Dynamic magnetic information storage or retrieval inventions 08/08

20080204913 - Magnetic head inspection system, magnetic head inspection method and magnetic disk drive manufacturing method: Embodiments of the present invention provide a magnetic head inspection system having a simple configuration capable of inspecting magnetic heads. According to one embodiment, the magnetic head inspection system comprises an inspection module which is provided with a magnetic disk where servo data including track identifier information are recorded, a... Agent: Townsend And Townsend And Crew LLP

20080204914 - Low power write driver for a magnetic disk drive: A write driver (11) for a disk drive system is disclosed. The write driver (11) includes a normal H-bridge drive circuit (30) and a boost H-bridge drive circuit (32). The normal and boost H-bridge drive circuits (30, 32) are both biased from a Vcc power supply; however, system ground (GND)... Agent: Texas Instruments Incorporated

20080204915 - Patterned magnetic recording medium with data island pattern for improved reading and writing and magnetic recording system incorporating the medium: A patterned magnetic recording medium has discrete data islands arranged in spaced-apart tracks, with the tracks being arranged in multi-track groups or “hypertracks”. The islands have an equal island-spacing (IS) distance in the along-the-track direction and within each hypertrack the tracks are spaced-apart an equal track-spacing (TS) distance. If there... Agent: Thomas R. Berthold

20080204916 - Thermally assisted magnetic recording head and magnetic recording apparatus: A second waveguide is formed near a first waveguide for guiding light to the vicinity of a main pole of a thermally assisted magnetic recording head, and a portion of light propagated through the waveguide 1 is branched to the second waveguide. The light transmitting in the second waveguide is... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080204917 - Thermally assisted magnetic recording head, recording system, and recording method: Embodiments of the present invention help to suppress the effects of thermal fluctuation in a thermally assisted magnetic field recording, and improve recording density. According to one embodiment, a recording area of a magnetic disk is heated and the full width at half maximum of an optical power distribution of... Agent: Townsend And Townsend And Crew LLP

20080204918 - Electro-mechanical system for non-duplication of audio files: A system consisting of a memory storage unit in which the licensed audio files are stored. The function of this device is to recognize the requested data and thereby allow the audio file contents from the memory storage unit according to the instructions set to this device. It is an... Agent: Intellectual Property Dept. Dewitt Ross & Stevens Sc

20080204919 - Control device, storage device, and control method for storage device: A storing unit stores initial parameters indicating initial values of control parameters in a first storage medium in association with first update parameters obtained by modifying the initial parameters. A difference detecting unit compares, when second update parameters are stored in a second storage medium, the initial parameters with the... Agent: Greer, Burns & Crain

20080204921 - Record medium bearing communication apparatus control program, and communication apparatus: A computer performs a control including (1) receiving a request for monitoring a station to-be-handled which is a communication apparatus different from a pertinent station including the computer, (2) transmitting a request for a response based on the station to-be-handled, to the station to-be-handled at a predetermined time interval, on... Agent: Staas & Halsey LLP

20080204920 - Storage device: The present invention makes is possible to appropriately set the power saving control of the storage device from the management device of the storage device. In addition, the storage device executes control of the power saving for the magnetic disk device after ensuring consistency between an instruction from the administrator... Agent: Mattingly, Stanger, Malur & Brundidge, P.c.

20080204923 - Burn-in process of producing data correlating elevation of disk drive head to temperature and method of controlling the elevation of the disk drive head using the data: Data characterizing a read/write head of a hard disk drive is produced in a burn-in process. The method includes measuring the flying height of the head at a first temperature in a burn-in chamber, measuring the flying height of the head at a second temperature in the burn-in chamber, postulating... Agent: Volentine & Whitt Pllc

20080204925 - Disk drive device and ramp used therefor: Embodiments of the present invention help to prevent data error occurrence in a hard disk drive by reducing the generation of dust caused by friction between a magnetic disk and a ramp. According to one embodiment, a hard disk drive comprises an enclosure, a motor for rotating a magnetic disk,... Agent: Townsend And Townsend And Crew LLP

20080204924 - Information recording device: Embodiments of the present invention help to compute controlling quantity to make the spacing between a floating head slider and a recording medium optimum without damaging the floating head slider and the recording medium by detecting the floating head slider's contact with the recording medium with high sensitivity. According to... Agent: Townsend And Townsend And Crew LLP

20080204922 - Methods and apparatus to monitor hard-disk drive head position: Methods and apparatus to monitor hard-disk drive head position are described. In one example, a hard-disk drive system includes a hard-disk drive platter, a hard-disk drive read head configured to read information from the hard-disk drive platter, and a hard-disk drive head position detector configured to a receive a signal... Agent: Texas Instruments Incorporated

20080204926 - Techniques for identifying servo sectors in storage devices: Techniques are provided for identifying the servo sectors in a track on a data storage device. A data storage device identifies the servo sectors in a track by reading distributed index bits from multiple servo sectors in a track. The data storage device analyzes only one index bit from each... Agent: Steven J. Cahill/ Hitachi Gst

20080204927 - Magnetic recording/reproducing apparatus: The present invention provides a magnetic recording/reproducing apparatus including two chassis, i.e., a main chassis on which a cylinder is disposed and a sub chassis on which a cassette can be mounted. A T3 post arm is pivotally attached to the sub chassis. A groove portion capable of positioning of... Agent: Hamre, Schumann, Mueller & Larson P.c.

