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Dynamic magnetic information storage or retrieval December patent applications/inventions, industry category 12/10

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
12/30/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100328801 - Disk drive: According to one embodiment, a disk drive includes a disk medium, a read controller configured to perform a read control for information in the disk medium, a determiner configured to determine whether or not to ignore a read error in information as a read target depending on a type of... Agent: Knobbe Martens Olson & Bear LLP

20100328800 - Magnetic recording apparatus and magnetic recording evaluating apparatus: A magnetic recording apparatus includes: a magnetic recording medium having a recording surface on which a plurality of magnetic recording cells magnetically isolated from each other are arranged; a magnetic writing element recording information to the magnetic recording cells under a condition in accordance with setting information; a magnetic reading... Agent: Edwards Angell Palmer & Dodge LLP

20100328802 - Servo write head gap width correction: Embodiments include methods, apparatus, and systems for servo write head gap width correction. One method includes measuring a pulse mismatch for servo stripes on magnetic tape written with a servo write head having servo head gaps with different physical sizes, and separately energizing the servo head gaps to correct the... Agent: Hewlett-packard Company Intellectual Property Administration

20100328799 - Spin torque oscillator sensor: A spin torque oscillation magnetoresistive sensor for measuring a magnetic field. The sensor uses a change in precessional oscillation frequency of a magnetization of a magnetic layer to determine the magnitude of a magnetic field. The sensor can include a magnetic free layer, a magnetic pinned layer and a non-magnetic... Agent: Zilka-kotab, PC- Hit

20100328798 - System and method for determining vibration of at least one hard disk drive: A system for determining vibration of at least one hard disk drive includes one or more computers configured to command a plurality of reads from the at least one hard disk drive such that, for each of the plurality of reads, data stored on the at least one hard disk... Agent: Brooks Kushman P.C. /oracle America/ Sun / Stk

20100328803 - Combining information from parallel servo channels: A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module comprises two synchronous servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted parameter estimate and for a measure of the... Agent: Law Firm Of Dan Shifrin

20100328804 - Magnetic disk storage device and method controlling of magnetic disk storage device: According to one embodiment, a magnetic disk storage device includes a magnetic disk, a head, a clock generator, an estimating module, and a controller. The magnetic disk includes a servo area and a corresponding data area, and has a surface divided into zones in the radial direction. The basic frequency... Agent: Knobbe Martens Olson & Bear LLP

20100328805 - Error tolerant or streaming storage device: A method of storing data includes receiving general purpose (GP) data and special Error Tolerant or Streaming (ETS) data, storing the GP data using a data storage method, and storing the ETS data using a different data storage method which affects the access rate, resilience to errors, data integrity, storage... Agent: Marsh, Fischmann & Breyfogle LLP

20100328807 - Integrated heat assisted magnetic recording device: An integrated heat-assisted magnetic recording (HAMR) device comprises a slider that has a top surface, a bottom surface, and a trailing end. A waveguide is carried on the trailing end and a near field transducer is positioned to receive energy from the waveguide and produce plasmons for heating a region... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20100328808 - Magnetic element with thermally assisted writing: Magnetic element with thermally-assisted magnetic-field writing or thermally-assisted spin-transfer writing, comprising: a reference magnetic layer having a fixed direction magnetization; a storage magnetic layer exchange-pinned with an antiferromagnetic layer, wherein the magnetization direction of the storage layer can vary when said element can be heated to a temperature at least... Agent: Pearne & Gordon LLP

20100328806 - Near-field light generating device that includes near-field light generating element accommodated in a groove of an encasing layer: A near-field light generating element accommodated in a groove of an encasing layer has an outer surface that includes a first end face including a near-field light generating part, a second end face opposite to the first end face, and a coupling portion that couples the first and second end... Agent: Oliff & Berridge, PLC

20100328810 - Disk drive and servo-control method therefor: A disk drive. The disk drive includes a head, an actuator, and a controller. The head accesses a disk. The actuator is configured to support the head and to move the head by action of a voice-coil motor in a substantially radial direction of the disk. The controller is also... Agent: Hitachi C/o Wagner Blecher LLP

20100328809 - Method for removing resist and for producing a magnetic recording medium, and systems thereof: In one embodiment, a method for removing a resist includes irradiating, with an UV light having a wavelength of less than about 240 nm, a structure having a resist on a pattern surface in an atmosphere having oxygen. The resist is used as a mask as it remains above the... Agent: Zilka-kotab, PC- Hit

20100328811 - Method of controlling reading or writing operation of disk drive: A method of controlling a writing or reading operation of a disk drive. The method includes determining whether a writing control signal or a reading control signal, and a flying height control signal to control a flying height of a head are in enabled states, and when the writing control... Agent: Stanzione & Kim, LLP

