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Dynamic magnetic information storage or retrieval March listing by industry category 03/10

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
03/25/2010 > patent applications in patent subcategories. listing by industry category

20100073795 - Flying height control device for magnetic head, and magnetic disk device: A flying height control device controls a flying height of a magnetic head, while preventing unnecessary execution of flying height control when read performance drops. A control circuit, which controls the flying height by controlling the heat power of a heater element of a magnetic head, checks the read performance,... Agent: Greer, Burns & Crain

20100073796 - Magnetic field sensor: A device for sensing a magnetic field is described. The device comprises first, second and third leads and a junction between the leads. The junction and leads are arranged in a plane and the junction is configured to exhibit quantum confinement in a direction perpendicular to the plane. The first... Agent: Zilka-kotab, PC- Hit

20100073797 - Storage device and method of controlling storage device: According to one embodiment, a storage device includes a target track write module and a test pattern read module. The target track write module performs a write operation on a target track, which is a predetermined track intersecting a test pattern, on a storage medium to which the test pattern... Agent: Knobbe Martens Olson & Bear LLP

20100073799 - Detecting contact between a slider and a data storage medium without a seperate contact-detection voltage source: A circuit includes a slider, a data storage medium and a contact detection circuit electrically coupled to the slider and to the data storage medium. The contact detection circuit is configured to sense an electrical current indicative of contact between the slider and the data storage medium and responsively provide... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100073798 - Systems and methods for compensating baseline wandering in perpendicular magnetic recording: Various embodiments of the present invention provide systems and methods for reducing low frequency loss in a magnetic storage device. For example, a data processing circuit is disclosed that includes a digital filter that receives a series of digital samples and provides a filtered output. The filtered output is provided... Agent: Hamilton,desanctis & Cha (lsi)

20100073801 - Magnetic recording device, control device, and magnetic recording device control method: A magnetic recording device includes: a magnetic recording medium including a write-synchronization region and a data region; a correction-value-storage unit configured to store therein a phase-correction value for correcting a phase of the write clock; a reading unit configured to read out a signal from the magnetic recording medium; a... Agent: Greer, Burns & Crain

20100073800 - Recovering servo information from a synchronous servo channel: Provided are a method, servo channel, and tape drive for recovering servo information from a synchronous servo channel. An interpolator reads samples of a servo signal obtained from a servo reader at a rate of one servo sample per clock interval, to produce up to M interpolated servo samples per... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20100073803 - Magnetic recording device and magnetic recording head drive mechanism: Provided is a magnetic recording device which can perform high density magnetic recording by simple constitution. The magnetic recording device is provided with a disc driving means for rotating a magnetic disc; a head having a heating section for heating a circular track of the magnetic disc and a recording... Agent: Sidley Austin LLP

20100073802 - Thermally assisted magnetic head having an asymmetric plasmon antenna and manufacturing method thereof: A thermally assisted magnetic head according to the present invention includes: a medium-facing surface, a main magnetic pole provided on the medium-facing surface, and a plasmon antenna provided on the medium-facing surface in the vicinity of the main magnetic pole, wherein the plasmon antenna is shaped as a triangular flat... Agent: Oliff & Berridge, PLC

20100073804 - Thin-film magnetic head having microwave magnetic exciting function and magnetic recording and reproducing apparatus: A thin-film magnetic head having microwave magnetic exciting function includes a write magnetic field production means for producing, in response to a write signal, a write magnetic field to be applied into a magnetic recording medium, and at least line conductor of a microwave radiator of a plane-structure type, formed... Agent: Frommer Lawrence & Haug LLP

20100073805 - Flying height control device for magnetic head, and magnetic disk device: A flying height control device controls a flying height of a magnetic head and reports the state of the flying height control of a magnetic disk device to a host, using self monitoring, analysis and reporting functions. A function to control a flying height by controlling the heat power of... Agent: Greer, Burns & Crain

20100073806 - Magnetic recording head and magnetic recording apparatus: It is made possible to improve the recording resolution. A magnetic recording head includes: a magnetic pole that has a first magnetic portion including an air bearing surface, and generates a write magnetic field; and a spin torque oscillator that is formed on the air bearing surface of the magnetic... Agent: Nixon & Vanderhye, PC

20100073807 - Storage device, head position detection method and control circuit: According to one embodiment, a storage device includes an area demodulator and a head position demodulator. The area demodulator demodulates a first demodulation signal and a second demodulation signal having a phase difference of 90° from a read signal by a head of an area demodulation pattern recorded on a... Agent: Greer, Burns & Crain

20100073808 - Position sensing in discrete track recording: In a particular embodiment, a storage system is disclosed that includes a discrete track media having a plurality of concentric data tracks to store data and including a respective plurality of non-magnetic regions to separate adjacent data tracks. The non-magnetic regions include encoded position information. The storage system further includes... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100073809 - X-amr assisted recording on high density bpm media: A method of writing information to an area of a bit-patterned medium, in which a magnetized probe generates a magnetic probe field at the area of bit-patterned medium to be written, applying an oriented static magnetic field, and applying an oriented microwave field at a selected frequency, resulting in the... Agent: Seagate Technology LLC

