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Dynamic magnetic information storage or retrieval April category listing, related patent applications 04/09

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.
  
04/30/2009 > patent applications in patent subcategories. category listing, related patent applications

20090109563 - Burst interval measuring apparatus, burst interval measuring method, drive apparatus, servo pattern writing apparatus, and magnetic tape testing apparatus: A burst interval measuring apparatus includes: a detector that outputs detection signals that can to measure a burst interval of servo patterns for a tracking servo; and a measuring unit that measures the burst interval based on the detection signals. The detector is constructed so as to be capable of... Agent: Greenblum & Bernstein, P.L.C

20090109564 - Low-power read channel for magnetic mass storage systems: An improved mass storage system having a read channel adapted to store in a FIFO memory digitized analog samples of data symbols read from a disk, the buffered digitized samples being processed by digital circuitry that may be operated at a slower speed than the maximum symbol rate from the... Agent: Ip Legal Services

20090109565 - Tape library with load count confirmation: A data storage library is described including a tape cartridge possessing an auxiliary memory device adapted to maintain a load count that is incremented whenever the tape cartridge is loaded in a tape drive. The library also includes, a library tape drive adapted to increment the load count every time... Agent: Hiscock & Barclay, LLP

20090109566 - Magnetic tape: A magnetic tape of the present invention includes a plurality of data bands in which a data signal can be recorded and servo pattern portions composed of a burst signal. The servo pattern portions are formed at a predetermined interval in a longitudinal direction of the magnetic tape in a... Agent: Birch Stewart Kolasch & Birch

20090109567 - Seek control apparatus and method for generating control data for seek control: There is provided a method for generating acceleration data used in feed-forward control of head seeking, wherein, a seek distance and one of a seek period and the count of samples are received; a weighting factor for the change rate of acceleration between adjacent sample times is determined respectively; and... Agent: Amin, Turocy & Calvin, LLP

20090109568 - Thermal elements for controlling and manipulating thermal pitch static attitude (psa): The sensitivity of the fly height of a HDD (hard disk drive) recording head to temperature variations can be greatly reduced, eliminated or controlled in a manner to enhance HDD performance under various temperature conditions by affixing a thermal element to the HGA (head gimbals assembly) flexure. The thermal element... Agent: Saile Ackerman LLC

20090109569 - Apparatus, system, and method for guided growth of patterned media using monodisperse nanospheres: An apparatus, system, and method are disclosed for guided growth of patterned media using monodisperse nanospheres. The apparatus includes nanoscale features extending from a substrate. The nanoscale features may be formed using electron-beam lithography and have a non-uniform cap. A spherical cap is formed on the non-uniform cap by hydrolysis... Agent: Kunzler & Mckenzie

20090109570 - Wire and wire lead designs for a wire-assisted magnetic write device: A magnetic device includes a write element having a write element tip that defines a medium confronting surface. The write element is operable to generate a first field at the medium confronting surface. A conductor is proximate the write element tip and first and second conductive leads are connected to... Agent: Kinney & Lange, P.A.

20090109571 - Tape cartridge auxiliary memory containing tape drive functional status information: A data storage library is described including a plurality of tape cartridges each possessing an auxiliary radio frequency memory device. The library also includes, at least one tape drive capable of determining at least one functional status when loaded with one of the tape cartridges wherein the at least one... Agent: Hiscock & Barclay, LLP

20090109572 - Head slider, head gimbal assembly and storage apparatus: A head slider includes a leading end and a trailing end, a main top face and two step faces. The main top face faces a recording medium and forms a part of the leading end. The two step faces extend from the leading end to a downstream side at a... Agent: Greer, Burns & Crain

20090109573 - Disk drive and head slider: Embodiments of the present invention provide a head slider that suppresses accumulation of lubricant droplets on an air-bearing surface due to a backflow, and thus improves reliability of a disk drive. According to one embodiment, a lubricant droplet being adhered to a head slider and accumulated thereon, which are caused... Agent: Townsend And Townsend And Crew LLP

20090109574 - High acceleration seek optimized slider: A slider includes a slider body having an outer side edge, an inner side edge, an outside rail and an inside rail. The outside rail has an inner edge and an outer edge and is positioned adjacent to the outer side edge of the slider body. The inside rail has... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20090109575 - Magnetic latch assembly: A magnetic latch assembly 10 which is selectively deployed on a cabinet door or drawer 102 and which normally causes a latching portion 40, which includes a permanent magnet 32, to be in a latching or locked position. A magnetic key 200 provided in the vicinity of the magnet 32... Agent: John G. Chupa Law Offices Of John Chupa And Associates, P.C.

