Dynamic magnetic information storage or retrieval inventions 07/08

20080180825 - Detection of servo data for a servo system: A servo system for detecting and demodulating servo data is disclosed. In illustrated aspects, a demodulation circuit or portion includes a correlator component configured to output a correlation of a sequence of equalized channel samples with a sequence of correlator weight derived based on at least one mapped channel sequence.... Agent: Westman Champlin & Kelly, P.A.

20080180826 - Method forming servo sync mark patterns and preventing write faults in hard disk drive: A method of forming a servo sync mark patterns on a disk is disclosed wherein alternating even-numbered and odd-numbered tracks are marked with a first servo sync mark pattern on the even-numbered tracks, and a second servo sync mark pattern, different from the first servo mark pattern, on the odd-numbered... Agent: Volentine & Whitt PLLC

20080180827 - Binary anisotropy media: A magnetic microstructure comprising (i) a magnetic storage layer having a magnetic easy axis perpendicular to a film plane of the storage magnetic layer; (ii) a magnetic assist layer having a magnetic easy axis in the film plane; and (iii) a phase transition interlayer between the magnetic storage layer and... Agent: Kirkpatrick & Lockhart Preston Gates Ellis LLP

20080180828 - Back emf reduction in a storage drive using pulse width modulation in a closed loop motor control system: A storage drive implements a method for a BEMF voltage reduction during a deceleration period of an electric motor of the storage drive. In operation, the electric motor is disconnected from a power supply during an entirety of the deceleration period of the electric motor to prevent any flow of... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20080180829 - Drive apparatus, method of informing possibility of handling and operating recording medium, control method of handling and operating recording medium, and recording medium: A drive apparatus that handles and operates a recording medium attached with a memory tag, the drive apparatus include: a recording medium mounting part on which the recording medium is mounted; an information readout part configured to read information out of a memory tag attached to a recording medium before... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20080180830 - Emergency unload verification device and storage apparatus: An emergency unload verification device verifies whether or not a control unit to control an emergency unload operation in a storage apparatus is abnormal. A storage section stores previous waveform information of a control signal to be sent out by the control unit for controlling the emergency unload operation. A... Agent: Greer, Burns & Crain

20080180831 - Cartridge reel lock release sensing systems and methods: A tape drive having a reel release sensing procedure and system is provided. In one example, the tape drive includes a motor coupled to a reel driver for driving a reel of a storage device, a sensor for detecting movement associated with the reel driver, and a controller. The controller... Agent: Morrison & Foerster LLP

20080180832 - Bit recording process on ferroelectric medium using probe or small conductive structure and recording medium thereof: A method of recording bits on a ferroelectric medium using a scanning probe or a small conductive structure and a recording medium thereof, in which bit sizes can be decreased to increase data recording density as well as to reduce losses in reproduction signals. The method includes applying switching voltages... Agent: Sughrue Mion, PLLC

20080180833 - Method and apparatus for spacing control in a disk drive: According to one embodiment, a disk drive includes a head, a shock sensor, and a controller. The head has a heating element for controlling the spacing between a disk medium and the head. When the shock sensor detects an impact applied to the disk drive, the controller controls the heating... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080180834 - Servo signal recording method, servo signal recording apparatus, and magnetic recording medium: The present invention is a servo signal recording method for recording a servo signal on a magnetic tape having a data band and a servo band, wherein erasure is performed based on a pulse having a duty ratio varied so that a driving time of the AC erasing head with... Agent: Birch Stewart Kolasch & Birch

20080180835 - Method and apparatus intelligently adapting to environmental conditions inside and outside a hard disk drive: Hard disk drive (HDD) including humidity sensor measuring interior and second humidity sensor measuring exterior with door actuator controlling door for mass transfer between interior and exterior based upon determination of whether or not to transfer. HDD may further include and use temperature sensors for interior and/or exterior to further... Agent: Gregory Smith & Associates

20080180836 - Rotating electrical transfer components: The transfer apparatus is directed toward electrical transfer components providing an electrical connection to a rotating object. The transfer apparatus includes a stator base mounted proximate to the rotating object. An axle rotatably mounts at least one conductive disk to the stator base. The conductive disk is held against the... Agent: Hayes, Soloway P.C.

20080180837 - Spindle motor hub, disk pack, and hard disk drive having the same: A spindle motor includes a spindle motor hub that supports one or more disks, and has a contact area reduction portion that minimizes the area of contact between the hub and a disk when the disk is mounted to the hub. The spindle motor hub includes a hub body having... Agent: Volentine & Whitt PLLC

20080180839 - Magnetic disk drive: In a patterned perpendicular magnetic recording medium, embodiments of the present invention provide a magnetic head in which magnetic field to be applied to adjacent tracks can be suppressed and a recording device equipped with the magnetic head. In one embodiment of the present invention, a sum of a width... Agent: Townsend And Townsend And Crew LLP

20080180838 - Perpendicular magnetic recording head: A perpendicular magnetic recording (PMR) head is provided which records data in a PMR medium. The PMR head includes a main pole having an end portion disposed on an air bearing surface (ABS) that is opposite to the PMR medium; a return yoke spaced apart from the main pole; a... Agent: Sughrue Mion, PLLC

20080180840 - Thin-film magnetic head, head gimbal assembly, and hard disk system: There is a thin-film magnetic head provided, which comprises a perpendicular recording head portion including a thin-film coil adapted to generate a magnetic flux, and a main magnetic pole layer that extends rearward from a recording medium opposite plane facing a recording medium and has a main magnetic pole adapted... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080180841 - Tape roller guide with integral recording head: An integral recording head, for use in a linear tape drive system, includes a circumferentially grooved roller guide assembly and a recording head actuator assembly. The circumferential groove feature is incorporated on the surfaces of the roller guide assembly, and provides a substantial frictional contact force that acts to reduce... Agent: Shimokaji & Associates, P.C.

