|Dynamic magnetic information storage or retrieval patents - Monitor Patents|
USPTO Class 360 | Browse by Industry: Previous - Next | All
06/2011 | Recent | 15: May | Apr | Mar | Feb | Jan | 14: Dec | Nov | Oct | Sep | Aug | Jul | Jun | May | Apr | Mar | Feb | Jan | 13: Dec | Nov | Oct | Sep | Aug | Jul | Jun | May | Apr | Mar | Feb | Jan | 12: Dec | Nov | Oct | Sep | Aug | July | June | May | April | Mar | Feb | Jan | 11: Dec | Nov | Oct | Sep | Aug | Jul | Jun | May | Apr | Mar | Feb | Jan | 10: Dec | Nov | Oct | Sep | Aug | Jul | Jun | May | Apr | Mar | Feb | Jan | | 09: Dec | Nov | Oct | Sep | Aug | Jl | Jn | May | Apr | Mar | Fb | Jn | | 2008 | 2007 |
Dynamic magnetic information storage or retrieval June invention type 06/11Below 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. 06/30/2011 > patent applications in patent subcategories. invention type
20110157735 - Method of magnetic transfer and a magnetic recording medium: A method of magnetic transfer, including placing a first medium in contact with a second medium, pressing the first and second media together to form an adhered body, applying a magnetic field to the adhered body, and moving the magnetic field relatively to the adhered body, so as to transfer... Agent: Fuji Electric Device Technology Co., Ltd.
20110157736 - Integrating control of slider bias potential, touch-down detection and fly-height determination in a hdd: A hard disk drive (HDD) including a slider. The slider includes a resistive temperature detector (RTD) configured to detect a temperature generated by one or more of slider spacing and contact with a media of said HDD. HDD also includes a slider signal controller configured to control bias signal of... Agent:
20110157737 - Systems and methods for detecting a reference pattern: Various embodiments of the present invention provide systems and methods for locating a reference pattern on a storage medium. For example, various embodiments of the present invention provide systems for locating a reference pattern on a storage medium. Such systems include a sliding window phase calculator circuit, a delay circuit... Agent: Lsi Corporation
20110157738 - Method for manufacturing thermally-assisted magnetic recording head by semi-active alignment: A method for manufacturing a thermally-assisted magnetic recording head is provided, in which joined are: a light source unit that includes a light source having a surface including a light-emission center on the joining surface side of a unit substrate; and a slider that includes an optical system having a... Agent: Tdk Corporation
20110157740 - Fly-height management in a hard disk drive (hdd): A hard disk drive (HDD) including a first resistive temperature detector (RTD) configured to detect a temperature generated by proximity of a slider and a media. The first RTD is proximate an air bearing surface (ABS) of the slider. The HDD also includes a second RTD configured to detect at... Agent:
20110157739 - Negative biasing a slider with respect to a disk to reduce slider wear and provide burnish rate control: In a method for negatively biasing a slider with respect to a disk to reduce slider wear and provide burnish rate control a negative bias voltage is generated between the slider and the disk surface respectively, the negative bias voltage causing slider/disk contact wear to occur on the disk instead... Agent:
20110157741 - Linear recording device for executing optimum writing upon receipt of series of commands including mixed read and write commands and a method for executing the same: A tape recording device, method, and computer program product are provided for performing operations of position movement, reading, and writing on a tape medium, and receiving a series of commands from an upper-layer device. The tape recording device includes a buffer for temporarily storing data related to the reading and... Agent: International Business Machines Corporation
20110157742 - Pre-use tape cartridge verification: A method for verifying a tape cartridge is presented. One method includes introducing a tape cartridge into a tape library wherein when introduced, the tape cartridge can then be loaded in a tape drive in an attempt to bring the tape cartridge to a functionally ready state with the tape... Agent: Spectra Logic Corporation
20110157743 - Bearing device and swing arm assembly for magnetic disk: A bearing device includes a shaft having an axis, plural rolling bearings arranged at axially separated positions and rotatably supporting the shaft, a first cylindrical member for supporting the rolling bearings therein and having a first screw on a part of an outer surface thereof, a second cylindrical member having... Agent:
