Dynamic magnetic information storage or retrieval inventions 09/08

20080231983 - Magnetic head slider testing apparatus and magnetic head slider testing method: In the present invention, a step portion for mounting a row bar is provided at a table stepping down from the face of the table, and by lowering a pair of hooks acrossing over the step portion in its width direction, a row bar held by the hooks is mounted... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080231984 - Apparatus and method to minimize amplitude variations associated with media/head response characteristics in servo writing of perpendicular magnetic recording: A servo writer that writes servo information onto a disk of a hard disk drive. The writing of the servo can be synchronized by a clock track that contains a clock read back signal. The clock read back signal is differentiated by a differentiator circuit. A clamping circuit clamps the... Agent: Irell & Manella LLP

20080231986 - Information recording/reproducing device: An information recording/reproducing device according to an example of the present invention includes a first head and a second head each having a conductive region formed of a conductive material, a recording medium having a data area from which data is read by the first head, and a servo burst... Agent: Charles N.j. Ruggiero, Esq. Ohlandt, Greeley, Ruggiero & Perle, L.lp.

20080231985 - Magnetic head having two main magnetic poles, magnetic disk apparatus and magnetic head switching control circuit: A magnetic head structure is disclosed which can avoid the problem of side erasing regardless of whether the skew angle is assigned to the positive side or negative side while ensuring write magnetic field intensity. The magnetic head includes at least two main magnetic poles having a single taper shape... Agent: Greer, Burns & Crain

20080231987 - Disk cartridge having centering means: A disk cartridge comprises a disk (1) having a central hub (4) for engagement with a disk drive. The disk is accommodated in a housing (2). The housing and disk are dimensioned such that there is limited clearance in a direction parallel to and perpendicular to the plane of the... Agent: Philips Intellectual Property & Standards

20080231988 - Retaining gate for deep storage slot retention of storage cartridges: A storage cartridge retention device employs a deep storage slot for storing one or more storage cartridge(s) through its front opening and biases the stored storage cartridge(s) in a direction of its front opening. The storage cartridge retention device further employs a retaining gate external to the deep storage slot... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20080231989 - Rotor magnet, spindle motor comprising the same, recording and reproducing apparatus, and jig for manufacturing the same: An object of the present invention is to provide a rotor magnet that is capable of adjusting attraction of magnet that is mounted in a spindle motor, a spindle motor including the same, a recording and reproducing apparatus, and a jig for manufacturing the same, with a simple configuration. A... Agent: Wenderoth, Lind & Ponack L.L.P.

20080231990 - Clamps for securing a medium in a memory storage device: A storage medium device in which one or more storage media used for storing data can be mounted includes a drive unit for rotating the storage medium, and a hub that permits stacking of multiple storage media, the hub being coupled to the drive unit. A clamp is secured by... Agent: Greer, Burns & Crain

20080231991 - Method of manufacturing a magneto-optical device: Method of manufacturing a magneto-optical device, wherein at least one coil (3) is embedded in an oxide layer (2), wherein the oxide layer (2) is provided with at least one aperture (4). Wherein said aperture (4) is etched selectively in said oxide layer (2) with the use of a sloping... Agent: Philips Intellectual Property & Standards

20080231992 - Metal oxynitride adhesion/corrosion barrier layer and a diamond-like carbon overcoat: A method for forming a protective bilayer on a magnetic read/write head or magnetic disk. The bilayer is formed as an adhesion enhancing and corrosion resistant underlayer and a protective diamond-like carbon (DLC) overlayer. The underlayer is formed of transition metal oxynitride, having the general formula MeOxNy, where Me represents... Agent: Stephen B. Ackerman

20080231993 - Head slider having light emission device and optical absorption, method for controlling flying height thereof, and controlling circuit thereof: The present invention relates to a head slider used for a magnetic storage device. The head slider includes a light emission device, and an optical absorption device disposed at a position capable of absorbing energy of light emitted by the light emission device.... Agent: Greer, Burns & Crain