20080204928 - Clamping system for a data storage device: A clamping system includes a stack of storage media discs that includes an annular outer disc surface. A clamp includes a clamp surface that faces the outer disc surface. A ring is disposed between the clamp surface and the outer disc surface. The ring has a crested ring face with... Agent: Westman Champlin & Kelly, P.a.

20080204929 - Fluid dynamic bearing device, spindle motor including the same, read-write device, and method of manufacturing bearing part: An object of the present invention is to provide a method of manufacturing a fluid dynamic bearing device and a bearing part for a thrust bearing, both of which are applied to a flat and thin bearing part and are capable of preventing abrasion and scratching even if two parts... Agent: Wenderoth, Lind & Ponack L.l.p.

20080204930 - Perpendicular recording head with a grooved yoke: Disclosed is a perpendicular recording head for a hard disk drive. The perpendicular recording head includes a yoke that has a plurality of grooves essentially perpendicular to a magnetic flux that flows in a vertical direction relative to the yoke. The perpendicular grooves inhibit residual magnetism in the vertical direction... Agent: Irell & Manella LLP

20080204931 - Hard disk drive apparatus: A hard disk drive apparatus includes a magnetic head having a write head to record data on a disk and a read head to read the data recorded on the disk, at least one actuator arm on which the magnetic head is mounted, a voice coil motor to rotate the... Agent: Stanzione & Kim, LLP

20080204932 - Tape cartridge of compatible type: A tape cartridge capable of recording and reading out large and small tape cartridges with different widths is provided. The tape cartridge comprises a pair of right and left hubs for winding a tape which is winded off from one hub and is wound around the other hub via tape... Agent: Birch Stewart Kolasch & Birch

20080204933 - Granular perpendicular magnetic recording media with multi-interlayer structure: A perpendicular magnetic recording medium comprises a layer stack formed over a surface of a non-magnetic substrate, and comprising, in overlying sequence from the surface: a magnetically soft underlayer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material formed thereon; and at least one crystallographically... Agent: Seagate Technology Llc C/o Mcdermott Will & Emery LLP

20080204934 - Magnetic recording medium, method for manufacturing the same, and magnetic recording/reproducing apparatus: There is provided a method for fabricating a magnetic recording medium that provides high throughput, low manufacturing cost, and no degradation in accuracy in pattern size in fine pattern formation. A resist layer is formed on a substrate or cutting work layer. The surface of the substrate is divided into... Agent: Stanley P. Fisher Reed Smith LLP

20080204935 - Original disk fabrication method, magnetic recording medium manufacturing method and magnetic recording medium: It is made possible to fabricate a bit-patterned magnetic recording medium having a high recording density and making favorable address deciphering possible. An original disk fabrication method for irradiating a photosensitive resin film with an electron beam to draw a pattern, the method includes: irradiating the electron beam by using... Agent: Nixon & Vanderhye, Pc

20080204936 - Slider air bearing with asymetric side rail: 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

20080204937 - Magnetic recording medium, manufacturing method thereof and magnetic recording apparatus using magnetic recording medium: This magnetic recording medium comprising at least a non-magnetic underlayer on a non-magnetic substrate, a first recording magnetic layer on the non-magnetic underlayer, a second recording magnetic layer on the first recording magnetic layer, and a third recording magnetic layer on the second recording magnetic layer. The first recording magnetic... Agent: Greer, Burns & Crain

20080204938 - Thin-film magnetic head having antistatic means for protective coat of element end: Provided is a thin-film magnetic head in which a noise due to the voltage potential difference between the read head element and the protective coat surface is suppressed. The thin-film magnetic head comprises: a read head element, one end surface of the read head element reaching an head end surface... Agent: Frommer Lawrence & Haug

20080204939 - Magnetic disk device: A magnetic disk device performs yaw angle correction of a magnetic head is compact, and performs yaw angle correction without changing the arm length. A suspension is rotatably provided on the tip of an arm which is rotated by a rotating actuator and an interconnection device is provided, one end... Agent: Greer, Burns & Crain

20080204940 - Recording medium drive and latch member for recording medium drive: This recording medium drive has an actuator member which rotationally moves around a first shaft, a latch stop member fixed to the housing, and a latch member which rotationally moves around a second shaft. The actuator member, having a locked member, and the latch member has a locking member which... Agent: Greer, Burns & Crain

