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Dynamic magnetic information storage or retrieval May archived by USPTO category 05/10

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.
  
05/27/2010 > patent applications in patent subcategories. archived by USPTO category

20100128376 - Magnetic disk drive having assisted recording and methods of recording data thereto: In one embodiment, a magnetic disk drive includes a magnetic disk, a head slider for flying above the spinning magnetic disk, a pattern analyzer for analyzing a data pattern of data to be recorded on the magnetic disk to determine a recording current reversal timing and a recording assistance area... Agent: Zilka-kotab, PC- Hit

20100128377 - Electric field assisted magnetic recording: We describe a system for electric field assisted magnetic recording where a recordable magnetic medium includes a magnetic recording layer of high coercivity and vertical magnetic anisotropy that is adjacent to an electrostrictive layer which can be placed in a state of stress by a electric field or which is... Agent: Saile Ackerman LLC

20100128378 - Method for manufacturing magnetic recording medium, magnetic recording medium, and magnetic recording-reproducing apparatus: A magnetic recording medium which does not easily cause a material containing Fe or Co to corrode is disclosed. The method for manufacturing a magnetic recording medium 122 includes a process of forming a magnetic layer 30 on a non-magnetic substrate 10, a process of forming a recessed area 65... Agent: Sughrue Mion, PLLC

20100128379 - Guide assembly for reducing lateral tape motion in a tape drive: A guide assembly (22) for guiding movement of a tape (26) past a head assembly (16) in a tape drive (10) includes a rotatable roller (36A) and a non-rotatable tape guide (38). The rotatable roller (36A) and the tape guide (38) each guides the tape (26) along the tape path... Agent: James P. Broder Roeder & Broder LLP

20100128383 - Disk drive and method for controlling clearance in the disk drive: A disk drive. The disk drive includes a disk configured to store data, a slider configured to fly in proximity to the disk, and a magnetic-recording head on the slider configured to access the disk. The disk drive also includes a moving mechanism configured to support and to move the... Agent: Hitachi C/o Wagner Blecher LLP

20100128382 - Magnetic recording device and magnetic recording method thereof: A magnetic recording device according to one embodiment includes a magnetic recording medium having a magnetic recording layer; a recording element positioned on a head slider; an assistance element for supplying assistance energy to an area on the recording layer to which a recording magnetic field generated by the recording... Agent: Zilka-kotab, PC- Hit

20100128384 - Magnetic recording medium and magnetic recording apparatus: According to one embodiment, a magnetic recording medium to which a signal is recorded by reversing magnetization of a magnetic body, includes: a servo region to which a servo signal is written; a data region configured to include a magnetic region of a track to which data is written, the... Agent: Knobbe Martens Olson & Bear LLP

20100128381 - Method and system for reducing power consumption by command selection in a hard disk drive: A system and method for providing a command queue selection scheme by selecting commands by giving preference to commands based on the power consumption characteristics the command. In one embodiment the selection scheme involves calculating the value of the cost of energy saving associated with the access of a command... Agent: Hitachi C/o Wagner Blecher LLP

20100128380 - Ses assisted write fly height monitor and control: A hard disk drive that includes a disk, and a head that is separated from the disk by a flying height. The disk drive also includes a circuit that determines the flying height from a signal read during a write operation of the drive. The circuit performs a calibration routine... Agent: Irell & Manella LLP

20100128385 - Information storage device and computer product: According to one embodiment, an information storage device includes a recording/reproducing head, a positioning controller, a position detector, a storage module, and a position error detector. The position detector detects the position of the recording/reproducing head. The storage module stores servo control filters. The position error detector generates a new... Agent: Greer, Burns & Crain

20100128386 - Reducing effect of frequency acquisition error in a position error signal responsive to split servo burst patterns: In a servo control loop, servo burst signals that are read from a plurality of servo burst patterns that include a split servo burst pattern contain frequency acquisition error. The frequency acquisition error is at least partially removed to generate a frequency acquisition error compensated position error signal (PES).... Agent: David K. Lucente Seagate Technology LLC Intellectual Property Dept. - Col2lgl

20100128387 - Hard drive temperature control: A Hard Disk Drive (HDD) temperature control system includes an HDD including a temperature sensor. An Operating System (OS) driver is coupled to the temperature sensor and includes a temperature data retrieval engine that is operable to retrieve HDD temperature data from the temperature sensor and transmit the HDD temperature... Agent: Haynes And Boone, LLPIPSection