20080231994 - Perpendicular recording magnetic head: Embodiments of the present invention provide a perpendicular recording magnetic head having a narrow track width, high recording magnetic field intensity, and a good recording magnetic field distribution. According to one embodiment, a perpendicular recording magnetic head includes a read section and a write section. The write section includes a... Agent: Townsend And Townsend And Crew LLP

20080231995 - Assembled magnetic energy generator as well as its magnetic light: A wrapper type combined magnetic energy generator and a magnetic energy lamp of the present invention belong to the field of illumination. Especially, it is a magnetic energy generator used in the magnetic energy lamp that can produce the electromagnetic energy to excite the illuminative devices. The magnets of the... Agent: Raymond Y. Chan

20080231996 - Voice coil motors and magnetic circuits therefor: Two magnet pieces of rectangular prism or parallelepiped prism shape are disposed on a yoke in an angle array to construct a magnetic circuit for a voice coil motor. The magnetic circuits facilitate positioning and holding of a moving coil, and the voice coil motor is improved in positioning precision... Agent: Birch Stewart Kolasch & Birch

20080231997 - Voice coil motors and magnetic circuits therefor: A magnet of rectangular prism or parallelepiped prism shape is disposed on a yoke to construct a magnetic circuit for a voice coil motor. The magnetic circuits facilitate positioning and holding of a moving coil, and the voice coil motor is improved in positioning precision of a magnetic head.... Agent: Birch Stewart Kolasch & Birch

20080231998 - Magnetoresistive effect device and magnetic random access memory using the same: A magnetoresistive effect element includes a magnetization fixed layer having substantially fixed magnetization direction. A magnetization variable layer has a variable magnetization direction, consists of a magnetic alloy that has a BCC structure and is expressed by Fe1-x-yCoxNiy (0≦x+y≦1, 0≦x≦1, 0≦y≦1), and contains at least one additive element of V,... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080231999 - Tunneling magnetoresistive device and magnetic head comprising the same: A tunneling magnetoresistive device and a magnetic head including the tunneling magnetoresistive device are provided. The tunneling magnetoresistive device includes a pinned layer and a free layer formed on either side of a tunneling barrier layer, wherein the tunneling barrier layer includes Te—O.... Agent: Sughrue Mion, PLLC

20080232000 - Magnetic write head with upper return pole optimization for reduced trailing shield protrusion: A magnetic write head for perpendicular magnetic recording that is resistant to write pole and trailing shield protrusion. The write pole includes a magnetic return pole that is magnetically connected with the trailing shield, the return pole being resistant to deformation or recession such as from mechanically abrasive slider cleaning... Agent: Zilka-kotab, PC- Hit

20080232001 - Perpendicular write head having a stepped flare structure and method of manufacture thereof: A magnetic write head for data recording having a magnetic write pole with a stepped magnetic shell structure that defines a secondary flare point. The secondary flare point defined by the magnetic shell portion can be more tightly controlled with respect to its distance from the air bearing surface (ABS)... Agent: Zilka-kotab, PC

20080232003 - Magnetoresistance effect device, magnetic lamination structural body, and manufacture method for magnetic lamination structural body: An underlying layer (2) made of NiFeN is disposed over the principal surface of a substrate. A pinning layer (3) made of antiferromagnetic material containing Ir and Mn is disposed on the underlying layer. A reference layer (4c) made of ferromagnetic material whose magnetization direction is fixed through exchange-coupling with... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080232002 - Mram tunnel barrier structure and methods: A magnetic tunnel junction (MTJ) structure is of the type having a tunnel barrier positioned between a fixed ferromagnetic layer and a free ferromagnetic layer, the tunnel barrier includes a first barrier layer contacting either the fixed ferromagnetic layer or the free ferromagnetic layer. The first barrier layer transmits a... Agent: Ingrassia Fisher & Lorenz, P.C. (fs)

20080225426 - Magnetic recording device including a thermal proximity sensor: A system includes a magnetic device for writing to and reading from a magnetic medium and a sensor disposed adjacent to the magnetic device and proximate to the magnetic medium. The sensor generates signals related to thermal variations in the sensor caused by changes in a distance between the magnetic... Agent: Kinney & Lange, P.A.