20100328812 - Magnetic disk device: According to one embodiment, a magnetic disk device includes a receiver, a storage module, a determining module, and a prescanner. The receiver receives a command from a host device. The storage module stores, with respect to each of divided areas formed by dividing the recording area of a recording medium... Agent: Knobbe Martens Olson & Bear LLP

20100328813 - Disk-enclosure cover for low-profile, hard-disk drive: A disk drive. The disk drive includes a head, a motion mechanism, and a controller. The head is configured to access a disk configured to store data. The motion mechanism is configured to move the head. The controller is configured to determine a seek direction when an error occurred; and,... Agent: Hitachi C/o Wagner Blecher LLP

20100328814 - Control apparatus, method of controlling apparatus and computer-readable recording medium: A control apparatus connectable to a memory unit for storing data, for controlling a first tape writing unit including a plurality of first tapes and a second tape writing unit including a plurality of second tapes so that the first and second writing units write same data stored in the... Agent: Fujitsu Patent Center Fujitsu Management Services Of America, Inc.

20100328815 - Magnetic disk device: Due to a difference in coefficient of linear expansion between the constituent material of the flange and the constituent material of the base of the feedthrough, the solder material which joins these materials is unable to withstand the thermomechanical loading that is generated between these heterogeneous materials during their actual... Agent: Crowell & Moring LLP Intellectual Property Group

20100328816 - Composite shield structure of pmr writer for high track density: Improved writability and a substantial reduction in adjacent track erasure are achieved by incorporating a composite shield structure in a PMR writer. There is a trailing shield formed a certain distance above the top surface of a write pole, a leading shield formed a certain distance below the bottom surface... Agent: Saile Ackerman LLC

20100328817 - Magnetic main write pole: A magnetic writer includes a write pole configured such that the easy magnetic axis is parallel to the vertical length direction of the write pole tip and to the ABS of the recording media. The write pole tip can be a multilayer structure comprising alternating magnetic and nonmagnetic layers with... Agent: Kinney & Lange, P.A.

20100328818 - Magnetic recording medium for perpendicular magnetic recording: A perpendicular recording medium having a perpendicular magnetic recording layer and a magnetically soft underlayer structure disposed beneath the recording layer. The soft underlayer structure includes at least first and second soft magnetic layers having different magnetic permeabilities to create a magnetic permeability gradient in the soft underlayer structure. One... Agent: Shumaker & Sieffert, P.A.

20100328819 - Disk drive device for rotating a disk: In a disk drive device, a recording disk is mounted on a rotor. A base has a bearing hole, the center of which is along the rotational axis of the rotor. A bearing unit rotatably supports the rotor with respect to the base, the bearing unit being glued to the... Agent: Fulwider Patton LLP

20100328820 - Dimple forming apparatus and dimple forming method: A dimple forming apparatus for forming dimple on a workpiece at a desired position comprises a base mould with a concave surface, a heating unit and a forming pin with a spherical surface. The base mould is configured to be positioned below the workpiece. The heating unit is configured to... Agent: Nixon & Vanderhye, PC

20100328821 - Hard disk drive: A hard disk drive includes an actuator arm pivoting over a disk around a pivot shaft as a center of rotation to allow a read/write head to access data on the disk, a bobbin provided at the opposite side to the read/write head with respect to a pivot shaft holder... Agent: Stanzione & Kim, LLP

20100328822 - Method and system for providing a barrier for a magnetoresistive structure utilizing heating: A method and system for providing a magnetic recording transducer is described. The method and system include providing a pinned layer for a magnetic element. In one aspect, a portion of a tunneling barrier layer for the magnetic element is provided. The magnetic recording transducer annealed is after the portion... Agent: Western Digital Technologies, Inc. Attn: Lesley Ning

20100328823 - Magnetoresistive reader with demagnetization flux guide: A magnetic reader comprises first and second shields oriented transversely to a media-facing surface, a magnetoresistive stack located between the first and second shields, and a flux guide. The magnetoresistive stack extends from a proximal end oriented toward the media-facing surface to a distal end oriented away from the media-facing... Agent: Kinney & Lange, P.A.