20100128388 - Magnetic and encapsulation contamination control for disk drives: A disk device with disk contamination control having a spindle for rotating at least one disk. A spindle hub located on the spindle. A disk clamp for clamping the at least one disk on the hub. A magnetic clamp seal magnetically and removably attached to the disk clamp wherein the... Agent: Hitachi C/o Wagner Blecher LLP

20100128389 - Robotic end-effector for component center alignment and assembly: A robotic end-effector for high-speed precision alignment and assembly of components has a holding device operable for temporarily holding a second component. The second component is to be aligned and assembled to a first component. The robotic end-effector has a course alignment device operable for locating the holding device with... Agent: Hitachi C/o Wagner Blecher LLP

20100128390 - Method for forming magnetic layer, magnetic recording medium, and magnetic recording and reproducing apparatus: The invention provides a method of forming a magnetic layer with stable magnetic properties and stable recording-and-reproducing properties, by uniformizing the distribution of oxygen radical concentration upon reactive sputtering, and thereby uniformizing the concentration of oxygen to be taken into the magnetic layer along the plane direction. That is, the... Agent: Sughrue Mion, PLLC

20100128391 - Perpendicular recording media having an exchange-spring structure: A recording medium providing improved writeability in perpendicular recording applications includes a magnetic recording layer having an axis of magnetic anisotropy substantially perpendicular to the surface thereof, an exchange-spring layer ferromagnetically exchange coupled to the magnetic recording layer and having a coercivity less than the magnetic recording layer coercivity, and... Agent: Kunzler Needham Massey & Thorpe

20100128392 - Perpendicular write head having a stepped flare structure and method of manufacture thereof: A magnetic write head for data recording having a magnetic write pole with a stepped magnetic shell structure that defines a secondary flare point. The secondary flare point defined by the magnetic shell portion can be more tightly controlled with respect to its distance from the air bearing surface (ABS)... Agent: Zilka-kotab, PC- Hit

20100128393 - Slider having a lubricant-accumulation barrier including a plurality of lubricant-accumulation-barrier portions: A slider resistant to lubricant accumulation. The slider resistant to lubricant accumulation includes a positive-air-pressure portion of the slider configured to levitate the slider above a magnetic-recording disk and a negative-air-pressure portion of the slider configured to bring the slider into proximity with the magnetic-recording disk at a fly height... Agent: Hitachi C/o Wagner Blecher LLP

20100128394 - Top bond pad bias and variation control: An assembly includes a slider and a suspension assembly. The slider includes an air bearing surface and a slider mounting surface opposite the air bearing surface. There are a plurality of slider pads on the slider mounting surface. The suspension assembly includes a plurality of suspension pads on a suspension... Agent: Kinney & Lange, P.A.

20100128395 - Slider having a lubricant-accumulation barrier: A slider resistant to lubricant accumulation. The slider resistant to lubricant accumulation includes a positive-air-pressure portion of the slider configured to levitate the slider above a magnetic-recording disk and a negative-air-pressure portion of the slider configured to bring the slider into proximity with the magnetic-recording disk at a fly height... Agent: Hitachi C/o Wagner Blecher LLP

20100128396 - Locating feature for mounting a component to a base: The present disclosure provides an apparatus for mounting an object to a base. In one example, the apparatus includes a base and a protuberant feature extending from the base. The protuberant feature includes a datum surface sized to matingly engage a corresponding surface of an object to precisely position the... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100128397 - Flex cable and method for lowering flex cable impedance: A flex cable comprises a base film, a first adhesive layer coupled with the base film, and at least two signal traces coupled with the first adhesive layer. The flex cable comprises a second adhesive layer coupled with the signal traces and the first adhesive layer, and a cover film... Agent: Hitachi C/o Wagner Blecher LLP

20100128398 - Connecting a preamplifier to a printed circuit board assembly on a hard disk drive: Connecting a preamplifier to a printed circuit board assembly on a hard disk drive. The disk includes a housing, a head stack assembly coupled with the housing, a printed circuit board assembly comprising via holes, a preamplifier coupled with the head stack assembly, and at least one deformable pogo pin... Agent: Hitachi C/o Wagner Blecher LLP

20100128399 - Harmonic measurement for head-disk spacing control using user data: A hard disk drive that determines a flying height from a ratio of a first harmonic transfer function and a third harmonic transfer function. The transfer functions can be determined from a response to an impulse function. The impulse function (also known as an impulse response) can be a playback... Agent: Irell & Manella LLP

