Dynamic magnetic information storage or retrieval inventions 10/09

20090244748 - Magnetic transfer master carrier and magnetic transfer method: A magnetic transfer master carrier of the present invention includes a base material having convex portions on its surface, the convex portions being provided corresponding to a pattern of information to be recorded on a perpendicular magnetic recording medium, and a magnetic layer deposited at least on top surfaces of... Agent: Young & Thompson

20090244747 - Magnetic transfer master carrier and method for producing the same: To provide a magnetic transfer master carrier obtained by forming a perpendicular magnetic anisotropy magnetic layer over a surface of an original master which has a concavo-convex pattern, placing a base material against the formed perpendicular magnetic anisotropy magnetic layer, and separating the base material.... Agent: Young & Thompson

20090244746 - Magnetic transfer method and magnetic recording medium: A magnetic transfer method including initially magnetizing a disc-shaped perpendicular magnetic recording medium by applying, to the recording medium in a circumference direction, a magnetic field whose direction is inclined at an angle within a range of ±50° with respect to a perpendicular line (0°) to the medium surface, closely... Agent: Young & Thompson

20090244749 - Production method of magnetic transfer master carrier, magnetic transfer master carrier, magnetic transfer method, and magnetic recording medium: A production method of a magnetic transfer master carrier, the method including forming an imprint resist layer on a surface of a magnetic layer of a laminate which includes a first base material and the magnetic layer laminated thereon; forming a resist pattern, following shapes of concave portions of a... Agent: Young & Thompson

20090244750 - Magnetic-recording-medium testing apparatus, magnetic-recording-medium testing method, and magnetic recording apparatus: A magnetic-recording-medium testing apparatus includes a frequency-characteristic analyzing unit that analyzes a frequency characteristic of a reproduced signal in an area of a magnetic material where a continuous frequency signal is written, in a magnetic recording medium that records a signal according to a magnetization direction of the magnetic material,... Agent: Greer, Burns & Crain

20090244756 - Data storage apparatus: A data storage apparatus includes: a medium for storing data having synchronization marks and data blocks, the synchronization mark and the data block being allocated alternately in the circumference direction of the medium; a head writing data into or reading out data from the medium; and a processor for executing... Agent: Staas & Halsey LLP

20090244754 - Data storage device and write processing method for data storage device: In a data storage device, a head writes data so as to protect data from off track writing to adjust tracks. A control unit acquires large ring buffer during sequential writing and performs a retry to return adjacent tracks, according to data of a return sector area of the ring... Agent: Greer, Burns & Crain

20090244752 - Head spacing verification in magnetic disk drive systems during end-user operation: Magnetic disk drive systems and associated methods are described for verifying a spacing between read/write heads on a slider and a magnetic recording disk during end-user operation. An operating power applied to heating elements in the slider controls the spacing due to thermal protrusion. While in end-user operation, the operating... Agent: Duft Bornsen & Fishman, LLP

20090244755 - Method for measuring write width and/or read width of a composite magnetic head and a measuring device using the method: A method for measuring a write width and/or a read width of a composite magnetic head in which a read characteristics profile having a peak as a read voltage characteristics for a moving distance is obtained by writing a test data in a designated track of eccentric tracks of such... Agent: Mattingly & Malur, P.C.

20090244753 - Monitoring element for a magnetic recording head and method of manufacturing a magnetic recording head: A monitoring element for a magnetic recording head makes it possible to know the form of a magnetic pole of the magnetic recording head without destroying the element. The monitoring element for a magnetic recording head is formed on a workpiece for magnetic recording heads on which element magnetic poles... Agent: Greer, Burns & Crain

20090244751 - Track error measurement and recovery: A method of measuring a track value is shown. The track value is related to track mis-registration, and is compared to a track value limit to assess a condition of the track. In example embodiments, the track value is determined as a function of multiple position error signals from previous... Agent: Schwegman, Lundberg & Woessner/toshiba

20090244757 - Methods and apparatus for low power hard disk drive servo writers: Methods and apparatus to for low power hard disk drive servo writers. A disclosed servo writer comprises a distribution circuit to receive one or more pulses from a pulse generator, the distribution circuit having a biasing circuit have one of a first write mode or a second write mode based... Agent: Texas Instruments Incorporated