20080204941 - Hard disk drive having crash stopper and method of assembling the same: A hard disk drive includes a base, a head stack assembly (HSA) that is mounted to the base so as to be rotatable relative to the base, a voice coil motor (VCM) block that has an upper section and a lower section respectively disposed above and below a voice coil... Agent: Volentine & Whitt Pllc

20080204944 - Magnetic memory: It is possible to reduce writing current without causing fluctuation of the writing characteristic. A magnetic memory includes: a magnetoresistance effect element having a magnetization pinned layer whose magnetization direction is pinned, a storage layer whose magnetization direction is changeable, and a non-magnetic layer provided between the magnetization pinned layer... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080204942 - Magnetic thin film having spacer layer that contains cuzn: A magnetic thin film has a pinned layer whose magnetization direction is fixed with respect to an external magnetic field, a free layer whose magnetization direction is changed according to the external magnetic field, and a spacer layer which is sandwiched between said pinned layer and said free layer. Sense... Agent: Knobbe Martens Olson & Bear LLP

20080204943 - Magnetoresistive element, magnetic memory, magnetic head, and magnetic recording/reproducing device: A magnetoresistive element includes: a first magnetic layer whose magnetization direction is substantially pinned toward one direction; a second magnetic layer whose magnetization direction is changed in response to an external magnetic field; and a spacer layer provided between the first magnetic layer and the second magnetic layer. At least... Agent: Nixon & Vanderhye, Pc

20080204945 - Magnetoresistance sensors pinned by an etch induced magnetic anisotropy: Magnetoresistance sensors with magnetic pinned layers that are pinned by anisotropic etch induced magnetic anisotropies and methods for fabricating the magnetoresistance sensors are provided. The method comprises forming a seed layer structure. The seed layer is etched to form an anisotropic etch along a top surface of the seed layer.... Agent: Duft Bornsen & Fishman, LLP

20080204946 - Magnetoresistance effect element and magnetic memory device: A magnetoresistance effect element having a free magnetic layer is provided. The free magnetic layer is formed in a laminate including a fixed magnetization layer having a fixed magnetization direction, a non-magnetic layer formed on the fixed magnetization layer, a first ferromagnetic layer, a non-magnetic metallic layer formed on the... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080198487 - Single step method for transferring digital motion pictures to movie theater systems: The disclosure is directed to techniques for transferring data files representing a digital motion picture to a motion picture system within a theater in a single step. More specifically, the techniques allow a user to press one button to initiate the transfer, or upload, of a plurality of data files... Agent: Attention: Eric D. Levinson Imation Corp.

20080198488 - Data duplicator: A data duplicator capable of copying data to a plurality of types of disk. Data are read from a source disk which serves as a source of duplication, and the read data are temporarily saved as FAT data in a hard disk drive. The type of a target disk which... Agent: Christensen, O'connor, Johnson, Kindness, PLLC

20080198489 - Cartridge drive diagnostic tools: In one embodiment, a method of diagnosing an error in a cartridge drive, comprises detecting an occurrence of a defined event in a cartridge drive, in response to the defined event, initiating an analysis routine of at least one event log from the cartridge drive, and invoking an intervention routine... Agent: Hewlett Packard Company

20080198492 - Hard disk drive and associated method for optimizing write parameters: A hard disk drive which can maintain a write property at a constant level by reflecting a temperature effect during a write parameter set process even when the hard disk drive is used under a condition different from one intended during manufacturing of the disk. The hard disk drive includes... Agent: Volentine & Whitt PLLC

20080198491 - Method of setting write factor in hard disk drive and hard disk drive using the same: A method of setting write factors of each head in a hard disk and a hard disk drive using the method. The method includes writing a write signal onto a test track based on a write factor initially set on the magnetic head, writing the write signals onto the tracks... Agent: Stanzione & Kim, LLP

20080198490 - Prml channel with zero-mean noise reduction: A hard disk drive with a read channel that averages data before the data is provided to a viterbi detector of the channel. Averaging the data reduces the zero mean noise in the data.... Agent: Irell & Manella LLP

20080198493 - Test method of a magnetic disk and magnectic disk tester: A test burst signal is overwritten from a write end position over a connecting region determined by positional deviation between a read head and a write head and a peripheral speed of a disk. Since, therefore, the overwritten signal portion is overlapped on the test burst signal written at a... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080198494 - Certify testing apparatus and certify testing method: An apparatus is provided that can detect error locations in certify testing of a magnetic recording medium without influence from undulation of the substrate or irregularities in film thickness distribution of magnetic film of the magnetic recording medium. Such an apparatus tests playback signals of a magnetic recording medium, the... Agent: Sughrue Mion, PLLC