20080180842 - Object storage device having shaking function: The present invention relates to an object storage device having shaking function having a vertically situated storage cassette, which has multiple object storage points situated one on top of another, and having a drive unit functionally connected to the storage cassette via a first drive connection, comprising at least one... Agent: Baker & Hostetler LLP

20080180844 - Magnetic disk manufacturing support method and magnetic disk manufacturing method: A defect inspection is performed for each of glass substrates by a surface defect detector. The distance from the center of the glass substrate to a detected defect, as a radius of a nonmagnetic region to be formed circular, is recorded along with an ID assigned to the glass substrate.... Agent: Sughrue Mion, PLLC

20080180843 - Perpendicular magnetic recording medium and hard disk drive using the same: Embodiments of the present invention provide a perpendicular magnetic recording medium having an improved writing property due to the exchange spring effect and capable of stable production. According to one embodiment, a perpendicular magnetic recording medium includes a non-magnetic substrate; an adhesion layer; a soft magnetic underlayer; a seed layer;... Agent: Townsend And Townsend And Crew LLP

20080180846 - Moving-slider microactuator for hard disk drive tracking servo: A microactuator substrate. The substrate includes a stroke amplifier for generating an amount of amplified motion converted from a force received thereon. The substrate also includes a rotating device coupled to the stroke amplifier and comprising supporting rotational springs. The rotating device is separate and independent from the stroke amplifier... Agent: Wagner Murabito & Hao LLP

20080180845 - Slider air bearing for disk drives: A head slider for a magnetic disk drive is provided. The head slider includes a leading edge, a trailing edge and a ramp structure for deflecting impact of the slider with a disk defect, the ramp structure comprising a leading end and a trailing end wherein the ramp structure is... Agent: Hitachi C/o Wagner Blecher LLP

20080180847 - Rail and slider system: In general, this invention is directed to a rail and slider system having residential and commercial organizational applications. In one aspect, the system comprises at least one rail and a slider mounted on the rail for sliding movement along the rail. The rail and slider have teeth which releasably engage... Agent: Senniger Powers LLP

20080180848 - Controlling bond pad migration in a direct access storage device: A slider assembly used in a direct access storage device includes electrically conductive bond pads formed on the slider body. A rigid and electrically non-conductive material surrounds and abuts the bond pads. The material and the bond pads form a planar surface. The material prevents the bond pads from migrating... Agent: Hitachi C/o Wagner Blecher LLP

20080180849 - Magnetic head support, manufacturing methods therefor, and magnetic disk device: According to an aspect of an embodiment, a method for manufacturing a magnetic head support having a piezoelectric device on a metal plate member comprises the steps of: providing a metal plate member; forming a piezoelectric layer of a piezoelectric material on the plate member at an elevated temperature; forming... Agent: Greer, Burns & Crain

20080180850 - Head suspension flexure with inline lead portions: An integrated lead head suspension flexure including a plurality of integrated leads each including at least one lead portion unbacked by the flexure spring metal layer and configured to be substantially inline with the general plane of the spring metal layer. The leads are disposed on a dielectric layer including... Agent: Faegre & Benson LLP Patent Docketing

20080180851 - Flexible printed circuit holding mechanism of hard disk drive and actuator assembly including the same: An FPC holding mechanism of an actuator assembly of a hard disk drive (HDD) includes an FPC holder protruding from an arm-mold of the actuator assembly, and an FPC clip that is mounted to the FPC holder so as to be rotatable relative to the FPC holder. The FPC holder... Agent: Volentine & Whitt PLLC

20080180853 - Actuator latch apparatus and hard disk drive apparatus having the same: An actuator latch apparatus usable with a hard disk drive apparatus includes a latch lever disposed on a base to pivot thereon and having a first latch prevention portion to prevent pivoting of an actuator arm in a direction, the actuator arm having a bobbin formed at a rear end... Agent: Stanzione & Kim, LLP

20080180852 - Actuator latch system of hard disk drive: An actuator latch system of an HDD retains a swing arm in place when the magnetic head of the HDD is parked. The actuator latch system includes a rotatable latch lever that has a hook designed to absorb shock when the hook engages the swing arm. A rear end of... Agent: Volentine & Whitt PLLC

20080180854 - Method and apparatus for spring clip latch for retaining hard disk drive actuator onto bracket of flex circuit assembly: A latching mechanism for a flex cable bracket. The latching mechanism includes a position limiter. The position limiter prevents movement of an actuator assembly installed thereon. The latching mechanism also includes a spring clip. The spring clip has spring functionality and a cantilever beam to retain the actuator assembly when... Agent: Hitachi C/o Wagner Blecher LLP

20080180855 - 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 protrude from a second end of the voice coil motor, with the second... Agent: Nixon & Vanderhye, PC

20080180856 - Method and apparatus for a microactuator bonding pad structure for solder ball placement and reflow joint: An apparatus and method for a microactuator having a bonding pad having a solder ball retainer to decrease instances of solder ball movement. The method provides a substrate for the microactuator. A conductive layer above the substrate is provided. A bonding pad having a solder ball retainer is provided and... Agent: Hitachi C/o Wagner Blecher LLP

20080180859 - Magnetoresistive element and magnetic memory: A magnetoresistive element includes: a magnetization free layer having a first plane and a second plane located on the opposite side from the first plane, and having a variable magnetization direction; a magnetization pinned layer provided on the first plane side of the magnetization free layer, and having a pinned... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080180858 - Perpendicular magnetic write head and method of manufacturing perpendicular magnetic write head, and magnetic write device: Provided are a perpendicular magnetic write head capable of achieving the high performance and stability in the writing performance, and a method of manufacturing the same. On a trailing side of a main magnetic pole layer, disposed are a gap layer extending backward from an air bearing surface and an... Agent: Oliff & Berridge, PLC

20080180857 - Tunnel magnetoresistance effect film and magnetic device: The tunnel magnetoresistance effect film is a highly practical tunnel magnetoresistance effect film having a characteristic of serviceable negative MR ratio, which can be used at room temperature. The tunnel magnetoresistance effect film comprises: a tunnel barrier layer; and magnetic layers sandwiching the tunnel barrier layer. One of the magnetic... Agent: Greer, Burns & Crain