  
12/23/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100321810 - Disk drive configured to calculate head rebound distance: According to one embodiment, a search module searches for a timing when a moving direction of a head changes in order to detect a first timing when the head collides against a stopper of a ramp during a head unload operation and a second timing when the head rebounds as... Agent: Knobbe Martens Olson & Bear LLP

20100321811 - Drive life cycle management: Described are a method and apparatus that monitor tape drive health for tape drives in a tape library. The tape library generally contains a data base that is adapted to maintain functional status records for interactions that occur when a tape drive physically engages a tape cartridge. More specifically, errors... Agent: Spectra Logic Corporation

20100321812 - Proximity detection method for magnetic head and recording medium: Touchdown is detected between an R/W head and disk by determining the variance in the frequency domain of a baseline position error signal (PES) and a PES measured after incrementally increasing the DFH control signal. To quantify the variance in the frequency domain, a discrete Fourier transform of the baseline... Agent: Patterson & Sheridan, L.L.P.

20100321813 - System, method, and apparatus for performing metrology on patterned media disks with test pattern areas: Techniques for performing metrology on magnetic media disk formations that are arranged in curvilinear patterns are disclosed. Small integrated test patterns having rectangular periodicity are integrated among the concentric circles of patterned media formations. The test patterns cover only very small areas of the disk so as to not significantly... Agent: Larson Newman & Abel, LLP

20100321814 - Electrical lap guides and methods of using the same: An electrical lap guide having a first layer, the first layer including a material having a first resistivity, the first layer having first and second contact regions for electrically connecting the electrical lap guide to electrical leads; a second layer, the second layer including a material having a second resistivity,... Agent: Campbell Nelson Whipps, LLC

20100321816 - Magnetic head and disk apparatus provided with the same: According to an embodiment, a magnetic head of a disk apparatus includes a recording element, a reproduction element, and a heater configured to thermally expand the elements toward the recording medium side. The recording element and reproduction element are configured in such a manner that when a recording current of... Agent: Knobbe Martens Olson & Bear LLP

20100321815 - Notched pole design for hamr recording: A magnetic writer comprises a write pole and a near field transducer. The write pole has a leading edge, a trailing edge and a notch at the leading edge of the write pole. The near field transducer produces near field radiation. The near field transducer positioned in front of or... Agent: Kinney & Lange, P.A.

20100321817 - Magnetic disk drive and data rewrite methods: In one embodiment, a magnetic disk drive includes a magnetic disk having data tracks, a magnetic head, a motion mechanism for moving the magnetic head, and a controller. The controller adds a value to a rewrite parameter for a rewrite region based on a number of writes to data tracks... Agent: Zilka-kotab, PC- Hit

20100321818 - Method and apparatus utilizing shock sensors on storage devices: A data storage system with a controller that receives shock data from a shock detection sensor and methods utilizing such a controller are provided. The data storage system controller receives information or signals regarding shock events from a shock sensor, enabling the data storage system controller to take remedial action.... Agent: Dot Hill Systems Corporation

20100321819 - Disk device: In a positioning control system for a head of a magnetic disk device etc, a frequency of a disturbance oscillation having a specific oscillation component whose amplitude changes with a head position, is selected as a target frequency. Next, a resonance filter is so designed that it has a resonance... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100321820 - Nano-lithography with rotating target and servo-positioned tip: The preferred embodiments of the present invention are devices and processes for producing high resolution lithography or pattern formation on the nanometer scale, using a voltage-biased probe that is slider-mounted along with, or separate from but linked to, a magnetic read head within a HDD mechanism. The probe is guided... Agent: Saile Ackerman LLC

20100321821 - Disk device and aspiration filter used therefor: According to an embodiment, a disk device includes a housing configured to contain therein a disk-shaped recording medium, a drive section configured to rotate the recording medium, a head configured to subject the recording medium to information processing, and an aspiration filter arranged inside the housing, including a casing including... Agent: Knobbe Martens Olson & Bear LLP

20100321823 - Bearing apparatus, spindle motor, and disk drive apparatus: A bearing apparatus includes a shaft, a thrust cup including an annular potion and a cylindrical portion, a rotating member including a through hole defined therein, and a lubricating oil. A second gap defined between a lower surface of the rotating member and an upper surface of the annular portion... Agent: Nidec Corporation C/o Keating & Bennett, LLP

20100321822 - Manufacturing method of thin-film magnetic head, wafer for thin-film magnetic head and thin-film magnetic head: A manufacturing method of a thin-film magnetic head, includes a step of forming many thin-film magnetic heads arranged along row and column directions on a wafer, each of the thin-film magnetic heads having a read head element, a write head element, and pairs of probe-use pads electrically connected with the... Agent: Frommer Lawrence & Haug LLP

20100321824 - Magnetic recording head having secondary sub-gaps: A magnetic head and method for making same which can be used for formatting or writing servo tracks or data on a tape. In one example, the magnetic head may include a magnetic thin film layer; at least one gap defined in the magnetic thin film layer; and at least... Agent: Dorsey & Whitney LLP Intellectual Property Department

20100321825 - Magnetic writer with multi-component shielf: A writer comprises a main pole, a write gap and a write shield. The main pole has a main pole tip for emitting magnetic flux. The write gap is adjacent the main pole tip along a center axis of the writer. The write shield is spaced from the main pole... Agent: Kinney & Lange, P.A.