20090109576 - Head support device and disk device with the same: A head supporting arm coupled at one end with a head slider is supported so as it can revolve in parallel to the surface of a recording medium around a shaft for horizontal revolution, at the same time can revolve perpendicularly to the surface of recording medium around an axis... Agent: Wenderoth, Lind & Ponack L.L.P.

20090109577 - Magneto-resistive effect device of the cpp structure and magnetic disk system: The invention provides a magneto-resistive effect device of the CPP structure comprising a nonmagnetic intermediate layer, and a first ferromagnetic layer and a second ferromagnetic layer stacked together and formed with the nonmagnetic intermediate layer sandwiched between them. The first ferromagnetic layer and the second ferromagnetic layer are magnetically coupled... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090109578 - Vertical magnetic recording head and magnetic recording apparatus using the same: The invention relates to a vertical magnetic recording head that records information on a recording medium, such as a magnetic disk, and a magnetic recording apparatus using the same. An object of the invention is to provide a vertical magnetic recording head capable of preventing the leakage of a magnetic... Agent: Greer, Burns & Crain

20090109580 - Magnetic field detecting element including tri-layer stack with stepped portion: A magnetic field detecting element comprises; a stack including an upper magnetic layer and a lower magnetic layer, and a non-magnetic intermediate layer sandwiched between said upper magnetic layer and said lower magnetic layer, wherein magnetization of said upper magnetic layer and said lower magnetic layer changes in accordance with... Agent: Knobbe Martens Olson & Bear LLP

20090109581 - Magnetoresistance effect element: There are provided a magnetoresistance effect element, a magnetic head, a magnetic head assembly and a magnetic recording system, which have high sensitivity and high reliability. The magnetoresistance effect element has two ferromagnetic layers, a non-magnetic layer provided between the ferromagnetic layers, and a layer containing an oxide or nitride... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090109579 - Magnetic recording medium, manufacturing method thereof and magnetic storage apparatus: A magnetic recording medium has a substrate, a first granular layer formed on the substrate, the first granular layer having a plurality of a first magnetic grains and a first oxide for separating the plurality of first magnetic grains from one another. A non-magnetic layer is formed on the first... Agent: Greer, Burns & Crain

  
04/23/2009 > patent applications in patent subcategories. category listing, related patent applications

20090103201 - System, method, and apparatus for performing metrology on patterned media disks with test pattern areas: Techniques for performing metrology on magnetic media disk formations that are arranged in curvilinear patterns are disclosed. Small integrated test patterns having rectangular or hexagonal periodicity are integrated among the concentric circles of patterned media formations. The test patterns cover only very small areas of the disk so as to... Agent: Bracewell & Giuliani LLP

20090103202 - Method for an equalizer computation in a media system using a data set separator sequence: Provided is a method for receiving a DSS sequence and a DSS readback sequence, which is a function of a channel processing of the DSS sequence by a read channel. A coefficient cyclic equalizer vector is generated as a function of the DSS sequence and the DSS readback sequence. An... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090103203 - Recording apparatus and control circuit: It relates to a hybrid recording apparatus using. The recording apparatus includes a magnetic disk medium for recording and reading data by a magnetic head, a nonvolatile memory in which a write cache area is allocated, a cache control unit for temporarily loading write data, which is recorded on the... Agent: Greer, Burns & Crain

20090103204 - Bit patterned medium having super-track, method of tracking track of bit patterned medium, head appropriate for bit patterned medium, and information recording/reproducing apparatus including bit patterned medium head: Provided are a bit patterned medium having a super-track, a method of tracking a track of the bit patterned medium, a head appropriate for the bit patterned medium, and an information recording/reproducing apparatus including the bit patterned medium and the head. The bit patterned medium includes a substrate, and a... Agent: Sughrue Mion, PLLC

20090103205 - Apparatus, method and program for controlling writing of data by tape recording apparatus: A technique for improving the performance of head alignment during reading of data from and writing data to a tape medium. An apparatus controls writing of data by a tape drive that drives a tape medium in both forward and reverse directions to record data. The apparatus includes a position... Agent: Ibm Microelectronics Intellectual Property Law

20090103206 - System, method and apparatus for wall slot in disk drive bypass channel for enhanced voice coil motor cooling: A hard disk drive bypass channel architecture incorporates enhanced cooling for voice coil motors. A cooling slot formed in a bypass channel component that is adjacent to the VCM alleviates VCM overheating problems. The slot compromises airflow from the bypass channel to provide sufficient secondary flow to cool the VCM... Agent: Bracewell & Giuliani LLP