20080198495 - Head actuator design for a low profile tape drive: A head actuator design for a low profile tape drive is configured with a damping system for a head suspension system having flexure springs to accommodate a half-high form factor. The damping system employs hall sensors, for example, mounted on the head carriage that moves with the head carriage to... Agent: Law Office Of Mark J. Spolyar

20080198497 - Hard disk drive apparatus, method to control flying height of magnetic head thereof, and recording media for computer program therefor: A method of controlling a flying height of a magnetic head of a hard disk drive apparatus includes producing a reference FOD (flying on demand) voltage profile defining a relationship between the flying height of the magnetic head and an FOD voltage at a measured temperature, wherein an end of... Agent: Stanzione & Kim, LLP

20080198496 - Near-field light generator plate, thermally assisted magnetic head, head gimbal assembly, and hard disk drive: A near-field light generator plate 36 of the present invention is arranged to face a medium 10, and one portion 36b and other portion 36a in a medium-facing surface S thereof are made of their respective electroconductive materials different from each other. Since the one portion and the other portion... Agent: Oliff & Berridge, PLC

20080198498 - Apparatus and method for controlling the rotation velocity of an optical disc: Method and apparatus for controlling the rotation velocity of an optical disc in a wide range of velocities, including low velocities. In a first range of velocities, a first sensor, for example an EMF sensor, is used to control the commutation moments of a turntable motor. For velocities outside the... Agent: Philips Intellectual Property & Standards

20080198499 - Continuous mode velocity control of voice coil motor: A method of controlling the velocity of a voice coil motor (VCM), including sensing a voltage difference between the VCM and a sense resistor and driving a velocity control loop (VCL) based on the voltage difference. There is also a control loop circuit, including a current output connected to drive... Agent: Stmicroelectronics, Inc.

20080198500 - Interleaved servo pattern: In general, the invention is directed to servo techniques that utilize servo patterns to facilitate head positioning relative to the data tracks. For example, the servo techniques may include a first series of servo patterns configured to allow calculation of a position error signal that substantially mitigates error resulting from... Agent: Attention: Eric D. Levinson Imation Corp.

20080198501 - Storage apparatus, storage control circuit, and head-position-displacement measuring method: Magnetic disks have a configuration in which a plurality of tracks formed of a magnetic substance are sectioned by a non-magnetic substance that does not allow magnetic write heads are of a combined type of a read head and a write head. A measurement recording unit causes the head to... Agent: Greer, Burns & Crain

20080198502 - Write-head positioning method and disk drive: A write-head positioning method includes steps of positioning a write head on a first track of a storage medium on the basis of a servo signal and writing a signal on the first track, positioning the write head on second and third tracks located adjacent to opposite sides of the... Agent: Greer, Burns & Crain

20080198503 - Auto-servo tape system and associated recording head: A recording head comprises a first tape-head contact area including a first write element and a first read element, which itself may include an MR sensor element. The first read element is laterally offset as to the first write element, and no portion of the first read element lies in... Agent: Morrison & Foerster LLP

20080198504 - Data transfer apparatus for use with tape cartridges and tape cartridges for use with such data transfer apparatus: A tape cartridge includes a housing and a tape reel that is rotatable about an axis of rotation. The tape reel is adapted to cooperably engage a reel drive member of a data transfer apparatus that, in use, applies a drive torque to the tape reel to rotate the tape... Agent: Hewlett Packard Company

20080198505 - Height adjustment mechanism: A height adjustment mechanism disposed in a body is provided, which includes two axle seats disposed on the body, a spindle, two support parts fixed on the spindle, and a stop component. Each of the support parts has a fitting hole, and the spindle is rotatably disposed in the body,... Agent: Morris Manning Martin LLP

20080198506 - Piezoelectric micro-actuator for magnetic tape read/write head: The claimed embodiments provide methods, apparatuses and systems directed to a servo-actuated positioner for a read/write head that uses a piezoelectric super fine actuator that moves the read/write head to maintain alignment with data tracks on a magnetic tape. The servo-actuated positioner, in one implementation, uses flexures to mechanically support... Agent: Law Office Of Mark J. Spolyar

20080198507 - Magnetic head and method of manufacturing the same: Embodiments of the present invention help to suppress broadening of a write field of a main pole of a perpendicular recording head and realize high-quality write operation. According to one embodiment, a main pole of a write head extends to an air bearing surface or a medium-facing surface and has... Agent: Townsend And Townsend And Crew LLP

20080198508 - Magnetic head for perpendicular magnetic recording and magnetic disk drive: There is provided a perpendicular recording magnetic head that is able to improve further the magnetic characteristic in writing the magnetic data by magnetizing a magnetic recording medium in the perpendicular direction rather than the prior art. In a perpendicular recording magnetic head, a recording magnetic field output surface of... Agent: Greer, Burns & Crain