20080180860 - Magnetic thin film and magnetoresistance effect element: In the magnetic thin film, a magnetization direction of a ferromagnetic layer, e.g., a pinned layer, can be securely fixed. The magnetic thin film comprises: an antiferromagnetic layer; and the ferromagnetic layer. The antiferromagnetic layer is composed of a manganic antiferromagnetic material, and a manganese (Mn) layer is formed between... Agent: Greer, Burns & Crain

20080180861 - Magnetic recording apparatus: Embodiments of the present invention achieve a high linear recording density and a high track recording density to thereby improve the areal recording density in a perpendicular magnetic recording apparatus having a magnetic head that includes a trailing shield and side shields around a main magnetic pole piece. According to... Agent: Townsend And Townsend And Crew LLP

20080180865 - Cpp magnetic recording head with self-stabilizing vortex configuration: A CPP MTJ or GMR read sensor is provided in which the free layer is self-stabilized by a magnetization in a circumferential vortex configuration. This magnetization permits the pinned layer to be magnetized in a direction parallel to the ABS plane, which thereby makes the pinned layer directionally more stable... Agent: Saile Ackerman LLC

20080180864 - Magnetic encoder having a stable output property with unsaturated magnetic sensor: The present invention provides a magnetic sensor suitable for high resolution and having high reliability by achieving stable output even at the occurrence of variations in a gap between a magnetic medium and the magnetic sensor, and a magnetic encoder using the magnetic sensor. The present invention uses a magnetoresistive... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080180863 - Magnetic tunnel transistor with high magnetocurrent: A magnetic tunnel transistor (MTT) having a pinned layer that has no antiferromagnetic material in an active area of the sensor. The MTT can include a layer of antiferromagnetic material that is exchange coupled with the pinned layer in an area outside of the active area of me sensor, such... Agent: Zilka-kotab, PC- Hit

20080180862 - Method of production of a magnetoresistance effect device: A magnetoresistance effect device including a multilayer structure having a pair of ferromagnetic layers and a barrier layer positioned between them, wherein at least one ferromagnetic layer has at least the part contacting the barrier layer made amorphous and the barrier layer is an MgO layer having a highly oriented... Agent: Buchanan, Ingersoll & Rooney PC

20080174896 - Signal compressing apparatus: An input signal is quantized into a quantization-resultant signal. The quantization-resultant signal is compressed into a compression-resultant signal. The compression-resultant signal is formatted into a formatting-resultant signal corresponding to a predetermined format for a digital recording disc. The formatting-resultant signal includes segments corresponding to user data areas prescribed in the... Agent: Connolly Bove Lodge & Hutz LLP

20080174897 - Apparatus, system, and method for timing based servo tape formating: An apparatus, system, and method are disclosed for formatting a timing-based servo pattern on a magnetic tape. A first write head concurrently writes a base number of stripes to a plurality of first stripe patterns with a first and third element and writes the base number of stripes to a... Agent: Brian C. Kunzler Kunzler And Associates

20080174898 - Media storage system with modular robotic elements: Embodiments include methods, apparatus, and systems for media storage systems with plural robotic elements. One embodiment is a media storage system that has storage libraries connected together to form a stack. Each storage library includes a storage location for holding plural data cartridges and a picker for transporting the data... Agent: Hewlett Packard Company

20080174900 - High-order hybrid actuator controller: A method of providing a control output by selecting a controller to an actuator is discussed. A first controller having an estimator-compensator architecture is selected if the actuator is in a settle stage. A second controller having an architecture other than that of the first controller is selected when the... Agent: Seagate Technology Llc C/o Westman Champlin & Kelly, P.a.

20080174899 - Recordable disc and motor: A device comprises a recordable disc, a substrate adjacent to the recordable disc, and an actuation mechanism fixed to the substrate. The recordable disc includes a base layer and a recordable layer on the base layer. Additional electrodes or magnetic components may be placed on the base layer to provide... Agent: Seagate Technology Llc

20080174901 - Actuator unit, driving device for information recording/reading head, information recording/reading apparatus, and method for driving the actuator unit: An actuator unit including a friction drive actuator, a driving device for information recording/reading head, an information recording/reading apparatus and a method for driving the actuator unit which can achieve both high precision and high speed is provided by waiting the residual vibration to attenuate or forcibly attenuating the residual... Agent: Sidley Austin LLP

20080174902 - Hard disk drive apparatus to control flying height of magnetic head and method thereof: A hard disk drive apparatus to control a flying height of a magnetic head and a method thereof are provided. The hard disk drive apparatus includes a disk, a magnetic head to read data from the disk or to record data on the disk, a flying height maintaining unit to... Agent: Stanzione & Kim, LLP

20080174903 - Storage device and control device: A storage device and a control device include a DSP 21, a DSP 22, and a Servo MPU 12 for controlling a position of a head with respect to a storage medium. The Servo MPU 12 instructs the DSP 21 and the DSP 22. The DSP 21 carries out calculation... Agent: Greer, Burns & Crain

20080174904 - Positioning system and method for a transducer head: In one embodiment of a system and method for positioning a transducer head, the transducer head includes a first group of elements for reading data from or writing data to a set of tracks on a storage medium, and a second group of elements for reading data from or writing... Agent: Brooks Kushman P.c. / Sun / Stk

20080174905 - Method and apparatus for recording data on a magnetic recording medium: A method for recording data on a magnetic recording medium is disclosed. When data are written to a target track Tn, the numbers of effects on tracks Tn−1 and Tn+1 adjacent to a target track are counted as Adjacent Track Interference (ATI) effect counts Cn−1 and Cn+1, respectively, to determine... Agent: Dillion & Yudell LLP

20080174908 - Adaptive temperature and altitude compensation for writing on disk drives: A hard disk drive that performs a write verify routine to determine optimal write parameters for the heads of the drive. The write verify routines are performed until a successful write operation has occurred. The write verify routine is disabled if there has been a predetermined number of previously acceptable... Agent: Irell & Manella LLP

20080174909 - Centrifugal machine: A centrifugal machine comprises a rotor drivable and rotatable by a motor while holding a specimen, and including a recording medium for recording data therein; a Peltier element, when a voltage is applied thereto, for controlling the temperature of the rotor; a recording head disposed at a position adjacent to... Agent: Mattingly, Stanger, Malur & Brundidge, P.c.

