197853 ⎘
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor; Disposition or mounting of heads relative to record carriers with provision for moving the head into or out of its operative position or across tracks; Track change, selection or acquisition by displacement of the head across disk tracks
Sub-classes:MAGNETIC DISC DEVICE
#2DISK DEVICE
#3DISK DRIVE ARM ACTUATOR WITH PIEZOELECTRIC ULTRASONIC MOTOR
#4MAGNETIC DISK DEVICE
#5HARD DISK DRIVE DISK MEDIA CURVATURE MITIGATION
#6VOICE COIL MOTOR COMPOSITE MAGNET ASSEMBLY INCLUDING LOW-COERCIVITY MAGNETIC MATERIAL
#7HARD DISK DRIVES WITH PIEZOELECTRIC ULTRASONIC MOTOR
#8Extended center stiffener plate for improved structural dynamics of actuators in a multi-actuator hard disk drive
#9AMPLIFIER CIRCUIT, MOTOR DRIVER CIRCUIT, POSITIONING DEVICE, AND HARD DISK DEVICE
#10DISK DEVICE WITH COLUMN ATTACHED TO BASE AND COVER
#11Data storage drive with dedicated erase transducer
#12Motor driver circuit for linear motor, positioning device using the same, and hard disk device
#13Voice coil motor yoke with annular groove in magnet bonding region and voice coil motor including same
#14Methods and devices for reducing condensation in storage devices
#15Parallel micro-actuator SSW writing
#16Magnet for motor of magnetic storage device
#17Pivot assembly bearing device and pivot assembly bearing device fabrication method
#18Parallel micro-actuator SSW writing
#19Disk drive having multiple disks accessible by a reduced number of read/write heads
#20Split-shaft pivot for a dual-actuator hard disk drive
#21Techniques for reducing dynamic coupling of system modes in a dual actuator hard disk drive
#22Low wear debris polyoxymethylene composition and a ramp made of such polyoxymethylene composition suitable for various HDD designs
#23Apparatus, systems and processes for reducing a hard disk drive's access time and concomitant power optimization
#24PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE APPARATUS USING THE SAME
#25Apparatus, systems and processes for reducing a hard disk drive's access time and concomitant power optimization
#26Disc drive speaker vibration mitigation
#27Apparatus, systems and processes for reducing a hard disk drive's access time and concomitant power optimization
#28Adaptive guard band for multiple heads of a data storage device
#29System, method and apparatus for master pattern generation, including servo patterns, for ultra-high density discrete track media using E-beam and self-assembly of block copolymer microdomains
#30Method for identifying high-speed frequency response of multirate system and apparatus therefor
#31Data storage
#32VOICE-COIL MOTOR WITH FLUX GUIDE CONFIGURED TO REDUCE HEAD VIBRATIONS IN A DISK DRIVE
#33Rolling bearing, bearing device and information recording and reproducing device
#34Lateral displacement and rotational displacement sensor
#35Multi-head array hard drive
#36Data storage apparatus and method
#37Disk drive having multiple disk surfaces accessible by a read/write head and nonvolatile memory for continuous data transfer
#38System, method and apparatus for master pattern generation, including servo patterns, for ultra-high density discrete track media using e-beam and self-assembly of block copolymer microdomains
#39STORAGE DEVICE
#40LUBRICANT DISTRIBUTION IN HARD DISK DRIVES USED FOR DIGITAL VIDEO RECORDERS
#41Pivot-carriage having a center-bore with an integrated bearing-spacer portion
#42MEMORY DEVICE, CONTROL DEVICE FOR MEMORY DEVICE, AND CONTROL METHOD FOR MEMORY DEVICE
#43STORAGE APPARATUS
#44Tool for loading a head onto a disk of a hard disk drive
#45Magnetic disk apparatus and data storage method
#46Recording method for a disk device having recording regions different in recording density
#47Voice Coil Motor
#48Voice coil motor and hard disk drive with the same
#49Post-assembly head/disk offset adjuster
#50Torsion compensation coil for voice coil motor of disk drive device, and method of making the same
#51VOICE COIL MOTORS AND MAGNETIC CIRCUITS THEREFOR
#52Hard disk drive
#53Resonant frequency separation for an actuator assembly of a disc drive
#54Actuator unit, driving device for information recording/reading head, information recording/reading apparatus, and method for driving the actuator unit
#55High-order hybrid actuator controller
#56Hard disk drive and command execution method
#57Fluidic stripper assembly with load/unload ramp
#58Head stack assembly with spacers to partition drive arms
#59HDD write control method and apparatus
#60System and method for state space control of seek acoustics
#61Magnetic head and disk X-Y test assembly with optimized arrangement for skew angle
#62Method for loading single head in a hard disk drive
#63Coil support structure and magnetic disk drive
#64Scheduler for a disc drive apparatus
#65Pickup unit homing mechanism for a disk drive unit
#66Apparatus and method to improve read/write speed of disk drive system
#67Fluidic stripper assembly with load/unload ramp
#68Magnetic disk apparatus and position control method for magnetic head slider thereof
#69Hard disk driving carriage and method of producing the same
#70Flow modification for reducing track misregistration in hard disk drives
#71Pivot shaft fixing structure with projection integral with cover member and data storage device having the same
#72Method for manufacturing a head stack assembly
#73Sensing a prior transducer position by a motion pattern
#74System and method for correcting for head tilt in HDD
#75Actuator for a disk drive having a suspension assembly including a flexure of a monolithic structure and a limiter
#76Method for loading single head in a hard disk drive
#77Method of determining the mass unbalance of an actuator
#78Disk array device for idle seek
#79Disk drive and electronic device provided with the same
#80Magnetic disk apparatus and position control method for magnetic head slider thereof
#81Efficient notch coefficient computation for a disc drive control system using fixed point math
#82Methods for searching for SAM patterns using multiple sets of servo demodulation detection parameters
#83Ball bearing cartridge for linear actuator
#84Brake crawler for elevator-type hard disk drives
#85Magnetic disk device having coupling observers for reducing coupling issues between independently running multi-actuators
#86Central support for improved structural dynamics of actuators in a multi-actuator hard disk drive
#87Reducing vibration transmission in a dual actuator disk drive utilizing a single pivot shaft
#88Shingled magnetic recording storage system improving command completion time
#89Contact induced data storage device destruction
#90Method and apparatus for writing test tracks on a magnetic recording medium
#91Heat-assisted magnetic recording device capable of laser calibration during a background operation
#92Actuator limiters for multiple disk-stack, shared actuator hard disk drive
#93Data management for data storage device with different track density regions
#94Position error signal (PES) detection
#95Per wedge preheat DFH to improve data storage device performance
#96Disk drive compensating for microactuator gain variations