20110157744 - Aerostatic sealing in a hard disk drive (hdd): An aerodynamic device for aerostatic sealing in a hard disk drive (HDD) including an exterior surface configured to modify airflow in the HDD and proximate at least one magnetic disk and an inlet port configured to receive pressurized airflow. The aerodynamic device also includes a plurality of outlet ports disposed... Agent:
20110157745 - Air pump in a hard disk drive (hdd): An air pump for generating air pressure in a hard disk drive (HDD) including a rotor disposed inside the HDD. The rotor comprises a first air pressure generating feature. The air pump further includes a stator. The stator includes a second air pressure generating feature. The first air pressure generating... Agent:
20110157746 - Perpendicular magnetic recording head and magnetic recording device: A perpendicular magnetic write head includes: a magnetic pole; a pair of side shields on both sides, in a write-track width direction, of the magnetic pole with respective side gaps in between; a trailing shield on a trailing side of the magnetic pole and the pair of side shields with... Agent: Tdk Corporation
20110157747 - Inhibiting oxidation of organic contaminants in a hard disk drive (hdd): An information storage system including an enclosure, a rotating data storage medium including a surface, a slider including an ABS and an airborne oxidizable contaminant disposed in the enclosure. The system also includes an antioxidant absorbed onto the surface of the data storage medium. The antioxidant inhibits oxidation of the... Agent:
20110157748 - Head and disk drive with same: According to one embodiment, a facing surface of a slider of a head includes a leading step on an inflow side of the slider, a leading pad on the leading step, a pair of side steps extending in a first direction from the leading step toward an outflow end of... Agent: Kabushiki Kaisha Toshiba
20110157749 - Head-slider configured to avoid contact with a magnetic-recording disk, a hard-disk drive including the head-slider, and a method for manufacturing the head-slider: A head-slider. The head-slider includes a magnetic-recording head and an air-bearing surface. The air-bearing surface includes air-bearing portions, shallow-recessed surfaces, and a deep-recessed surface. Air-bearing portions are configured to fly nearest to a magnetic-recording disk; shallow-recessed surfaces have a first depth from the air-bearing portions; the deep-recessed surface has a... Agent:
20110157750 - Top bond pad for transducing head interconnect: A slider includes a slider body having a first side and edges defined adjacent to the first side, at least two separate insulators each adjacent to the first side of the slider body and supported by the slider body, and a conductive trace adjacent to each of the at least... Agent: Seagate Technology LLC06/23/2011 > patent applications in patent subcategories. invention type
20110149424 - Data storage device tester: A data storage device (DSD) tester for testing a DSD is disclosed. The DSD tester comprises a plurality of bays, a screen, and control circuitry operable to detect when a first DSD has been inserted into a first bay. Independent of operator input, a graphical user interface (GUI) displayed on... Agent: Western Digital Technologies, Inc.
20110149425 - System for monitoring lsi supplying current to load: According to one embodiment, A system includes a first LSI, a second LSI, a controller and a current monitoring and determination module. The first LSI operates on a first power supply voltage generated by a first voltage regulator included in the second LSI. The module operates on a device power... Agent: Kabushiki Kaisha Toshiba
20110149426 - Heat-assisted magnetic recording head with internal mirror: A heat-assisted magnetic recording head has an internal mirror that includes a reflecting film support body and a reflecting film. The internal mirror reflects light that comes from above a waveguide so that the reflected light travels through the waveguide toward a medium facing surface. The reflecting film support body... Agent: Headway Technologies, Inc.
20110149427 - Suppressing adjacent track interference/far track interference (ati/fti) in a hard disk drive (hdd) by an external magnetic field: A hard disk drive (HDD) comprising a magnetic disk that includes a data storage surface and an external magnetic field parallel to the data storage surface for suppressing track interference.... Agent:
20110149431 - Fall detection apparatus, magnetic disk apparatus, and portable electronic apparatus: A fall detection apparatus that detects values ax, ay, and az in accordance with acceleration in three mutually orthogonal axes (x, y, and z). Among these detected values, the fall detection apparatus determines values dxy and dzy which are the differences between the detected value for a reference axis, e.g.,... Agent: Murata Manufacturing Co., Ltd.