20090244758 - Hard disk drive preamplifier timers and methods to calibrate hard disk drive preamplifier timers: Hard disk drive preamplifier timers and methods to calibrate hard disk drive preamplifier timers are disclosed. A timer is in a hard disk drive preamplifier comprises a first switch to selectively store charge in a storage device based on an input signal, the storage device receiving a first current and... Agent: Texas Instruments Incorporated

20090244759 - Correction information recording method, correction information recording circuit and information storage device: A method and device of recording RRO correction information including recording first RRO correction information on a first track in one of servo frames of a recording medium and recording second RRO correction information on a second track different from the first recording track at a position different from a... Agent: Staas & Halsey LLP

20090244760 - Magnetic storage control apparatus, magnetic storage control method, and magnetic storage apparatus: A magnetic storage control apparatus for controlling a magnetic storage apparatus that uses a recording medium having a plurality of reference signals on its track and having a data area between the reference signals. The apparatus includes: a measurement section that reproduces the reference signal in a predetermined track of... Agent: Greer, Burns & Crain

20090244761 - Memory device: A method of controlling a memory device connectable to an information apparatus for sending out a command to the memory device, the memory device having a medium for storing data and a head for writing data into and reading data from the medium, the method includes storing parameter information for... Agent: Greer, Burns & Crain

20090244762 - Resist pattern forming method, mold structure producing method, magnetic recording medium producing method, magnetic transfer method and magnetic recording medium: To provide a resist pattern forming method including: cleaning off fine powder at least on an edge of a base material to be processed; forming an imprint resist layer on a surface of the base material whose edge has been cleared of the fine powder; and forming a resist pattern... Agent: Young & Thompson

20090244764 - Balance correction apparatus and balance correction method: A balance correction apparatus is configured to correct weight imbalance around an axis of a spindle motor, and includes a piezoelectric actuator configured to apply an impact to a housing, a controller configured to generate as a rectangular wave a force profile that represents an acceleration applied to the housing... Agent: Greer, Burns & Crain

20090244763 - Electronic information storage apparatus, information processing apparatus, image forming apparatus, and computer readable medium: An electronic information storage apparatus includes: a storage that stores electronic information; a check unit that reads out the electronic information stored in the storage to check whether the electronic information is written normally or not; and a controller that, in a case where the electronic information is stored in... Agent: Sughrue-265550

20090244766 - Information access device: A difference value between a gain control value when a head comes into contact with a recording medium and a gain control value when the head floats with respect to the recording medium by a target floating amount is stored in advance. When the information access device is actually operated,... Agent: Greer, Burns & Crain

20090244765 - Patterned media magnetic recording disk drive with write clock phase adjustment for data pattern circumferential misalignment: A patterned-media magnetic recording disk drive compensates for circumferential misalignment of data island patterns among the data tracks as a result of errors in fabrication of the master template used to make the disks. Each data track on the disk has its pattern shifted from a generally radial or arcuate... Agent: Thomas R. Berthold

20090244767 - Controller for a positioning device, method for controlling a positioning device, positioning device, and lithographic apparatus provided with a positioning device: A controller for a positioning device is constructed and arranged to receive a position signal indicative of a position of the positioning device, compare the position signal to a set-point signal indicative of a desired position of the positioning device to obtain an error signal, selectively modify the error signal... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20090244768 - Magnetic head positioning control method and magnetic head positioning control apparatus: N groups of servo patterns, each corresponding to the predetermined number of servo sectors, are recorded in a magnetic disk. The magnetic head positioning control apparatus of the present invention produces an RRO current correction table corresponding to each group of servo patters and selects the group of servo patterns... Agent: Greer, Burns & Crain

20090244769 - Scheme to protect media and head against corrosion/oxidation in a hard disk drive: Oxygen scavenger for use in a hard disk drive. The oxygen scavenger removes oxygen from an interior of a hard disk drive to prevent corrosion of corrodible materials in magnetic media or magnetic heads. The oxygen scavenger is incorporated into a film so that it uses a limited physical space... Agent: Hitachi Global Storage Technologies, Inc.

20090244772 - Magnetic head substrate, magnetic head and recording medium driving device: The present invention relates to a magnetic head substrate comprising a sintered body containing 35% by mass to 60% by mass of alumina and 40% by mass to 65% by mass of a conductive compound. The conductive compound contains at least one selected from carbide, nitride and carbonitride of tungsten.... Agent: Hogan & Hartson L.L.P.