20100073810 - Encoding scheme for bit patterned media: A bit patterned media (BPM) encoded recordable medium includes a servo control field including servo bits. Each servo bit is represented by a servo bit pattern of dots and gaps on the recordable medium. In the servo bit patterns, substantially no two dots are placed immediately next to one another,... Agent: Hensley Kim & Holzer, LLC

20100073811 - Magnetic disk and magnetic disk device: A magnetic disk includes: a data recording region having first magnetic parts; the first magnetic parts being arranged in a circumferential direction in the nonmagnetic region and form tracks, and the tracks being arranged in a radial direction at a track pitch Tp; and a burst pattern region having burst... Agent: Greer, Burns & Crain

20100073812 - Fall detection device, magnetic disk device, and portable electronic apparatus: By detecting that a differentiation value of the absolute value of acceleration is lower than a negative threshold value DAth1 in a negative direction from a first stage (S1: Stationary state) where the differentiation value of the absolute value of acceleration is approximately 0, it is considered that the stage... Agent: Studebaker & Brackett PC

20100073815 - Magnetic head and magnetic disk device: A magnetic head provided on a drain end side of a head substrate constituting a head slider includes a heater, a write coil, a shield, an insulation layer between the heater and the head substrate, a thermal insulation layer whose thermal conductivity is lower than the insulation layer and a... Agent: Greer, Burns & Crain

20100073816 - Magnetic head and method of manufacturing the same, linear tape drive apparatus, and magnetic recording and reproduction method: m

20100073813 - Perpendicular magnetic recording media having a cap layer formed from a coptcr alloy: Perpendicular magnetic recording (PMR) media and methods of fabricating PMR media are described. The PMR media includes, among other layers, a perpendicular magnetic recording layer and a cap layer that are exchange coupled. The magnetic recording layer and the cap layer may be exchange coupled through direct contact, or may... Agent: Duft Bornsen & Fishman, LLP

20100073814 - Writing and reading multi-layer continuous magnetic recording media: A method and apparatus for writing magnetization states in a pair of magnetic layers of a multi-layer continuous magnetic recording medium and a method and apparatus for reading readback pulse shapes representing a magnetization state transition between such written magnetization states of a two-layer continuous magnetic recording medium. Writing each... Agent: Schmeiser, Olsen & Watts

20100073817 - Plasmon antenna for thermally assisted magnetic head: A plasmon antenna of the present invention is used in a thermally assisted magnetic head that includes: a medium-facing surface set, parallel to an XY plane; a magnetic pole for writing, extending toward the medium-facing surface, and a plasmon antenna comprising a pair of small metal bodies irradiated with excitation... Agent: Oliff & Berridge, PLC

20100073818 - Recording tape cartridge: The present invention provides a recording tape cartridge that when loaded in a drive device, generation of abrasion dust from a case can be restrained. The recording tape cartridge includes: a case in which a single reel with a recording tape being wound thereon is rotatably accommodated; a first region... Agent: Solaris Intellectual Property Group, PLLC

20100073819 - Servo patterns for self-assembled island arrays: Servo patterns and associated methods of fabricating servo patterns are described. For patterned storage media, data sectors and servo sectors may be patterned using self-assembly. In one embodiment, self-assembly is used to form a first array of islands and a second array of islands in servo sectors that are track-wise... Agent: Duft Bornsen & Fishman, LLP

20100073820 - Mounting assembly: An apparatus includes an inner component, an outer component; and a tolerance ring located between the inner and outer components to provide an interference fit there between. The tolerance ring includes a strip of material having a plurality of radially extending projections. The strip of material is curved into a... Agent: Larson Newman & Abel, LLP

20100073821 - Magnetic disk apparatus: A magnetic disk apparatus includes a magnetic disk, a spindle motor for rotation of the magnetic disk, and a slider formed with a magnetic head for information reading or writing with respect to the magnetic disk. The slider is arranged to float above the surface of the magnetic disk when... Agent: Greer, Burns & Crain

20100073822 - Magnetic head assembly and magnetic disk device: A magnetic head assembly includes: a slider; an actuator disposed on an end face of the slider; and a magnetic head unit connected to the actuator. The actuator has a structure in which multiple electrodes are arranged in a piezoelectric body, and is driven in d33 mode. In other words,... Agent: Greer, Burns & Crain

20100073823 - Piezoelectric actuator, head slider and magnetic disk drive: A piezoelectric actuator includes a piezoelectric body; a first and a second electrode for applying an electric field to the piezoelectric body in order to polarize the piezoelectric body in a first direction at an elevated temperature, at least one of the first and the second electrode including a material... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20100073824 - Head suspension: p

