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US20090237842 LOW TRACK-PER-INCH (TPI) ZONE WITH REDUCED NEED FOR ADJACENT-TRACK-ERASURE (ATE) REFRESH  
Methods and systems are shown that specify at least one low track-per-inch (TPI) region and at least one normal TPI region on a disk. The low TPI region may be used to store information that may...
US20150055255 LOW RESISTANCE GROUND JOINTS FOR DUAL STAGE ACTUATION DISK DRIVE SUSPENSIONS  
Stable, low resistance conductive adhesive ground connections between motor contacts and a gold-plated contact area on a stainless steel component of a dual stage actuated suspension. The...
US20140285925 DRIVER CIRCUIT  
A driver circuit includes a first current source configured to sink part of the current from a power supply through a load and a second current source configured to sink part of the current from...
US20110134567 PERPENDICULAR MAGNETIC WRITE HEAD WITH WRAP-AROUND SHIELD, SLANTED POLE AND SLANTED POLE BUMP FABRICATED BY DAMASCENE PROCESS  
A magnetic write head having a write pole with a tapered trailing edge. The write head has a non-magnetic step layer and a non-magnetic bump formed on the front edge of the magnetic step layer. A...
US20140340783 BACK ELECTROMOTIVE FORCE MONITORING CIRCUIT, MOTOR DRIVE DEVICE, MAGNETIC DISK STORAGE DEVICE, AND ELECTRONIC APPLIANCE  
A back electromotive force monitoring circuit has a speed detection voltage generator which biases a back electromotive force generated by a voice coil motor with a predetermined reference voltage...
US20120002324 DISK DRIVE WITH BALANCE PLUG HAVING LONGITUDINAL RETAINERS  
Described herein is a disk drive balance plug that includes a substantially cylindrical body defining a first end, a second end, a substantially cylindrical outer surface, and a plug central axis....
US20130038964 SPINDLE MOTOR HAVING CONNECTING MECHANISM CONNECTING LEAD WIRE AND CIRCUIT BOARD, AND STORAGE DISK DRIVE HAVING THE SAME  
A spindle motor includes a base portion, a rotor hub, a stator, and a circuit board. The base portion preferably includes a through hole and is arranged to spread out radially around a central...
US20110249362 SPINDLE MOTOR HAVING CONNECTING MECHANISM CONNECTING LEAD WIRE AND CIRCUIT BOARD, AND STORAGE DISK DRIVE HAVING THE SAME  
A spindle motor includes a base portion, a rotor hub, a stator, and a circuit board. The base portion preferably includes a through hole and is arranged to spread out radially around a central...
US20080002268 Write margin adjustment mechanism in a tape drive system  
A method is disclosed. The method includes monitoring a write driver to determine if a change in rewrite activity to a medium has changed and adjusting a percentage of error correcting code (ECC)...
US20070064324 Discontinuous copying method and system  
Digital data may be copied from a source device, or disc, to a target device, or disc, via an intermediary device, such as a hard drive. If the collective free storage space on all of the hard...
US20070217064 Disc driving motor and Information recording and reproducing apparatus  
The invention provides a motor which is mainly used in an HDD, maintains high accuracy without runout even upon rotation at high speed, and is excellent in resistance to external forces. A disc...
US20110043949 HEAD GIMBAL ASSEMBLY ALIGNMENT WITH COMPLIANT ALIGNMENT PIN  
This disclosure includes a system for aligning an unmounted head gimbal assembly (HGA) comprising a platform for a base plate of the HGA. The platform defines an X-Y plane. The system further...
US20080253013 Method of Reading From and Writing to a Storage Disk, and Storage Disk Control Unit  
A storage disk control unit is provided with a buffer management table that defines correspondence between the sectors of a storage disk and the buffer spaces of the storage disk control unit....
US20120162820 SPINDLE MOTOR FOR DRIVING A HARD DISK DRIVE  
The invention relates to a spindle motor, preferably for driving a hard disk drive, having a stationary motor component and a rotatable motor component that is rotatably supported with respect to...
US20060139803 Multilayer information medium, reproduction method and reproduction device thereof  
During reproduction of a multilayer recording medium including three or more information layers, a light beam is irradiated onto a target information layer. A reflected light from the information...
