4, 2009 |
| 7551386 |
Head gimbal assembly with flying height controller, disk drive unit using the same, and flying height adjusting method and system thereof |
Jun. 23, 2009 |
| 7548396 |
Storage apparatus, control method, and control device of storage apparatus |
Jun. 16, 2009 |
| 7474496 |
Micro actuator DC gain calibration scheme for HDD dual-stage actuator systems |
Jan. 6, 2009 |
| 7446970 |
Magnetic head assembly, magnetic disk drive and posture control method for magnetic head slider |
Nov. 4, 2008 |
| 7423837 |
Micro actuator gain calibration based on a sinusoidal input signal |
Sep. 9, 2008 |
| 7385780 |
Online identification of secondary actuator transfer function via system decoupling in multiple-stage actuator servo systems in disk drives |
Jun. 10, 2008 |
| 7342740 |
In-situ compensation method of microactuator stroke sensitivity subject to temperature variation |
Mar. 11, 2008 |
| 7312945 |
Techniques for adjusting for actuator non-linearities in a data storage system |
Dec. 25, 2007 |
| 7283321 |
Disk drives and methods allowing for dual stage actuator adaptive seek control and microactuator gain calibration |
Oct. 16, 2007 |
| 7265936 |
Algorithm for DSA/microactuator total loop gain calibration |
Sep. 4, 2007 |
| 7250738 |
Nonlinear hysteresis control system |
Jul. 31, 2007 |
| 7173790 |
Magnetic disk apparatus with dual stage actuator |
Feb. 6, 2007 |
| 7164552 |
Method for self-servo writing a disk drive with dual-stage actuator |
Jan. 16, 2007 |
| 7154702 |
Head actuator |
Dec. 26, 2006 |
| 7145745 |
Multi-stage actuator disk drives, methods, and computer program products that compensate for repeatable runout based on estimated secondary actuator position |
Dec. 5, 2006 |
| 7136257 |
Apparatus and method for maintaining stability in a disc drive servo loop |
Nov. 14, 2006 |
| 7126780 |
Method, system, and article of manufacture for self-servowriting a disk |
Oct. 24, 2006 |
| 7126785 |
Multi-stage actuator disk drives, methods, and computer program products for seeking and then maintaining a transducer on track |
Oct. 24, 2006 |
| 7116510 |
Servo self-write disk drive with dual-stage actuator |
Oct. 3, 2006 |
| 7106552 |
Method for secondary-actuator failure detection and recovery in a dual-stage actuator disk drive |
Sep. 12, 2006 |
| 7075748 |
Disk drive with a dual-stage actuator and failure detection and recovery system for the secondary actuator |
Jul. 11, 2006 |
| 7038876 |
Control system for a data storage device with constraint |
May. 2, 2006 |
| 7038877 |
Head positioning apparatus |
May. 2, 2006 |
| 7038886 |
Positioner for precisely moving an E-block of a disk drive |
May. 2, 2006 |
| 7035041 |
Displacement resetting systems and methods for the second stage of a hard disk drive dual-stage actuator |
Apr. 25, 2006 |
| 7031099 |
Head positioner and information recording/replaying apparatus |
Apr. 18, 2006 |
| 7019938 |
Head positioning method, and disk apparatus using the same |
Mar. 28, 2006 |
| 7012780 |
Disk drive and methods that calibrate micro actuator positioning before seek operations |
Mar. 14, 2006 |
| 7009804 |
Method and apparatus for micro-actuator stroke sensitivity calibration in a hard disk drive |
Mar. 7, 2006 |
| 7009799 |
Tiltable device, in particular hard disk actuator device, with roll and pitch angle active control |
Mar. 7, 2006 |
| 6989949 |
Performance test method of head gimgal assembly with precise positioning actuator |
Jan. 24, 2006 |
| 6985327 |
Method and control scheme for compensating the coarse actuators undesired transients in dual stage control systems |
Jan. 10, 2006 |
| 6977793 |
Magnetic recording disk drive with dual-stage actuator and control system with multiple controllers |
Dec. 20, 2005 |
| 6975482 |
Settle control systems and methods for the second stage of a dual stage actuator |
Dec. 13, 2005 |
| 6975481 |
Driver systems and methods for an actuator of a hard disk drive |
Dec. 13, 2005 |
| 6975477 |
Micro actuator DC gain calibration scheme for HDD dual-stage actuator systems |
Dec. 13, 2005 |
| 6972924 |
Disk drive attenuating excitation of arm vibration mode by simultaneously driving secondary actuator for non-active head |
Dec. 6, 2005 |
| 6934117 |
Technique to compensate for resonances and disturbances on primary actuator through use of a secondary actuator |
Aug. 23, 2005 |
| 6922303 |
Reaction mass dual-stage actuator (DSA) and sensor |
Jul. 26, 2005 |
| 6909571 |
Method and apparatus actively damping mechanical vibration and shock in head suspensions of a disk drive |
Jun. 21, 2005 |
| 6888695 |
Information recording and reproducing apparatus having higher drive pulse frequency during seeking operation than during following operation |
May. 3, 2005 |
| 6883062 |
High-speed disk drive system |
Apr. 19, 2005 |
| 6882494 |
Sensor system for disk device using floating head |
Apr. 19, 2005 |
| 6873489 |
Method, system, and program for estimating coil resistance of a voice coil motor in a disk drive system |
Mar. 29, 2005 |
| 6833974 |
Head positioning device and disk drive using same |
Dec. 21, 2004 |
| 6831807 |
Head positioner and disk drive using the same |
Dec. 14, 2004 |
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