20090103207 - Rotor hub, spindle motor and hard disk drive: In a method for manufacturing a rotor hub for use in a spindle motor, free-cutting stainless steel is used as a material of the rotor hub. A slug of free-cutting stainless steel is subjected to a plastic working to form a disk mounting portion and a cylindrical surface positioned radially... Agent: Volentine & Whitt PLLC

20090103208 - Magnetic head: According to an aspect of an embodiment, a magnetic head includes: a write element including a first magnetic pole and a second magnetic pole magnetically connected to the first magnetic pole; and a nonmagnetic insulating layer made of inorganic material surrounding the write element. The magnetic head further includes: upper... Agent: Greer, Burns & Crain

20090103209 - Apparatus for accessing storage media: A pickup for accessing moving storage media with a flat coil on a surface of a carrier, where for inserting an ohmic resistance into the coil circuit the same carrier has on one of its surfaces a conducting lead designed mainly to exhibit ohmic resistance and connected to the flat... Agent: Joseph J Laks, Vice President - Patent Operations Patent Operations

20090103210 - Apparatus and method for sensing an external magnetic field to protect a perpendicular magnetic recording (pmr) hard disk drive: A hard disk drive is disclosed including a voice coil motor and a magnetic sensor communicating with a control circuit. A magnetic sensor reading is created and used to stop access operations in response to the reading of an external magnetic field that may be strong enough to disrupt a... Agent: Gregory Smith & Associates

20090103211 - Perpendicular magnetic recording head having a short throat height wrap around trailing shield: A magnetic write head for perpendicular magnetic data recording having a trailing shield with a two step throat height. The trailing shield is formed over a non-magnetic bump that forms a notch in the leading edge of the trailing shield. This notch defines a first, smaller throat height closest to... Agent: Zilka-kotab, PC- Hit

20090103212 - Magnetic head suspension: An elastic plate connected at both ends to a pair of supporting pieces of a supporting portion and connected at center to a member forming a load beam portion functions as a load bending portion, thereby enhancing impact resistance against jumping motion of a magnetic head slider. A balance mass... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20090103213 - Magnetic head slider for absorbing vibrations: A magnetic head slider disposed opposite to a surface of a magnetic disk, includes a slider main body, a magnetic head element that reads and reproduces data from the magnetic disk, and a vibration absorbing unit that absorbs vibrations generated due to contact between any portion of the slider main... Agent: Kratz, Quintos & Hanson, LLP

20090103214 - Magnetic recording head comprising conical main pole tip and method of manufacturing the same: Provided is a vertical magnetic recording head having a main pole, a return yoke, and a coil, all of which are formed on a substrate, and a method of manufacturing the same. The main pole includes a vertical portion which is vertical to the substrate, a horizontal portion that connects... Agent: Sughrue Mion, PLLC

20090103215 - Magnetoresistive (mr) elements having improved hard bias seed layers: MR devices and associated methods of fabrication are disclosed. An MR device includes an MR element and a bias structure on either side of the MR element for biasing a free layer of the MR element. The bias structure includes an amorphous buffer layer, a first seed layer formed from... Agent: Duft Bornsen & Fishman, LLP

  
04/16/2009 > patent applications in patent subcategories. category listing, related patent applications

20090097148 - Head test apparatus and head test analysis system: A head test apparatus includes a loading section that installs the head; a head operation section that causes the head installed in the loading section to execute a test access; a test section that examines the head by judging whether a test access signal obtained from the head when the... Agent: Staas & Halsey LLP

20090097149 - Method and apparatus for controlling data rate of a tape drive: A method for controlling data rate of a tape drive is disclosed. The tape drive is connected to a computer system. The tape drive stores data by dividing the data into multiple codeword quads (CQs). A local memory within the tape drive includes drive to iteratively monitor data rate during... Agent: Dillon & Yudell, LLP

20090097150 - Interpolated just-in-time seek trajectories: Methods and apparatus of the present invention allow for interpolated Just in Time (iJIT) seek command control of hard drive actuators.... Agent: Patterson & Sheridan, L.L.P.