US20140002922 Failure-Resistant Multi-LUN Hard Disk Drive  
Approaches are provided for a hard-disk drive (HDD) and techniques for using multiple LUNs per HDD where each LUN is mapped to a head/disk interface. In one example, a HDD generates multiple LUNs...
US20080180855 Single stopper pin for controlling magnetic head placement in disk drive devices, and methods of making the same  
A voice coil motor for use in a disk drive device suitable for causing rotation of a head gimbal assembly connected to a first end of the voice coil motor is provided. At least one protrusion may...
US20100079909 METHOD FOR UNLOADING HEAD WITHOUT CALIBRATION IN HARD DISK DRIVES  
A hard disk drive with a voice coil motor coupled to a head. The disk drive includes a circuit that provides a drive current with a sinusoidal waveform to the voice coil motor during an unload...
US20070253109 Recordable data storage cartridge having optically writable label surface  
A recordable data storage cartridge includes a housing and a recordable data storage medium. The recordable data storage medium is at least partially encased within the housing. The housing has an...
US20130057985 LOAD BEAM WITH LOAD BENDS GENERATING LOAD, HEAD SUSPENSION WITH THE LOAD BEAM, AND METHOD OF FORMING LOAD BENDS OF THE LOAD BEAM  
A load beam of a head suspension has a rigid part and a resilient part supported with a base to be attached to a carriage arm. The load beam applies a load onto a head supported at a front end of...
US20110255196 PMR writer with graded side shield  
A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a graded side shield that is conformal to the shape of the pole tip at an upper portion of the...
US20080192385 ACTUATOR LATCH SYSTEM OF HARD DISK DRIVE  
An HDD includes a base, a swing arm having a notch at a rear end portion and mounted to the base so as to be rotatable, a VCM coil disposed on the rear end portion of the swing arm, a lower yoke...
US20090310243 MAGNETIC HEAD AND MAGNETIC STORAGE DEVICE  
A magnetic head that floats up while directing an air bearing surface to a relatively moving storage medium and stores information into the storage medium, the magnetic head includes: a main...
US20080043366 TAPE CARTRIDGE AUXILIARY MEMEORY BASED LIBRARY  
A data storage library is described including a plurality of tape cartridges wherein each of the tape cartridges possesses an auxiliary radio frequency memory device in which auxiliary digital...
US20090244784 STORAGE APPARATUS  
A storage apparatus includes a magnetic circuit applying driving force to a carriage. The magnetic circuit includes a first yoke provided with a magnet. An end of the first yoke is secured using a...
US20120050905 SOC HARDWARE ENGINES FOR MULTI-RATE NOTCH FILTERS  
A hard disk drive that includes a disk with servo bits. The hard disk drive also includes a central processing unit that performs a servo routine using the servo bits, and a separate a notch...
US20050213256 Snap ring with debris-reducing cross-sectional profile  
A snap ring for applications requiring cleanliness has a novel blunted cross-sectional profile that reduces debris generation during installation of the snap ring. The snap ring is suitable for...
US20150170690 Shielded Flex Cable for Use in a Disk Drive  
A flex cable with a shielding layer for use in a disk drive is described. The flex cable connects the actuator to the system electronics. The flex cable has a shielding layer that provides RF...
US20150255094 BASE PLATE WITH RELIEF RING FOR SUSPENSION ASSEMBLY WITH MODIFIED DEFORMATION CHARACTERISTICS  
A base plate system including a base plate with first and second opposite surfaces, a boss tower extending from the first surface of the base plate and having an outer surface, a swaging hole...
US20050013054 Inertial latching mechanism and information recorder using the mechanism  
An inertial latching mechanism of high reliability, which can be incorporated in a slim profile disk drive or the like information recorders. Describing practically, the mechanism includes freely...
US20100097726 COST REDUCED MICROACTUATOR SUSPENSION  
An improved microactuator suspension is provided for use with high density storage media. The number of microactuator elements is reduced to one and placed perpendicularly to the longitudinal axis...
US20110102932 METHOD OF MANAGING DEFECT AND APPARATUSES USING THE SAME  
A method of managing a defect of a hard disk drive includes calculating a number of ECC symbols of every sector which becomes an object of a defect scan and setting a defect reference value based...
