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Dynamic magnetic information storage or retrieval January recently filed with US Patent Office 01/12

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
01/26/2012 > 17 patent applications in 16 patent subcategories. recently filed with US Patent Office

20120019945 - Method and system for measuring noise of a magnetic head: A method for measuring noise of a magnetic head includes setting a plurality of threshold values, applying bias current or voltage to a read element of the magnetic head, applying an external transverse magnetic field to the magnetic head, amplifying output signal from the read element to produce an amplified... Agent: Sae Magnetics (h.k.) Ltd.

20120019946 - Systems and methods for adaptive baseline compensation: Various embodiments of the present invention provide systems and methods for reducing low frequency loss in a magnetic storage device. For example, some embodiments provide data processing circuits that include: an input circuit, a processing circuit, a data detection circuit, and a baseline compensation circuit. The input circuit receives a... Agent:

20120019947 - Technique for programmable rise time in hard disk drive writer: A write channel for a hard disk drive has a write current with a programmably adjustable rise time, and includes first and second analog write data signal paths having respective resistive nodes. First and second programmable capacitors are connected to the resistive nodes, whereby changes in capacitance of the first... Agent: Texas Instruments Incorporated

20120019948 - Arrangement and processing of longitudinal position information on a data storage medium: There is described apparatus (800) to decode longitudinal position (LPOS) information from non-shifted servo elements (a1, a4, a7) and an unbroken sequence of plural shifted servo elements (a2-a3, a5-a6), variations in the relative displacement of the non-shifted and shifted elements encoding the LPOS information. The apparatus is operable to receive... Agent:

20120019949 - Tape cartridge auxiliary memeory based library: A data storage library is described including a plurality of tape cartridges wherein each of the tape cartridges possesses an auxiliary radio frequency memory device in which auxiliary digital data is stored. The library also includes at least one drive disposed substantially within the library capable of transferring user data... Agent: Spectra Logic Corporation

20120019950 - Pad bit injection during read operation to improve format efficiency: Injecting pad bits during a read operation to improve format efficiency is disclosed. In some embodiments, a pad sequence associated with error correction is not stored in a sector on a disk. Instead, the pad sequence is merged at a read channel with data stored in a sector that is... Agent: Link_a_media Devices Corporation

20120019951 - Method and apparatus for bipolar servo marks writing with self dc-erase: A method and apparatus for bipolar and self DC-erase write of servo marks. The method includes providing a servo write head having first and second write gaps; and applying a varying current to the servo write head to alternately DC-erase and write sets of servo marks to regions of a... Agent: International Business Machines Corporation

20120019952 - magnetic media tester and a method of magnetic media testing: A magnetic media tester comprising a Laser Doppler Vibrometer (LDV) head; and a magnetic read head; the LDV head and the magnetic read head being configured for obtaining correlatable data of a region on a magnetic disk.... Agent:

20120019953 - 'tape drive velocity control': In accordance with the present invention, a method of operating a magnetic tape drive, a magnetic tape drive and a servo control system are provided for obtaining and maintaining velocity control in a magnetic tape drive. In one embodiment, a method is provided for operating a magnetic tape drive. The... Agent: International Business Machines Corporation

20120019955 - Hard disk drive, method for estimating back electromotive force, and method for controlling velocity of head: According to one embodiment, a hard disk drive includes a head, a voice coil motor, a driving circuit, an identification unit, a storage unit, and an estimation unit. The head is configured to perform write/read of information to a storage medium. The voice coil motor is configured to move the... Agent: Kabushiki Kaisha Toshiba

20120019954 - Method and apparatus for bipolar servo marks writing with high output: A method and apparatus for bipolar servo marks writing with high output. The method includes providing a servo write head having first and second write gaps; and applying a varying current comprising either (i) abrupt changes in current in combination with current ramps or (ii) patterns of high-frequency current pulses... Agent: International Business Machines Corporation