20080225427 - Dynamic flying height design with off-track contact capability at touch down in hard disk drives: Dynamic fly height (DFH) control is obtained for a read/write head by use of a heating element having two laterally separated heat sources symmetrically spaced around the track center line of the head. The two heating sources create a protrusion profile relative to the undistorted ABS that recesses the read... Agent: Stephen B. Ackerman

20080225430 - Method for specifying control value for controlling clearance adjustment amount between head and disk, disk drive device and manufacturing method thereof: Embodiments of the present invention help to reduce damage of a head element portion or a magnetic disk in a procedure for specifying a heater power value for adjusting a clearance between the head element portion and the magnetic disk. In an embodiment of the present invention, an HDC/MPU sequentially... Agent: Townsend And Townsend And Crew LLP

20080225429 - Method of reducing abrasion of disk by using dithering process and disk drive using the same: Embodiments of the invention reduce abrasion of a disk via a dithering process that spreads a friction area between a magnetic head and the disk when a magnetic head lifts from the surface of the disk. In embodiments of the invention, the dithering process is executed only when the magnetic... Agent: Volentine & Whitt PLLC

20080225428 - Storage device, control device, and vibration-detection method: A storage device positions a head at a predetermined position on a storage medium by driving an actuator with the head and at least writes data onto the storage medium. The storage device includes a vibration sensor, a filter for outputting a signal of a frequency band centered on a... Agent: Greer, Burns & Crain

20080225431 - Multi-arm disk drive system having interleaved read/write operations and method of controlling same: A hard disk drive system that includes one or more rotating data storage platters, a drive controller and multiple actuator assemblies and corresponding respective read/write heads. The actuator assemblies are separately moveable for performing separate data seeks. The controller is configured to interleave the seek and read/write operations of the... Agent: Downs Rachlin Martin PLLC

20080225432 - Magnetic tape apparatus: In a magnetic tape apparatus of the present invention, a magnetic head unit having magnetic elements capable of recording or reproducing information with respect to a magnetic tape includes a movable member that includes a magnetic element and has such a size that the movable member comes into contact with... Agent: Birch Stewart Kolasch & Birch

20080225433 - Method and apparatus for assembling a carriage assembly: Suspensions are placed on carriage arms by aligning engagement holes 10a provided in the carriage arms and spacer holes provided in spacer portions of the suspension. A bar-shaped operation member whose outer diameter is equal to or smaller than the inner diameter of the spacer holes is inserted into the... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080225434 - Clamping device of spindle motor: Provided is a clamping device of a spindle motor including a body, a stopper, a weight, and an elastic member. The stopper is coupled to the body. The weight is coupled to the stopper. The elastic member elastically supports the stopper.... Agent: Saliwanchik Lloyd & Saliwanchik A Professional Association

20080225435 - Magnetic writer for field assisted magnetic recording: A writer includes a write element having a tip portion for generating a write field and a conductive assembly that delivers a write assist current through the tip portion to generate a write assist field.... Agent: Kinney & Lange, P.A.