20090097151 - Information storage apparatus for adjusting flying height of head: According to an aspect of an embodiment, a storage apparatus has a motor for rotating a medium, a head for writing data into or reading data from the medium, the head having a space control element for changing a flying height of the head over the medium and a controller... Agent: Greer, Burns & Crain

20090097154 - Optimizing storage capacity by smoothly varying track pitch across a disk surface: A method for operating a fixed media hard disk drive using a plurality of disks on each of which the ratio of servo track pitch to data track pitch is smoothly varied across the surface of the disk as data is being written. The method allows the density of data... Agent: Saile Ackerman LLC

20090097152 - Patterned media with spacings adjusted by a skew function: Recording media comprises multiple first and second patterned media islands sequentially placed at different first and second radii along a length of a recording track. A recording head sequentially accesses the first and second islands as the head moves along a length of the recording track. Circumferential spacings between sequential... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20090097153 - Read/write head azimuth determination via servo band signal information: The present invention, in particular embodiments, provides methods, apparatuses and systems directed to calculating azimuth of a read/write head via signals transduced from a servo read pattern of a tape. The signals are utilized to calculate azimuth of the read/write head which is displayed on a screen. An operator can... Agent: Baker Botts L.L.P.

20090097155 - Magnetic media having a servo track written with a patterned magnetic recording head: A thin film magnetic recording head utilizing a timing based servo pattern is fabricated using a focused ion beam (FIB). The recording head is fabricated by sputtering a magnetically permeable thin film onto a substrate. A gap pattern, preferably a timing based pattern, is defined on the thin film and... Agent: Dorsey & Whitney LLP Intellectual Property Department

20090097156 - Magnetic recording disk and disk drive with patterned phase-type servo fields for read/write head positioning: A magnetic recording disk drive uses a disk having pre-patterned servo sectors extending generally radially across the data tracks. The servo sectors include at least two position error signal (PES) bursts or fields. The phases of the PES fields in the servo readback signal are demodulated to generate a PES... Agent: Thomas R. Berthold

20090097157 - Method and system for head position control in embedded disk drive controllers: A track follow controller includes a burst selector selecting at least one burst pair based on burst pair selection data. A linear position calculator calculates a primary head position and a secondary head position based on the at least one burst pair, and calculates a head linear position based on... Agent: Harness, Dickey & Pierce P.L.C

20090097158 - Perpendicular magnetic write head with dual pancake write coils: A method for manufacturing a magnetic write head for perpendicular magnetic data recording. The method allows an upper write coil to be formed directly on a conformally deposited layer of non-magnetic material such as alumina which has been deposited over a magnetic shaping layer and write pole. The method allows... Agent: Zilka-kotab, PC- Hit

20090097159 - Perpendicular magnetic recording head and manufacturing method therefor: A manufacturing method for a perpendicular magnetic recording head includes the steps of forming a groove in a first nonmagnetic layer, forming a side shield, forming a second nonmagnetic layer, forming a main-magnetic-pole front end portion and forming a main-magnetic-pole yoke portion. The groove extends in a front-rear direction orthogonal... Agent: Greer, Burns & Crain

20090097160 - Magnetic recording disk and disk drive with amplitude-type servo fields having patterned servo islands for read/write head positioning: A magnetic recording disk drive has a disk with pre-patterned nondata servo sectors extending generally radially across the data tracks. The disk may be a patterned-media disk with both pre-patterned data islands and pre-patterned nondata servo sectors. The servo sectors include a synchronization pattern of generally radially directed discrete magnetized... Agent: Thomas R. Berthold

20090097161 - Head actuator assembly, disk device provided with the same, and manufacturing method for head actuator assembly: According to one embodiment, a disk device includes a disk, a drive section which is configured to support and rotate the disk, a head, and a head actuator assembly. The head actuator assembly includes a board unit including a base portion on which an electronic component is mounted, a main... Agent: Knobbe Martens Olson & Bear LLP

20090097162 - Head suspension, load beam, and method of manufacturing load beam: A load beam is capable of securing a required level of positioning accuracy for a slider, a load beam has a body and a dimple, the body is made of a plate having a first surface and a second surface, the dimple has a convex curved surface protruding from the... Agent: Jordan And Hamburg LLP

20090097163 - Data storage device: Embodiments of the present invention help to provide a sealed hard disk drive (HDD) with high reliability. According to one embodiment, a HDD is a hermetically sealed HDD. A base has an opening of a through-hole on its bottom; a feedthrough is provided so as to close the opening. A... Agent: Townsend And Townsend And Crew LLP

20090097164 - Drive with voice coil motor: A drive is provided executing high-speed oscillatory motion. A voice coil motor in a pixel shifter includes a coil of a rectangular shape producing thrust along an axis, a flap fixing the coil, and flat springs giving to the flap an urging force against the thrust. An oscillation axis of... Agent: Birch Stewart Kolasch & Birch

