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Dynamic magnetic information storage or retrieval March listing by industry category 03/12

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
03/29/2012 > 15 patent applications in 12 patent subcategories. listing by industry category

20120075738 - Inspection apparatus and inspection method for magnetic head or magnetic disk and inspection method for magnetic head: An inspection apparatus and method for a magnetic head or a magnetic disk is conducted using a two-carriage method. In particular, the magnetic disk is rotated by a spindle, a test signal is written into the magnetic disk by one magnetic head mounted in one carriage which moves in the... Agent: Hitachi High-technologies Corporation

20120075739 - High-rate transition control code for magnetic recording channels: A method and apparatus for reducing noise in a communication signal is provided. The method includes converting raw channel data from the communication signal to a sequence of transition code symbols, each symbol having a plurality of bits, each bit having a position within the symbol. The method also includes... Agent: Stmicroelectronics, Inc.

20120075740 - Thermally assisted magnetic recording disk, manufacturing method thereof, and magnetic recording method: The invention provides a magnetic disk that solves (1) a problem of cross-talk that cannot be solved even by an existing thermally assisted recording method or a discrete method (DTM or the like), (2) a problem of surface flatness, which an existing embedding type DTM or the like has, and... Agent: Wd Media (singapore) Pte. Ltd.

20120075741 - Arm coil assembly, arm flexible cable assembly and disk drive unit with the same: An arm coil assembly includes a drive arm having at least two grounding pins formed on a mounting region thereof and a voice coil fixed on the tailing end of the drive arm for controlling the drive arm. The grounding pins are provided for electrically connecting with a flexible printed... Agent: Sae Magnetics (h.k) Ltd.

20120075743 - Communication apparatus and method: According to one embodiment, a communication apparatus includes a storage unit, a state detecting unit, a communication unit, and a communication control unit. The storage unit configured to store information. The state detecting unit configured to detect, at least one time during an operation of the communication apparatus, whether the... Agent: Kabushiki Kaisha Toshiba

20120075742 - Magnetic disk device, electronic apparatus and, head control method: A magnetic disk device includes a head, a coil motor, a drive circuit, a voltage detector, a head position calculation unit, a velocity calculation unit, a counter electromotive voltage calculation unit, a coil resistance estimation unit, and a control unit. The head position calculation unit calculates a position of the... Agent: Kabushiki Kaisha Toshiba

20120075744 - Method of optimizing flying height of head and hard disk drive manufactured by the same: A hard disk drive includes a controller that optimizes a flying height of a head of a hard disk drive. The controller determines an optimal flying height of a head based on a preset table value and an MRR value of a head measured during a hard disk drive manufacturing... Agent: Samsung Electronics Co., Ltd

20120075745 - Sealing a corner filter: A hard disk drive includes a base plate, a cover mounted to the base plate and a corner filter disposed proximate to a corner of the hard disk drive. A corner filter seal disposed between the base plate and the cover. The corner filter seal is configured to prevent leakage... Agent:

20120075746 - Base unit for use in storage disk drive apparatus, spindle motor including the base unit, and storage disk drive apparatus including the spindle motor: A base unit for use in a storage disk drive apparatus includes a base portion; a stator core including a plurality of teeth; U-phase, V-phase, and W-phase coils; U-phase, V-phase, and W-phase common wires; and a circuit board. The U-phase, V-phase, and W-phase coils are wound on the teeth and... Agent: Nidec Corporation

20120075747 - System, method and apparatus for shape-engineered islands of exchange spring or exchange coupled composite, bit patterned media: A hard disk drive has a magnetic media disk comprising a substrate having an axis, and an exchange coupled, bit patterned media on the substrate arranged in a plurality of tracks. Each of the tracks has a pattern of islands extending in an axial direction from the disk. Each island... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20120075748 - Perpendicular write head with laminated side shields: A perpendicular write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing side, a leading side that is opposite the trailing side, and first and second sides; side gaps, wherein... Agent: Seagate Technology LLC

20120075749 - Magnetic write head with thin and thick portions for balancing writability and ate: A perpendicular magnetic recording (PMR) head is fabricated with a tapered main pole having a variable thickness. The tapered portion of the pole is at the ABS tip and it can be formed by bevels at the leading or trailing edges or both. The taper terminates to form a region... Agent: Headway Technologies, Inc.