20080225436 - Perpendicular magnetic recording head and manufacturing method thereof: A perpendicular magnetic recording head includes a main magnetic pole layer exposed to an opposing surface opposite a recording medium, applying a perpendicular recording magnetic field to the recording medium; a return yoke layer disposed in the opposing surface opposite the recording medium above or below the main magnetic pole... Agent: Brinks Hofer Gilson & Lione

20080225437 - Head gimbal assembly with low head disk interaction response: Methods and an apparatus for producing a head gimbal assembly with minimum dynamic response and air bearing resonance during flight (e.g., head-disk contact), thereby minimizing disruptions in the desired uniformity of flying height, are described. Embodiment head gimbal assemblies may comprise at least one air bearing surface of a slider... Agent: Kenyon & Kenyon LLP

20080225438 - Laminate for suspension and method for producing same: A laminate (20) for a suspension comprises a stainless steel foil (11), and an insulating layer (12) and a conductor layer (13) that are stacked in this order on the stainless steel foil (11). The stainless steel foil (11) contains a martensite phase in a volume fraction of 0.4 to... Agent: Oliff & Berridge, PLC

20080225439 - Magnetic head actuator assembly: According to an aspect of an embodiment, a magnetic head actuator assembly comprises a magnetic head assembly, a suspension for supporting the magnetic head assembly at one end thereof, a circuit board fixed to the suspension at one end thereof for providing a circuit connection to the magnetic head assembly,... Agent: Greer, Burns & Crain

20080225440 - Input operation device: An input operation device, wherein a manual operation element (401) is shielded by an element shielding member (411) normally openably supported by a member pivoting mechanism (412) and energized to a shielding position by a shielding energizing mechanism (416). In this state, when the element shielding member (411) is displaced... Agent: Knobbe Martens Olson & Bear LLP

20080225441 - Magnetic head: According to an embodiment of the present invention, a magnetic head for recording information on a recording medium comprises a magnetic pole layer having an end face to be facing the recording medium; an auxiliary magnetic pole layer magnetically connected to the magnetic pole; and a shield layer for shielding... Agent: Greer, Burns & Crain

20080225442 - Magnetic head: A magnetic head includes a magnetic sensor layer and upper and lower read shields sandwiching the magnetic sensor layer. At least one of the upper and lower read shields includes at least one end portion having a plurality of portions isolated in a core width direction of the magnetic sensor... Agent: Greer, Burns & Crain

20080225443 - Tunneling magnetic sensing element and method for producing same: A free magnetic layer has a laminated structure in which a first magnetic sublayer composed of Co—Fe or Fe and a second magnetic sublayer composed of Co—Fe—B or Fe—B are formed, in that order, on an insulating barrier layer composed of Mg—O. This effectively improves the rate of change in... Agent: Brinks Hofer Gilson & Lione

20080218889 - Information transfer master for magnetic transfer and magnetic transfer method: An information transfer master has servo information pattern to be magnetically transferred to a magnetic recording medium having a lubrication layer thereon; and a contact surface to contact the magnetic recording medium has surface free energy that is 45 mN/m or less when the servo information pattern is magnetically transferred.... Agent: Greer, Burns & Crain

20080218890 - Baseline correction apparatus: A read channel includes a variable gain amplifier, a low-pass filter, an AGC, an analog-to-digital converter, a frequency synthesizer, a filter, a soft-output detector, an LDPC decoding unit, a synchronizing signal detector, a run-length limited decoding unit, a descrambler, and a first baseline wander corrector. The first baseline wander corrector... Agent: Cantor Colburn, LLP

20080218891 - Magnetic recording device with an integrated microelectronic device: A system includes a magnetic recording device and a circuit including at least one active semiconductor component. The circuit is formed on the magnetic recording device and generates an output associated with operation of the magnetic recording device.... Agent: Kinney & Lange, P.a.

20080218892 - System and method to display information on a hard disk drive assembly: A method and a system are provided for displaying information on a hard disk drive assembly. The hard disk drive assembly includes a hard disk drive which further comprises a driver circuit coupled to a display and a display memory. The driver circuit activates the display mounted on the hard... Agent: International Business Machines Corporation

20080218893 - Magnetic tape device and data recording method: A magnetic tape device comprises a plurality of magnetic heads for recording or reproducing data to a magnetic tape including a data recording area, a tape running mechanism for making the magnetic tape run on the magnetic heads, and a controller for controlling a recording and reproducing operation of the... Agent: Nec Corporation Of America

20080218894 - Spindle motor, and recording and reproducing apparatus equipped with the same: The spindle motor comprises a shaft, a rotor, and a medium-carrying surface. The rotor is disposed on the outer peripheral side of the shaft, and rotates about the shaft. The medium-carrying surface is disposed on the rotor, and carries a circular-disk-form recording medium. The recording medium is pressed and fastened... Agent: Wenderoth, Lind & Ponack L.l.p.