20100128400 - Current-perpendicular-to-plane (cpp) read sensor with ferromagnetic amorphous buffer and polycrystalline seed layers: A current-perpendicular-to-plane (CPP) tunneling magnetoresistance (TMR) or giant magnetoresistance (GMR) read sensor with ferromagnetic amorphous buffer and polycrystalline seed layers is disclosed for reducing a read gap, in order to perform magnetic recording at higher linear densities. The ferromagnetic amorphous buffer and polycrystalline seed layers couples to a ferromagnetic lower... Agent: Zilka-kotab, PC- Hit

  
05/20/2010 > patent applications in patent subcategories. archived by USPTO category

20100123963 - Magnetic storage apparatus, head test method, and head test apparatus: According to one embodiment, a magnetic storage apparatus configured to write data to and read data from a magnetic medium with a head includes a setting module, a write module, a read module, and a quality measurement module. The setting module sets a plurality of sections divided in the track... Agent: Greer, Burns & Crain

20100123962 - Single-pass defect detection for hard-disk drive systems: In one embodiment, defects are detected on the face of a hard-disk drive platter. A preamble, a sync mark, user or pseudorandom data, and a data pad are written to every sector on a track of the platter. Inter-sector gaps that separate consecutive sectors are overwritten with a fixed data... Agent: Mendelsohn, Drucker, & Associates, P.C.

20100123964 - Storage device and control device: According to one embodiment, a vibration correspondence information storage module stores, each time process such as reading and writing is performed, a head performing the process, a vibration amount of the head upon performing the process, and a process retry count in association with one another as vibration correspondence information.... Agent: Greer, Burns & Crain

20100123967 - Heat-assisted magnetic recording with shaped magnetic and thermal fields to minimize transition curvature: Devices and methods are provided for heat-assisted magnetic recording (HAMR). In an illustrative example, a device includes a magnetic write pole having a convex pole tip; a magnetic opposing pole longitudinally displaced from the magnetic write pole; and a thermal-source component disposed proximate to the magnetic write pole and comprising... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100123966 - Magnetic head, head assembly and magnetic recording/reproducing apparatus: The present invention relates to a magnetic head, a head assembly, and a magnetic recording/reproducing apparatus which are capable of effectively detecting thermal asperity. The magnetic head according to the present invention includes a heat-generating resistor, a recording coil, and a resistive element. The heat-generating resistor is adapted to generate... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20100123965 - Near-field transducers for focusing light: An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a dielectric component and a metallic component positioned adjacent to at least a portion of the dielectric component. An apparatus includes a... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20100123970 - Disk drive, method for measuring clearance and method for writing servo patterns: A disk drive. The disk drive includes a plurality of head-sliders, an actuator, a plurality of clearance adjustment sections, and a controller. Each head-slider includes a slider and a magnetic-recording head on the slider for accessing a disk for storing data. The plurality of head-sliders is secured to the actuator... Agent: Hitachi C/o Wagner Blecher LLP

20100123969 - Information storage device and control circuit: According to one embodiment, an information storage device includes: a head reading user data and a start tag indicating a recording start position of the user data in each sector recorded on a medium, the user data and the start tag being read in order of the start tag and... Agent: Greer, Burns & Crain

20100123968 - Method of positioning electromagnetic conversion element: According to one embodiment, an electromagnetic conversion element positioning method includes: counting a servo clock for every servo sector radially extending on a recording medium, the servo clock being changed in synchronization with a change in rotation angle of the recording medium; reading magnetic information from spiral servo patterns with... Agent: Greer, Burns & Crain

20100123971 - Recording element substrate and recording head including recording element substrate: A recording element substrate includes a recording element array including a plurality of recording elements, a drive circuit configured to drive the recording elements, and a heater located to surround the recording element array as viewed in a direction perpendicular to a surface of the recording element substrate and located... Agent: Canon U.s.a. Inc. Intellectual Property Division

20100123972 - Information storage apparatus, servo pattern formation control apparatus, and recording medium: According to one embodiment, an information storage apparatus, includes: a recording medium with a first servo pattern having absolute position information and a second servo pattern having relative position information; a record reproducing head; a standard position detector calculating a standard position of the second servo pattern where an absolute... Agent: Greer, Burns & Crain