20090244771 - Magnetic recording medium and magnetic recording device: A disclosed magnetic recording medium includes a substrate; a soft magnetic backing layer disposed on the substrate; an intermediate layer disposed on the soft magnetic backing layer; a first recording layer disposed on the intermediate layer and having perpendicular magnetic anisotropy; an exchange-coupling-energy control layer disposed on the first recording... Agent: Greer, Burns & Crain

20090244770 - Manufacturing method of magnetic recording medium, the magnetic recording medium, and magnetic recording apparatus: Aspects of the present embodiments are related to manufacturing methods of magnetic recording media. The manufacturing method of a magnetic recording medium includes a step of stacking a soft magnetic backing layer, an intermediate layer, a first recording layer having a perpendicular magnetic anisotropy, an exchange coupling force control layer... Agent: Greer, Burns & Crain

20090244773 - Method for counteracting longitudinal oscillations of magnetic tape in a tape drive system: A method for counteracting longitudinal oscillations in a magnetic tape as it passes over a head in a tape drive system includes the steps of passing the magnetic tape over the head, detecting the occurrence of longitudinal oscillations in the magnetic tape, and generating counteractive longitudinal oscillations in the magnetic... Agent: Brooks Kushman P.C. / Sun / Stk

20090244774 - Magnetic recording medium and process of producing the same: A magnetic recording medium includes a support and a magnetic layer containing a ferromagnetic powder and a binder, and has a cut surface along an edge of the magnetic recording medium, wherein the cut surface of the magnetic recording medium has a shear region whose length in a thickness direction... Agent: Sughrue-265550

20090244775 - Adjacent-track-erasure (ate) refresh with increased track resolution for often-written areas: Methods and systems are shown that specify using group counters and track counters to reduce the need for adjacent-track-erasure (ATE) refresh. A group threshold may be used to monitor the number of write operations to a group. The group threshold may be used to determine when it is necessary to... Agent: Schwegman, Lundberg & Woessner/toshiba

20090244776 - Magnetic transfer master carrier and magnetic recording medium: To provide a magnetic transfer master carrier including a base material, a concavo-convex pattern formed by arranging a plurality of convex portions on a surface of the base material, and a magnetic layer provided at least on upper surfaces of the convex portions, wherein the magnetic layer is formed by... Agent: Young & Thompson

20090244778 - Head suspension assembly and carriage assembly: A head suspension assembly comprising: a head suspension; a head slider having the medium-opposed surface opposed to a storage medium, the head slider having the supported surface received on the head suspension, the supported surface being defined at the farside of the medium-opposed surface; an electromagnetic transducer embedded in the... Agent: Greer, Burns & Crain

20090244777 - Manufacturing method of magnetic recording medium: A disclosed method for manufacturing a magnetic recording medium includes a first step of forming a magnetic recording film on a non-magnetic substrate and a second step of forming, in the magnetic recording film, a magnetic recording region which is magnetically recordable and an isolation region which is magnetically non-recordable... Agent: Greer, Burns & Crain

20090244780 - Magnetic recording medium and recording/reproducing apparatus therefor: A magnetic recording medium on which a plurality of concentric recording tracks is formed, the recording tracks including a plurality of closed shaped magnetic parts formed to be symmetrical with respect to two orthogonal axes in shape, the magnetic recording medium being rotated by a recording and reproducing apparatus provided... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090244779 - Storage apparatus: A storage apparatus includes a magnetic storage medium which is formed with a data portion based on isolated magnetic dots and a servo pattern portion, a drive mechanism which drives the storage medium, a head actuator which includes a head for reading and writing data from and to the storage... Agent: Staas & Halsey LLP

20090244781 - Magnetic head slider and magnetic disk drive: A magnetic head slider includes a magnetic head element for reading or writing data from or into a magnetic recording medium. The magnetic head slider flies over the magnetic recording medium by an air flow generated by rotation of the magnetic recording medium. The magnetic head slider includes a slider... Agent: Greer, Burns & Crain

20090244782 - Disk drive: A disk drive has: a disc-shape information recording medium; a swing arm having a base and a pair of arm sections extended along the surface and backside of the information recording medium; and two opposed connecting boards attached to the arm sections and each having an arm-side conductor pattern. The... Agent: Greer, Burns & Crain