20120019956 - Adjusting a transducer head for transferring data: A transducer head apparatus (140) is disclosed for concurrently transferring data relative to a plurality of tracks on a data carrier. The head apparatus comprises a body (310) extending longitudinally, the body supporting a plurality of longitudinally spaced transducer elements (240, 241, 242, 250, 251, 252, 260, 261, 255, 256,... Agent:

20120019957 - Method of measuring non-coherent runout for a disk drive: In a disk drive, a modified adaptive runout compensation algorithm is employed to measure non-coherent repeatable runout (RRO) of a track. The adaptive runout compensation algorithm is used to control the transducer head to follow the average RRO of adjacent tracks during the process of computing correction factors for non-coherent... Agent: Kabushiki Kaisha Toshiba

20120019958 - Rack . pinion mechanism, an accessor, and a magnetic tape apparatus: A rack•pinion mechanism in which strength of a member to form a rack can be secured and a member including a pinion can be securely moved in a predetermined direction, and an accessor and a magnetic tape apparatus each including the mechanism are provided. For this purpose, in a picker... Agent:

20120019959 - Magnetic recording medium and storage apparatus: A magnetic recording medium includes a non-magnetic granular layer, and a recording layer provided on the non-magnetic granular layer, wherein the recording layer includes a first granular magnetic layer provided on the non-magnetic granular layer, and a second granular magnetic layer provided on the first granular magnetic layer, and a... Agent: Showa Denko K.k.

20120019960 - Magnetic recording medium: According to one embodiment, a bit patterned medium includes a substrate, and a magnetic recording layer disposed above the substrate and including patterns of protrusions. Each of the protrusions contains a plurality of crystal grains. An average distance between the crystal grains is 0.5 to 3.0 nm in each of... Agent: Kabushiki Kaisha Toshiba

20120019961 - Method of seek trajectory generation for better tracking and faster settling in hard disk drives: A hard disk drive with a circuit that controls a voice coil motor. The circuit provides a driving current to the voice coil motor to move a head of the drive in a seek routine. The seek routine includes a computation of a driving current that is a function of... Agent: Samsung Electronics Co., Ltd.

  
01/19/2012 > 8 patent applications in 8 patent subcategories. recently filed with US Patent Office

20120014010 - Determining a reference waveform used by a correlator in a servo channel: Provided are a method, servo channel, and tape drive for determining a reference waveform used by a correlator in a servo channel. Sequences of servo signal samples are provided from read servo signals read from a servo pattern on a recording medium. A determination is made of a reference waveform... Agent: International Business Machines Corporation

20120014011 - Disk file preamplifier frequency-response and time delay compensation: An apparatus including one or more reader circuits, one or more writer circuits, and a loopback channel. The one or more reader circuits may be configured to read data from a magnetic medium. The one or more writer circuits may be configured to write data to the magnetic medium. The... Agent:

20120014012 - Varying data reader response: A reader apparatus is disclosed to read data magnetically stored on a storage medium. The apparatus has a sense structure to change resistance in response to a proximity of a stored magnetic field, and a variable magnetic field biasing arrangement to vary an active response length of the sense structure.... Agent:

20120014013 - Disk drive with variable incremented counting of writes to the data tracks for minimizing the effect of far track erasure: A hard disk drive (HDD) minimizes the effects of far track erasure (FTE) by counting the number of writes to the data tracks and incrementing counters based on the known effect of FTE on each track. The extent of the FTE effect is determined for each track within a range... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20120014014 - Data recording and reading device and method: Provided is a method for recording data to a tape medium in such a manner as to achieve the easy management of mutually related multiple data pieces. First data and second data continuously received as a file from a higher level apparatus are accumulated in multiple buffer segments in the... Agent: International Business Machines Corporation

20120014015 - Hard disk drive having regions corresponding to different speeds at which storage surface rotates: A hard disk drive includes a storage surface, a motor, a read/write had, and a number of regions into which the storage surface is divisible. Data is writable to and data is readable from the storage surface. The motor is to rotate the storage surface at a variable speed. The... Agent:

20120014016 - Motor and recording disc driving device: There are provided a motor and a recording disc driving device, which may improve a coupling structure of the motor to enable a magnet provided in a rotor to thereby double as a conventional stopper. The motor may include: a sleeve into which a shaft is rotatably inserted; a sleeve... Agent: Samsung Electro-mechanics Co., Ltd.