20100321826 - Magnetic recording medium and manufacturing method of the magnetic recording medium: It is an object to manufacture magnetic recording media with the high recording density. Since nonmagnetic portions (8) with a predetermined pattern are formed in a recording auxiliary layer (4) formed on a magnetic recording layer (3), it is possible to actualize a magnetic recording medium where magnetic portions (7)... Agent: Sughrue Mion, PLLC

20100321828 - Method and apparatus for active control of spacing between a head and a storage medium: A slider having a slider body is provided. An electrical connection is coupled to the slider body. A first actuator is coupled to the electrical connection and adapted to displace a first portion of the slider body. Additionally, a second actuator is coupled to the electrical connection and adapted to... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100321827 - Slider with stabilizing contact finger: A slider includes a slider body having an air bearing surface, a first contact finger, and a transducing head. The first contact finger extends from the slider body and has a contact surface area of between about 2 square microns to about 20 square microns. The transducing head is supported... Agent: Kinney & Lange, P.A.

20100321829 - Slider bond pad with a recessed channel: A slider includes a slider body and a bond pad. The bond pad is positioned on the slider body and has a bonding surface with a recessed channel for directing solder flow.... Agent: Intellectual Property Group Seagate Technology Files

20100321830 - Slider body with selective hard component removal: A slider is formed of a two-phase material having a first component and a second component that is harder than the first component. A media-facing surface is formed on two-phase material, with a leading edge extending transversely from the media-facing surface. The second component is selectively removed from the two-phase... Agent: Kinney & Lange, P.A.

20100321831 - Write pole fabricated using a carbon hard mask and method of making: A magnetic writer comprises a write pole, a substrate and a non-magnetic, oxygen-free buffer material. The write pole has a leading edge, a trailing edge, a first side and second side. The substrate is at the leading edge of the write pole. The non-magnetic, oxygen-free buffer material is located between... Agent: Kinney & Lange, P.A.

20100321832 - Tolerance ring assembly: A tolerance ring has a band with outwardly extending corrugated protrusions forming waves that engage an outer surface of a shaft. At one end of the tolerance ring is an inwardly flared guide surface extending axially and radially from the band. The guide surface acts as a tapered entrance to... Agent: Larson Newman & Abel, LLP

20100321833 - Tolerance ring assembly: A tolerance ring has a band (16) with outwardly extending corrugated protrusions forming waves (2) which engage a surface (8) of the bore (4) in a housing (5). At one end of the tolerance ring is an outwardly flared guide surface (15) extending axially from the band (16). The guide... Agent: Larson Newman & Abel, LLP

20100321834 - Head, head suspension assembly, and disk drive provided with the same: According to an embodiment, a head includes a slider and a head portion on the slider. A facing surface of the slider includes a negative-pressure cavity defined by a recess in the facing surface, a leading step portion on an upstream side of the negative-pressure cavity, a pair of side... Agent: Knobbe Martens Olson & Bear LLP

20100321835 - Self-aligned, trailing edge partial side shield and method of making: A magnetic writer includes a write pole, a first partial shield and a second partial shield. The write pole has a leading edge, a trailing edge, a first side and a second side. The first partial side shield is located on the first side of the write pole, and the... Agent: Kinney & Lange, P.A.

  
12/16/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100315737 - Control device, control method, and information storage apparatus: A control device includes an acquisition section which acquires a reading signal from a head under plural heat amounts, an computation section which computes plural kinds of characteristic values representing characteristics of the reading signal for each of the plural generated heat amounts by using at least one kind of... Agent: Greer, Burns & Crain

20100315736 - Multilayered waveguide having protruded light-emitting end: A waveguide is provided, in which the optical coupling efficiency to a light source is sufficiently high, and the light-emitting spot center is stably provided at the intended position. The waveguide comprises a multilayered structure in which refractive indexes of layers having a surface contact with each other are different... Agent: Frommer Lawrence & Haug LLP

20100315735 - Plasmon antenna with magnetic core for thermally assisted magnetic recording: A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the maximum gradient of the magnetic recording field... Agent: Saile Ackerman LLC

20100315738 - Motor control device and disk drive device: The objective of this invention is to provide a motor control device, and a disk drive device using the same, in which during emergency operation it is possible to supply necessary power to the motor while limiting enlargement of the circuit area. During the retraction operation, control is performed to... Agent: Texas Instruments Incorporated