20110149429 - Floating head device for floating a head on a magnetic disk and methods of manufacturing a magnetic disk: In one embodiment, a method of manufacturing a magnetic disk includes rotating a magnetic disk, supporting a floating head on the rotating magnetic disk, the floating head having a slider body and an element unit formed on a trailing edge of the slider body, contacting a floating surface of the... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110149430 - Magnetic head slider and magnetic disk drive: A magnetic head slider is disclosed. The magnetic head slider includes a slider substrate and a laminated magnetic head element on the slider substrate. Additionally, the laminated magnetic head element includes a magnetoresistance effect element and a recording magnetic pole formed in a layer higher than the magnetoresistance effect element.... Agent:
20110149428 - Slider fly-height control in a hard disk drive: In fly-height control system, a slider comprises a spin torque oscillator that is configured for generating an RF carrier signal which is out-of-band of a frequency band of read data, write data, and control signals in a hard disk drive.... Agent:
20110149432 - Information storage device with multiple-use fields in servo pattern: An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set... Agent:
20110149433 - Information storage device with multiple-use fields in servo pattern: An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set... Agent:
20110149434 - Information storage device with multiple-use fields in servo pattern: An embodiment of the present invention implements some or all major servo subfunctions for a storage device in integrated servo fields comprising sequences of encoded bits having selected mathematical properties. The integrated servo field is composed of a number of encoded sequences, which are members of a selected sequence set... Agent:
20110149435 - Absorbing contaminants by diffusion in a low density gas filled hard disk drive (hdd): A hard disk drive (HDD) including a magnetic disk, a low density gas within the HDD and an absorber configured to absorb contaminants within the HDD by diffusion.... Agent:
20110149436 - Hard disk drives using ztmd raffinate to trap sub-micrometer particles: A magnetic disk drive having a layer of ZTMD raffinate coated within a housing of the disk drive to trap debris in order to prevent contamination related failure of the disk drive. The ZTMD raffinate can be applied to the inside of the housing of the disk drive, such as... Agent:
20110149437 - Method and apparatus for read and write data in a disk drive with discrete track disk: According to one embodiment, a disk drive includes a disk and a data read/write module. The disk has a disk substrate, tracks and non-recording areas. The tracks and the non-recording areas are formed on the disk substrate and arranged in the radial direction of the disk. The tracks are magnetic... Agent: Kabushiki Kaisha Toshiba
20110149438 - Unique media identifier: An apparatus and method for providing a unique identifier for data storage media is disclosed herein. The servo track of the data storage media is encoded one or more times with media manufacturer's data. The media manufacturer's data includes a variety of information including the unique identifier. The unique identifier... Agent: Quantum Corporation
20110149440 - Head gimbal assembly and disk drive with a piezoelectric element: A head gimbal assembly having a stage fixed to a head-slider. A piezoelectric element which comprises; an upper surface, a first side surface, a second side surface, a lower surface, a first electrode, a second electrode, and a gap between the first and second electrodes on the lower surface, the... Agent:
20110149439 - Head gimbal assembly having a radial rotary piezoelectric microactuator between a read head and a flexure tongue: A novel head gimbal assembly (HGA) includes a piezoelectric microactuator having a first side and an opposing second side. The first side includes a plurality of anchor regions that extend radially from a center point and are bonded to the gimbal tongue. The first side also includes a first plurality... Agent: Western Digital (fremont), LLC
20110149442 - Conductor suspension structure for hard disk drives: An integrated conductor/suspension structure for supporting and electrically connecting a write/read head in a hard disk drive and methods of making the conductor/suspension structure are provided. The integrated conductor/suspension structure may allow for an increased characteristic-impedance range, greater interference shielding and a reduction of signal loss that is contributed by... Agent:
20110149441 - Magnetic recording disk drive with write driver to write head transmission line having non-uniform sections for optimal write current pulse overshoot: An interconnect between the write driver and the write head in a magnetic recording disk drive enables an inherent write current overshoot. The interconnect includes an integrated lead suspension (ILS) and a short flex cable that connects the write driver circuitry to the ILS. The interconnect is a two-segment transmission... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110149443 - Tunable microstrip transmission path in a hard disk drive: A disk pack, comprising at least one hard disk, is rotatably mounted to a housing. The disk pack defines an axis of rotation and a radial direction relative to the axis. At least one actuator mounted to the housing is coupled with a suspension and is movable relative to the... Agent:06/16/2011 > patent applications in patent subcategories. invention type