20080218895 - Systems and/or methods for controlling bias voltages between recording media and read/write heads in disk drive devices: Certain example embodiments relate to techniques for more precisely adjusting the spacing between a head and a disk in a disk drive device. A spindle motor of a disk drive device may be electrically isolated from at least the base plate by means of, for example, a nonconductive adhesive. Circuitry... Agent: Nixon & Vanderhye, Pc

20080218896 - Head position control device and medium storage device: A head position control device uses a current observer control which performs two degree of freedom control, with which a current step difference due to the difference of eccentricities between heads is prevented without affecting the seek waveform after switching heads. The head position control device has a locus generation... Agent: Greer, Burns & Crain

20080218897 - Data storage apparatus, assembling method thereof and apparatus for generating tracking position error signal: Disclosed are a data storage apparatus, an assembling method thereof and an apparatus for generating a tracking position error signal capable of storing data using recording media formed with patterns for generating tracking position error signals to obviate errors that may be generated amidst storage of the data, wherein the... Agent: Birch Stewart Kolasch & Birch

20080218898 - Head control device, storage device, and contact detection method: A head control device for controlling, through thermal expansion of a heater, a position of a head for reading and writing data from and to a storage medium, includes a heater control unit that increases a current supplied to the heater stepwise; and an external-force sample retrieving unit that retrieves... Agent: Greer, Burns & Crain

20080218899 - Quiet high performance seek procedure for disk drives: a seek procedure for a hard disk drive which provides a significant reduction in acoustic noise as well as high performance fast seek times is described. The seek procedure lowers the peak acceleration for short seeks and imparts a smooth transition from a sine seek to an exponential arrival at... Agent: Stephen B. Ackerman

20080218900 - Multi-channel thin-film magnetic head and magnetic tape drive apparatus with the multi-channel thin-film magnetic head: A multi-channel thin-film magnetic head has magnetic read head elements, magnetic write head elements, servo magnetic head elements, a plurality of pairs of external connection pads for reading connected with magnetic read head elements, a plurality of pairs of external connection pads for writing connected with magnetic write head elements,... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080218901 - System and method to display information on a data storage cartridge: A method and a system are provided for displaying information on a data storage cartridge. The data storage cartridge includes a driver circuit coupled to a display and a cartridge memory. The driver circuit activates the display on the data storage cartridge. In response to the activation of the display... Agent: International Business Machines Corporation

20080218902 - Method for measuring width of plating layer, magnetic recording head, and manufacturing method thereof: A magnetic head has a main magnetic pole made of at least a magnetic material and a coil. The main magnetic pole has a stop layer through an inorganic insulating layer on both sides of the main magnetic pole in the widthwise direction. The boundary between the main magnetic pole... Agent: Greer, Burns & Crain

20080218903 - Flat profile tape head: A magnetic head according to one embodiment includes a first module having a flat profile tape bearing surface, a second module having a flat profile tape bearing surface, and a third module having a flat profile tape bearing surface. The third module is positioned on an opposite side of the... Agent: Zilka-kotab, Pc- Ibm

20080218904 - Electronic component and tape head having a closure: An electronic component, comprising: a portion of a row cut from a wafer; and a closure coupled to the portion of the row of the wafer towards a first edge of the portion of the row of the wafer; the portion of the row of the wafer having a bonding... Agent: Zilka-kotab, Pc- Ibm