20080174910 - Disk drive and manufacturing method thereof: Embodiments of the present invention help to prevent leakage of low-density gas during low-density gas injection into a disk drive device and to perform low-density gas injection efficiently. In a hard disk drive (HDD) according to one embodiment of the present invention, an injection hole filter with a valve function... Agent: Townsend And Townsend And Crew LLP

20080174906 - Interconnect architecture for disc drive array: In general, the invention is directed to techniques for integrated interconnects with a set of disc drives. The interconnects allow for a set of disc drives to be positioned in an array; for example, as set of disc drives may be stacked to communicate with a device through a single... Agent: Seagate Technology Llc

20080174907 - Mems disc drive: A micro-electromechanical systems (MEMS) disc drive includes high-precision and integrated components to allow for increased functionality, robustness and reduced size as compared to currently produced disc drives. Integrating multiple subcomponents of the disc drive using batch processing provides low manufacturing costs. Furthermore, using MEMS techniques, new features can be added... Agent: Seagate Technology Llc

20080174911 - Perpendicular magnetic recording head: A perpendicular magnetic recording head is provided capable of suppressing the magnetic field attributable to the edge write phenomenon and improving resistance to an external magnetic field. The perpendicular magnetic recording head includes a magnetic layer that has a main magnetic pole on a surface facing a recording medium; a... Agent: Brinks Hofer Gilson & Lione

20080174912 - Tape reel, recording tape cartridge, take-up reel, pullout member, and drive device: The present invention provides a tape reel, a recording tape cartridge, a take-up reel, a pullout member and a drive device that can control fluctuation of a recording tape in the axial direction of a hub and can, even when the recording tape is thinned in accompaniment with an increase... Agent: Sughrue Mion, Pllc

20080174914 - Magnetic recording medium, recording/reproducing apparatus, and method of manufacturing a magnetic recording medium: On a magnetic recording medium, data track patterns and servo patterns are formed on one surface and another surface of a disk-shaped substrate by patterns including recording regions and non-recording regions. In the data track patterns on the one surface, the non-recording regions are formed at formation positions on the... Agent: Greenblum & Bernstein, P.L.C

20080174913 - Perpendicular recording discrete track medium and servo pattern magnetization method for same: A servo pattern magnetization method is provided, having full-amplitude servo signals, to eliminate the need for intensity modification and waveform shaping during servo signal reading, and to improve the precision of head positioning and enable an increase in track recording density. A servo pattern magnetization method for a perpendicular recording... Agent: Rossi, Kimms & Mcdowell LLP.

20080174915 - Recordable disc with fluid bearing features: A device comprises a fluid bearing including a textured fluid bearing surface and a second surface and a recordable disc. The recordable disc includes a substrate, a recordable media layer on the substrate, and at least one of the textured fluid bearing surface and the second surface. The device may... Agent: Seagate Technology Llc

20080174916 - Head slider, hard disk drive having the same, and method of controlling the height of the head slider: A hard disk drive has a disk, a spindle motor for rotating the disk, a head stack assembly including a swing arm and a head slider disposed at a leading end of the swing arm, and a controller operatively connected to the head slider. The head slider is positioned by... Agent: Volentine & Whitt Pllc

20080174917 - Resonant frequency separation for an actuator assembly of a disc drive: An actuator assembly is provided that includes a body portion, a first actuator arm assembly, a second actuator arm assembly, a first flexure assembly, and a second flexure assembly. Each of the first and second actuator arm assemblies projects from the body portion and has a distal end with different... Agent: Mccarthy Law Group

20080174918 - Method and system for writing and reading a charge-trap media with a probe tip: An embodiment of a system for storing information in accordance with the present invention comprises a media including a barrier layer, an isolation layer and a trapping layer disposed between the barrier layer and the isolation layer; and a tip adapted to inject a charge through the barrier layer and... Agent: Fliesler Meyer LLP

20080174919 - Disc drive head actuator: A disc drive head actuator includes a suspension structure and a slider integrated with the suspension structure. The actuator is one of at least two actuator assemblies batch-fabricated on a common substrate. The head actuator may be fabricated using mircofabrication techniques. The head actuator may have a reduced size, including... Agent: Seagate Technology Llc

20080174920 - Cpp type magneto-resistive effect device and magnetic disc system: The invention provides a giant magneto-resistive effect device (CPP-GMR device) having a CPP (current perpendicular to plane) structure comprising a spacer layer, and a fixed magnetized layer and a free layer stacked one upon another with said spacer layer interleaved between them, with a sense current applied in a stacking... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080174921 - Tunnel type magnetic sensor having fixed magnetic layer of composite structure containing cofeb film, and method for manufacturing the same: A second fixed magnetic layer is formed of a CoFeB layer of CoFeB and an interface layer of CoFe or Co provided in that order from the bottom. An insulating barrier layer composed of Al—O is formed on the second fixed magnetic layer. When a lamination structure composed of CoFeB/CoFe/Al—O... Agent: Brinks Hofer Gilson & Lione

20080170317 - Inspection head used for magnetic disc inspecting apparatus: An inspection head is used for an inspecting apparatus that inspects whether there is an abnormal projection on a disk surface having a first lubrication layer, and floats over the disk surface. The inspection head includes a floating surface covered with a second lubrication layer that is repellent to the... Agent: Greer, Burns & Crain

20080170316 - Method and apparatus for component level measurement of flying height for a head gimbal assembly for use in a hard disk drive: A method of using an optical test stand to perform both intensity-based and phase-based interferometry to create improved estimates of the flying height of a slider off of rotating disk surface, which are used to generate a three-dimensional map of the air bearing surface, crown and camber estimates, take-off and... Agent: Gregory Smith & Associates

20080170315 - Spectral analysis of a position error signal: The present disclosure is directed to spectral analysis of a position error signal. In a particular embodiment, the method includes analyzing a spectral content of a position error signal. The method also includes comparing the spectral content to a threshold. Further, the method includes determining a result based on the... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20080170318 - Magnetic recording medium, magnetic recording and reproducing apparatus, and method for manufacturing magnetic recording medium: The magnetic recording medium includes a substrate and a recording layer formed in a predetermined concavo-convex pattern over the substrate, and the recording layer includes recording elements each formed as a convex portion of the recording layer. Surface steps are formed in an inner area including a radially innermost portion... Agent: Oliff & Berridge, PLC

20080170319 - Integrated head for heat assisted magnetic recording: A magnetic recording apparatus includes a write element and an optical device for heating a portion of a magnetic medium. The optical device and the write element are arranged to generally prevent the write element from affecting the optical fields generated by the optical device.... Agent: Kinney & Lange, P.A.