20100315739 - Apparatus and method to adjust the orientation of a read head to correct for dynamic skew: A method to adjust the orientation of a read head comprising a first read element and a second read element, wherein the first read element and the second read element are separated by a distance, wherein the method moves a sequential information storage medium adjacent to the read head, determines... Agent: Dale F. Regelman Quarles & Brady, LLP

20100315740 - Apparatus and method to rotate a read/write head: A method is presented to rotate a read/write head rotatable along a first axis and comprising a first assembly having a first servo element and a second servo element. The method moves a sequential information storage medium adjacent to the read/write head along a second axis, wherein the second axis... Agent: Dale F. Regelman Quarles & Brady, LLP

20100315741 - Perpendicular magnetic recording head: A non-magnetic protruding layer protruding from a main magnetic pole layer (tip portion) toward an air bearing surface side is formed on both sides of the tip portion in a writing track width direction. The non-magnetic protruding layer is located closer to a recording medium than the tip portion during... Agent: Nixon & Vanderhye, PC

20100315742 - Bearing apparatus, spindle motor, and disk drive apparatus: In a bearing apparatus, a first cup portion defining a portion of a stationary portion of a bearing apparatus includes a circular plate portion and a cylindrical portion projecting downward from an outer edge portion of the circular plate portion. A rotating portion of the bearing apparatus includes an annular... Agent: Nidec Corporation C/o Keating & Bennett, LLP

20100315743 - Magnetic read/write head substrate: A substrate for a magnetic read/write head is disclosed. The substrate can reduce detachment of crystal grains when unexpected vibrations or impacts are applied. The substrate may be machined when the substrate is cut into strips or a flow path surface recess is formed to produce the magnetic read/write head.... Agent: Birch Stewart Kolasch & Birch

20100315746 - Head gimbal assembly and fixing method of base plate and carriage arm: According to one embodiment, a head gimbal assembly includes: base plate body; flexure; through hole passing through the base plate body; cylindrical base that upstands from the front surface of the base plate body, and has a first inner diameter; a cylindrical flange that continues to the base around the... Agent: Knobbe Martens Olson & Bear LLP

20100315745 - Protective layer on gimbal for scratch mitigation: A head gimbal assembly includes a gimbal, a slider, and a polymer layer. The gimbal comprises a metal layer, and the metal layer of the gimbal defines a gimbal mounting portion for attachment to a metallic load beam and a gimbal tongue extending from the gimbal mounting portion. The slider... Agent: Intellectual Property Group Seagate Technology Files

20100315744 - Slider-gimbal scratch mitigation: A head gimbal assembly for use with a load beam includes a gimbal, a slider for carrying a transducing head, and first and second tabs. The gimbal is configured to be supported by the load beam, and includes a gimbal tongue. At least a portion of the slider is secured... Agent: Kinney & Lange, P.A.

20100315747 - Magnetic head and disk drive provided with the same: According to an embodiment, a magnetic head for perpendicular recording, includes a slider including a facing surface opposed to a recording medium, and a head portion on the slider and configured to perform information processing for the recording medium. The head portion includes a main pole configured to apply a... Agent: Knobbe Martens Olson & Bear LLP

  
12/09/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100309574 - Detecting ramp load/unload operations: A method for detecting ramp load/unload operations is disclosed. The method includes measuring a signal value generated by a transducer element during either a ramp unload operation or a ramp load operation in a data storage device. The method further includes analyzing the signal value to determine whether the ramp... Agent: Seagate Technology LLC

20100309575 - Hard disk driving circuit and method of driving spindle motor: A hard disk driving circuit for reducing a maximum amount of current for driving a spindle motor, and a method of driving the spindle motor. The hard disk driving circuit include spindle motor, a spindle motor driving circuit driving the spindle motor, a control circuit controlling the spindle motor driving... Agent: Stanzione & Kim, LLP

20100309579 - Dual stage head actuator assembly for tape drive: An actuator assembly (22) for positioning a head (16) of a tape drive (10) relative to a storage tape that moves along a tape path (24) includes a first actuator (228), a second actuator (230) and a controller (26). The actuators (228, 230) move the head (16) in a direction... Agent: James P. Broder Roeder & Broder LLP

20100309578 - Method and apparatus for estimating flying height in a hard disk drive: This application discloses a hard disk drive and operates it based upon using a first and third harmonic amplitude generated from reading a repeated pattern of bits written to a track on a disk surface. Both amplitudes are used to create a first data set and the third harmonic amplitude... Agent: Gss Law Group