20090097166 - Magnetoresistive element, magnetic head and magnetic recording/reproducing apparatus: A magnetoresistive element has a first magnetic layer and a second magnetic layer separate from each other, the first magnetic layer and the second magnetic layer each having a magnetization whose direction is substantially pinned, and a non-magnetic conductive layer formed in contact with the first magnetic layer and the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090097165 - Method of manufacturing magnetic recording medium, magnetic recording medium and surface treatment apparatus: The present invention provides a magnetic recording medium having superior startup operation and durability as well as satisfactory surface lubricity. The present invention relates to a method of manufacturing a magnetic recording medium in which at least a magnetic layer, a protective film layer and a lubricant layer are sequentially... Agent: Sughrue Mion, PLLC

20090097167 - Magnetic sensor, magnetic field sensing method, semagnetic recording head, and magnetic memory device: A magnetic sensor includes a magnetoresistance element having a peak of a thermal fluctuation strength of magnetization under a magnetic field having a certain frequency, a frequency filter connected to the magnetoresistance element and having its transmittance decreased or increased in substantially the frequency of the magnetic field to output... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090097168 - Magnetic thin film, and magnetoresistance effect device and magnetic device using the same: A magnetic thin film being ferromagnetic and exhibiting large spin polarization at room temperature is provided that comprises a substrate (2) and a CO2Fe(Si1-xAlx) thin film (3) formed on the substrate (2) where 0<x<1 and wherein the CO2Fe(Si1-xAlx) thin film (3) has a L21 or a B2 structure. There may... Agent: Masao Yoshimura, Chen Yoshimura LLP

20090097170 - Ferromagnetic tunnel junction element, magnetic recording device and magnetic memory device: A ferromagnetic tunnel junction element is a magnetoresistance effect element wherein an electric resistance varies in accordance with a magnetic field applied. The ferromagnetic tunnel junction element includes a pinned layer wherein at least a part of a magnetization direction is held, and an insulation layer formed on the pinned... Agent: Greer, Burns & Crain

20090097169 - Magnetic sensor, magnetic field sensing method, semagnetic recording head, and magnetic memory device: A magnetic sensor includes a magnetoresistance element having a peak of a thermal fluctuation strength of magnetization under a magnetic field having a certain frequency, a frequency filter connected to the magnetoresistance element and having its transmittance decreased or increased in substantially the frequency of the magnetic field to output... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

  
04/09/2009 > patent applications in patent subcategories. category listing, related patent applications

20090091853 - Apparatus, system, and method for interchange testing: An apparatus, system, and method are disclosed for interchanging testing. A test module moves a first tape from a tape pool to a first reserved slot of plurality of reserved slots using an accessor. In an embodiment, there is one (1) reserved slot corresponding to each of a plurality of... Agent: Kunzler & Mckenzie

20090091854 - Write timing system for hard disk drives with bit patterned media: A hard disk drive with a patterned disk that has a plurality of data fields. Each data field includes a sync field and a plurality of sync marks. Data is written onto the patterned disk in accordance with a write clock. The write clock is generated and synchronized by the... Agent: Irell & Manella LLP

20090091855 - Method for improved insitu spiral writing: A system includes a first current generator generating a first current to bias an actuator arm against a spring when a control signal is received and discontinues said first current to release said spring and accelerate said actuator arm when servo signals are generated. A second current generator generates a... Agent: Harness, Dickey & Pierce P.L.C

20090091856 - Magnetic recording medium and magnetic recording/reproducing system: A magnetic recording medium includes a tape-shaped nonmagnetic support, and a vertical magnetic layer formed on a main surface of the nonmagnetic support by a vacuum thin-film forming technique, signals being recorded on and reproduced from the vertical magnetic layer in a linear system. In the magnetic recording medium, the... Agent: Sonnenschein Nath & Rosenthal LLP

20090091857 - System and apparatus for mass-balanced spoiler in disk storage devices: A system and apparatus for reducing flutter in disk drive spoilers positions the center of mass of the mean aerodynamic section of the spoiler at or ahead of the quarter-chord location nearest the leading edge of the spoiler. A balance weight may be formed in or attached to the spoiler.... Agent: Bracewell & Giuliani LLP

20090091858 - Head suspension, load beam, and method of manufacturing load beam: A method of manufacturing a load beam precisely positions a slider on a dimple of a load beam according to precisely obtained positional data of the dimple, the method includes preparing a work which is a flat plate and serves as the load beam, irradiating at least a part of... Agent: Jordan And Hamburg LLP