20100073825 - Head suspension:

20100073826 - Magnetic head having reduced cost electrostatic discharge shunt: A method for manufacturing a magnetic head with an electrostatic discharge resistor for preventing electrostatic discharge damage to magnetic head. The electrostatic discharge resistor is formed by a processes that saves manufacturing time and cost by forming resistor in the same deposition and patterning steps used to form the magnetoresistive... Agent: Zilka-kotab, PC- Hit

20100073828 - Tmr device with novel free layer: A TMR sensor with a free layer having a FL1/FL2/FL3 configuration is disclosed in which FL1 is FeCo or a FeCo alloy with a thickness between 2 and 15 Angstroms. The FL2 layer is made of CoFeB or a CoFeB alloy having a thickness from 2 to 10 Angstroms. The... Agent: Saile Ackerman LLC

20100073827 - Tmr device with novel free layer structure: A TMR sensor that includes a free layer having at least one B-containing (BC) layer made of CoFeB, CoFeBM, CoB, COBM, or CoBLM, and a plurality of non-B containing (NBC) layers made of CoFe, CoFeM, or CoFeLM is disclosed where L and M are one of Ni, Ta, Ti, W,... Agent: Saile Ackerman LLC

  
03/18/2010 > patent applications in patent subcategories. listing by industry category

20100067134 - Adaptive track shape control during self servo-write: In a method for implementing track shape control during a self servo-write process, an error in a targeted path for writing servo data onto a first track of a disk is detected. The error is correlated with a second error for a targeted path in a previously written track of... Agent: Hitachi C/o Wagner Blecher LLP

20100067133 - Command suspension in response, at least in part, to detected acceleration and/or orientation change: In an embodiment, an apparatus is provided that may include circuitry to, in response at least in part to detected change in at least one of acceleration and orientation of storage, request suspension of at least one command currently stored in at least one pending command queue that is intended... Agent: The Law Offices Of Christopher K. Gagne C/o Cpa Global

20100067135 - Inspection apparatus and inspection method of magnetic disk or magnetic head: The present invention is designed to support plural servo patterns by setting a portion of the information of the servo pattern as a detection pattern, comparing the demodulated pattern of the portion of the information with the detection pattern, and controlling an operation timing of a test according to a... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100067136 - System including a hard disk drive and stray magnetic field sensor and associated method: A system includes a host device and a disk drive interfaced with the host device are described as well as an associated method. The disk drive includes a magnetic media for storing information using an actuator arrangement to perform a data access by moving at least one head proximate to... Agent: Workman Nydegger 1000 Eagle Gate Tower

20100067137 - Managing data storage media and multiple cartridge memories of a data storage cartridge: A data storage cartridge comprises data storage media configured to store data for read and/or write access, wherein the data may be arranged in a plurality of partitions; and a plurality of cartridge memories. A control system, for example of a data storage drive, is configured to allocate at least... Agent: John H. Holcombe IBM Corporation,IPLaw Dept.

20100067139 - Adjusting read heads based on misregistration calculated from servo patterns: Provided are a method, storage controller, and tape drive for adjusting read heads based on misregistration calculated from servo patterns. A plurality of first read heads read a plurality of servo patterns on a storage medium. A determination is made from the read servo patterns a skew at which the... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20100067138 - Variable spindle speed for ramp unload: In a particular embodiment, a controller is adapted to control a spindle motor that controls rotation of at least one rotatable disc of a storage device. The controller is adapted to increase a spindle speed associated with the spindle motor to an unload spindle speed that is greater than an... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100067140 - Disk-drive read/write head retraction velocity control: One embodiment of the invention includes a voice coil motor (VCM) drive system. The system includes a VCM configured to move a read/write head across a magnetic disk in response to a current flow through the VCM. The system also includes a VCM output stage configured to direct the current... Agent: Texas Instruments Incorporated

20100067141 - Magnetic recording medium, method of manufacturing magnetic recording medium, and magnetic recording/reproducing apparatus: The present invention provides a magnetic recording medium that has sufficient recording/reproducing characteristics and good write characteristics and can correspond to high recording density, and a method of manufacturing the same. A magnetic recording medium 1 includes a plurality of magnetic recording patterns 2 that is magnetically separated from each... Agent: Sughrue Mion, PLLC

20100067142 - Phase servo patterns for bit patterned media: A recordable medium according to some embodiments includes a servo control field having a bit patterned media (BPM) pattern. The pattern includes a plurality of isolated magnetic islands or dots arranged in a down-track orientation and in a cross-track orientation. A phase of dots arranged on the medium in the... Agent: Hensley Kim & Holzer, LLC

20100067143 - Magnetic disk apparatus: A magnetic disk apparatus includes a housing, a rotatable magnetic disk arranged in the housing, a nitrogen separation film module for separating nitrogen from air outside the housing, a nitrogen introduction path for guiding nitrogen from the nitrogen separation film module into the housing, and a negative pressure generator for... Agent: Greer, Burns & Crain