20080198509 - Three-etch abs design with a closed front channel: An air-bearing surface of a hard disk drive slider comprises a trailing edge wherein a magnetic transducer is coupled to the air-bearing surface. A leading edge is opposite from the trailing edge. A channel is coupled to the air-bearing surface wherein the channel comprises: a closure at a distal end... Agent: Hitachi C/o Wagner Blecher LLP

20080198510 - Head slider and storage medium drive: A head slider arranged opposite to a storage medium, includes: a slider body, an insulating nonmagnetic layer laminated on a trailing edge of the slider body, and a head element embedded in the nonmagnetic film. A front edge of the head element is exposed at a top surface of the... Agent: Greer, Burns & Crain

20080198511 - Suspension for a hard disk drive microactuator: A disk drive flexure is provided. The disk drive flexure includes a first surface for coupling with a microactuator, the microactuator comprising a moving portion and a stationary portion wherein the moving portion and the stationary portion are integrated within a substrate and wherein the stationary portion is coupled to... Agent: Hitachi C/o Wagner Blecher LLP

20080198512 - Perpendicular magnetic recording medium and manufacturing method thereof, magnetic recording apparatus: A perpendicular magnetic recording medium comprises a soft-magnetic backing layer formed on a substrate, an orientation control layer formed on the soft-magnetic backing layer, a first foundation layer of a continuous film of Ru or a Ru alloy formed on the orientation control layer, a second foundation layer including a... Agent: Greer, Burns & Crain

20080198513 - Magnetic thin film having non-magnetic spacer layer that is provided with sno2 layer: A magnetic thin film has: a pinned layer whose magnetization direction is fixed with respect to an external magnetic field; a free layer whose magnetization direction is changed in accordance with the external magnetic field; and a non-magnetic spacer layer that is sandwiched between said pinned layer and said free... Agent: Knobbe Martens Olson & Bear LLP

20080198514 - Magnetoresistive device, magnetic head, magnetic storage apparatus, and magnetic memory: A CPP-type magnetoresistive device includes a magnetization pinned layer, a magnetization free layer, and a non-magnetic layer provided between the magnetization pinned layer and the magnetization free layer. At least one of the magnetization free layer and the magnetization pinned layer is formed of CoFeGe, and the CoFeGe has a... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20080198515 - Thin film magnetic head having a bias magnetic layer provided with antiferromagnetic layer and a pinned layer provided with hard magnetic layer: A thin film magnetic head has: a spin valve having a pinned layer whose magnetization direction is fixed relative to an external magnetic field, a first nonmagnetic intermediate layer which is disposed on said pinned layer, and a free layer whose magnetization direction is changed according to the external magnetic... Agent: Knobbe Martens Olson & Bear LLP

20080192374 - Test method and apparatus for tunneling magnetoresistive element: A reproduction-element test method for a reproduction element that utilizes a tunneling magnetoresistive effect includes a measurement step for measuring first and second resistance values for different currents, a comparison step for comparing a resistance value differential curve that is calculated from a theoretical equation between tunneling magnetoresistiance and a... Agent: Greer, Burns & Crain

20080192375 - Write channel equalization level control in magnetic recording device: A magnetic recording device write channel includes a write equalization encoder for generating a write equalization level signal and a digital to analog converter for converting the write data signal to analog signals for recording. The write equalization level signal from the write equalization encoding device controls an impedance value... Agent: Schiff Hardin, LLP Patent Department

20080192377 - Hard disk drive apparatus, method to control flying on demand of hard disk drive apparatus using thermal asperity signal, and recording media for computer program thereof: A method to control an FOD (flying on demand) voltage of a hard disk drive apparatus using a TA (thermal asperity) signal includes providing at least one protrusion having a predetermined height on a disk, moving a magnetic head to a position of the protrusion, and applying an FOD voltage... Agent: Stanzione & Kim, LLP

20080192376 - Thermally assisted magnetic head: A thermally assisted magnetic head has a slider having a medium-facing surface, and a light source unit having a light source support substrate, and a light source disposed on the light source support substrate; the slider has a slider substrate and a magnetic head portion disposed on a side of... Agent: Oliff & Berridge, Plc

20080192378 - Adaptive data-dependent noise prediction (ddnp): A data-dependent noise predictive (DDNP) adaptation module operable to support Viterbi branch metric calculations within a hard disk drive (HDD) controller is provided. This DDNP adaptation module includes a DDNP filter tap coefficient adaptation module, a DDNP filter gain scaling module, and a DDNP bias compensation module. The combination of... Agent: Garlick Harrison & Markison

20080192379 - Manufacturing method for magnetic disk drive: Embodiments of the present invention provide a process that monitors a magnetic playback signal while gradually increasing an electricity supply amount for a heater to thereby determine contact between a magnetic head slider and a magnetic disk medium. According to one embodiment, after components for configuring a magnetic recording/playback portion... Agent: Townsend And Townsend And Crew LLP