20120075750 - Integrated load-unload ramp structure with downstream spoiler and slit-shroud for a hard-disk drive: An integrated load-unload ramp structure with a downstream spoiler and a slit-shroud for a hard-disk drive (HDD). The integrated load-unload (L/UL) ramp structure includes a L/UL ramp-structure portion, at least one downstream spoiler integrally attached to the L/UL ramp-structure portion, and a slit-shroud including at least one wing, the slit-shroud... Agent:

20120075751 - Current perpendicular to plane magnetoresistance read head design using a current confinement structure proximal to an air bearing surface: A current to perpendicular to plane (CPP) magnetoresistance (MR) read head using current confinement proximal to an air bearing surface (ABS) is disclosed. A CPP MR read head includes a first shield, an MR sensor formed on the first shield, and a second shield contacting the MR sensor proximal to... Agent:

20120075752 - Magnetic head: According to one embodiment, there is provided a magnetic head for a three-dimensional magnetic recording/reproducing apparatus, the head executing reading from or writing to a recording medium, utilizing a magnetic resonance, the medium including stacked layers formed of magnetic substances having different resonance frequencies, the head comprising a spin torque... Agent: Kabushiki Kaisha Toshiba

  
03/22/2012 > 11 patent applications in 9 patent subcategories. listing by industry category

20120069465 - Spin torque oscillator and magnetic recording head and magnetic recording device mounted with the spin torque oscillator: The present invention provides a spin torque oscillator that can realize stable oscillation and has high reliability. A laminated structure including a first magnetic layer 1 having a bcc crystal structure and having in-plane magnetic anisotropy and a second magnetic layer 2 having perpendicular magnetic anisotropy laminated on the first... Agent: Hitachi, Ltd.

20120069466 - Apparatus of magnetic disc: In a magnetic disk apparatus including a magnetic disk, a recording head that writes information on the magnetic disk, and a controller that controls a writing operation of the recording head to the magnetic disk, the controller controls the writing operation such that the recording head writes information on a... Agent: Wd Media (singapore) Pte. Ltd.

20120069467 - Magnetic recording medium and magnetic disk drive using the same: The present invention provides a magnetic recording medium and a magnetic disk drive using the same, capable of keeping flying height and posture of the head slider constant when a discrete track medium (magnetic recording medium) includes tracks as data zones, and non-data zones (groove) formed between adjacent tracks. The... Agent: Hitachi, Ltd.

20120069468 - Magnetic recording medium, method of manufacturing the same, and magnetic recording apparatus: According to one embodiment, in a method of manufacturing a magnetic recording medium which is configured such that a ferromagnetic recording part is formed on a substrate in a desired track pattern or a desired bit pattern, a ferromagnetic film is formed on the substrate, and then a mask is... Agent:

20120069469 - Clamping device for a rotatable component of a machine including a balance hole configured to confine a counterweight: A clamping device for coupling a rotatable component of a machine with a shaft, including a balance hole configured to confine a counterweight. The clamping device includes a circular plate. The circular plate includes at least one fastener hole configured to accept a fastener, and at least one balance hole.... Agent:

20120069470 - Pmr head with integrated side shield (iss): A PMR head comprises a substrate, a magnetic pole formed over the substrate, the pole having a pole tip having a cross-sectional tapered shape wherein the pole tip is surrounded by a write gap layer, an integrated shield comprising side shields on the substrate laterally surrounding the pole tip and... Agent: Headway Technologies, Inc.

20120069472 - Current-perpendicular-to-plane (cpp) read sensor with ferromagnetic buffer and seed layers: A current-perpendicular-to-plane (CPP) tunneling magnetoresistance (TMR) or giant magnetoresistance (GMR) read sensor with ferromagnetic buffer and seed layers is proposed for high-resolution magnetic recording. The ferromagnetic buffer layer is preferably formed of an amorphous Co—X (where X is Hf, Y, Zr, etc.) film. It provides the CPP read sensor with... Agent: Hitachi Global Storage Technologies Netherlands B. V.

20120069471 - Current-perpendicular-to-plane (cpp) read sensor with ferromagnetic buffer, shielding and seed layers: A current-perpendicular-to-plane (CPP) tunneling magnetoresistance (TMR) or giant magnetoresistance (GMR) read sensor with ferromagnetic buffer, shielding and seed layers is proposed for high-resolution magnetic recording. The ferromagnetic buffer layer is preferably formed of an amorphous Co—X (where X is Hf, Y, Zr, etc.) film. It provides the CPP read sensor... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20120069473 - Magnetic media formed by a thin planar arbitrary gap pattern magnetic head: Magnetic media made using planar magnetic heads. A head may comprise a substrate having conductive thru-hole vias extending therethrough, a first magnetic layer deposited and patterned on the substrate, a first insulation layer deposited and patterned on the first magnetic layer, a conductive coil layer deposited and patterned on the... Agent: Advanced Research Corporation