20100067144 - Magnetic recording medium, magnetic recording and reproducing apparatus, and method for manufacturing magnetic recording medium: The magnetic recording medium includes: a substrate; a recording layer formed in a predetermined concavo-convex pattern over the substrate, the recording layer including recording elements formed as convex portions of the concavo-convex pattern; a filling material disposed in a concave portion between the recording elements; and a lubricant disposed over... Agent: Oliff & Berridge, PLC

20100067145 - Servo patterns for bit patterned media with multiple dots per servo period: A servo control field on a recordable medium includes a bit patterned media (BPM) pattern including a plurality of dots arranged in a down-track orientation and in a cross-track orientation, wherein the dots comprise a plurality of dot composites. Each of the dot composites includes a plurality of dots. A... Agent: Myers Bigel Sibley & Sajovec, P.A.

20100067146 - Magnetic head slider: A magnetic head slider floats by a flow of air formed by rotation of a magnetic recording medium. The magnetic head slider includes: a slider body arranged that faces a surface of the magnetic recording medium and that floats by the flow of air; an insulating layer that is provided... Agent: Greer, Burns & Crain

20100067147 - Method and apparatus for a hard disk drive including a balanced micro-actuator: This application discloses a hard disk drive, a head stack assembly, and a head gimbal assembly, each including a micro-actuator hinge configured to position a slider over a rotating disk surface with greater stroke sensitivity while reducing bending perpendicular to the disk surface. The micro-actuator hinge includes at least one... Agent: Gss Law Group

20100067148 - Thin film magnetic head having a pair of magnetic layers whose magnetization is controlled by shield layers: A thin film magnetic head comprises an MR laminated body that has first and second magnetic layers, a nonmagnetic middle layer, and the first and second magnetic layers and the nonmagnetic middle layer are laminated to make contact with each other in respective order. First and second antiferromagnetic layers are... Agent: Posz Law Group, PLC

20100067149 - System, method and apparatus for onset magnetic oxide layer for high performance perpendicular magnetic recording media: Perpendicular magnetic recording media has been enhanced by controlling the initial growth of magnetic oxide layers and increased magnetic isolation between the grains in the initial magnetic layer. An onset magnetic oxide layer is sputter deposited in an argon-oxygen gas mixture between the main CoPtCr-oxide magnetic layers and the underlying... Agent: Larson Newman & Abel, LLP

20100067150 - Method of utilizing a solder reflow channel in the formation of a hard disk drive: A method of utilizing a solder reflow channel in the formation of a hard disk drive is disclosed. The method provides a first hard disk drive component having at least one solder reflow channel, the at least one solder reflow channel for retaining a predeposited solder material. The solder reflow... Agent: Hitachi C/o Wagner Blecher LLP

20100067151 - Electrical connecting structure for piezoelectric element, piezoelectric actuator, head suspension, and electrical connecting structure for conductive part: m

  
03/11/2010 > patent applications in patent subcategories. listing by industry category

20100061004 - Compensation for different transducer translation path geometries: Method and apparatus for compensating for differences in translation path geometries of transducers used to access a data storage medium. A compensation profile is generated in relation to radial error between a first translation path geometry of a first transducer and a different, second translation path geometry of a second... Agent: Fellers, Snider, Blankenship, Bailey & Tippens, PC

20100061002 - Magnetic head inspection method, magnetic head inspection device, and magnetic head manufacturing method: A magnetic head inspection device inspects the write track width of a thin film magnetic head in a phase as early as possible during the manufacturing process. A recording signal (excitation signal) is input from bonding pads to the thin film magnetic head in a rowbar, and the magnetic field... Agent: Jianq Chyun Intellectual Property Office

20100061003 - Rotary disk eccentricity measurement method, rotary encoder, and rotary member control device: An eccentricity measurement method of measuring the eccentricity between a center of a connection portion of a rotary disk of a rotary encoder connected to a rotary shaft of a rotary member, and a center of a scale provided at the periphery of the rotary disk. The method includes forming,... Agent: Cooper & Dunham, LLP

20100061005 - High speed digital signaling apparatus and method using reflected signals to increase total delivered current: A signaling apparatus and method are described that use reflected signals to increase the total current delivered to a receiver. Dynamic source-side transmission line termination control is employed to generate reflected signals that constructively add to a nonreflected signal to enhance the signal at the receiver. Switching controls selectively connect... Agent: Marlin Knight

20100061006 - Managing data storage media and multiple cartridge memories of a data storage cartridge: A data storage cartridge comprises data storage media configured to store data for read and/or write access, wherein the data may be arranged in a plurality of partitions; and a plurality of cartridge memories. A control system, for example of a data storage drive, is configured to allocate at least... Agent: John H. Holcombe IBM Corporation,IPLaw Dept.