20110141598 - Disk surface defect inspection method and apparatus: There is provided a detect inspection method and apparatus capable of performing a quick process of determining whether defects on a disk form an annular scratch defect or an island defect, by detecting an annular scratch defect in sum track areas with a deviation exceeding the standard deviation of an... Agent: Hitachi High-technologies Corporation
20110141597 - Tape library system and method of diagnosing tape cartridges: A tape library system includes a plurality of cartridge cells for accommodating a plurality of tape cartridges respectively, a tape drive for writing and reading data to and from the tape cartridge inserted therein, a diagnosis drive for diagnosing the tape cartridge inserted therein, an cartridge carriage mechanism for inserting... Agent: Fujitsu Limited
20110141600 - Disk device and offset control method thereof: According to one embodiment, a disk device comprises a memory, detector, calculation module, and deactivation module. The memory is configured to store an offset control amount at a time of manufacture. The detector is configured to detect a disk run-out. The calculation module is configured to obtain an offset control... Agent: Kabushiki Kaisha Toshiba
20110141599 - Disk drive and method of writing servo write tracks to a disk: A system and method of writing servo write tracks to a rotating disk using a head having a read/write offset is disclosed. One embodiment utilizes a write element on the head to write the servo write tracks. A read element on the head is then positioned over the servo write... Agent:
20110141601 - Proximity detection method for magnetic head and recording medium: Touchdown between a read/write head of disk drive and a recording medium is detected based on the variance in the frequency domain of position error signals (PES), each of which is measured after incrementally positioning the read/write head closer to the recording medium, from a baseline PES. The synchronous portion... Agent: Kabushiki Kaisha Toshiba
20110141602 - Systems and methods for storing data to magnetic tape having damaged areas: A method for using magnetic tape having damaged areas is disclosed. The method may include writing data to streaming magnetic tape, determining if the data write was successful, and responding to an unsuccessful data write by interrupting the data writing and advancing the magnetic tape forward a predetermined distance. Additionally,... Agent: Dell Products L.p.
20110141603 - Head/disk contact determination: A disk drive including a sensor element that senses contact between a head slider and a disk, a head integrated circuit (IC) comprising an amplification circuit section that amplifies a signal of the head slider, a controller IC comprising a controller that accesses a register of the head IC for... Agent:
20110141605 - Rate verification of an incoming serial alignment sequence: A technique for rate verification of an incoming serial alignment sequence includes receiving an incoming serial stream. A determination is then made as to whether an align sequence is recognized in the incoming serial stream. When an align sequence is recognized, a check is made to determine if an appropriate... Agent:
20110141606 - Tunneling junction magnetoresistive effect element and manufacturing method thereof: According to one embodiment, a TMR effect element includes a ground layer, an antiferromagnetic layer above the ground layer, a first ferromagnetic layer above the antiferromagnetic layer and exchange-coupled to the antiferromagnetic layer, an anti-parallel coupling layer above the first ferromagnetic layer, a second ferromagnetic layer having a magnetic moment... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110141608 - Magnetic disk centering method and system: A system and method are described for aligning a data axis of one or more circular data-bearing tracks on an annular surface region of a magnetic media-bearing disk, with a spin axis of a spindle of a spinstand or a disk drive. The data axis is perpendicular to the surface... Agent: Guzik Technical Enterprises
20110141614 - Magnetic head drive device: A magnetic head drive device including a suspension for supporting a magnetic head, and a main actuator that produces rotary movement of the magnetic head by applying current to a coil. The main actuator includes end arms each comprising a single micro-actuator, and an intermediate arm comprising two micro-actuators. The... Agent:
20110141615 - Magnetic head for perpendicular recording: According to one embodiment, a magnetic head for perpendicular recording includes a main pole, a first soft magnetic film disposed on a trailing side of the main pole, and a first nonmagnetic film interposed between the main pole and the first soft magnetic film. A thickness of the main pole... Agent: Hitachi Global Storage Technologies Netherlands B. V.