20100309577 - Microwave-assisted magnetic recording with collocated microwave and write fields: Methods and devices are provided for microwave-assisted magnetic recording with collocated microwave and write fields. An illustrative device includes a magnetic write pole and one or more alternating-field components. The magnetic write pole is configured for providing a magnetic write field. The one or more alternating-field components are disposed to... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100309576 - Patterned media magnetic recording disk drive with write clock phase adjustment for write head track misregistration: A patterned-media magnetic recording disk drive has compensation for write head track misregistration (TMR) from the track centerline. As the disk rotates, the read head detects angularly spaced servo sectors and generates a position error signal (PES) which is used by the servo control system to maintain the read head... Agent: Thomas R. Berthold

20100309580 - Perpendicular magnetic recording medium having fcc seed layers: According to one embodiment, a perpendicular magnetic recording medium includes at least one soft magnetic underlayer above a substrate, a seed layer above the at least one soft magnetic underlayer, an intermediate layer above the seed layer, a magnetic recording layer above the intermediate layer, and an overcoat layer above... Agent: Zilka-kotab, PC- Hit

20100309581 - Insertion under read shield for improved read gap actuation in dynamic flying height: A read/write head is disclosed wherein a non-magnetic layer made of a metal is inserted in the read head on a side opposite to the S1 shield with respect to the sensor. The non-magnetic layer is preferably Cu and is recessed from the ABS to prevent corrosion. A preferred design... Agent: Saile Ackerman LLC

20100309582 - Recording medium cartridge and takeout management system: A recording medium cartridge includes: a recording medium that is a magnetic tape recording information; a reel body including a central shaft that takes up the recording medium and two frame plates that sandwich the taken up recording medium and face each other in a direction along the central shaft;... Agent: Staas & Halsey LLP

20100309583 - Methods, systems and apparatus for reducing the effects of tape dimensional stability: A method, system, apparatus, and computer readable medium storing instructions for recording data tracks and a method and system for reading data tracks. For recording data tracks, virtual boundary of a first data track recorded on the storage medium is determined. The recording element is positioned based on the determined... Agent: Baker Botts L.L.P.

20100309584 - Magnetic recording medium and manufacturing method of the same: To provide a magnetic recording medium enabling excellent magnetic recording reproduction characteristics to be exhibited with the spacing loss reduced and a manufacturing method of the medium, a method of manufacturing a magnetic recording medium of the invention is to manufacture a magnetic recording medium having a magnetic recording layer... Agent: Sughrue Mion, PLLC

20100309585 - Head slider and magnetic disk device: A head slider is capable of restricting deformation of a medium-facing surface, and includes heat generating elements located at a distance from a read/write head in a Y direction corresponding to the radial direction of a disk medium. A width of the heat generating element in a Z direction is... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100309586 - Slider air bearing for disk drives: A slider designed to reduce fly height sigma in a plurality of fly media is provided. The slider includes an air bearing surface, a front shallow step pad and a rear shallow step pad that are at a first level deeper than the air bearing surface. The slider further includes... Agent: Hitachi C/o Wagner Blecher LLP

20100309587 - Fluid dynamic bearing, spindle motor having the fluid dynamic bearing, and storage apparatus having the spindle motor: A fluid dynamic bearing is configured that a distance L1 from an annular region of a cover member along a direction of an axis of rotation to a first thrust bearing surface of a radial bearing member, and a distance L2 from a stopper surface of a stopper portion to... Agent: Carrier Blackman And Associates

20100309588 - Turntable and method for manufacturing the same: A turntable for a storage disk drive apparatus includes a plate member made of a ferromagnetic material and a central resin member arranged at the center of the plate member and provided with an outer peripheral portion positioned above the plate member. The central resin member includes claws extending downwards... Agent: Westerman, Hattori, Daniels & Adrian, LLP

  
12/02/2010 > patent applications in patent subcategories. patent applications/inventions, industry category

20100302666 - Detecting a periodic sequence of servo signals: A system and method are disclosed for detecting a periodic sequence. A value detector module detects a plurality of values of a periodic sequence. In one embodiment, a transformation module transforms the plurality of values into transformed values. A confinement module confines the values to a limited set of confined... Agent: Kunzler Needham Massey & Thorpe

20100302667 - Detection of defective tape drive by aggregating read error statistics: A plurality of tape drives writes a plurality of indicators corresponding to a plurality of data units on a tape, wherein an indicator indicates which tape drive of the plurality of tape drives has written a corresponding data unit on the tape. Each of the plurality of tape drives generates... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20100302664 - Disk drive data storage systems and methods using backup power source charged by spindle motor: A data storage system includes data storage including at least one data storage disk driven by a spindle motor and a control circuit coupled to the data storage and configured to be coupled to a main power source and a backup power source. The control circuit is configured to detect... Agent: Myers Bigel Sibley & Sajovec

20100302665 - Method for measuring optimum seeking time and inspection apparatus using the same: The present invention provides a method for measuring an optimum seeking time and an inspection apparatus using this method capable of measuring and setting an optimum seeking time for inspection of a magnetic disk or magnetic head. The method samples average level differences of sector-wise read signals in positive and... Agent: Brundidge & Stanger, P.C.