20100061007 - Storage device and control circuit: According to one embodiment, a storage device includes a rotary actuator, vibration detectors, an analog operation circuit, an analog-to-digital converter, and a rotation vibration compensation controller. The rotary actuator positions a head with respect to a storage medium to perform reading or writing. The vibration detectors are located substantially on... Agent: Greer, Burns & Crain

20100061008 - Magnetic disk drive: A magnetic disk drive includes a switching regulator configured to generate an output voltage, and a magnetic disk control unit that receives the output voltage as a power supply and performs data write and read operations on a magnetic recording medium. The switching regulator includes a voltage conversion part configured... Agent: Greer, Burns & Crain

20100061009 - Magnetic disk device: A magnetic disk device includes a magnetic storage medium including a surface coated with a first coating layer material having an elementary composition, and a magnetic head including a surface coated with a second coating layer material having the elementary composition.... Agent: Greer, Burns & Crain

20100061011 - Method for pre-heating hard disk drive of computer device: Disclosed is a method for pre-heating a hard disk drive of a computer device, wherein a temperature sensor and a heater are arranged at preset locations outside the computer device. The temperature sensor detects an external temperature of the hard disk drive, which is compared with an activation temperature threshold... Agent: Rosenberg, Klein & Lee

20100061010 - Particle diverter for hard disc drive: Bases for data storage systems are disclosed. Some embodiments of the bases are used in hard disc drives. Some embodiments include particle diverters. Certain embodiments of the particle diverters include a particle diverter opening adjacent to an actuator region of a hard disc drive.... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100061012 - Ramp for magnetic disc apparatus: For cushioning a shock to prevent problems such as a reading error, a ramp for a magnetic disc apparatus is made of a resin material for forming a ramp main body and a material having higher rigidity than the resin material, disc facing surfaces in the disc insertion portion for... Agent: Harness, Dickey & Pierce, P.L.C

20100061013 - Ceramic sinter, magnetic head substrate using the same, magnetic head and recording medium drive unit: The ceramic sintered body according to the present invention contains Al2O3 crystal grains, internal TiC crystal grains existing in the Al2O3 crystal grains and external TiC crystal grains other than the internal TiC crystal grains. The Al2O3 crystal grains and the external TiC crystal grains retain stress caused by the... Agent: Hogan & Hartson L.L.P.

20100061014 - Magnetic reproducing element using anomalous hall effect and magnetic head using the same: According to one embodiment, magnetic reproducing element for detecting a magnetic field from a magnetic recording medium comprises a sensor film including a perpendicular magnetization film having a magnetization easy axis in a direction perpendicular to a film plane, wherein magnetization in the sensor film tilts upward or downward in... Agent: Zilka-kotab, PC- Hit

20100061015 - Magnetic disk device and magnetic head: A magnetic disk device includes: a magnetic disk that includes a magnetic recording layer exhibiting Ising ferromagnetism; a recording magnetic pole that includes a pair of tip magnetic poles that apply a recording magnetic field to an area of the magnetic recording layer; and an auxiliary magnetic pole that includes... Agent: Greer, Burns & Crain

20100061016 - Method to make an integrated side shield pmr head with non conformal side gap: A non-conformal integrated side shield structure is disclosed for a PMR write head wherein the sidewalls of the side shield are not parallel to the pole tip sidewalls. Thus, the side gap distance between the leading pole tip edge and side shield is different than the side gap distance between... Agent: Saile Ackerman LLC

20100061017 - Recording tape cartridge: A recording tape cartridge comprising a casing that rotatably accommodates a single reel on which recording tape is wound; a shielding component that slides substantially along a side wall of the casing to open or block off an opening that is formed in the side wall for pulling out the... Agent: Solaris Intellectual Property Group, PLLC

20100061018 - Magnetic recording disk drive with patterned media and optical system for clocking write data: A patterned-media magnetic recording disk drive uses an optical system for accurately clocking the write data. The disk has concentric data tracks patterned into discrete magnetizable data islands with nonmagnetic spaces between the islands. As the disk rotates, a radiation source directs near-field radiation to the islands and spaces, and... Agent: Thomas R. Berthold

20100061019 - Magnetic storage system with read during write: A magnetic storage system includes a magnetic storage medium and a transducer positioned adjacent the magnetic storage medium. The transducer has a reader positioned adjacent writer and a reader bias coil located on the transducer. Transducer circuitry is configured to apply a bias signal to the reader bias coil during... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100061020 - Flexure, head suspension assembly including the flexsure, and hard disk drive including the head suspension assembly: A flexure suppresses the vibration of a slider bearing a magnetic read/write head. The flexure has a cross beam, a slider support that supports the slider and is in turn supported like a cantilever by the cross beam but so as to be elastic, a rear vibration absorber protruding from... Agent: Volentine & Whitt PLLC