20080170321 - Control device, control method, and storage apparatus: Upon correction, an amplitude measurement unit repeats a process of attaining a write heat state by a write clearance control unit and writing user data to a data region of a measurement track in the state in which a head is positioned to an arbitrary measurement track and then switching... Agent: Greer, Burns & Crain

20080170320 - Storage apparatus and control method: An actuator supports a head at one end of a rotatably supported shaft unit and supports a coil of a voice coil motor at the other end, and moves the head to an arbitrary track position of a recording medium. A sensor, attached to a coil support unit of the... Agent: Greer, Burns & Crain

20080170322 - Data recording device: Embodiments of the present invention provide a data recording device capable of achieving desired performance while increasing the convergence rate. According to one embodiment, in a data recording device, an update-width determination unit included in a setting updating unit determines an update-width of a set frequency ƒ in a digital... Agent: Townsend And Townsend And Crew LLP

20080170323 - Utilization of the acceleration zone in ammonite servo writing: A method for writing servo information onto a disk of a hard disk drive with a servo writer. The method includes accelerating a head to a constant velocity across a disk. The disk being defined as having an acceleration zone and a constant velocity zone. The head is then used... Agent: Irell & Manella LLP

20080170324 - Magnetic recording medium, recording/reproducing apparatus, and stamper for manufacturing a magnetic recording medium: On a rotary-type magnetic recording medium, servo patterns are formed in servo pattern regions on one surface and the other surface of a disk-shaped substrate by patterns including recording regions and non-recording regions. In the servo pattern regions on both the one surface and the other surface, plural functional regions... Agent: Greenblum & Bernstein, P.L.C

20080170325 - Disk centering assembly and spindle hub: The present invention provides a centering assembly for centering a plurality of disks being assembled onto a spindle hub, and further provides a spindle hub being capable of centering disks being assembled.... Agent: Lawrence Y.d. Ho & Associates Pte Ltd

20080170326 - Head gimbal assembly with improved interconnection between head slider and suspension, fabricating method thereof, and magnetic disk drive with the same: A head gimbal assembly (HGA) has an improved interconnection between a head slider and a suspension of the HGA. The interconnection is achieved by using a reverse surface of an air bearing surface of the head slider as bonding surface to provide more space for arranging more slider electrical bonding... Agent: Nixon & Vanderhye, PC

20080170327 - Method for forming carbon protective film and method for producing magnetic recording medium, magnetic recording medium and magnetic recording/reproducing apparatus: The present invention provides a method for forming a carbon protective film and a method for producing a magnetic recording medium, that decreases the generation of particles in a plasma CVD apparatus thereby improving flatness of the surface of a carbon protective film, and also can manufacture a magnetic recording... Agent: Sughrue Mion, PLLC

20080170328 - Magnetic head: The present invention provides a magnetic head that can sustain favorable head contact even when magnetic tapes having different thicknesses are used. A magnetic head has a sliding surface coming in contact with a moving magnetic tape. An electromagnetic transducing element is disposed in the sliding surface. First edges are... Agent: Birch Stewart Kolasch & Birch

20080170329 - Granular perpendicular magnetic recording media with improved corrosion resistance by sul post-deposition heating: A method of manufacturing a granular perpendicular magnetic recording medium with improved corrosion resistance comprises sequential steps of providing a non-magnetic substrate including a surface; forming a soft magnetic underlayer (SUL) over the surface; post-deposition heating the SUL; forming an intermediate layer stack over the heated SUL; and forming at... Agent: Seagate Technology LLC C/o Mcdermott Will & Emery LLP

20080170330 - Recording medium cartridge: A recording tape cartridge is structured so as to accommodate, within a case, a reel on which is wound a magnetic tape which is a recording medium. The recording tape cartridge has a so-called WORM function such that overwriting of data on a recording region of the magnetic tape where... Agent: Taiyo Corporation

20080170331 - Magnetic recording medium, magnetic recording and reproducing apparatus, method for manufacturing magnetic recording medium, and method for checking magnetic recording medium: A magnetic recording medium is provided, which has recording layers having concavo-convex patterns formed on both sides of a substrate and can easily distinguish one face from the other face. A magnetic recording and reproducing apparatus having the magnetic recording medium is also provided. The magnetic recording medium includes a... Agent: Oliff & Berridge, PLC

20080170332 - Head slider: Embodiments of the present invention provide a slider that may suppress contamination from being attached to the flying surface of the slider without influence on reduction of the flying height of the slider, and a method for producing the same. According to one embodiment, ions exerting an effect of decreasing... Agent: Townsend And Townsend And Crew LLP

20080170333 - Suspension board with circuit: A stepped-part 4b with a lower tip side is formed on the top face of a pattern end 4, and a lower face 4c thereof is used as a plane on which a solder ball 7 is provided. One or more protrusions 4d made of a swollen conductive layer are... Agent: Wenderoth, Lind & Ponack, L.L.P.