20120014017 - Suspension substrate, suspension, head suspension, hard disk drive, method for manufacturing suspension substrate, and method for testing continuity of suspension: A suspension substrate according the present invention includes: an insulating layer; a metallic support layer provided on the actuator element's side of the insulating layer. A wiring layer is provided on the other side of the insulating layer. This wiring layer includes a plurality of wirings and a wiring connection... Agent: Dai Nippon Printing Co., Ltd.

  
01/12/2012 > 14 patent applications in 10 patent subcategories. recently filed with US Patent Office

20120008224 - Magnetic transfer master substrate, magnetic transfer method using the substrate, and magnetic transfer medium: A magnetic transfer master substrate includes a non-magnetic base having depressed portions formed on a surface thereof corresponding to an information signal array, a ferromagnetic body formed in the depressed portions and having a top portion thereof protruding above the surface of the non-magnetic base, and a non-magnetic protective film... Agent: Fuji Electric Device Technology Co., Ltd.

20120008225 - Fly capable slider test socket: The present application is directed to a slider supporting apparatus for flying a slider of a hard disk drive in the manufacturing process to provide electrical performance characteristics. The present invention discloses an integrated design including the electrical interconnect, the gimballing mechanism, the preload mechanism and the slider supporting mechanism... Agent:

20120008226 - Fly capable slider test socket: The present application is directed to a slider supporting apparatus for flying a slider of a hard disk drive in the manufacturing process to provide electrical performance characteristics. The present invention discloses an integrated design including the electrical interconnect, the gimballing mechanism, the preload mechanism and the slider supporting mechanism... Agent:

20120008227 - Heat transfer for a hard-drive pre-amp: A substrate for mounting a preamp chip thereupon, fabricated using a stiffener layer made of a conductive material; an insulating layer provided over the circuitry area of the substrate; a circuitry made of a conductive material provided over the insulating layer; and a flap which is an extension of the... Agent: Nitto Denko Corporation

20120008228 - Magnetic recording media and magnetic recording system: This invention provides a magnetic recording medium excellent in terms of corrosion resistance. The magnetic recording medium comprises a magnetic recording layer, a protective layer and a lubricant layer provided on a nonmagnetic substrate, and the lubricant layer comprises a compound having a heterocyclic ring.... Agent: Hitachi, Ltd.

20120008229 - Magnetic core plasmon antenna with improved coupling efficiency: A TAMR (Thermal Assisted Magnetic Recording) write head uses the energy of optical-laser generated plasmons in a magnetic core plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. To enable the TAMR head to operate most effectively, the maximum gradient and value of... Agent: Headway Technologies, Inc.

20120008231 - Magnetic head slider and magnetic disk unit using same: There is provided the magnetic head slider including a reader, a writer, and a heater. A contact surface coming into contact with a medium surface when power is applied to the heater, and a step surface formed on both sides of the contact surface, through the intermediary of a step... Agent: Hitachi, Ltd.

20120008230 - Thin film magnetic head, head gimbals assembly, head arm assembly and magnetic disk device: This thin film magnetic head has a magnetic read head and a magnetic write head each having respective end surfaces exposed to an ABS. The magnetic read head includes a magnetic reader including an end surface exposed to the ABS, first heat generator disposed on an opposite side of the... Agent: Tdk Corporation

20120008232 - Controlling positions of storage media heads: Controlling positions of storage media heads is disclosed. An example storage media head position controller includes a position error filter to filter a media head position error based on a target position for a storage media head relative to a storage medium and a present media head position to generate... Agent:

20120008233 - Extended cavity vcsel mounted to substrate with electrical and thermal contact to substrate and optical power directed toward substrate: A system according to one embodiment includes a slider adapted for use in a hard disk drive; and a laser coupled to a slider, wherein electrical contacts of the laser are positioned towards or face the slider, wherein light from the laser is emitted towards the slider, wherein the slider... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20120008234 - Low friction tape head and system implementing same: A magnetic data storage system according to one embodiment includes a magnetic head; and guides on opposite sides of the magnetic head for directing a magnetic medium over the magnetic head. The magnetic head includes: outer portions each having a tape bearing surface and an array of transducers selected from... Agent: International Business Machines Corporation