20110141616 - Magnetic recording head and magnetic disk storage device: In one embodiment, a magnetic recording head includes a main magnetic pole adapted for generating a magnetic field for recording information on a magnetic disk, a magnetic shield member adapted for suppressing spreading of a magnetic field output from the main magnetic pole through a non-magnetic insulation member, a side... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110141611 - Method and apparatus for measuring disk runout in a disk drive: According to one embodiment, a disk drive includes an actuator, a servo controller, and a calculation module. The actuator is configured to move the head over a disk, in the radial direction of the disk. The servo controller is configured to make the head move along a target orbit on... Agent: Kabushiki Kaisha Toshiba
20110141612 - Method of unloading transducer in data storage device and disk drive and storage medium using the method: Provided are a method and apparatus for performing optimum transducer unloading in a data storage device according to circumstances. The method of unloading a transducer in a data storage device comprises: determining whether a condition that requires an unloading operation is detected while the transducer is positioned on a data... Agent: Samsung Electronics Co., Ltd
20110141609 - Onset layer for perpendicular magnetic recording media: A magnetic storage medium according to one embodiment includes a substrate; an onset layer formed above the substrate, the onset layer comprising ruthenium and titanium oxide; and a magnetic oxide layer formed directly on the onset layer. A method according to one embodiment includes sputtering using a target of ruthenium... Agent:
20110141613 - Tunneling magnetoresistance read head having a cofe interface layer and methods for producing the same: According to one embodiment, a method for producing a Tunneling Magnetoresistance (TMR) read head includes forming a fixed layer, forming an insulating barrier layer above the fixed layer, forming a free layer above the insulating barrier layer, and annealing the free layer, the fixed layer, and the insulating barrier layer.... Agent: Hitachi Global Storage Technologies Netherlands B. V.
20110141607 - Write quality of hdd heads experiencing temporary fly-height problems: Approaches for improving the write quality of a hard-disk drive (HDD) head experiencing temporary fly-height problem. When the hard-disk drive is idle and heads are parked on the ramp, fluid, such as a lubricant or the condensation of vapor, may collect between the surface of a platter and the head... Agent:
20110141610 - Write synchronization in patterned magnetic media: Systems and methods for synchronizing write signals are disclosed. In one embodiment, a compensation system is implemented within a disk drive that receives a synchronization signal read from a patterned magnetic disk by a read head. The compensation system processes the synchronization signal to compensate for noise sensed by the... Agent:
20110141617 - Method and apparatus for measuring disk runout in a disk drive: According to one embodiment, a disk drive includes an actuator, a servo controller, a calculation module and an adjustment module. The actuator is configured to move the head over a disk, in the radial direction of the disk. The servo controller is configured to make the head move along a... Agent: Kabushiki Kaisha Toshiba
20110141618 - Use of carbon nanotubes to form conductive gaskets deployed in sensitive environments: Approaches for implementing a conductive gasket comprising carbon nanotubes for deployment within a sensitive environment, such as an environment containing equipment whose operation may be affected by airborne particles or electromagnetic energy. For example, a hard-disk drive (HDD) comprises an enclosure that is formed by coupling a first component, such... Agent:
20110141619 - Upstream spoiler with integrated crash stop: Approaches for a single part that comprises an upstream spoiler and a crash stop for use within a hard-disk drive (HDD). The integrated upstream spoiler and crash stop has one or more wings which diverts and reduces the flow of air, resulting from the rotation of the magnetic-recording disks within... Agent:
20110141621 - Perpendicular magnetic recording media with oxide-containing exchange coupling layer: A magnetic storage medium according to one embodiment includes a substrate; a first oxide magnetic layer formed above the substrate; a second oxide magnetic layer formed above the first oxide magnetic layer; an exchange coupling layer formed above the second oxide magnetic layer, the exchange coupling layer comprising an oxide;... Agent:
20110141620 - Shallow trench discrete track media (dtm) and pattern transfer process: A shallow trench discrete track media structure is fabricated by etching a magnetic recording layer to provide a plurality of discrete magnetic data tracks separated by shallow trenches. Each shallow trench has a trench floor formed at a depth in the magnetic recording layer that is less than the thickness... Agent: Seagate Technology LLC
20110141622 - Head slider with a pocket for suppressing variability in levitation: A head slider with a pocket. An air bearing surface. A central levitating surface. A magnetic recording head provided in proximity to a trailing edge side of the central levitating surface. A deep recessed surface provided on both sides of the head slider in a width direction of the head... Agent:
20110141623 - Magnetic head slider: A magnetic head slider including a first face adjacent to a recording medium, a shallow groove face formed at a first depth from the levitating face, a deep groove face formed at a second depth from said first face, where the second depth is greater than the first depth. The... Agent:
20110141624 - Head suspension and method of manufacturing head suspension: A head suspension has a base, a piezoelectric element, a load beam, and a wiring member to supply electric power to the piezoelectric element so that the piezoelectric element deforms to move the load beam relative to the base. The wiring member has a conductive base layer, an insulating layer,... Agent: Nhk Spring Co., Ltd.