20080192380 - Reduced tape stick tape drive systems: A read and/or write head for a tape drive system has a tape bearing surface that includes relatively smooth areas surrounded by relatively rough areas. Read and/or write elements are located in the smooth areas.... Agent: Brooks Kushman P.c. / Sun / Stk

20080192381 - Library apparatus and transporting mechanism therefor: When a rotation shaft reaches a first standstill position, a contact piece is received in a first hooked groove. A grasping mechanism unit is forced to enjoy a change in the attitude around the rotation shaft by the rotation angle of 90 degrees. When the rotation shaft further reaches a... Agent: Staas & Halsey LLP

20080192382 - Holder for holding a head carriage in a hard disk drive: A holder with includes: a holder body formed by molding a resin material, a contact surface on the holder body for receiving an operating object to be held on the holder body, a grip portion on the holder body at a position apart from the contact surface for being gripped... Agent: Greer, Burns & Crain

20080192383 - Magnetic head suspension: The present invention provides a magnetic head suspension, wherein a supporting portion such as an arm or base plate includes a pair of supporting pieces extending from its opposite sides in the widthwise direction to a tip-end side of the suspension, and a concave portion which is defined by the... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20080192384 - Integrated lead flexure with embedded traces: An integrated lead flexure for a disk drive head suspension and method for making the flexure. The flexure includes a spring metal layer, a dielectric layer over the spring metal layer, and a plurality of conductive leads on the dielectric layer. The spring metal layer has a first surface, and... Agent: Faegre & Benson LLP Patent Docketing

20080192385 - Actuator latch system of hard disk drive: An HDD includes a base, a swing arm having a notch at a rear end portion and mounted to the base so as to be rotatable, a VCM coil disposed on the rear end portion of the swing arm, a lower yoke and an upper yoke disposed below and above... Agent: Volentine & Whitt Pllc

20080192386 - Actuator latch system of hard disk drive: An actuator latch system of a hard disk drive (HDD) retains a rotatable swing arm of the HDD in place when a magnetic head of the HDD is parked. The actuator latch system includes a portion of the swing arm that defines a notch at an end portion of a... Agent: Volentine & Whitt Pllc

20080192387 - Control system and method for loading actuator arm of rotating storage device: A system includes a control module and an estimating module. The control module controls a speed of an actuator arm when the actuator arm moves from a parked position to an edge of a rotating storage medium and generates an arm control signal. The estimating module estimates a force to... Agent: Harness, Dickey & Pierce P.L.C

20080192388 - Uniformity in ccp magnetic read head devices: Improved performance uniformity among CPP magnetic read devices that include an oxide barrier has been achieved by fabricating the oxide layer from at least two separately formed CCP layers. Each CCP layer is given its own PIT and IAO treatment which is of shorter duration than the PIT/IAO treatment that... Agent: Stephen B. Ackerman

20080186609 - Data recording device and control method of same: Embodiments of the present invention provide a data recording device that allows swift data access even under the state that data access is difficult, and a control method for the device. According to one embodiment, when receiving a data reading command from an external host in the state that a... Agent: Townsend And Townsend And Crew LLP

20080186608 - Method of testing a magnetic head: A method of testing tests a magnetic head including a read element, a write element, and a predetermined electrical circuit. A magnetic signal on a magnetic recording medium is read using the read element in a state where the read element is subjected to noise due to electrical waves and... Agent: Greer, Burns & Crain

20080186610 - Apparatus, system, and method for an \"m\" servo pattern: An apparatus, system, and method are disclosed for an “M” servo pattern. A servo pattern write module is included to simultaneously create a first servo mark, a second servo mark, a third servo mark, and a fourth servo mark in an “M” servo pattern on a magnetic tape. The magnetic... Agent: Kunzler & Mckenzie

20080186611 - Flexible mounting slider with anti-static structure, head gimbal assembly and magnetic disk drive with the same: A flexible mounting slider with anti-static structure includes a slider body, an anti-static structure and a lead layer. The slider body includes an ABS, a slider back surface opposite to the ABS and a trailing edge connected with the ABS and the slider back surface. The trailing edge forms a... Agent: Nixon & Vanderhye, PC

20080186612 - Thermally reversible cross-linked poly (aryl ether ketone) media and method for high density data storage: A composition of matter for a recording medium in atomic force data storage devices. The composition includes one or more poly(aryl ether ketone) copolymers, each of the one or more poly(aryl ether ketone) copolymers including (a) a first monomer including an aryl ether ketone and (b) a second monomer including... Agent: Schmeiser, Olsen & Watts

20080186613 - Apparatus, system, and method for controlling recording head substrate bias voltage: An apparatus, system, and method are disclosed for dynamically controlling a recording head substrate bias voltage. The apparatus includes a midpoint module and a substrate module. The midpoint module calculates a midpoint voltage of a plurality of data read elements and servo read elements contained in the head. The substrate... Agent: Kunzler & Mckenzie

20080186614 - Library apparatus and transfer mechanism for the same: A transfer mechanism for a library apparatus enabling reduction in a size of the library apparatus. The transfer mechanism of the library apparatus includes first and second guide members extending parallel to a housing rack, a first transfer robot guided by the first and second guide members to move relative... Agent: Staas & Halsey LLP

20080186615 - Magnetic disc controller and method: A magnetic disk controller includes a first buffer that includes a first storage area that stores former portions of pieces of writing data, and a second storage area that stores latter portions of pieces of writing data; an encoding unit that encodes a former portion of the first piece of... Agent: Fish & Richardson P.C.