20100302663 - Method of measuring non-coherent runout for a disk drive: In a disk drive, a modified adaptive runout compensation algorithm is employed to measure non-coherent repeatable runout (RRO) of a track. The adaptive runout compensation algorithm is used to control the transducer head to follow the average RRO of adjacent tracks during the process of computing correction factors for non-coherent... Agent: Patterson & Sheridan, L.L.P.

20100302662 - Testing method of wafer with thin-film magnetic heads and manufacturing method of thin-film magnetic head: A testing method of a wafer provided with a plurality of thin-film magnetic heads is provided. Each of the plurality of thin-film magnetic heads includes a main pole layer, a first test pad formed on the wafer and electrically connected with an extended top end section of the main pole... Agent: Oliff & Berridge, PLC

20100302668 - Parallel information processing on a hard disk drive: A method of how to perform parallel binary information processing on a hard disk drive with magnetic media is invented. Two or more recording heads synchronously and independently write the binary information in the form of “positive” or “negative” “pulses”. All previous information is erased. Then, the sensors synchronously read... Agent: Vladimir L. Safonov

20100302669 - Transducer design with a sensor close to write pole: A magnetic device includes a read sensor, a writer and a synchronization sensor. The magnetic device is configured for writing information to and reading information from a magnetic medium that includes a plurality of discrete magnetic bits. The writer includes a write element, a first return element magnetically coupled to... Agent: Kinney & Lange, P.A.

20100302670 - Disk drive: To provide a disk drive capable of inhibiting the occurrence of acoustic noise caused by a voltage pulse when the head is retracted using a speed control method using voltage obtained by rectifying a back electromotive force after the power source has been cut off from the rotation of a... Agent: Texas Instruments Incorporated

20100302671 - Magnetic recording device, head evaluation device, and write-pole-erasing evaluation method: According to one embodiment, a magnetic recording device includes a write controller to control such that writing first information having a same polarity throughout the first information in a predetermined region including a plurality of tracks in a recording medium, writing second information in a target track located within or... Agent: Knobbe Martens Olson & Bear LLP

20100302672 - Thermally-assisted magnetic recording head and thermally-assisted magnetic recording method: A magnetic recording head capable of a satisfying thermally-assisted magnetic recording without depending on the use of a near-field light generator is provided. The head comprises a waveguide and a main magnetic pole having a main pole tip. Further, at least a portion of the main pole tip is embedded... Agent: Oliff & Berridge, PLC

20100302673 - Disk drive device improved in stiffness of fluid dynamic bearing: A disk drive device includes a bearing unit and a drive unit. The bearing unit includes: a shaft; a sleeve configured to allow relative rotation, with the shaft as the axis; a flange projected in the radial direction of the shaft and configured to rotate integrally with the shaft; a... Agent: Fulwider Patton LLP

20100302674 - Apparatus and method for stabilizing slider flying height over a discrete track media disk surface in a hard disk drive: This application discloses a hard disk drive and a disk employing Discrete Tracks each including a land with a groove at a first depth with sectors of each track separated by servo pattern wedges with a variable second land and a variable second groove possessing widths and a second depth... Agent: Gss Law Group

20100302675 - Storage medium and method and program for detecting track position of storage medium: According to one embodiment, a storage medium that stores position information indicating positions of a plurality of tracks in a radial direction in the tracks, wherein the position information includes: a first pattern in which a feed angle indicating a phase difference between the tracks is an angle obtained by... Agent: Knobbe Martens Olson & Bear LLP

20100302676 - Circuits that use a postamble signal to determine phase and frequency errors in the acquisition of a preamble signal: In a servo control loop, phase detection between a clock signal and servo burst fields on a movable storage media is carried out with compensation for phase error and frequency error in the timing of servo burst fields.... Agent: David K. Lucente Seagate Technology LLC Intellectual Property Dept. - Col2lgl

20100302677 - Apparatus and method to adjust the positions of a write element and read element disposed on a read/write head: A method to adjust the positions of a write element and read element disposed on a read/write head comprising a first assembly independently moveable along a first axis and comprising a first servo element, a second servo element, and the write element disposed between the first servo element and the... Agent: Dale F. Regelman Quarles & Brady, LLP

20100302678 - Temperature control within disk drive testing systems: A disk drive test slot thermal control system includes a test slot. The test slot includes a housing and an air mover (e.g., a blower or a fan). The housing includes an outer surface, and an internal cavity. The internal cavity includes a test compartment for receiving a disk drive... Agent: Fish & Richardson P.C.