20100123973 - Information storage medium and information storage apparatus: According to one embodiment, an information storage medium includes a plurality of sectors arranged in a circumferential direction of a disk-shaped substrate, each sector having a servo pattern that is formed on the substrate and in which information indicating a position in a radial direction of the substrate is magnetically... Agent: Greer, Burns & Crain

20100123974 - Hard disc drive counter-vibration system: One implementation of the present invention may take the form of a system for a hard disc drive counter-vibration device that may absorb rotational vibration or gyration of the hard disc drive module. This mounting device may incorporate at least one soft, plastic sphere and a pair of concave dished... Agent: Dorsey & Whitney LLP On Behalf Of Echostar Technologies, L.L.C.

20100123975 - Motor and disk driver having the same: A motor and a disk driver having the motor are disclosed. The motor in accordance with an embodiment of the present invention includes: a shaft; a boss, which is coupled to one end of the shaft; a bearing, which supports the other end of the shaft such that the shaft... Agent: Mcdermott Will & Emery LLP

20100123976 - Arm mounted shock sensor and flexible circuit routing: An actuator for supporting data transfer elements includes an arm, a flexible circuit assembly and a sensor. The flexible circuit assembly includes a stiffener having a mount feature and a turnaround feature. The flexible circuit assembly also includes a flexible cable having a plurality of conductive traces for electrically connecting... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100123977 - Vertical-current-type reproducing magnetic head and method of manufacturing the same: In one embodiment, a vertical-current-type reproducing magnetic head includes a sensor film, an upper shield paired with a lower shield that together flow a current into the sensor film in a thickness direction of the sensor film, and magnetic-domain control magnetic films provided above both sides of the sensor film... Agent: Zilka-kotab, PC- Hit

  
05/13/2010 > patent applications in patent subcategories. archived by USPTO category

20100118423 - Determination of the quality of an erase process for perpendicular magnetic recording disks: Methods and test systems are disclosed for determining the quality of an erase process for perpendicular magnetic recording (PMR) disks. After performing an erase process on a PMR disk and before the PMR disk is assembled into a hard disk drive, a first test pattern of magnetization pulses is written... Agent: Duft Bornsen & Fishman, LLP

20100118425 - Disturbance rejection in a servo control loop using pressure-based disc mode sensor: Vibration of a rotatable disc is sensed using a pressure sensor positioned adjacent to and spaced apart from a surface of the rotatable disc. The pressure sensor detects pressure variation caused by vibration of the rotatable disc.... Agent: Hensley Kim & Holzer, LLC

20100118424 - Measurement of round trip latency in write and read paths: A method and apparatus for measuring latency in a communication path is provided. The technique includes driving a signal such as a square wave on the communication path, such as a write path such that it travels around the write-read path, and sensing a returned signal at one end of... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100118427 - Eliminating sector synchronization fields for bit patterned media: Clock synchronization techniques are described for data storage media, particularly for the tolerances of efficient use of bit patterned media (BPM) capacity. In particular, techniques are described where position of a read-write head and timing of a write and/or read clock is determined within a fraction of a dot of... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100118428 - Interspersed phase-locked loop fields for data storage media synchronization: Techniques are described for providing media-referenced timing for operations on a data storage medium. In particular, Phase-Locked Loop (PLL) synchronization fields may be interspersed within data fields of the medium and may be read to obtain timing measurements. The PLL fields are illustratively pre-recorded at predetermined intervals on the medium... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100118429 - Reduced read/write transition overhead for storage media: A technique is described for reducing overhead in a magnetic medium utilizing interspersed timing synchronization fields. In particular, a reader reads timing synchronization fields interspersed within data fields of the medium to obtain timing measurements. The reader is separated from a writer by a distance greater than a distance of... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100118426 - Write clock control system for media pattern write synchronization: A write clock control system comprises a clock controller that determines a phase offset based on a phase difference between a write clock signal and a media pattern corresponding to a given timing synchronization field being read, and a phase interpolator that produces an updated write clock signal by updating... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100118430 - Method and system for improving data access time: A computer implemented method of writing data to a linear tape is provided and includes, of the data to be written to the linear tape, distinguishing between data and meta-information, writing both the distinguished meta-information and undistinguished meta-information to a data area of the linear tape and the distinguished meta-information... Agent: Cantor Colburn LLP - IBM Tuscon Division

