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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:

Class Number Class Name Patents
360/78.13 Stepping motor 138

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8693126 Ultra fast disk access using arrays of fixed read/write transducers Apr. 8, 2014
8630058 Drive apparatus, library apparatus, and control method thereof Jan. 14, 2014
8526133 Systems and methods for user data based fly height calculation Sep. 3, 2013
8462459 Method and system for determining relationship between hard disk drive throughput and vibration source Jun. 11, 2013
8228628 Data storage disk having variable location signal and disk drive using the data storage disk Jul. 24, 2012
8154823 Information recording and reproducing apparatus, information recording and reproducing system, information processing apparatus and information reproducing apparatus Apr. 10, 2012
8144435 Cost reduced microactuator suspension Mar. 27, 2012
8064158 Systems, methods, and apparatus for controlling Bi-directional servo actuator with PWM control Nov. 22, 2011
7891080 Techniques for detecting head-disc contact Feb. 22, 2011
7760463 Multiple disks in a single disk package Jul. 20, 2010
7742255 Head-disc interface (HDI) modal response monitoring Jun. 22, 2010
7706101 Transducer positioning assembly Apr. 27, 2010
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
6798610 Disk drive with self servo writing capability Sep. 28, 2004
6798609 Magnetic microactuator with capacitive position sensor Sep. 28, 2004
6795268 Disk drive employing seek time vcm ir voltage calibration for velocity control of an actuator arm Sep. 21, 2004
6785088 Head positioner apparatus for data storage and retrieval Aug. 31, 2004
6785086 Transducer-level microactuator with dual-axis control 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
6735036 Control of data sensor fly height May. 11, 2004

1 2 3 4

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