20100302679 - Patterned media and method of manufacturing the same, and magnetic recording apparatus: A patterned media has a substrate, and a magnetic recording layer on the substrate including protruded magnetic patterns and a nonmagnetic material filled in between the protruded magnetic patterns. In the patterned media, a depth Db and a depth Da, which are defined that Db is a depth from a... Agent: Nixon & Vanderhye, PC

20100302680 - Perpendicular magnetic write head and magnetic write device: A perpendicular magnetic write head includes: a magnetic pole having an end face on an air bearing surface; and side shield layers each having an end face on the air bearing surface, and arranged on both sides, in a write track width direction, of the magnetic pole with a side... Agent: Oliff & Berridge, PLC

20100302681 - Perpendicular magnetic recording head and method of manufacturing the same: A method of manufacturing a perpendicular magnetic write head capable of precisely narrowing a side gap is provided. A tip portion having a cross sectional geometry of an inverted trapezoid is formed in an opening portion of a non-magnetic layer and thereafter, the non-magnetic layer is etched with the tip... Agent: Nixon & Vanderhye, PC

20100302682 - Magnetic recording media having recording regions and separation regions that have different lattice constants and manufacturing methods thereof: According to one embodiment, a magnetic recording medium includes a magnetic recording layer formed above a substrate, the magnetic recording layer being comprised of an alloy having a crystal structure, recording tracks formed on the magnetic recording layer in nearly concentric circular shapes, wherein the recording tracks are comprised of... Agent: Zilka-kotab, PC- Hit

20100302683 - Magnetic recording media having recording regions and separation regions that have different lattice constants and manufacturing methods thereof: A magnetic head slider according to the present invention comprises: a slider body including either a write head element or a read head element or both the write head element and the read head element; a seed layer provided on an air bearing surface of the slider body, the seed... Agent: Nixon & Vanderhye, PC

20100302684 - Asymmetrical air bearing surface for a head slider in hard disk drives: A method and apparatus for a head slider air bearing surface (ABS) in hard disk drives that mitigate fly height deviations. The invention mitigates these problems by providing an ABS of the head slider with elongated asymmetrical features that extend substantially parallel to the direction of the airflow caused by... Agent: Patterson & Sheridan, L.L.P.

20100302685 - Magnetic head slider having ultra thin base layer with group 6a element and protective layer: A magnetic head slider according to the present invention comprises: a slider body including either a write head element or a read head element or both the write head element and the read head element; a seed layer provided on an air bearing surface of the slider body, the seed... Agent: Nixon & Vanderhye, PC

20100302686 - Disk drive having reduced magnetic flux leakage: In a voice coil motor (VCM) of a disk drive, a coined feature formed on a ferromagnetic plate reduces magnetic flux leakage from a disk drive without increasing the weight of the drive or adding complexity to the manufacturing process. The coined feature is shaped and positioned to alter the... Agent: Patterson & Sheridan, L.L.P.

20100302687 - Piezoelectric element with electrode and head suspension: A piezoelectric element with electrode is capable of preventing an assembling error. The piezoelectric element includes a piezoelectric body configured to deform according to polarity in response to a voltage applied thereto, electrodes formed on surfaces of the piezoelectric body, respectively, a non-electrode part formed on at least one of... Agent: Jordan And Hamburg LLP

20100302688 - Magnetoresistive effect head and magnetic recording/playback device: According to one embodiment, a magnetoresistive effect head includes a lower magnetic shield provided on a substrate, a magnetoresistive effect film laminated from a pinned layer with a pinned direction of magnetization, an intermediate layer, a free layer having a varying direction of magnetization controlled by an applied external magnetic... Agent: Zilka-kotab, PC- Hit

20100302690 - Spin-torque magnetoresistive structures: Magnetoresistive structures, devices, memories, and methods for forming the same are presented. For example, a magnetoresistive structure includes a first ferromagnetic layer, a first nonmagnetic spacer layer proximate to the first ferromagnetic layer, a second ferromagnetic layer proximate to the first nonmagnetic spacer layer, and a first antiferromagnetic layer proximate... Agent: Ryan, Mason & Lewis, LLP

20100302689 - Bio-sensor with hard-direction field: A magnetic sensor for identifying small magnetic particles bound to a substrate includes a regular, planar orthogonal array of MTJ cells formed within or beneath that substrate. Each MTJ cell has a high aspect ratio and positions of stable magnetic equilibrium along an easy magnetic axis and positions of unstable... Agent: Saile Ackerman LLC

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