20080170334 - Magnetic head: According to an aspect of an embodiment, a magnetic head comprises a magnetic pole; a first return yoke located under a lower side of the magnetic pole; a second return yoke located over an upper side of the magnetic pole; and a side yokes made of a soft magnetic material,... Agent: Greer, Burns & Crain

20080170335 - In situ radio frequency shield for a magnetic linear recordingmedia head: A read/write head for magnetic tapes configured with an in situ radio frequency (RF) shield is provided. The RF shield of the invention inhibits device elements reading data from reading RF radiation irradiated by other device elements writing data. The RF shield may be situated between the device elements of... Agent: International Business Machines Corporation

20080170336 - Magneto-resistive effect device and magnetic disk system: The invention provides a giant magneto-resistive effect device (CPP-GMR device) having the CPP (current perpendicular to plane) structure comprising a spacer layer, and a first ferromagnetic layer and a second ferromagnetic layer stacked one upon another with the spacer layer interposed between them, with a sense current applied in a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080170338 - method and calculator for modeling non-equilibrium spin polarized charge transport in nano-structures: A method and calculator for obtaining spin polarized quantum transport in 3-dimensional atom-scale spintronic (spin electronics) devices under finite bias voltage, based on implementing Density Function Theory (DFT) in combination with the Keldysh non-equilibrium Greens function (NEGF) formalism to calculate spin polarized quantum transport in 3-dimensional nanostructures under finite bias... Agent: Goudreau Gage Dubuc

20080170337 - Tunnel magnetoresistive effect element and thin-film magnetic head with tunnel magnetoresistive effect read head element: A TMR element includes a lower electrode layer, a TMR multi-layer stacked on the lower electrode layer, and an upper electrode layer stacked on the TMR multi-layer. The TMR multi-layer includes a tunnel barrier layer having a three-layered structure of a first crystalline layer, a crystalline semiconductor layer and a... Agent: Frommer Lawrence & Haug

20080170339 - Magnetic head slider using giant magnetostrictive material: A magnetic head slider includes at least one thin-film magnetic head formed on a trailing surface of the magnetic head slider, and an ABS to be faced a magnetic disk in operation. At least a part of the ABS is made of a giant magnetostrictive material.... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080165443 - Method and device for compensating for thermal decay in a magnetic storage device: The present disclosure is directed to systems and methods of compensating for thermal decay of a magnetic data storage medium. In a particular embodiment, the method includes reading a calibration track on a magnetic data storage medium to obtain a first measurement of a track characteristic. The method also includes... Agent: Westman, Champlin & Kelly

20080165444 - Baseline popping noise detection circuit: A technique to detect head instability by monitoring for a baseline popping (BLP) noise effect on demodulation bursts read from a disk. In one technique, a digital filter is employed as a moving average filter so that the filtering of the bursts has a zero output from the filter if... Agent: Garlick Harrison & Markison

20080165445 - Pickup for accessing moving storage media and drive having the pickup: A pickup (P) for accessing moving storage media (D) carrying substantially parallel information tracks (T) has a carrier (C), a movable actuator (A) with a lens and suspension means joining the carrier (C) and the actuator (A). The actuator (A) carries coils. The pickup (P) has a magnet configuration, which... Agent: Joseph J. Laks Thomson Licensing LLC

20080165446 - Magnetic spacing map method and apparatus for a disk drive: An exemplary embodiment providing one or more improvements includes a head apparatus clearance control apparatus and method in which a map of disk drive disk is created and used for adjusting the head clearance of a disk drive.... Agent: Pritzkau Patent Group, LLC

20080165447 - Device to regenerate a desiccant in a hard disk drive: A disk drive that regenerates a desiccant within the drive. The drive includes a housing that encloses a head and a disk. A first desiccant is located adjacent to a hole of the housing. A second desiccant is coupled to the first desiccant. The second desiccant is also coupled to... Agent: Irell & Manella LLP

20080165449 - Disk drive device: In a disk drive device in which low-density gas is sealed, embodiments of the present invention help to improve joint reliability at a solder joint section between a feedthrough and an enclosure with respect to stress applied by deformation due to changes in temperature environment in use. According to one... Agent: Townsend And Townsend And Crew LLP

20080165448 - Magnetic disk drive and method for production thereof: Embodiments of the present invention help to provide a magnetic disk drive in which the base and the lid are securely welded together, so that the low-density gas sealed therein is protected from leakage. According to one embodiment, the peripheral surface of the rib of the base is machined to... Agent: Townsend And Townsend And Crew LLP

20080165450 - High efficiency voice coil motor: Methods and apparatus for increasing the efficiency of a voice coil motor (VCM) are disclosed. According to one aspect of the present invention, a cylindrical and radially symmetric VCM includes a plurality of sets of magnets, and a single coil. The plurality of sets of the magnets are each arranged... Agent: Aka Chan LLP

20080165451 - High efficiency voice coil motor: Methods and apparatus for increasing the efficiency of a voice coil motor (VCM) are disclosed. According to one aspect of the present invention, a cylindrical and radially symmetric VCM includes a plurality of sets of magnets, and a single coil. The plurality of sets of the magnets are each arranged... Agent: Aka Chan LLP

20080165452 - Virtual front shield writer: A magnetic writer includes a first write element and a second write element. The first write element produces a first field when a first current is passed through a first coil. The second write element, which is disposed relative to the first write element, produces a second field when a... Agent: Kinney & Lange, P.A.

20080165454 - Magnetic random access memory and write method of the same: A magnetic random access memory includes a magnetoresistive effect element which includes a fixed layer in which a magnetization direction is fixed, a recording layer in which a magnetization direction is reversible, and a nonmagnetic layer formed between the fixed layer and the recording layer, and in which the magnetization... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080165453 - Spin-polarization devices using rare earth-transition metal alloys: A tunnel barrier in proximity with a layer of a rare earth element-transition metal (RE-TM) alloy forms a device that passes negatively spin-polarized current. The rare earth element includes at least one element selected from the group consisting of Gd, Tb, Dy, Ho, Er, Tm, and Yb. The RE and... Agent: Daniel E. Johnson IBM Corporation, Almaden Research Center

20080158704 - Enabling intermittent contact recording on-demand: One embodiment in accordance with the invention is a method that comprises determining if a slider of a data storage device is to perform a read or write operation with a disk of the data storage device. If the slider is to perform the read or write operation, the slider... Agent: Hitachi C/o Wagner Blecher LLP

20080158705 - Write head tester: A write head tester is disclosed. The write head tester includes a rotatably coupled magnetic media having a stand-off thereover. In addition, a write head holder is fixedly coupled with the tester. The write head holder receives and electrically couples a removably coupleable write head such that the removably coupleable... Agent: Hitachi C/o Wagner Blecher LLP

20080158706 - Signal processing method, signal processing circuit and information recording/regenerating apparatus: w