20080218905 - Tape tension modulation system and method: A system and method of modulating tape tension during operation of a tape drive data storage system in which a fixed position tape guide utilizes one or more drag elements to exert a control force on a tape medium that affects downstream tape tension. Drag elements that may be used... Agent: Walter W. Duft

20080218906 - Magnetic recording media and method of manufacture of the same: A magnetic recording medium is disclosed in which there is no degradation of magnetic characteristics at the time of manufacture, such as is seen in proposed discrete-track media or patterned media. The medium can be manufactured by a simple method and results in excellent productivity. Magnetic recording media have a... Agent: Rossi, Kimms & Mcdowell LLP.

20080218907 - Magneto-resistance effect element and thin-film magnetic head: A magneto-resistance effect element (MR element) used for a thin film magnetic head is configured by a buffer layer, an anti-ferromagnetic layer, a pinned layer, a spacer layer, a free layer, and a cap layer, which are laminated in this order, and a sense current flows through the element in... Agent: Knobbe Martens Olson & Bear LLP

20080218908 - Perpendicular magnetic recording head and manufacturing method thereof: A perpendicular magnetic recording head includes a main magnetic pole layer; and a return yoke layer laminated on the main magnetic pole layer with a magnetic gap layer formed of a nonmagnetic material disposed on an opposing surface opposite a recording medium. The return yoke layer includes a first throat... Agent: Brinks Hofer Gilson & Lione

20080218911 - Cpp with elongated pinned layer: CPP magnetic read head designs have been improved by increasing the length of the AFM layer relative to that of both the free and spacer layers. The length of the pinned layer is also increased, but by a lesser amount, an abutting conductive layer being inserted to fill the remaining... Agent: Saile Ackerman Llc

20080218910 - Magnetic detection element and manufacturing method thereof: Embodiments of the present invention help to reduce etching damage at end parts of a magnetoresistive sensor in ion beam etching. According to one embodiment, ion beam etching (IBE) is used in a magnetoresistive sensor track width forming step. This IBE irradiates Ar ion beam to a substrate in a... Agent: Townsend And Townsend And Crew LLP

20080218909 - Thin-film magnetic head having heating element with lower-resistance portion: Provided is a thin-film magnetic head having a heating element in which excessive increase in temperature is suppressed corresponding to smaller area of the shield layers of the MR effect element. The thin-film magnetic head comprises: an electromagnetic coil element; an MR effect element having two shield layers sandwiching an... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080218912 - Cpp-type magnetoresistive element having spacer layer that includes semiconductor layer: An MR element includes: a free layer whose direction of magnetization changes in response to a signal magnetic field; a pinned layer whose direction of magnetization is fixed; and a spacer layer disposed between these layers. The spacer layer includes: a semiconductor layer made of an n-type semiconductor; and a... Agent: Oliff & Berridge, Plc

20080218914 - Read sensor with a uniform longitudinal bias stack: A read sensor with a uniform longitudinal bias (LB) stack is proposed. The read sensor is a giant magnetoresistance (GMR) sensor used in a current-in-plane (CIP) or a current-perpendicular-to-plane (CPP) mode, or a tunneling magnetoresistance (TMR) sensor used in the CPP mode. The transverse pinning layer of the read sensor... Agent: Zilka-kotab, Pc- Hit

20080218913 - Tunneling magnetoresistive element which includes mg-o barrier layer and in which nonmagnetic metal sublayer is disposed in one of magnetic layers: In a tunneling magnetoresistive element, an insulating barrier layer is made of Mg—O, and a first pinned magnetic layer has a laminated structure in which a nonmagnetic metal sublayer made of Ta is interposed between a lower ferromagnetic sublayer and an upper ferromagnetic sublayer. The nonmagnetic metal sublayer has an... Agent: Brinks Hofer Gilson & Lione