20090091859 - Head suspension, load beam, method of manufacturing load beam, and method of processing work: A method of manufacturing a load beam directly improves the finishing accuracy of the surface of the load beam having a tab and/or a dimple, and the method includes a modifying process of preparing a flat plate work serving as the load beam and irradiating a part of a surface... Agent: Jordan And Hamburg LLP

20090091860 - Hga suspension pad barrier for elimination of solder bridging defect: A method and apparatus for preventing solder bridging. The method includes providing a substrate layer upon which a solder pad is disposed. The method further includes providing a signal conductive layer within the substrate layer. The method also includes forming a solder pad upon the signal conductive layer. The solder... Agent: Hitachi C/o Wagner Blecher LLP

20090091862 - Method to make 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: Saile Ackerman LLC

20090091861 - Perpendicular magnetic recording write head with a side shield: A side shield structure for a PMR write head is disclosed that narrows write width and minimizes adjacent track and far track erasure. The side shield structure on each side of the write pole has two sections. One section along the ABS and adjacent to the pole tip has a... Agent: Saile Ackerman LLC

20090091864 - Current-perpendicular-to-the-plane (cpp) magnetoresistive sensor with antiparallel-pinned layer containing silicon: A current-perpendicular-to-the-plane (CPP) spin-valve (SV) magnetoresistive sensor uses an antiparallel (AP) pinned structure and has a ferromagnetic alloy comprising Co, Fe and Si in the reference layer of the AP-pinned structure and optionally in the CPP-SV sensor's free layer. The reference layer or AP2 layer is a multilayer of a... Agent: Thomas R. Berthold

20090091865 - Cpp device with uniformity improvements: A novel CCP scheme is disclosed for a CPP-GMR sensor in which an amorphous metal/alloy layer such as Hf is inserted between a lower Cu spacer and an oxidizable layer such as Al, Mg, or AlCu prior to performing a pre-ion treatment (PIT) and ion assisted oxidation (IAO) to transform... Agent: Saile Ackerman LLC

20090091863 - Magnetoresistive element: A magnetoresistive element includes a first electrode layer, a first fixed layer provided on the first electrode layer and having a fixed magnetization direction, a first intermediate layer provided on the first fixed layer and made of a metal oxide, a free layer provided on the first intermediate layer and... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

  
04/02/2009 > patent applications in patent subcategories. category listing, related patent applications

20090086354 - Signal reproducing method, magnetic head and magnetic recording and reproducing apparatus: A magnetic head, includes a magnetic oscillation element, the oscillation frequency of which is modulated by a medium magnetic field, and a reproducing device configured to detect a phase difference between the adjacent oscillation signals derived from the magnetic oscillation element and output a phase difference signal as a reproduced... Agent: Charles N.j. Ruggiero, Esq. Ohlandt, Greeley, Ruggiero & Perle, L.L.P.

20090086355 - Spindle stage for testing magnetic head with vcm mechanism and automatic magnetic head mounting/demounting device: To provide a spindle stage for testing a magnetic head in which high precision servo following can be performed by an inexpensive VCM mechanism without using a piezoelectric element, and to provide a device for mounting/demounting a magnetic head automatically. In a spindle stage for testing a magnetic head which... Agent: Mccormick, Paulding & Huber LLP

20090086356 - Detecting and correcting insertion and deletion of bits for bit patterned media storage systems: A method of determining errors in a data storage device is disclosed. The disclosed method includes receiving a first code word from the data storage device. The method further includes determining whether a data error exists in the code word by analyzing a plurality of subsequent code words. Detecting a... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20090086357 - In drive written spirals for self servo writing: A method of self servo writing is shown. In example embodiments, spirals or other indexing patterns can be written entirely within a hard disk drive, thus enabling self servo writing of the entire disk surface. Increased accuracy in spiral writing in turn increases the track density achievable using self servo... Agent: Schwegman, Lundberg & Woessner/toshiba

20090086358 - Method and system for magnetic recording using self-organized magnetic nanoparticles: A method and system for magnetic recording using self-organized magnetic nanoparticles is disclosed. The method may include depositing surfactant coated nanoparticles on a substrate, wherein the surfactant coated nanoparticles represent first bits of recorded information. The surfactant coating is then removed from selected of the surfactant coated nanoparticles. The selected... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20090086359 - Formatting disk drive data using format field elements: Formatting disk drive data using format field elements (FFEs). A processing module (which can be a general purpose processor or a RISC (Reduced Instruction Set Computer) processor) is employed to generate FFEs that are employed to govern operation of the various data formatting modules within a formatting system within a... Agent: Garlick Harrison & Markison