20080158707 - Information storage devices using magnetic domain wall movement and methods of operating the same: An information storage device includes a record head and a data recording medium. The record head includes a magnetic substance having magnetic domain walls and records data in the data recording medium. In a method of operating the information storage device, a first high frequency current or a high frequency... Agent: Harness, Dickey & Pierce, P.L.C

20080158708 - Preparing for servo write: Embodiments of the present invention pertain to preparing for servo write. According to one embodiment, a servo write preparation heater is positioned over at least a portion of a surface of a disk. The servo write preparation heater is used to heat the at least portion of the surface of... Agent: Hitachi C/o Wagner Blecher LLP

20080158709 - Thermally assisted magnetic head, head gimbal assembly, and hard disk drive: A thermally assisted magnetic head comprises: a slider substrate, a first surface located opposite to a medium-facing surface, and side surfaces located between the medium-facing surface and the first surface; a magnetic head portion having a near-field light generator on the medium-facing surface side, and a magnetic recording element, the... Agent: Oliff & Berridge, Plc

20080158710 - Information storage devices using magnetic domain wall movement and methods of manufacturing the same: In an information storage device, a writing magnetic layer is formed on a substrate and has a magnetic domain wall. A connecting magnetic layer is formed on the writing magnetic layer, and an information storing magnetic layer is formed on an upper portion of side surfaces of the connecting magnetic... Agent: Harness, Dickey & Pierce, P.L.C

20080158711 - Delta-sigma pll using fractional divider from a multiphase ring oscillator: A disk drive controller includes a servo system operable to associate a time stamp with an arrival of a servo wedge, a firmware loop and core PLLs in the read channel. The firmware loop is operable to determine a period between the arrival of a pair of consecutive servo wedges... Agent: Garlick Harrison & Markison

20080158712 - Buffer member, impact absorbing device of hard disk drive, and mobile information apparatus using it: A buffer member and impact absorbing device can buffer various impacts, namely from an extremely strong impact such as drop to a weak impact or repetitive vibration such as daily operation. The buffer member is formed of a soft flexible part that deforms compressively, has cushion performance, and has a... Agent: Ratnerprestia

20080158715 - Closed-loop control of slider fly-height: A mechanism for maintaining a constant fly-height of a slider comprises a capacitive fly-height change sensor and an electrostatic fly-height controller. The capacitive fly-height change sensor is configured for coupling with the slider, which is in a head gimbal assembly. The capacitive fly-height change sensor is also configured for measuring... Agent: Hitachi C/o Wagner Blecher LLP

20080158716 - Head slider: A head slider is configured to fly a head above a recording medium with an air flow. The head slider includes a recessed portion in a surface facing the recording medium. The recessed portion is formed in a shape that does not form a region in which a shear stress... Agent: Kratz, Quintos & Hanson, LLP

20080158714 - Head stack assembly movement guide: One embodiment in accordance with the invention is an apparatus comprising a movement guide that can be utilized with a data storage device. The movement guide can be for preventing a magnetic head of the data storage device from contacting a disk of the data storage device during operation.... Agent: Hitachi C/o Wagner Blecher LLP

20080158713 - Termination of piezoelectric vertically actuated slider: A fly height control apparatus for supporting a magnetic recording transducer comprises a trifurcated slider. A piezoelectric transducer is coupled to a surface of the central trifurcation of the trifurcated slider. The surface is opposite and parallel to an air bearing surface of the trifurcated slider. An electrical coupling means... Agent: Hitachi C/o Wagner Blecher LLP

20080158717 - Servo pattern writing apparatus, servo pattern writing method, servo pattern reading apparatus, and servo pattern reading method: A servo pattern writing apparatus that uses a write head to write a servo pattern on a recording medium according to an amplitude method, comprises: a position sensor 8 that detects the displacement amount of the write head with respect to its reference position in the track crossing direction; and... Agent: Greer, Burns & Crain

20080158718 - Magnetic recording medium, recording and reproducing device, magnetic recording medium-magnetizing method, and magnetic recording medium-magnetizing device: A magnetic recording medium enhances the quality of a reproducing signal. The magnetic recording medium has a servo pattern formed in a servo pattern area on at least one surface of a disk-shaped substrate by a concave/convex pattern having convex portions (recording areas) and concave portions (non-recording areas), and a... Agent: Greenblum & Bernstein, P.L.C

20080158719 - 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 positioning transitions. A linear tape drive module is configured to read and/or write to the data track... Agent: Brooks Kushman P.c. / Sun / Stk

20080158720 - Multiple section read/write head: Data tracks are written across a width of a tape by positioning a first head section across the tape and writing a first subset of data tracks onto the tape with a first plurality of write elements on the first head section. A second head section is positioned across the... Agent: Brooks Kushman P.c. / Sun / Stk

20080158721 - Peak detection for magnetic tape timing based servo: Selection of servo signals for peak detection of timing based servo tracks of magnetic tape for lateral positioning of heads relative to the magnetic tape. Servo signals from magneto-resistive servo read head(s) reading a magnetic tape are digitized by analog to digital converter(s); digital peak measurement apparatus is configured to... Agent: John H. Holcombe Ibm Corporation, Ip Law Dept.

20080158722 - Disk drive with hybrid analog-digital acceleration feedforward control system and method for rejecting rotational vibration: A disk drive uses a hybrid analog-digital acceleration feedforward control system and method for cancellation of rotational disturbances. A rotational vibration (RV) sensor is used with an analog circuit to generate an analog feedforward signal that is summed with the analog actuator control signal from the servo control processor. The... Agent: Thomas R. Berthold

20080158723 - Magnetic disk drive apparatus with magnetic head sliders: A magnetic disk drive apparatus includes a magnetic disk, a ramp mechanism, a pair of magnetic head sliders each having an MR read head element, and a load/unload mechanism for retracting the pair of magnetic head sliders to the ramp mechanism under unloading states and for putting the pair of... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080158724 - Slider air bearing for mobile drives: A head slider for a magnetic disk drive is provided. The head slider includes a leading edge, a trailing edge, an inner diameter side and an outer diameter side of an air bearing surface. The head slider further includes a first recess on the air bearing surface of the head... Agent: Hitachi C/o Wagner Blecher LLP