20110141625 - Head suspension: A head suspension has a base plate including a flange. The flange has a first face attached to the carriage arm and a second face attached to an auxiliary member. A first-face contact is circumferentially formed along an outer circumferential edge of the first face of the flange, so that... Agent: Nhk Spring Co., Ltd.
20110141626 - Magnetic recording disk drive with integrated lead suspension having multiple segments for optimal characteristic impedance: An integrated lead suspension (ILS) in a magnetic recording disk drive has the transmission line portion of the ILS between the flex cable and the gimbal formed of multiple interconnected segments, each with its own characteristic impedance. At the interface between any two segments there is a change in the... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110141627 - Magnetic disk device and guide member for guiding a flexible wiring board: A disk drive comprising a guide member configured to guide a strip-shaped flexible wiring board, wherein the strip-shaped flexible wiring board has one end attached to a side portion of a carriage that is rotatably supported, in such a way that another end thereof is oriented toward a mounting position.... Agent:
20110141628 - Laminated monolithic polymer film desiccants for magnetic storage devices: A desiccant device that emits no contamination and is therefore suitable for use in an electronic device such as a magnetic disk drive system. The desiccant device includes a pouch formed of a laminate layer. The laminate layer includes a thin, non-permeable monolithic membrane laminated to a porous media. The... Agent:
20110141629 - Spin torque oscillator sensor employing antiparallel coupled oscilation layers: A spin torque magnetoresistive sensor having a very small gap thickness. The sensor operates by measuring the change in frequency of a spin torque induced magnetic oscillation in magnetic layers of the sensor to detect the presence of a magnetic field. The sensor includes a pair of free magnetic layers... Agent:06/09/2011 > patent applications in patent subcategories. invention type
20110134556 - Detection and acquisition of a servo pattern subject to lateral motion: A method, a servo system and a tape drive are provided to acquire lock on a servo signal. The servo signals of at least one servo element are monitored to detect a valid servo signal. If a valid servo signal is not detected than the fine actuator is moved in... Agent: International Business Machines Corporation
20110134558 - Disk device, head distance calculation method, and offset control method: According to one embodiment, a disk device comprises a magnetic head module, a measurement module, and an arithmetic operation module. The magnetic head module includes a read head and a write head wherein an offset is present therebetween. The measurement module writes a measurement signal into a disk medium, reads... Agent: Kabushiki Kaisha Toshiba
20110134559 - Methods for producing and/or testing magnetic heads using classifications: In one embodiment, a manufacturing method for magnetic heads includes classifying magnetic heads into one of a first tested head class, and a non-test-candidate head class, determining characteristic values of the magnetic heads classified in the first tested head class, estimating characteristic values of the magnetic heads classified in the... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110134557 - Real time monitoring inconsistent operations in a hard disk drive: Real time monitoring inconsistent operations in a hard disk drive, wherein the hard disk drive comprises a magnetic disk, a controller and a channel clock. A timing signal from the channel clock is measured in real time in the controller. Time intervals between sector identifier marks of the magnetic disk... Agent:
20110134560 - Writing and reading multi-level patterned magnetic recording media: A method and system for reading readback waveforms representing written magnetization states of a pair of magnetic islands of a two-level patterned magnetic recording medium, and a structure that include a multi-level patterned magnetic medium. Reading the readback waveform representing the written magnetization state includes: identifying the written magnetization state... Agent: International Business Machines Corporation
20110134561 - Perpendicular magnetic recording write head and system with improved spin torque oscillator for microwave-assisted magnetic recording: A microwave-assisted magnetic recording (MAMR) write head and system has a spin-torque oscillator (STO) located between the write pole of the write head and a trailing shield that alters the write field from the write pole. The STO is a stack of layers whose planes lie generally parallel to the... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110134562 - Operating a reel-to-reel system: A method for operating a reel-to-reel system of a storage device with a first reel, a second reel, a first motor and a second motor, the first motor drives the first reel and the second motor drives the second reel. The system transports a tape supplied by one of the... Agent: International Business Machines Corporation