20090086360 - Low complexity servo demodulation algorithm for probe storage: A method of calculating a position error signal is provided. The method includes receiving an analog signal from a data channel and converting the analog signal to a one bit wide digital signal. The analog signal is converted to a digital signal at an oversampled frequency. The position error signal... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20090086361 - Storage apparatus and method for processing recording compensation: According to an aspect of an embodiment, a storage apparatus has a storage for storing a plurality of compensation values in association with a plurality of bit sequence patterns, a head for writing data into a medium and a controller for controlling the apparatus and driving the head, the controller... Agent: Greer, Burns & Crain

20090086362 - Recording disk and disk drive: Embodiments of the present invention provide a recording disk capable of curtailing the amount of servo data to be stored thereon, and a disk drive. According to one embodiment, servo data area sets each of a first servo data area and plural second servo data areas arranged in that order... Agent: Townsend And Townsend And Crew LLP

20090086363 - Transducer positioning responsive to complex position error signal: Positioning of a transducer is controlled in response to real and imaginary component signals that are formed from a position error signal (PES) which is indicative of the transducer location on a media.... Agent: Myers Bigel Sibley & Sajovec, P.A.

20090086364 - Per wedge worf determinations for disk drive: A method for locating a track on a disk surface having a plurality of wedges of servo information includes demodulating servo information for a first servo wedge, and determining a correction factor for a written in repeatable runout for the servo information for the first servo wedge before demodulating servo... Agent: Schwegman, Lundberg & Woessner/toshiba

20090086365 - Read write offset error correction using geometric reference in self servo write process: A hard disk drive having a self servo write offset error correction mechanism to improve self servo write process is disclosed. In accordance with certain aspects of the present invention, there is provided a self servo write method that can measure an accurate position offset between the read-head element and... Agent: Hitachi C/o Wagner Blecher LLP

20090086366 - Hard disk drive off track event method and device: Methods and devices are shown that identify suitable second data operations after experiencing an off track event in a first data operation and perform the second data operations before correcting an off track event. Methods and device as shown provide increased efficiency in a hard disk drive. Time that normally... Agent: Schwegman, Lundberg & Woessner/toshiba

20090086367 - Disk drive device, manufacturing method thereof, and method for setting heater power value for a heater for adjusting a clearance: Embodiments of the present invention help to accomplish accurate and reliable clearance control. In one embodiment of the present invention, a disk drive device adjusts the clearance between a head element portion and a disk with a heater on a slider. The clearance control according to the present embodiment incorporates... Agent: Townsend And Townsend And Crew LLP

20090086368 - Magnetic recording medium, magnetic signal reproduction method and magnetic signal reproduction system: The present invention relates to a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on one surface of a nonmagnetic support and a backcoat layer comprising a granular material and a binder on the other surface of the nonmagnetic support, wherein the backcoat layer... Agent: Sughrue Mion, PLLC

20090086369 - Magnetic recording medium, magnetic signal reproduction method and magnetic signal reproduction system: An aspect of the present invention relates to a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on one surface of a nonmagnetic support and a backcoat layer on the other surface of the nonmagnetic support, wherein a number of indentations equal to or... Agent: Sughrue Mion, PLLC

20090086370 - Thin film magnetic head structure, method of making same and thin film magnetic head: A thin-film magnetic head structure has a configuration adapted to manufacture a thin-film magnetic head configured such that a main magnetic pole layer including a magnetic pole tip on a side of a medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole tip so as... Agent: Oliff & Berridge, PLC

20090086371 - Recording-medium driving device: When a medium casing is moved deep into a device, a reference guide pin with a greater length provided in a driving-device body is first inserted into a first positioning hole of the medium casing and a subsidiary guide pin is subsequently inserted into a second positioning hole. This implies... Agent: Beyer Law Group LLP

20090086372 - Perpendicular magnetic recording medium, method of manufacturing the same, and magnetic recording device: Embodiments of the present invention help to provide a discrete track medium for realizing a high track density in a low price by adopting a configuration, in which filling of a non-magnetic material into a guard band portion and smoothing processing of a medium surface are not required. According to... Agent: Townsend And Townsend And Crew LLP

20090086373 - Disk drive with turbulence reduction plate: A method for assembling a disk drive includes placing disks on a spindle, and pivoting a turbulence reduction plate to a position between the disks on the spindle. The turbulence reduction plate is placed on a pivot associated with the housing and then rotated into position. The turbulence reduction plate... Agent: Schwegman, Lundberg & Woessner, P.A.