20100061021 - Storage device, head support mechanism and method of manufacturing thereof: A storage device includes a head that reads and writes data from and to a recording medium and a head support mechanism that supports the head. The head support mechanism includes a first arm member that holds the head, a second arm member that supports the first arm member, a... Agent: Greer, Burns & Crain

20100061022 - System and method of current shaping control for retract: A system for implementing current shaping for retract of a voice coil motor (VCM) includes drive circuitry coupled to drive the VCM according to a logic state of the system. Current shaping circuitry is configured to temporarily decrease the bandwidth of a VCM transconductance loop in response to a control... Agent: Texas Instruments Incorporated

20100061023 - Magnetic head device and magnetic disk drive apparatus with the magnetic head device: A magnetic head device includes a magnetic head section having a first free layer with a magnetization orientation that is not previously defined but changes depending upon only external magnetic field applied, a second free layer with a magnetization orientation that is not previously defined but changes depending upon only... Agent: Frommer Lawrence & Haug LLP

  
03/04/2010 > patent applications in patent subcategories. listing by industry category

20100053787 - Systems and methods for on-the-fly write pre-compensation estimation: Various embodiments of the present invention provide systems and methods for write pre-compensation. For example, various embodiments of the present invention provide systems for on-the-fly estimation of write pre-compensation values. Such systems include a magnetic storage medium, a read/write head assembly disposed in relation to the magnetic storage medium, and... Agent: Hamilton,desanctis & Cha (lsi)

20100053789 - magnetic field sensor circuit: A magnetic field sensor circuit comprises a first magneto-resistive sensor (Rx) which senses a first magnetic field component in a first direction to supply a first sense signal (Vx). A first flipping coil (FC1) applies a first flipping magnetic field with a periodically changing polarity to the first magneto-resistive sensor... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20100053792 - Apparatus for and method of measuring motion characteristics of head gimbal assembly: An apparatus correctly measures motion characteristics a head gimbal assembly exhibits when turned in a radial direction of a hard disk. The apparatus includes an assembly support to fixedly support the head gimbal assembly on a center axis that corresponds to a rotation axis around which the head gimbal assembly... Agent: Jordan And Hamburg LLP

20100053790 - Hard disk inspection apparatus and method, as well as program: A hard disk inspection apparatus comprises an image pickup device which includes an inspection region portion of a disk surface including an edge of a hard disk, and which picks up an image of reflected light from the inspection region portion, an edge detection processing device which detects an edge... Agent: Young & Thompson

20100053788 - Method of measuring variation in floating amount and magnetic storage apparatus: A method for measuring a variation in the floating amount of a magnetic head comprising: measuring the ambient temperature which is a temperature of the magnetic storage apparatus; reading a signal recorded in the magnetic recording medium; measuring a signal value which is a value related to a signal read... Agent: Greer, Burns & Crain

20100053791 - Storage device, recording medium evaluation device, and recording medium evaluation method: According to one embodiment, a storage device that reads data from and writes data to a recording medium, which is rotationally driven by a motor, by a head, includes a ground disconnector, a motor voltage application module, and a Coulomb force detector. The ground disconnector disconnects a connection between the... Agent: Greer, Burns & Crain

20100053793 - Systems and methods for adaptive write pre-compensation: Various embodiments of the present invention provide systems and methods for write pre-compensation. For example, various embodiments of the present invention provide methods for modifying magnetic information transfer. The methods include retrieving magnetically represented data from a storage medium, and converting the magnetically represented data to a series of data... Agent: Hamilton,desanctis & Cha (lsi)

20100053794 - Thermally assisted magnetic recording method, magnetic recording head, magnetic recording medium, and magnetic recording apparatus: In a thermally assisted magnetic recording method, tunneling current is applied from a tunneling current wiring arranged on a magnetic recording head configured to fly above a magnetic recording medium having a bit pattern formed of recording bits separated from one another by an insulator to a desired recording bit... Agent: Greer, Burns & Crain

20100053795 - Magnetic recording and reproducing apparatus having a magnetic read head with a spin-torque oscillator: A magnetic recording and reproducing apparatus includes a magnetic head that has a spin-torque oscillator and a magnetic disk and the spin-torque oscillator detects a magnetic field from the magnetic disk and outputs a signal. A criterion used to determine the rotational speed of the magnetic disk, the frequency shift... Agent: Ohlandt, Greeley, Ruggiero & Perle, LLP

20100053796 - Disk drive including a delay circuit to provide a delayed reset signal: A disk drive including a delay circuit to provide a delayed reset signal is disclosed. The disk drive includes a head to perform write and read operations to and from a disk and a disk controller that is coupled to the head to control the write and read operations performed... Agent: Western Digital Technologies, Inc. Attn: Lesley Ning