20080186617 - Disk drive device and method for error recovery procedure therefor: Embodiments of the present invention help to achieve a read error recovery, and suppress decreases in the capacity of the disk drive device and degradation in performance. In one embodiment, a hard disk drive (HDD) performs following control without use of repeatable run-out (RRO) compensation information on a magnetic disk... Agent: Townsend And Townsend And Crew LLP

20080186616 - Hard disk drive: Stable recording and reproduction of data onto and from a recording medium that requires precise tracking is provided by using a simple head tracking mechanism. In a hard disk drive (200), a piece of sector data to be written or read is pre-associated with a sector number of a sector... Agent: Greer, Burns & Crain

20080186618 - Architecture for write pre-compensation: An architecture to compensate for the non-linear effects of magnetic media, such as magnetic disk drives, that distorts data transitions when data is written to the media and in which the non-linear distortion is data sequence dependent. In one technique a circuit is used to alter the data transitions to... Agent: Garlick Harrison & Markison

20080186619 - Head-gap calculating device, storage device, head-gap calculating method, and computer product: A harmonic wave obtaining unit performs a fast Fourier transform (FFT) operation on repeatable run out (RRO) correction data in the time domain and transforms the RRO correction data into a higher harmonic signal data in the frequency domain. A selective-output unit outputs wavelength and amplitude of a first-order harmonic... Agent: Greer, Burns & Crain

20080186620 - Servo writer and servo writing process: A servo writer according to the present invention is a servo writer which writes a servo signal on a servo band of a magnetic tape. It comprises a magnetic tape driving system in which a magnetic tape supplied from a supply reel is taken up by a take-up reel to... Agent: Sughrue Mion, PLLC

20080186621 - Disk drive fly height monitoring arrangement and method: An exemplary embodiment providing one or more improvements includes a temperature sensing apparatus and method in a disk drive in which a temperature sensor is exposed to a disk induced flow that is generated by the rotation of the disk in the disk drive. The flow changes at least in... Agent: Pritzkau Patent Group, LLC

20080186623 - Ground vias for enhanced preamp heat release in hard disk drives: Described is a preamp flex cable for use in a hard drive. The flex cable incorporates a stiffener layer operable to provide a mechanical support, an insulating layer provided over the stiffener layer and having at least one via provided therein to expose the stiffener layer, and at least one... Agent: Sughrue Mion, PLLC

20080186622 - Protection structure to receiving a portable memory device with less locking structure: A cover assembly for a portable hard disk comprises an assembling unit having a frame hole at a front side thereof; the assembling unit having an opening; the opening causing the assembling unit being divided into an upper portion and a lower portion; two ribs serving to divide the frame... Agent: Hugo Lin

20080186624 - Electronic component ejection structure of electronic device: An electronic component ejection structure of an electronic device is provided. The ejection structure includes a guide element, a push rod, an elastic element, and a stopping element. The guide element is used to guide the push rod to move between a first and a second position. The stopping element... Agent: Rabin & Berdo, PC

20080186625 - Data storage medium and method for accessing digital data therein: A data storage medium is described. The data storage medium may comprise a first bit of magnetic medium for a first read-and-write head, and further comprise a second bit of magnetic medium. The second bit of magnetic medium, below the first bit of magnetic medium, may be for a second... Agent: Wpat, PC

20080186626 - Method of fabricating a magnetic head having a cpp sensor with elg fabrication and a partially milled stripe height: A method of fabricating a magnetic head including a CPP read head sensor. The CPP sensor includes a layered sensor stack including a free magnetic layer, a tunnel barrier layer, a pinned magnetic layer and an antiferromagnetic layer. An ion milling process is used to perform a partial depth material... Agent: Intellectual Property Law Offices

20080186627 - Perpendicular magnetic recording medium with granular structured magnetic recording layer, method for producing the same, and magnetic recording apparatus: Embodiments of the invention provide a perpendicular magnetic recording medium having a granular structured magnetic recording layer including many columnar grains, and grain boundary layers containing oxide, wherein a high medium S/N ratio is obtained while securing head flyability and durability. In an embodiment, the perpendicular magnetic recording medium includes... Agent: Townsend And Townsend And Crew LLP