20120008235 - Reduce leakage of low-density gas during low-density gas injection into a disk drive: Embodiments of the present invention help to prevent leakage of low-density gas during low-density gas injection into a disk drive device and to perform low-density gas injection efficiently. In a hard disk drive (HDD) according to one embodiment of the present invention, an injection hole filter with a valve function... Agent:

20120008236 - Pmr with improved writability and process controllability by double layer patterning: Improved writability and a sharper neck transition are achieved in a PMR writer with a yoke that has essentially vertical sidewalls and a write pole that has sidewalls with a beveled angle. An alumina mold is made with a negative differential bevel angle by employing a two mask process. A... Agent: Headway Technologies, Inc.

20120008237 - Wide-bandwidth dielectric windowing for conductor suspension structure: Approaches for a hard-disk drive suspension interconnect having a wide bandwidth. A suspension interconnect includes a substrate layer, a dielectric layer disposed on the substrate layer, and a plurality of transmission-line (TL) conductors disposed within the dielectric layer. Air gaps may be disposed around the TL conductors to minimize the... Agent:

  
01/05/2012 > 19 patent applications in 14 patent subcategories. recently filed with US Patent Office

20120002313 - Card reader and control method of card reader: The present invention is to provide a card reader that can prevent the illegal acquisition of magnetic information recorded on a magnetic stripe, based on an output signal from a pre-head. More specifically described, in a card reader having a card insertion slot for guiding a magnetic card having a... Agent:

20120002315 - Magnetic disk drive and refresh method for the same: According to one embodiment, a magnetic disk drive includes a grouping module and a refresh controller. The grouping module partitions a set of tracks on a disk into a plurality of groups. Each of the plurality of groups includes a plurality of tracks including at least two tracks with nonconsecutive... Agent: Kabushiki Kaisha Toshiba

20120002316 - Magnetic recording apparatus and method of testing magnetic recording apparatus: According to one embodiment, there is provided a magnetic recording apparatus including a head slider including read and write elements, and a magnetic recording medium including magnetically recordable recording tracks with a width L1, a wide land track with a width L2 larger than the width L1 of the recording... Agent: Kabushiki Kaisha Toshiba

20120002314 - Thermal read/write offset compensation: A HDD comprising a temperature sensor disposed inside the HDD configured to periodically measure temperature inside of said hard disk drive; a magnetic disk; a read head; a write head; memory for storing RWO data. The RWO data is a function of a distance between the read head and the... Agent:

20120002317 - Writing data to tape medium: In a controller of a tape drive, a CM input-output unit recognizes a tape format; a tape variable acquisition unit acquires tape variables; a setting variable acquisition unit acquires setting variables; and a minimum number calculator calculates a minimum number m of sub datasets, which are to be written to... Agent: International Business Machines Corporation

20120002319 - Magnetic recording and reproduction device and flying height control method: According to one embodiment, a magnetic recording and reproduction device includes a head; a heater configured to heat the head by electric power supplied; a detector provided with a resistive element and configured to detect a contact between the head and a magnetic recording medium by detecting a change in... Agent: Kabushiki Kaisha Toshiba

20120002318 - Transducer assembly for heat assisted magnetic recording light delivery: An apparatus includes a transducer assembly including a waveguide having a core layer and a cladding layer adjacent to the core layer, and a grating structured to couple electromagnetic radiation into the waveguide; and a light source mounted on the cladding to direct light onto the grating at an acute... Agent: Seagate Technology LLC

20120002321 - Head suspension assembly and disk device with the same: According to one embodiment, a head suspension assembly includes an arm includes upper and lower surfaces, a suspension extending from the arm, a head supported by the suspension, and restriction plates bonded on the upper and lower surfaces of the arm. The restriction plates includes extending portions projecting from the... Agent: Kabushiki Kaisha Toshiba