20100053798 - Information recording and reproducing apparatus, information recording and reproducing system, information processing apparatus and information reproducing apparatus: An information recording and reproducing apparatus 1 having a high efficiency of information transfer includes one or more recording media forming a plurality of recording surfaces, a plurality of heads respectively disposed on the recording surfaces, a first actuator for supporting the heads and moving the heads uniformly, a plurality... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100053797 - Method for manufacture of magnetic recording medium and magnetic recording and reproduction device: A method for manufacturing a magnetic recording medium includes the steps of depositing a magnetic layer on at least one of surfaces of a nonmagnetic substrate and injecting atoms partially in the magnetic layer, thereby demagnetizing parts having admitted the injected atoms or imparting amorphousness thereto, to form a magnetically... Agent: Sughrue Mion, PLLC

20100053799 - Method for estimating position error gain for hard disk drives: A hard disk drive with a controller that determines a position error signal gain. The position error signal gain is determined from a total servo loop gain and a function that is defined by a slope of a line of A and B servo bits measured at N off-track positions.... Agent: Irell & Manella LLP

20100053800 - Phase detector that compensates for frequency variation induced bias in phases of servo burst fields: In a servo control loop, phase detection between a clock signal and servo burst fields on a movable storage media is carried out with compensation for the effects of frequency variation in the timing of servo burst fields.... Agent: Myers Bigel Sibley & Sajovec, P.A.

20100053801 - Device and method for processing data recorded on a tape medium: A device and method are disclosed for processing data recorded on a tape medium. The device comprises a first control part controls a read head to read specific data recorded in a first area among data recorded in a first format on the tape medium. The device further comprises a... Agent: Ibm Corporation

20100053802 - Low power disk-drive motor driver: One embodiment of the invention includes a disk-drive motor control system. The system comprises a seek mode power supply configured to provide a first voltage corresponding to a seek mode associated with a disk-drive voice control motor (VCM). The system also includes a track mode power supply configured to provide... Agent: Texas Instruments Incorporated

20100053803 - Breadth spreading placement of data storage cartridges in multi-cartridge deep slot cells of an automated data storage library: In an automated data storage library having a plurality of multi-cartridge deep slot cells, each configured to store a plurality of data storage cartridges arranged in sequential order of tiers from front to rear, and having accessor(s) configured to selectively extract, place and transport cartridges with respect to the cells;... Agent: John H. Holcombe IBM Corporation,IPLaw Dept.

20100053804 - Vibration damper for actuator assembly: The present disclosure provides a vibration damper for an actuator assembly. One exemplary embodiment relates to an actuator assembly including a magnetic assembly configured to produce a magnetic field and an actuator movable relative to the magnetic assembly in response to the magnetic field, wherein the actuator includes a vibration... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100053805 - Hard disk drive and method of manufacture: A method of manufacturing a hard disk drive includes measuring an imbalance value including an imbalance position with respect to a rotation center of a rotation shaft of the hub, with respect to each of a plurality of disks installed on a hub of a spindle motor to rotate the... Agent: Volentine & Whitt PLLC

20100053806 - Disc drive apparatus: A disc drive apparatus comprises: a spindle motor 20 for hold a disc 2 and for rotate it; an optical head 7 for conducting either one of recording or reproducing of information onto/from the disc; a driver unit for moving the optical head in a radial direction of the disc;... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100053807 - Lubricated limiter for fluid dynamic bearing motor: A component for restricting relative movement of a rotor and a shaft is disclosed. A motor may include a shaft and a rotor, where the rotor is disposed for relative rotation with respect to said shaft. A component is operable to restrict relative movement of the rotor and the shaft,... Agent: Seagate Technology LLC Intellectual Property Department

20100053809 - Embedded servo on track for bit-patterned media (bpm): A method of making a disc for a computer disc drive and a disc made in accordance with the same. The disc includes a deposited magnetic layer of a thin film medium over a disc-shaped substrate. A master pattern having a plurality of tracks is recorded on the disc. Each... Agent: Seagate Technology LLC

20100053810 - Magnetic head: A system in one embodiment includes first and second modules, each module having a substrate, a closure, and a gap situated therebetween, the gap comprising transducers selected from readers and writers; wherein the closures face each other, wherein the closure and the substrate of each module form a flat tape... Agent: Zilka-kotab, PC- Ibm

20100053811 - Magnetic storage apparatus and magnetic storage medium: A magnetic storage apparatus includes a magnetic storage medium including a recording layer, and a backing layer including a portion having a Curie temperature lower than that of the recording layer, a recording head that generates a magnetic field for recording from a side of the recording layer opposite to... Agent: Greer, Burns & Crain

20100053808 - Nanometer scale magnetization: Magnetic heads for perpendicular magnetic recording on magnetic recording media are provided.... Agent: Knobbe Martens Olson & Bear LLP