20090086374 - High density electrical interconnect assembly: An electrical connection assembly includes a body, an electrically insulative layer supported by the body, a first bond pad defined on the electrically insulative layer, a first electrical contact pad defined on the electrically insulative layer and electrically isolated from the first bond pad, a circuit located adjacent to the... Agent: Kinney & Lange, P.A.

20090086375 - Apparatus for measuring vibration characteristics of head gimbal assembly: An apparatus for measuring the vibration characteristics of a head gimbal assembly can grasp resonant characteristics at high frequencies and efficiently measure the vibration characteristics of the head gimbal assembly, the apparatus has a shaker head to which the head gimbal assembly is attached, the shaker head has a main... Agent: Jordan And Hamburg LLP

20090086376 - Actuator latching mechanism for magnetic disk drive: Embodiments of the present invention provide an inexpensive latching mechanism having a necessary and sufficient function to hold an actuator of a magnetic disk drive and including a latch formed in a one-piece structure. According to one embodiment, a latching mechanism for a magnetic disk drive includes a latch lever,... Agent: Townsend And Townsend And Crew LLP

20090086377 - Actuator mechanism for magnetic disk drive: Embodiments of the present invention help provide a simple and inexpensive actuator mechanism for a magnetic disk drive. The actuator mechanism includes an approximately circular coil and a simple shaped magnet, and is capable of displaying adequate performance required for the magnetic disk drive. According to one embodiment, the magnetic... Agent: Townsend And Townsend And Crew LLP

20090086379 - Head suspension and piezoelectric actuator: A head suspension with a piezoelectric element involves simple wiring and realizes high reliability, the head suspension has a base plate, a load beam connected to the base plate, a flexure attached to the load beam, and a piezoelectric actuator having a piezoelectric element arranged between the base plate and... Agent: Jordan And Hamburg LLP

20090086378 - Pure rotary microactuator: A pure rotary microactuator comprising a spring assembly etched within a silicon substrate is disclosed. A first piezoelectric device is coupled with a first portion of the spring assembly and a second piezoelectric device coupled with a second portion of the spring assembly. The first piezoelectric device changes shape in... Agent: Hitachi C/o Wagner Blecher LLP

20090086380 - Magnetic recording head having an extended stripe height and a shortened shield height: Magnetic recording heads and associated methods of fabrication are disclosed. A magnetic recording head has a first shield and a magnetoresistance (MR) read element formed on the first shield. The first shield has a shield height that is defined by a distance between the air bearing surface (ABS) of the... Agent: Duft Bornsen & Fishman, LLP

20090086381 - Manufacturing method of thin-film magnetic head with dishing suppressed during polishing: A manufacturing method of a thin-film magnetic head with a dishing suppressed in the case of planarizing a magnetic shield which a read head portion has or a magnetic pole which a write head portion has is provided. A manufacturing method of a thin-film magnetic head comprising a read head... Agent: Oliff & Berridge, PLC

20090086382 - System and method for changing resonant frequency in hard disk drive components: A post manufacturing inventory system to improve disk drive inventory after manufacturing are disclosed. One embodiment provides a computer system having serial number scanning capabilities to scan manufactured disk drive during a post manufacturing inventory count to reconcile with a drive count during manufacturing. In addition, a count verifier is... Agent: Hitachi C/o Wagner Blecher LLP

20090086383 - Cpp type magneto-resistive effect device and magnetic disk system: The invention provides a giant magneto-resistive effect device of the CPP (current perpendicular to plane) structure (CPP-GMR device) comprising a spacer layer, and a first ferromagnetic layer and a second ferromagnetic layer stacked together with said spacer layer sandwiched between them, with a sense current passed in the stacking direction,... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090086385 - Current perpendicular to plane magnetoresistive sensor with reduced read gap: A magnetoresistive sensor having a greatly reduced read gap. The sensor has a pinned layer structure formed above the free layer. A layer of antiferromagnetic material (AFM layer) is formed over the pinned layer structure and has a front edge disposed toward, but recessed from the air bearing surface. An... Agent: Zilka-kotab, PC- Hit

20090086384 - Magneto-resistance effect element including ferromagnetic layer having granular structure: A magneto-resistance effect element of the present invention comprises: a pair of ferromagnetic layers whose magnetization directions change in accordance with an external magnetic field, each of the pair of ferromagnetic layers having a granular structure in which a large number of magnetic grains are distributed within a nonmagnetic matrix... Agent: Knobbe Martens Olson & Bear LLP

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