20080158725 - Vibration damping utilizing a patterned visco-elastic polymer: A micro-machined vibration-damping device comprises a patterned visco-elastic polymer and a substrate for receiving the patterned visco-elastic polymer.... Agent: Hitachi C/o Wagner Blecher LLP

20080158726 - Disk drive unit and ramp tool for assembling the same: A disk drive unit includes a first cover having a first part of magnet component and a head stack assembly mounted on the first cover; and a second cover assembled with the first cover, which has a second part of magnet component, a spindle motor, at least one disk and... Agent: Nixon & Vanderhye, Pc

20080158727 - Apparatus and method for reducing particle accumulation in a hard disk drive: A disk drive spoiler for reducing particle accumulation in a hard disk drive is provided. The spoiler includes a body portion for directing airflow generated by a rotating disk, the rotating disk comprising a middle diameter and an outer diameter wherein the body portion directs airflow away from the outer... Agent: Hitachi C/o Wagner Blecher LLP

20080158728 - Writer with helium bearing: Storing data to a storage medium with a device that has moving parts supported by a bearing and which maintains separation between opposing bearing surfaces in the bearing with a pressurized working fluid.... Agent: Mccarthy Law Group

20080158729 - Spindle motor: A shaft, a circular plate portion and a cylindrical portion are integrally formed with one another through cutting operations to provide a rotor hub of a motor. An inner region on the lower surface of the circular plate portion is formed continuously with the outer peripheral surface of the shaft,... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080158730 - Head stack assembly and information recording apparatus: An information recording apparatus includes a medium for recording information; a head slider including a device for writing the information onto the medium and a reflective surface for reflecting light; a light emitting portion for generating emission light toward the reflective surface; a light receiving portion for detecting light reflected... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080158731 - Magnetic head having a notched pole piece structure and method of making the same: A magnetic head having an improved fringing field and overwrite capability, and a method of making the same, are described. The method includes the acts of frame plating a pedestal over a first pole piece; depositing an insulator over the first pole piece and plated pedestal; chemically mechanically polishing (CMP)... Agent: Zilka-kotab, Pc- Ibm

20080158732 - Grounded writer core: A transducing head includes a substrate, a writer positioned upon the substrate, and a reader positioned adjacent the writer. The writer is in electrical contact with the substrate.... Agent: Kinney & Lange, P.a.

20080158733 - Tape head having a support plate with contoured surface: A tape recording head is provided comprising a support plate having a contoured surface with an opening in the contoured surface which allows head chips to protrude far enough to allow proper head tape contact for recording. The support plate is fixed on a coarse actuator so that the support... Agent: Zilka-kotab, Pc- Ibm

20080158734 - Micro-actuator for use in small platform disk drive devices, and method of making the same: A micro-actuator for use with an HGA and/or disk drive device (e.g., a small platform disk drive device) with the micro-actuator having a reduced mass suitable for improving shock performance, and/or methods of making the same are provided. In certain example embodiments, the micro-actuator may comprise a substantially U-shaped frame... Agent: Nixon & Vanderhye, Pc

20080158735 - Thin-film magnetic head: The thin-film magnetic head comprises a lower magnetic pole layer, an upper magnetic pole layer and a first thin-film coil. A resist film made of an organic insulating material is interposed between turns adjacent to each other in the lead constituting the first thin-film coil. The first thin-film coil has... Agent: Oliff & Berridge, Plc

20080158736 - Read head having shaped read sensor-biasing layer junctions using partial milling: A read head and a magnetic hard disk drive having a read head layer stack which has been partially milled to within a partial milling range to form a shaped junction and a hard bias layer which is in contact with the shaped junction of the wafer stack.... Agent: The Patent Law Office Of Larry Guernsey

20080158737 - Magnetoresistance effect element, magnetic head and magnetic recording and/or reproducing system: There is provided a practical magnetoresistance effect element which has an appropriate value of resistance, which can be sensitized and which has a small number of magnetic layers to be controlled, and a magnetic head and magnetic recording and/or reproducing system using the same. In a magnetoresistance effect element wherein... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080158741 - Current-perpendicular-to-plane sensor epitaxially grown on a bottom shield: A current-perpendicular-to-plane (CPP) magnetoresistance sensor and a method for forming a current-perpendicular-to-plane (CPP) magnetoresistance sensor. The method includes providing a ferromagnetic shield layer and disposing one or more seed layers on the ferromagnetic shield layer. The method also includes disposing a pinning layer on the one or more seed layers,... Agent: Patterson & Sheridan, L.l.p.

20080158740 - Magnetic memory device: A magnetic memory device includes a magnetoresistive element and a first wiring layer. The magnetoresistive element includes a fixed layer, a recording layer, and a non-magnetic layer interposed therebetween. The first wiring layer extends in a first direction and generates a magnetic field for recording data in the magnetoresistive element.... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080158739 - Tunnel-effect type magnetic sensor having free layer including non-magnetic metal layer: A free magnetic layer of a tunnel-effect type magnetic sensor is formed on an insulating barrier layer made of Mg—O, and the free magnetic layer includes an enhancement layer, a first soft magnetic layer, a non-magnetic metal layer, and a second soft magnetic layer, which are laminated in that order... Agent: Brinks Hofer Gilson & Lione

20080158738 - Tunneling magnetic sensing element including non-magnetic metal layer between magnetic layers: A first pinned magnetic sublayer 4a has a multilayered structure including a first insertion subsublayer disposed between a lower ferromagnetic subsublayer and an upper ferromagnetic subsublayer. The first insertion subsublayer has an average thickness exceeding 3 Å and 6 Å or less. This results in an interlayer coupling magnetic field... Agent: Brinks Hofer Gilson & Lione

20080158742 - Magnetic head that includes negative expansion material: Embodiments of the present invention pertain to a magnetic head that includes negative expansion material. According to one embodiment, the magnetic head includes a read element, a substrate, and at least a partial layer of negative expansion material to control, at least in part, a fly height between an air... Agent: Hitachi C/o Wagner Blecher LLP