US20090015968 Voice coil motor and disk drive unit with the same  
A voice coil motor for a disk drive includes a permanent magnet, a voice coil adapted to move in an arc proximate to the permanent magnet, a top plate positioned above the voice coil, and a bottom...
US20090097164 Drive with voice coil motor  
A drive is provided executing high-speed oscillatory motion. A voice coil motor in a pixel shifter includes a coil of a rectangular shape producing thrust along an axis, a flap fixing the coil,...
US20060072248 Electro-dynamic exciter  
An electro-dynamic exciter includes a magnetic circuit assembly composed of an outer yoke having a cylindrical peripheral wall, and a bottom wall connected to one end of the peripheral wall, a...
US20120268841 SUSPENSION FOR COMPENSATING SLIDER ATTITUDE  
Disclosed is an assembly located in a memory device. The assembly includes: a suspension including a flexure to which a slider is coupled and a load beam disposed at an upper part of the flexure...
US20060066971 System and method for ameliorating the effects of adjacent track erasure in magnetic data storage device  
To ameliorate the effects of ATE in a HDD, tracks that are potential victim tracks of an aggressor track by virtue of the victim tracks being exposed to a magnetic field associated with a write of...
US20090190266 Magnetic disk drive and voice coil motor  
Embodiments of the present invention help to reduce out-of-plane excitation force exerted on a coil in a voice coil motor of a magnetic disk drive, so that vibration of a magnetic head is...
US20100271733 HARD DISK DRIVE  
A hard disk drive includes an end tap which extends from an end part of a suspension and supports a slider; a ramp which includes a parking guide rail including a parking guide wall on which the...
US20130258525 Write Yoke with Stabilizing Layer  
An apparatus is provided that generally relates to a data writer that may be constructed with a write pole coupled to a yoke. The yoke may be configured with a stabilizing layer that stabilizes...
US20070279800 Disk Clamping Device  
To provide a disk clamping device which can reduce a required space for performing disk clamping in the disk device. The disk clamping device comprises: a pick arm 130 which is swung into and...
US20150170695 SYSTEMS AND METHODS FOR CLEARANCE MONITORING IN STORAGE MEDIA  
A method for measuring the head-disk clearance between a slider and a disk includes measuring a first resistance with a first bias applied to an embedded contact sensor of the slider, measuring a...
US20140268421 MAGNETIC SENSOR WITH DIFFERING STRIPE HEIGHTS  
A magnetic sensor may be generally configured in accordance with various embodiments to have a magnetically responsive stack with first and second free layers and without a fixed magnetization....
US20070103810 CONTACTS FOR A MAGAZINE FOR A MAGAZINE-BASED LIBRARY  
Described herein is a mobile data storage magazine for interacting with a docking station. The magazine can include a magazine frame containing a plurality of operatively interconnected disk...
US20120075744 METHOD OF OPTIMIZING FLYING HEIGHT OF HEAD AND HARD DISK DRIVE MANUFACTURED BY THE SAME  
A hard disk drive includes a controller that optimizes a flying height of a head of a hard disk drive. The controller determines an optimal flying height of a head based on a preset table value...
US20060209461 Housing case for recording medium built-in cartridge, and cartridge built-in package using the same  
A housing case for a recording medium built-in cartridge of the present invention is for housing the recording medium built-in cartridge having an air vent. The housing case includes: a housing...
US20080158719 LINEAR TAPE DRIVE MODULE FOR A LINEAR TAPE DRIVE SYSTEM  
A linear tape drive system includes a tape having a path direction, a data track having data transitions at an azimuthal orientation relative to the path direction, and a servo track having servo...
US20150015996 SLIDER WITH SELF-ASSEMBLED MONOLAYER PATTERN  
A slider, having a leading edge, a trailing edge, a working surface, and read/write heads proximate the trailing edge. The slider includes a protective overcoat over the working surface of the...
US20130155547 DAMPING MATERIAL TO INCREASE A DAMPING RATIO  
A damping material to increase a damping ratio is disclosed. In one embodiment, an actuator arm assembly of a hard-disk drive (HDD) comprises an actuator arm. A viscoelastic layer is coupled with...
US20100097714 GENERATING PES USING READBACK SIGNAL DISTORTION  
A data storage system includes a storage medium having a plurality of data sectors and a head that communicates with the data storage medium. The head produces a readback signal when reading...