20080218915 - Tunnel magnetoresistive effect element with lower noise and thin-film magnet head having the element: Provided is a TMR effect element having no special structures needing much man-hour cost for the formation, in which the high temperature noise and the low temperature noise are suppressed and a sufficiently high resistance-change ratio is provided. The TMR effect element comprises: a tunnel barrier layer formed by oxidizing... Agent: Frommer Lawrence & Haug

20080212221 - Method of setting ac erase frequency and ac erase method based on data frequency: A method of setting an AC erase frequency using a data frequency of a disk area and an AC erase method. The method of setting the AC erase frequency includes obtaining a data frequency for each disk area, and setting an AC erase frequency for each disk area based on... Agent: Stanzione & Kim, LLP

20080212222 - Access control management: In one embodiment, a cartridge library, comprises a management component comprising a first processor module and a memory medium communicatively connected to the first processor module, an interface controller comprising a second processor module and a memory medium communicatively connected to the second processor module, wherein the interface controller comprises... Agent: Hewlett Packard Company

20080212223 - Information processing device, information processing method, and computer program: A data recording structure supporting an AVCHD format is provided. The data recording structure allows a playing process, an editing process and a write-once recording process to be quickly performed. When data recording is performed in a data recording format having a layered management structure such as an AVCHD format,... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080212225 - Information processing apparatus, information recording medium, and information processing method, and computer program: An information processing apparatus which executes formatting of an information recording medium includes a data processing section that executes formatting in which a plurality of partitions serving as a plurality of segmented data recording areas are set, and a partition-specific master boot record (MBR) dedicated to each of the partitions... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080212224 - Method and apparatus for controlling motion of storage media: A method of controlling relative motion of a data storage medium on which data is stored in data groups comprising tracks extending across the storage medium and a rotatable transducer for reading data from the storage medium includes determining from the data groups a start reread data group at which... Agent: Hewlett Packard Company

20080212226 - Disk drive device, altitude determination method therefore and method for determining characteristic of head element portion: Embodiments of the present invention allow for a precise altitude to be calculated from read-out signals of a head slider. In one embodiment, a hard disk controller/multiprocessing unit (HDC/MPU) determines a head element portion in which the instability has occurred in accordance with the resolution change. The HDC/MPU adjusts the... Agent: Townsend And Townsend And Crew LLP

20080212227 - Storage medium device, deformation controller and head slider: A storage medium device has at least one head which includes a read head element and a write head element. The device has a deferrable element which changes a distance between the read head element and the write head element in a circumferential direction, a storage unit which stores a... Agent: Greer, Burns & Crain

20080212228 - Magnetic disk device and magnetic recording medium: A magnetic disk device has a magnetic recording medium in which one servo track and an array of at least one data track are formed alternately. A head portion includes a set of reading heads arranged in a radius direction of the magnetic recording medium for reading signals from the... Agent: Greer, Burns & Crain

20080212229 - Method of and apparatus for detecing actuator vibration in hard disc drive, and hard disc drive write control method of avoiding effect due to read/write head vibration: A method of and an apparatus for detecting an actuator vibration, and a hard disc drive write control method of avoiding an effect due to the actuator vibration. The method of detecting an actuator vibration includes: obtaining a specified number of position error signal (PES) samples while following a track;... Agent: Staas & Halsey LLP

20080212231 - 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, the recording layer including recording elements each formed as a convex portion of the recording layer. Surface steps are formed in an outer area including a radially outermost portion of... Agent: Oliff & Berridge, PLC

20080212230 - Waveguide structure, manufacturing method thereof and hamr using the same: A manufacturing method of a waveguide structure includes forming a metal layer of a predetermined size on a substrate to form a structure, forming a lower clad layer on the structure in order to completely cover the metal layer, forming a core layer of a predetermined size on the lower... Agent: Sughrue Mion, PLLC

20080212232 - Tape head: A tape head assembly according to one embodiment includes a single beam having an upper surface and a plurality of apertures into the upper surface, the beam defining a void positioned towards an inner portion thereof, the void being for receiving a cable; multiple modules coupled to the beam, at... Agent: Zilka-kotab, PC- Ibm