20120069474 - Magnetic head, magnetic head assembly, and magnetic recording/reproducing apparatus: According to one embodiment, a magnetic head includes a reproducing section. The reproducing section has a medium facing surface facing a magnetic recording medium and detects a direction of magnetization recorded in the medium. The reproducing section includes a first magnetic pinned layer, a second magnetic pinned layer, and a... Agent: Kabushiki Kaisha Toshiba

20120069475 - Head suspension load beam with stiffening features: Embodiments provide head suspension load beams formed from a sheet of material with one or more stiffening members molded on the sheet. In some cases the sheet material includes an out-of-plane portion extending out at a nonzero angle, and the stiffening member includes a rib formed on the sheet material... Agent:

  
03/15/2012 > 14 patent applications in 11 patent subcategories. listing by industry category

20120063023 - Systems and methods for block-wise inter-track interference compensation: Various embodiments of the present invention provide systems and methods for data processing. As an example, a block-wise data processing circuit is discussed that includes: a data buffer, an inter-track interference response circuit, and an inter-track interference signal estimator circuit. The data buffer is operable to store a previous track... Agent: Lsi Corporation

20120063022 - Systems and methods for inter-track interference compensation: Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes: a data buffer, an inter-track interference response circuit, and an inter-track interference signal estimator circuit. The data buffer is operable to store a previous track data... Agent: Lsi Corporation

20120063024 - Systems and methods for handling sector gaps in inter-track interference compensation: Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes an inter-track interference determination circuit operable to calculate an inter-track interference from a previous track data set based at least in part on the previous track... Agent: Lsi Corporation

20120063025 - High speed writer: An apparatus comprising a control circuit, a driver circuit and a write head. The control circuit may be configured to generate a plurality of control signals in response to a data input signal. The driver circuit may be configured to generate a differential write control signal in response to the... Agent:

20120063026 - Baseplate with recessed region in a hard-disk drive (hdd): Approaches for a hard-disk drive (HDD) baseplate comprising a recessed region that provides additional clearance for a disk. The protective enclosure of the HDD comprises a baseplate. The surface of the baseplate, which opposes a magnetic-recording disk, comprises a recessed region near the outer diameter (OD) of the magnetic-recording disk.... Agent:

20120063027 - Bit patterned magnetic storage medium: A magnetic storage medium comprises a plurality of discrete magnetic elements and first and second adjoining servo sectors. Each of the servo sectors comprises first and second rows of the discrete magnetic elements extending in a track direction. The second row of the discrete magnetic elements are stacked relative to... Agent: Seagate Technology LLC

20120063028 - Magnetic recording apparatus: According to one embodiment, there is provided a magnetic recording apparatus including a bit-patterned medium having a data area including magnetic dot rows each of which includes magnetic dots, a magnetic head having a width covering a plurality of magnetic dot rows, and an actuator configured to actuate the magnetic... Agent: Kabushiki Kaisha Toshiba

20120063030 - Fluid dynamic bearing apparatus, spindle motor, and disk drive apparatus: In a fluid dynamic bearing apparatus, an oil buffer is defined between a thrust gap and a pumping gap. The oil buffer has an axial dimension greater than that of the thrust gap, and/or has a radial dimension greater than that of the pumping gap. An air bubble generated in... Agent: Nidec Corporation

20120063029 - Motor and disk drive apparatus: Inner circumferential surfaces of a rotor holder and a turntable are in contact with an outer circumferential surface of a shaft. This stabilizes coaxiality of both the rotor holder and the turntable with respect to the shaft. An upper cover portion of the rotor holder includes fixing holes. The turntable... Agent: Nidec Corporation

20120063031 - Tranducing head writer having write pole bridge feature, and devices thereof: A transducing head writer comprising a write pole having write pole tip, a yoke disposed on the write pole at a location that is recessed from the write pole tip, and a bridge feature disposed on the write pole between the yoke and the write pole tip, where the bridge... Agent: Seagate Technology LLC

20120063032 - Magnetic flux barrier: Data storage systems having barriers that may reduce erasure flux and increase write-ability are provided. Data storage systems include a writing element. The writing element has a write pole with a flare region. A magnetic flux barrier is located along the write pole flare region. The magnetic flux barrier is... Agent:

20120063033 - Magnetic field sensor with graphene sense layer and ferromagnetic biasing layer below the sense layer: A graphene magnetic field sensor has a ferromagnetic biasing layer located beneath and in close proximity to the graphene sense layer. The sensor includes a suitable substrate, the ferromagnetic biasing layer, the graphene sense layer, and an electrically insulating underlayer between the ferromagnetic biasing layer and the graphene sense layer.... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20120063034 - Current-perpendicular-to-the-plane (cpp) magnetoresistive (mr) sensor with improved insulating structure: A current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor, like a CPP MR disk drive read head, has an improved insulating structure surrounding the stack of layers making up the sensor. The sensor has a first silicon nitride layer with a thickness between about 1 and 5 nm on the side edges of... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20120063035 - Current-perpendicular-to-the-plane (cpp) magnetoresistive (mr) sensor with reference layer integrated in magnetic shield: A current-perpendicular-to-the-plane magnetoresistive (CPP MR) sensor has a shield layers that also functions as the sensor's reference layer. In a CPP MR disk drive read head, the shield layer has a fixed magnetization oriented substantially parallel to the air-bearing surface (ABS) of the slider that supports the read head. The... Agent: Hitachi Global Storage Technologies Netherlands B.v.

  
03/08/2012 > 3 patent applications in 3 patent subcategories. listing by industry category

20120057255 - Inspection device or inspection method for magnetic head or magnetic disc, and magnetic disc recording device and magnetic disc recording method: An inspection device or inspection method for a magnetic head or magnetic disc which can form a servo pattern applicable to a write system, and a magnetic disc recording device or magnetic disc recording method. In inspection or recording of a magnetic disc, which rotates the magnetic disc, a servo... Agent:

20120057256 - Multi-layer sheet product: A magnetically-activatable sheet product is provided comprising a pair of laminated outer sheets at least one of which is provided with a pigment/binder primer coat on its inward facing surface, between which is a magnetic layer comprising magnetically-activatable particles in a binder matrix, the outer sheets having sufficient opacity to... Agent: Arjo Wiggins Limited

20120057257 - Perpendicular magnetic recoding head with a laminated pole: A laminated write pole layer for a PMR write head is disclosed in which a plurality of “n” magnetic layers and “n−1” non-magnetic spacers are formed in an alternating fashion on a substrate. The non-magnetic spacers promote exchange decoupling or antiferromagnetic coupling between adjacent magnetic layers. Writability is improved when... Agent:

  
03/01/2012 > 19 patent applications in 16 patent subcategories. listing by industry category

20120050903 - Engaging test slots: In general, a test slot is engaged with automated machinery to inhibit movement of the test slot, thereby inhibiting transmission of vibration from the test slot to its surroundings. While the automated machinery is engaged with the test slot, the automated machinery is actuated to insert a storage device into... Agent: Teradyne, Inc.

20120050904 - Method and apparatus for compensating for disturbance and disk drive employing the same: A method and apparatus for compensating for a disturbance by detecting a periodic external disturbance applied to a data storage apparatus is provided. The method includes: calculating a correlation coefficient for a first signal corresponding to a first period and a second period that is adjacent to the first period... Agent: Samsung Electronics Co., Ltd.

20120050905 - Soc hardware engines for multi-rate notch filters: A hard disk drive that includes a disk with servo bits. The hard disk drive also includes a central processing unit that performs a servo routine using the servo bits, and a separate a notch hardware engine that is utilize by the central processing unit to perform a notch filter... Agent: Samsung Electronics Co., Ltd.

20120050907 - Detection of proximity between a sensor and an object: An apparatus includes a sensor having a heater. The apparatus also includes a proximity detection component that analyzes a sensed signal, obtained from the sensor during application of an alternating current signal to the heater of the sensor, and responsively provides an output indicative of whether proximity exists between the... Agent: Seagate Technology LLC

20120050906 - Thermally assisted recording head with near field transducer having integral heatsink: A write head structure for use with thermally assisted recording is disclosed. Improved heat sinking is provided for removing thermal energy created by a ridge aperture near field light transducer. Metal films conduct heat away from the region near the ridge aperture to the high pressure air film at the... Agent:

20120050908 - Method for manufacturing megnetic tape with servo signal written therein, magnetic tape with servo signal written therein, and servo writer: To manufacture a perpendicular magnetic recording-type magnetic tape having a servo signal written therein by a write head having a magnetic gap, a perpendicular direct-current erasing step in which a magnetic tape is magnetized in one direction that is one of two opposite thickness directions of the magnetic tape is... Agent: Fujifilm Corporation