20110134564 - Magnetic heads having a graded domain control film and methods of manufacture thereof: A magnetic head, according to one embodiment, includes a sensor film, a sensor cap film provided above the sensor film, a pair of shields including an upper magnetic shield and a lower magnetic shield which serve as electrodes that pass current in a film thickness direction of the sensor film,... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110134563 - Magnetoresistive effect head having a multilayered pinned layer or free layer and systems thereof: According to one embodiment, a magnetoresistive effect head includes a magnetically pinned layer having a direction of magnetization that is pinned, a free magnetic layer positioned above the magnetically pinned layer, the free magnetic layer having a direction of magnetization that is free to vary, and a barrier layer comprising... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110134565 - Magnetic recording disk and disk drive with track identification using phase-type servo patterns: A magnetic recording disk drive has a disk with a head positioning servo pattern of multiple circumferentially-spaced chevron patterns of discrete patterned servo islands. The disk drive has servo electronics that decodes the chevron patterns to determine the absolute radial position of the head without the need for separate track... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110134566 - Spindle motor and disk drive apparatus: A stationary portion of a spindle motor includes a base member and a magnetic member. The magnetic member is arranged below a magnet and fixed to the base member. The magnetic member includes an annular plate portion arranged on an upper surface of the base member, and a projecting portion... Agent: Nidec Corporation
20110134567 - Perpendicular magnetic write head with wrap-around shield, slanted pole and slanted pole bump fabricated by damascene process: A magnetic write head having a write pole with a tapered trailing edge. The write head has a non-magnetic step layer and a non-magnetic bump formed on the front edge of the magnetic step layer. A non-magnetic trailing gap layer is formed over the tapered trailing edge of the write... Agent:
20110134568 - Pmr writer and method of fabrication: Methods for fabrication of tapered magnetic poles with a non-magnetic front bump layer. A magnetic pole may have a tapered surface at or near an air bearing surface (ABS), wherein a thickness of the write pole increases in a direction away from the ABS. A non-magnetic front bump layer may... Agent:
20110134569 - Pmr writer and method of fabrication: Methods for fabrication of tapered magnetic poles with a non-magnetic front bump layer. A magnetic pole may have a plurality of tapered surfaces at or near and air bearing surface (ABS), wherein a thickness of the write pole increases in a direction away from the ABS. A non-magnetic front bump... Agent:
20110134570 - Thin film magnetic head having heating element: A thin film magnetic head is provided, in which the amount of protrusion in the periphery of an element portion can be reduced or a local temperature increase of electrode leads of a heating element can be prevented. The thin film magnetic head includes a playback element disposed between lower... Agent: Tdk Corporation
20110134571 - Capacitive coupling in a hard disk drive: A hard disk drive including a base plate and a drive cover. The hard disk drive also includes a capacitive coupling feature disposed between the base plate and the drive cover. The capacitive coupling feature is configured to provide grounding between the base plate and the drive cover.... Agent:
20110134572 - Double biasing for trilayer mr sensors: A trilayer magnetoresistive sensor includes first and second ferromagnetic layers separated by a nonmagnetic layer. A high coercivity permanent magnet bias element biases the first ferromagnetic layer in a first direction. A high moment permanent magnet bias element biases the second ferromagnetic layer in a second direction substantially orthogonal to... Agent: Seagate Technology LLC06/02/2011 > patent applications in patent subcategories. invention type
20110128644 - Reducing recession by heating a magnetic tape head: A magnetic tape head including a transducer disposed between a substrate, a recession between the transducer and the substrate, where the recession is formed at least by wear from a magnetic tape. The magnetic tape head also includes a heater disposed in the transducer. The heater thermally expands the transducer... Agent:
20110128645 - Apparatus and method for writing data to tape medium: In a controller of a tape drive, a command processing unit receives a request to write new data, an offset determination unit determines whether old data is not partially overwritten with new data, and if old data is not partially overwritten with new data, a head position management unit makes... Agent: International Business Machines Corporation
20110128649 - Magnetic recording medium having non-magnetic separating regions and methods of manufacturing the same: In one embodiment, a magnetic recording medium includes a patterned magnetic recording layer above a substrate, the patterned magnetic recording layer including recording regions and separating regions for separating the recording regions and a non-magnetic alloy layer positioned in the separating regions, wherein the non-magnetic alloy layer includes Ti. In... Agent: Hitachi Global Storage Technologies Netherlands B.v.