20080212233 - Method of manufacturing storage medium apparatus and storage medium apparatus: A method of manufacturing a storage medium apparatus having a storage medium that stores data. The method includes disposing the storage medium onto a first unit having an insertion section to be inserted into a through hole of the storage medium and an abutment face made of a soft-metal material... Agent: Greer, Burns & Crain

20080212234 - Magnetic head slider: Embodiments of the present invention help to provide a flying height adjusting type magnetic head slider with reduced influence of a heater coil induction field. According to one embodiment, a magnetic head slider comprises a heater, a read element, and a write element, which are formed on a substrate. The... Agent: Townsend And Townsend And Crew LLP

20080212235 - Data recording slider having an air bearing surface providing high pressure relief for vibration damping: A slider for magnetic data recording. The slider has an air bearing surface with a trailing edge pad that is configured with a series of recesses that damp slider oscillations during use. The series of recesses formed in the trailing pad of the slider reduce slider oscillations by creating localized... Agent: Zilka-kotab, PC- Hit

20080212236 - Suspension having magnetic head assembly mounted thereon and magnetic recording disk drive using the suspension: A suspension having a magnetic head assembly 1 mounted thereon is provided, wherein the magnetic head assembly comprises: a write head 1-2; a read head 1-1; and a resistive heating element 1-3 for controlling the flying heights of the magnetic heads, wherein the wires HTx and GTx for the resistive... Agent: Townsend And Townsend And Crew, LLP

20080212237 - Disk drive device and manufacturing method thereof: In a disk drive device having a double cover structure with low-density gas enclosed therein, embodiments of the present invention allow a more reliable leak inspection to be performed on the second cover and to prevent defects caused by joining the secondary cover. An HDD according to an embodiment of... Agent: Townsend And Townsend And Crew LLP

20080212240 - Conductive pairing for piggyback magnetic head: A magnetic tape head having an array of reader/writer pairs formed on a common substrate, each reader/writer pair being configured in a piggyback configuration such that the writer and reader of each pair are aligned in a direction parallel to a relative direction of media travel thereover. Each reader comprises... Agent: Zilka-kotab, PC- Ibm

20080212239 - Magnetic head and magnetic disk system having the same: A read sensor is disposed near a main pole, thereby reducing the distance between the read sensor and a write sensor. In this case, however, a magnetic field generated from the main pole affects magnetization of a free layer and a pinned layer of a magnetoresistive film, thereby causing the... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080212238 - Magnetoresistive head with larger longitudinal biasing: Embodiments of the present invention help to efficiently apply a longitudinal biasing with appropriate strength from a longitudinal biasing layer to a free layer even in a small read gap length. According to one embodiment, in the track width direction of the magnetoresistive film, the longitudinal biasing layer excluding its... Agent: Townsend And Townsend And Crew LLP

20080212241 - Damping control in magnetic nano-elements using ultrathin damping layer: A write head and a method for forming the write head. The method includes providing a first pole and a second pole for the write head. The first pole and the second pole are formed from a ferromagnetic material. Regions of the write head including at least a portion of... Agent: Patterson & Sheridan, L.L.P.

20080212243 - Ap1 layer for tmr device: A TMR read head with improved voltage breakdown is formed by laying down the AP1 layer as two or more layers. Each AP1 sub-layer is exposed to a low energy plasma for a short time before the next layer is deposited. This results in a smooth surface, onto which to... Agent: Saile Ackerman LLC

20080212242 - Method for preventing tmr mrr drop of a slider and method for manufacturing sliders: The invention provides a method for preventing TMR MRR drop of a slider, including: positioning a row bar constructed by sliders on a tray, each slider incorporating a TMR element; loading the tray into a processing chamber and evacuating the processing chamber to a predetermined pressure; forming a first etching... Agent: Nixon & Vanderhye, PC