20120050909 - Tape guide roller: There is disclosed a tape guide roller for guiding a tape (11) in a tape storage. The tape guide roller is tiltable such that by tilting the tape guide roller the tape (11) may be returned from a laterally offset position to a centered position. An actuator (1560) of the... Agent: International Business Machines Corporation

20120050910 - Magnetic head tracking control method, servo signal verification method, magnetic tape drive, and servo writer: A servo signal in which a magnetic pattern composed of a first portion magnetized in one direction that is one of two opposite thickness directions and a second portion magnetized in a direction opposite to the one direction is repeatedly arranged in a longitudinal direction of the tape at predetermined... Agent: Fujifilm Corporation

20120050912 - Hydrodynamic bearing assembly, motor provided with the hydrodynamic bearing assembly and recording disk driving device equipped with the motor: There are provided a hydrodynamic bearing assembly capable of implementing a flat-type oil cover, while reducing a thickness of the oil cover, by strengthening the rigidity of the oil cover, a motor having the hydrodynamic bearing assembly, and a recording disk driving device equipped with the motor. The hydrodynamic bearing... Agent: Samsung Electro-mechanics Co., Ltd.

20120050911 - Spindle motor having magnetic circuit for stator and rotor magnet, and storage disk drive having the same: A spindle motor for use in a 2.5 inch 7 mm high disk drive apparatus includes a base portion; a stator arranged above the base portion; a rotor hub including a cover portion positioned above the stator, and a side wall portion arranged to extend downward from an outer edge... Agent: Nidec Corporation

20120050913 - Apparatus for clamping disk and motor assembly having the same: There are provided an apparatus for clamping a disk and a motor assembly having the same. The apparatus for clamping a disk according to the present invention includes an apparatus for clamping a disk, including: a rotor case jointed with an outer peripheral surface of a shaft and rotating together... Agent: Samsung Electro-mechanics Co., Ltd.

20120050914 - Perpendicular magnetic recording medium and magentic recording and reproducing apparatus: A perpendicular magnetic recording medium that is excellent in terms of electromagnetic conversion characteristics and can achieve the demand for the recording density growth, and a magnetic recording and reproducing apparatus provided with the perpendicular magnetic recording medium are provided. The perpendicular magnetic recording medium has at least a backing... Agent: Showa Denko K.k.

20120050915 - Method for manufacturing a perpendicular magnetic write head having a leading edge tapered write pole, self aligned side shield and independent trailing shield: A method for manufacturing a magnetic write head having a tapered write pole as well as a leading edge taper, and independent trailing and side magnetic shields. The method allows the write pole to be constructed by a dry process wherein the write pole material is either deposited by a... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20120050916 - Hydrodynamic disc drive spindle motor having hydro bearing with lubricant: Disc drive spindle motor having hydro bearing including a central axis; a stationary member which is fixed with respect to a housing and coaxial with the central axis; a stator is fixed with respect to the housing; a rotatable member which is rotatable about the central axis with respect to... Agent: Seagate Technology LLC

20120050917 - Top bond pad bias and variation control: An assembly includes a slider and a suspension assembly. The slider includes an air bearing surface and a slider mounting surface opposite the air bearing surface. There are a plurality of slider pads on the slider mounting surface. The suspension assembly includes a plurality of suspension pads on a suspension... Agent: Seagate Technology LLC

20120050918 - Contamination and servo write robust abs for server applications: A head slider for a disk drive storage device. The head slider is adapted to fly at the target height above the disk, reduce contamination by preventing particles from being trapped under the head slider, fly well in helium at low velocity and obtain a manufacturing tolerance so that multiple... Agent:

20120050919 - Current perpendicular magnetoresistive sensor with capacitance balancing: A perpendicular magnetic read head having a balanced capacitive coupling with the substrate. The read head includes a magnetoresistive sensor with first and second magnetic, electrically conductive shields separated from a substrate by a layer of non-magnetic, electrically insulating material. A dummy magnetic shield is formed on the non-magnetic electrically... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20120050920 - Method of manufacturing magnetoresistive element: According to one embodiment, a method of manufacturing a magnetoresistive element includes a layered structure and a pair of electrodes, the layered structure including a cap layer, a magnetization pinned layer, a magnetization free layer, a spacer layer and a functional layer provided in the magnetization pinned layer, between the... Agent: Kabushiki Kaisha Toshiba

20120050921 - Damped magnetic head: A magnetic head comprises a main pole, a return pole and a magnetic damper. The main pole is configured to emit flux and the return pole is configured to return the flux to the main pole. The magnetic damper is inductively coupled to the return pole and comprises a first... Agent: Seagate Technology LLC

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