20080186628 - Magnetic write head with helical coil structure using multiple materials: A magnetic write head for perpendicular magnetic recording that has a helical coil design that reduces manufacturing complexity and increases cycle time for manufacture. The write head includes a write pole and a helical write coil having upper coil portions that pass above the write pole and lower coil portions... Agent: Zilka-kotab, PC- Hit

20080186629 - Method of producing a magnetic disk device with servo data recorded on magnetic disk, head amplifier for magnetic disk device and disk device: Embodiments of the present invention provide a method of producing a magnetic disk device in which a plurality of heads can appropriately record servo data on a magnetic disk. The method of producing the magnetic disk device according to one embodiment includes the steps of: attaching a magnetic disk, a... Agent: Townsend And Townsend And Crew LLP

20080186630 - Structure to mount head stack assembly on base member and hard disk drive including the same: A head stack assembly (HSA) mounting structure and a hard disk drive (HDD) including the assembly includes a base member including a shaft protruding upwards and a shaft circumference groove formed around the shaft. An HSA is rotatably placed on the shaft through a pivot bearing including an inner case... Agent: Stanzione & Kim, LLP

20080186631 - Head stack assembly and hard disk drive apparatus with the same: A head stack assembly (HSA) including a swing arm including a core pivotably coupled to a base of a hard disk drive apparatus (HDD) and at least one arm blade extending horizontally from the core, a suspension extending from a front end of the arm blade, a head slider mounted... Agent: Stanzione & Kim, LLP

20080186632 - Actuator latch system of hard disk drive: An actuator latch system of a hard disk drive (HDD) retains a rotatable swing arm of the HDD in place when a magnetic head of the HDD is parked. The actuator latch system includes a portion of the swing arm that defines a notch at an end portion of a... Agent: Volentine & Whitt PLLC

20080186633 - Micro torque and micro stiffness measurement device: In a method and apparatus for testing a head-gimbal assembly (HGA), a HGA is placed in contact with force transducers mounted on a rotational stage. The force transducers are adjusted to position the transducers around a rotational center of the rotational stage. The rotational stage is rotated, and the torque... Agent: Kenyon & Kenyon LLP

20080186634 - Apparatus, system, and method for detecting the formation of a short between a magnetoresistive head and a head substrate: An apparatus, system, and method are disclosed for detecting the formation of a short between a magnetoresistive (“MR”) head and a head substrate. The apparatus is presented with a logic unit containing a plurality of modules configured to functionally execute the necessary steps of generating a baseline electric potential level... Agent: Kunzler & Mckenzie

20080186635 - Magnetic field detector, and current detection device, position detection device and rotation detection devices using the magnetic field detector: A magnetic field detector having a reference magnetoresistive element and a magnetic field detecting magnetoresistive element. The reference magnetoresistive element and the magnetic field detecting magnetoresistive element each has a stack structure including an antiferromagnetic layer, a fixed layer of a ferromagnetic material with the direction of magnetization fixed by... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080186637 - Reader shield/electrode structure for imrpoved stray field and electrical performance: A magnetic sensing device includes a first electrode, a second electrode, a first magnetic shield, a second magnetic shield, and a sensor. The first magnetic shield forms at least a portion of the first electrode. The second magnetic shield includes a first region that forms at least a portion of... Agent: Kinney & Lange, P.A.

20080186636 - Transducing head including a magnetic element exhibiting varying permeability: A transducing head has a main pole and at least one magnetic element (such as a return pole or a shield) which provides a potential return path for a magnetic field produced by the main pole. The magnetic element is spaced from the main pole. The magnetic element has a... Agent: Kinney & Lange, P.A.

20080186640 - Magnetoresistance effect type read-head and method of producing the same: The magnetoresistance effect type read-head is capable of stably applying bias magnetic fields of hard films to a read-element, stabilizing characteristics of the read-head and improving quality thereof. The magnetoresistance effect type read-head comprises: the read-element; a couple of the hard films sandwiching the read-element, the hard films applying bias... Agent: Greer, Burns & Crain

20080186639 - Tunneling magnetic sensing element and method for producing same: A tunneling magnetic sensing element includes a pinned magnetic layer with a magnetization direction that is pinned in one direction, an insulating barrier layer, and a free magnetic layer with a magnetization direction that varies in response to an external magnetic field. The insulating barrier layer comprises magnesium (Mg), and... Agent: Brinks Hofer Gilson & Lione

20080186638 - Tunneling magnetic sensing element having free magnetic layer inserted with nonmagnetic metal layers: A tunneling magnetic sensing element includes a free magnetic layer disposed on an insulating barrier layer, the free magnetic layer including an enhancement layer, a first soft magnetic layer, a first nonmagnetic metal layer, a second soft magnetic layer, a second nonmagnetic metal layer, and a third soft magnetic layer... Agent: Brinks Hofer Gilson & Lione