20090244783 - Manufacturing method of magnetic recording medium, the magnetic recording medium, and magnetic recording and reproducing apparatus: A manufacturing method of a magnetic recording medium, the magnetic recording medium having a structure where plural magnetic recording areas and isolation areas in a magnetic recording layer are formed on a non-magnetic substrate, the isolation areas being configured to magnetically isolate the magnetic recording areas, the manufacturing method includes... Agent: Greer, Burns & Crain

20090244784 - Storage apparatus: A storage apparatus includes a magnetic circuit applying driving force to a carriage. The magnetic circuit includes a first yoke provided with a magnet. An end of the first yoke is secured using a first fastening member screwed in a threaded hole in an end of the base. A second... Agent: Greer, Burns & Crain

20090244785 - Magnetic recording medium, magnetic recording/reproduction device, and method of manufacturing magnetic recording medium: A magnetic recording medium suppresses effectively side erasure even when recording dot intervals are reduced. Magnetic dots and a soft magnetic layer are provided on a soft magnetic underlayer with a nonmagnetic layer intervening, so that magnetic dots are separated by the soft magnetic layer, and consequently leakage flux during... Agent: Greer, Burns & Crain

20090244786 - System, method and apparatus for flexure-integrated microactuator: A piezo in-tongue microactuator includes a suspension assembly with a flexure tongue. The tongue has two slots that accept piezo actuators. The tongue also has multiple hinge flexible elements that translate the extension and/or contraction of the piezo actuators into rotary motion of the recording head. This rotary motion is... Agent: Larson Newman Abel & Polansky LLP

20090244787 - Perpendicular head with wide track writing capability and methods of media testing: A system according to one embodiment comprises a head having a perpendicular writer, the writer comprising: a first pole structure having a pole tip positioned towards an air bearing surface of the head, the first pole structure having a portion that is recessed from an extent of the pole tip... Agent: Zilka-kotab, PC- Hit

20090244788 - Magneto resistive effect element with a magnetic film generating spin fluctuation of conduction electrons: The present invention is to be capable of suppressing magnetic white noises as far as possible. A resonant magneto-resistance effect element includes a first magnetic layer whose magnetization direction is substantially parallel to a film plane, a second magnetic film whose magnetization direction is substantially perpendicular to the film plane,... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090244790 - Magnetoresistive element and layered object: An magnetoresistive element includes: an underlayer made of a nitride; a pinning layer made of an antiferromagnetic layer overlaid on the underlayer, the pinning layer having the close-packed surface in the (111) surface of crystal, the pinning layer setting the (002) surface of crystal in parallel with the surface of... Agent: Greer, Burns & Crain

20090244789 - Method and system for providing a hard bias capping layer: The method and system for providing a magnetoresistive device are disclosed. The magnetoresistive device is formed from a plurality of magnetoresistive layer. The method and system include providing a mask. The mask covers a first portion of the magnetoresistive element layers in at least one device area. The magnetoresistive element(s)... Agent: Western Digital Technologies, Inc. Attn: Lesley Ning

20090244792 - Magnetoresistance effect element and magnetic random access memory: A magnetoresistance effect element includes: a first ferromagnetic layer having invariable magnetization perpendicular to a film plane; a second ferromagnetic layer having variable magnetization perpendicular to the film plane; a first nonmagnetic layer interposed between the first ferromagnetic layer and the second ferromagnetic layer; a third ferromagnetic layer provided on... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090244791 - Current-perpendicular-to-plane (cpp) read sensor with multiple ferromagnetic sense layers: The invention provides a current-perpendicular-to-plane (CPP) tunneling magnetoresistance (TMR) or giant magnetoresistance (GMR) read sensor with multiple ferromagnetic sense layers. In one embodiment of the invention, a CPP TMR read sensor comprises a first sense layer formed by a ferromagnetic polycrystalline Co—Fe film, a second sense layer formed by a... Agent: Zilka-kotab, PC- Hit

20090244793 - Magnetic transfer method and master manufacturing method: A magnetic transfer method includes arranging a magnetic transfer master so as to cause a surface of the magnetic transfer master to be in proximity to or in contact with a vertical magnetic recording medium. The magnetic transfer master has on the surface thereof a concave-convex pattern representing information. A... Agent: Greer, Burns & Crain