20120002320 - Particle-capturing device including a component configured to provide an additional function within an enclosure exclusive of capturing particles: A particle-capturing device. The particle-capturing device includes a component having a surface that is configured to be disposed inside an enclosure, and is configured to make contact with an air-stream carrying particles within the enclosure. The component includes an electrostatic particle-capturing portion that includes a dielectric electrically insulating portion, and... Agent:

20120002322 - Head gimbal assembly and disk drive with the same: According to one embodiment, a head gimbal assembly includes a load beam, a metal plate mounted on the load beam and constituting a gimbal includes a limiter portion, a flexure includes a plurality of conductors formed over the metal plate with an insulating layer therebetween, a slider includes a head... Agent: Kabushiki Kaisha Toshiba

20120002323 - Method for inspection of magnetic recording medium, magnetic recording medium, and magnetic recording/reproducing device: Disclosed is a method for inspecting a magnetic recording medium in which the adhesion (transfer) of contaminants or corrosive materials to a magnetic head can be prevented. Specifically disclosed is a method for inspecting a magnetic recording medium including a non-magnetic substrate and additionally comprising at least a magnetic layer,... Agent: Showa Denko K.k.

20120002324 - Disk drive with balance plug having longitudinal retainers: Described herein is a disk drive balance plug that includes a substantially cylindrical body defining a first end, a second end, a substantially cylindrical outer surface, and a plug central axis. The balance plug also preferably includes at least one protrusion extending along the cylindrical outer surface between the first... Agent: Western Digital Technologies, Inc.

20120002325 - Magnetic recording head and magnetic recording apparatus: According to one embodiment, a magnetic recording head includes a main magnetic pole generating a recording magnetic field in a magnetic recording medium, a return yoke paired with the main magnetic pole, and a spin torque oscillator interposed between the main magnetic pole and the return yoke and including a... Agent: Kabushiki Kaisha Toshiba

20120002326 - Perpendicular magnetic write head and method of manufacturing the same: A perpendicular magnetic write head includes: a magnetic pole; a pair of nonmagnetic side gap layers provided on both sides in a track-width direction of the magnetic pole; a nonmagnetic trailing gap layer provided on a trailing side of the magnetic pole; a magnetic shield layer so provided as to... Agent: Sae Magnetics (h.k.) Ltd.

20120002327 - Head and disk device with the same: According to one embodiment, a head includes a slider and a head section on the slider. A supporting surface of the slider includes a leading step in an inflow side of airflow, a leading pad on the leading step, a negative-pressure cavity in a downstream side of the leading pad,... Agent: Kabushiki Kaisha Toshiba

20120002328 - Head stack assembly and disk drive with the same: According to an embodiment, a head stack assembly includes an arm including a swaged seat surface with swaged hole, a load beam supporting a head, and a baseplate secured to a proximal end portion of the load beam, including an annular protrusion secured to the swaged hole of the arm... Agent: Kabushiki Kaisha Toshiba

20120002329 - Suspension assembly having a microactuator grounded to a flexure: Disclosed is a suspension assembly for a disk drive that includes: a mounting plate having a through-hole extending from a top-side of the mounting plate to a bottom-side of the mounting plate; a microactuator mounting structure formed in the mounting plate; a microactuator mounted in the microactuator mounting structure; and... Agent: Western Digital (fremont), LLC

20120002330 - Cpp-type magnetoresistive element including spacer layer: An MR element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer disposed between the first and second ferromagnetic layers. The spacer layer includes a nonmagnetic metal layer, a first oxide semiconductor layer, and a second oxide semiconductor layer that are stacked in this order. The... Agent: Tdk Corporation

20120002331 - Magnetic recording head and magnetic recording apparatus: According to one embodiment, there is provided a magnetic recording head including a main pole, and a spin torque oscillator provided adjacent to the main pole and includes an oscillation layer including a first magnetic layer and a second magnetic layer and a third magnetic layer provided closer to the... Agent: Kabushiki Kaisha Toshiba

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