20100053812 - Magnetic head for recording magnetic data by changing the magnetization direction of a magnetic recording layer of a magnetic medium: According to one embodiment, a magnetic head for recording magnetic data by changing the magnetization direction of a magnetic recording layer of a magnetic medium comprises a magnetic pole for generating a magnetic field to change the magnetization direction of the magnetic recording layer, and a facing electrode pair for... Agent: Zilka-kotab, PC- Hit

20100053813 - Method for manufacturing magnetic recording medium and magnetic recording and reproducing apparatus: A method for manufacturing a magnetic recording medium (30) having magnetically separate magnetic recording patterns on at least one surface of a nonmagnetic substrate (1), includes the steps of forming a magnetic layer (2) on the nonmagnetic substrate, forming a mask layer (3) on the magnetic layer, forming a resist... Agent: Sughrue Mion, PLLC

20100053814 - Magnetic storage medium and storage apparatus: A magnetic storage medium includes: burst lines each including magnetic bodies placed in a nonmagnetic body in a predetermined repetitive pattern repeated in the radial direction, the burst lines arranged in the circumferential direction at predetermined intervals, wherein the phases of the predetermined repetitive patterns are shifted in the radial... Agent: Greer, Burns & Crain

20100053815 - Glide head and magnetic storage device: A glide head includes a slider configured to float by airflow generated by rotation of a recording medium and detects a contact between the recording medium and the slider. The slider includes a floating rail. The floating rail includes a surface facing the recording medium and including an obtuse-angled corner.... Agent: Greer, Burns & Crain

20100053816 - Head-slider, head-arm assembly including the head-slider, and hard-disk drive including the head-arm assembly including the head-slider: A head-slider which is configured to fly above a magnetic-recording disk. The head-slider includes a disk-facing side, which faces the magnetic-recording disk. The disk-facing side includes a plurality of surfaces including at least: a step bearing surface; a rail surface, which protrudes toward the magnetic-recording disk and is configured to... Agent: Hitachi C/o Wagner Blecher LLP

20100053817 - Coated magnetic head and methods for fabrication thereof: In one general embodiment, a magnetic head includes a module having a substrate and a gap, the gap having an array of transducers therein, wherein the gap is recessed from a plane extending across a tape bearing surface side of the substrate; and a coating of aluminum oxide above at... Agent: Zilka-kotab, PC- Ibm

20100053818 - Current perpendicular to plane differential magnetoresistance read head design using a current confinement structure proximal to an air bearing surface: A current to perpendicular to plane (CPP) differential magnetoresistance (DMR) read head using current confinement proximal to an air bearing surface (ABS) is disclosed. The CPP DMR read head includes a first electrically conductive lead, a first MR sensor formed on the first lead, and a non-magnetic electrically conductive spacer... Agent: Duft Bornsen & Fishman, LLP

20100053819 - Thin film magnetic head, magnetic head slider, head gimbal assembly, head arm assembly, magnetic disk device and method of manufacturing thin film magnetic head: The invention is devised to provide a method of manufacturing a thin film magnetic head including a magnetoresistive element having higher reading performance. In manufacturing the thin film magnetic head, after forming an MR element 15, a pair of magnetic domain controlling layers 16 are formed by stacking a buffer... Agent: Oliff & Berridge, PLC

20100053821 - Cpp structure magnetoresistive head: According to one embodiment, a magnetoresistive head has a magnetoresistive sensor film between a lower shield layer and an upper shield layer. The magnetoresistive sensor film is formed by stacking at least a pinning layer, a first ferromagnetic layer, an intermediate layer, and a second ferromagnetic layer, in which a... Agent: Zilka-kotab, PC- Hit

20100053820 - Magnetoresistive element including a pair of ferromagnetic layers coupled to a pair of shield layers: A magnetoresistive element includes first and second shield layers, an MR stack disposed therebetween, a first hard magnetic layer for setting the magnetization direction of the first shield layer, and a second hard magnetic layer for setting the magnetization direction of the second shield layer. The MR stack includes a... Agent: Oliff & Berridge, PLC

20100053824 - Magnetoresistive element: A magnetoresistive element includes: a free layer made of a ferromagnetic material, the free layer configured to change the direction of magnetization under the influence of an external magnetic field; an insulating layer overlaid on the free layer, the insulating layer made of an insulating material; an amorphous reference layer... Agent: Greer, Burns & Crain

20100053823 - Magnetoresistive element and method of manufacturing the same: A magnetoresistive element includes a stack formed by sequentially stacking a first fixed layer in which a magnetization direction is fixed, a first nonmagnetic layer, a free layer in which a magnetization direction is changeable, a second nonmagnetic layer, and a second fixed layer in which a magnetization direction is... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100053822 - Stram cells with ampere field assisted switching: A magnetic tunnel junction cell that has a ferromagnetic pinned layer, a ferromagnetic free layer, and a non-magnetic barrier layer therebetween. The free layer has a larger area than the pinned layer, in some embodiments at least twice the size of the pinned layer, in some embodiments at least three... Agent: Campbell Nelson Whipps, LLC

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