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Class Information
Number: 360/78.12
Name: Dynamic magnetic information storage or retrieval > Automatic control of a recorder mechanism > Controlling the head > Track changing > For rotary carrier (e.g., disc) > Including particular head actuator
Description: Subject matter including a detail of a transducer head moving mechanism.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 7477471 |
Disk drive employing offset compensation for velocity control of a voice coil motor |
Jan. 13, 2009 |
| 7430091 |
Method and apparatus for improving the performance of a disk drive |
Sep. 30, 2008 |
| 7385781 |
Multi-arm disk drive system having interleaved read/write operations and method of controlling same |
Jun. 10, 2008 |
| 7379257 |
Magnetic disk drive |
May. 27, 2008 |
| 7375911 |
Piezoelectric actuator and sensor for disk drive dual-stage servo systems |
May. 20, 2008 |
| 7324301 |
Striping data simultaneously across multiple platter surfaces |
Jan. 29, 2008 |
| 7283321 |
Disk drives and methods allowing for dual stage actuator adaptive seek control and microactuator gain calibration |
Oct. 16, 2007 |
| 7283319 |
Ensuring rate of spin-up/spin-down cycles for spindle motor in a hard disk drive does not exceed rate spindle motor is designed to handle |
Oct. 16, 2007 |
| 7274525 |
Information processing system |
Sep. 25, 2007 |
| 7193804 |
Method and apparatus for controlling head velocity in a disk drive during ramp load/unload |
Mar. 20, 2007 |
| 7102842 |
Disk data storage apparatus and method using multiple head actuators |
Sep. 5, 2006 |
| 7038886 |
Positioner for precisely moving an E-block of a disk drive |
May. 2, 2006 |
| 6977790 |
Design scheme to increase the gain of strain based sensors in hard disk drive actuators |
Dec. 20, 2005 |
| 6972540 |
Disk drive employing wedge spindle speed control with eccentricity compensation |
Dec. 6, 2005 |
| 6954105 |
Disk drive and error amplifier therefor and related methods |
Oct. 11, 2005 |
| 6947251 |
Disk drive having electrically parallel actuator coils for selectively boosting actuator torque |
Sep. 20, 2005 |
| 6934112 |
Method for obtaining head positions in magnetic data writing apparatus |
Aug. 23, 2005 |
| 6922305 |
Apparatus and method for reducing vibrational excitation in storage devices with dual stage actuators |
Jul. 26, 2005 |
| 6914746 |
High sustained data rate storage devices having microactuator |
Jul. 5, 2005 |
| 6882494 |
Sensor system for disk device using floating head |
Apr. 19, 2005 |
| 6847504 |
Split VCM actuator |
Jan. 25, 2005 |
| 6829119 |
Disc drive microactuator with lateral position sensor |
Dec. 7, 2004 |
| 6826002 |
Measuring apparatus and measuring method for measuring performance characteristics of recording unit including circular recording medium |
Nov. 30, 2004 |
| 6798609 |
Magnetic microactuator with capacitive position sensor |
Sep. 28, 2004 |
| 6798610 |
Disk drive with self servo writing capability |
Sep. 28, 2004 |
| 6795268 |
Disk drive employing seek time vcm ir voltage calibration for velocity control of an actuator arm |
Sep. 21, 2004 |
| 6785086 |
Transducer-level microactuator with dual-axis control |
Aug. 31, 2004 |
| 6785088 |
Head positioner apparatus for data storage and retrieval |
Aug. 31, 2004 |
| 6768614 |
Positioner for precisely moving an e-block of a disk drive |
Jul. 27, 2004 |
| 6765743 |
Micro-actuator transducer stack inertia cancellation control |
Jul. 20, 2004 |
| 6760178 |
Disk memory apparatus compensating for temperature in a circuit for monitoring the back electromotive force of a voice coil motor, and method for controlling of a disk memory apparatus |
Jul. 6, 2004 |
| 6751047 |
Stepped disc drive voice coil actuator acceleration for reducing resonance of head level micro-actuators |
Jun. 15, 2004 |
| 6747837 |
Disk drive comprising an integrator for controlling a VCM actuator and transformer for controlling a piezoelectric actuator |
Jun. 8, 2004 |
| 6744577 |
Piezoelectric actuator and shock sensor |
Jun. 1, 2004 |
| 6741417 |
Plant variation compensation for piezoelectric microactuator in dual-stage servo of disc drives |
May. 25, 2004 |
| 6735032 |
Servo write timing generation in a multi-actuator disk drive |
May. 11, 2004 |
| 6735036 |
Control of data sensor fly height |
May. 11, 2004 |
| 6731454 |
Disk drive with a pivot embedded torque generating track follow actuator and method therefor |
May. 4, 2004 |
| 6724162 |
Motor-control device enabling the rotational speed of the motor's rotor to be measured |
Apr. 20, 2004 |
| 6721125 |
Position sensing system for disc drive magnetic microactuators |
Apr. 13, 2004 |
| 6721126 |
Position identification for a coarse actuator portion of a compound actuator |
Apr. 13, 2004 |
| 6721127 |
Electronic device for driving an actuator device for a hard disk and for driving a motor that turns the hard disk |
Apr. 13, 2004 |
| 6704157 |
Passive damping method and circuit for data storage device actuator |
Mar. 9, 2004 |
| 6697211 |
Magnetic head drive device |
Feb. 24, 2004 |
| 6674605 |
PQ enhanced dual stage servo controller |
Jan. 6, 2004 |
| 6631045 |
Method and apparatus for ramp loading in a hard disk drive using pulse width modulation |
Oct. 7, 2003 |
| 6624982 |
Magnetic disk recording apparatus |
Sep. 23, 2003 |
| 6621653 |
Secondary actuator system for mode compensation |
Sep. 16, 2003 |
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