20110128648 - Method and apparatus for controlling head with spin-torque oscillator in a disk drive: According to one embodiment, an apparatus for controlling a head includes a transmitting module and a controller. The transmitting module is configured to transmit a write signal to a magnetic head having a spin torque oscillator at the time of recording data. The controller is configured to supply a drive... Agent: Kabushiki Kaisha Toshiba
20110128647 - Method of disk alignment using printed alignment marks: Processes include aligning a disc with a template at a location so that the pattern from the template is transferred to the disc in a relative orientation. The relative orientation provides that when the disc with the transferred pattern is finally assembled into a hard disc drive, an inner diameter... Agent: Seagate Technology LLC
20110128646 - Synchronized rewriting of data: A hard disk drive (HDD) including a magnetic disk, the magnetic disk including a data track. The HDD also includes a synchronized rewrite controller for synchronizing a plurality of rewrites of a data pattern on a location of the track of the magnetic disk and the HDD includes a write... Agent:
20110128650 - Isolating unstable air pressure in a hard disk drive (hdd): A hard disk drive (HDD) includes a base plate where the base plate includes a disk housing, at least one disk located within a disk shroud in the base plate, a drive cover configured to cover the at least one said disk within said base plate and a reservoir between... Agent:
20110128651 - Electrically conductive spacer and disk drive including the electrically conductive spacer: A disk drive. The disk drive includes a motor, a hub coupled to a spindle shaft of the motor, at least two disks each having a center hole and being coupled to the hub, and a spacer having a center hole. The spacer is disposed around the hub such that... Agent:
20110128652 - Magnetic head and disk drive with the same: According to one embodiment, a magnetic head includes a main pole configured to produce a recording magnetic field, a return pole opposed to a trailing side of the main pole across a write gap and configured to return magnetic flux from the main pole, a coil configured to excite the... Agent: Kabushiki Kaisha Toshiba
20110128653 - Reducing gram load change in actuator arm in a hard disk drive: Swaging a suspension base plate to an actuator arm for a hard disk drive. A portion of material adjacent to a hole in the actuator arm is removed to create an opening to receive material. A flange of the suspension base plate is inserted into the hole in the actuator... Agent:Previous industry: Optical: systems and elements
Next industry: Electricity: electrical systems and devices
RSS FEED for 20150611:
Integrate FreshPatents.com into your RSS reader/aggregator or website to track weekly updates.
For more info, read this article.
Thank you for viewing Dynamic magnetic information storage or retrieval patents on the FreshPatents.com website. These are patent applications which have been filed in the United States. There are a variety ways to browse Dynamic magnetic information storage or retrieval patent applications on our website including browsing by date, agent, inventor, and industry. If you are interested in receiving occasional emails regarding Dynamic magnetic information storage or retrieval patents we recommend signing up for free keyword monitoring by email.
Advertise on FreshPatents.com - Rates & Info
FreshPatents.com Support - Terms & Conditions
Results in 0.14874 seconds