20100118431 - Thermally assisted magnetic head having an asymmetric plasmon antenna and manufacturing method thereof: The thermally assisted magnetic head according to the present invention comprises 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. The shape of the plasmon antenna, as viewed from a... Agent: Oliff & Berridge, PLC

20100118432 - Magnetic storage apparatus: According to one embodiment, a magnetic storage apparatus includes a magnetic storage medium that includes a servo pattern in which magnetic bodies magnetized to one of an S-pole and an N-pole are discretely arranged in a non-magnetic substance at least in a recording track line direction, an electromagnetic conversion element... Agent: Greer, Burns & Crain

20100118434 - Storage apparatus and control method of storage apparatus: According to one embodiment, a storage apparatus includes: a storage medium configured to include a plurality of tracks; a head configured to write data to the storage medium; an auxiliary storage module configured to be able to store the data; and a controller configured to determine, during data writing, a... Agent: Greer, Burns & Crain

20100118433 - Write precompensation system: A write precompensation system comprises a write precompensation processor that calculates time shift information for the timing of individual write current transitions at a write head to coincide with a media pattern under the write head and a write precompensation controller that shifts the individual write current transitions in accordance... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100118435 - Magnetic head with planar outrigger: A magnetic head according to one embodiment includes a substrate having a tape bearing surface; a plurality of elements coupled to the substrate and positioned towards the first tape bearing surface, the elements being selected from a group consisting of readers, writers, and combinations thereof; and an outrigger held in... Agent: Zilka-kotab, PC- Ibm

20100118437 - Hard disk drive: A hard disk drive includes a base on which at least one disk recording and storing data is provided, a filter provided in an area around a corner of the base with a predetermined air flow space interposed between the corner and the filter to collect contaminant particles in air... Agent: Stanzione & Kim, LLP

20100118436 - Protective coatings for data storage devices: A data storage device comprising a storage medium having a recordable surface, a transducing head having a bearing surface positioned adjacent to the recordable surface of the storage medium, and at least one compound disposed between the recordable surface and the bearing surface, the at least one compound comprising at... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20100118438 - Thin-film magnetic head, method of manufacturing the same, head gimbal assembly and hard disk drive: A thin-film magnetic head is manufactured as follows. First, a base insulating layer having a magnetic pole forming depression sunken into a form corresponding to the main magnetic pole layer is formed, a stop film for CMP is formed such as to fill the magnetic pole forming depression, and then... Agent: Oliff & Berridge, PLC

20100118439 - Magnetic head and information storage apparatus: According to one embodiment, a magnetic head includes: a coil configured to be supplied with current; a main magnetic pole configured to be disposed along one surface of the coil and extend in a direction orthogonal to a floating surface from the floating surface; at least one auxiliary magnetic pole... Agent: Greer, Burns & Crain

20100118440 - Cage: A cage adapted to carry a plurality of disc drives and fix the disc drives within a case of a computer host is provided. The computer host has a mother board. The disc drives are spread horizontally within the cage, so that the disc drives are hung above the mother... Agent: J C Patents

20100118441 - Method for manufacturing magnetic recording medium, and magnetic recording and reproducing apparatus: Such a method for manufacturing a magnetic recording medium is a method for manufacturing a magnetic recording medium (10) including: a step for forming a magnetic layer on top of a non-magnetic substrate (1), and then forming a resist pattern constituted of a non-magnetic material on top of the magnetic... Agent: Sughrue Mion, PLLC

20100118442 - Head-slider with protrusion control structure and manufacturing method of the head-slider with protrusion control structure: A head-slider. The head-slider includes a slider and a magnetic-recording head formed on the slider. The magnetic-recording head includes a main pole, a return pole to which a recording magnetic field from the main pole returns, a sensor element, a shield provided between the sensor element and the main pole,... Agent: Hitachi C/o Wagner Blecher LLP

20100118443 - Suspension board with circuit and producing method thereof: A suspension board with circuit includes a conductive pattern, a board main body portion on which a magnetic head is mounted, and an auxiliary portion capable of being folded back with respect to the board main body portion so as to face a back surface of the board main body... Agent: Akerman Senterfitt

20100118444 - Flex cable for a hard disk drive having an interrogation trace: A flex cable for a head stack assembly of a hard disk drive comprises a base film, a first adhesive layer coupled with the base film, and at least one interrogation trace and at least one signal trace coupled with the first adhesive layer. The interrogation trace is configured to... Agent: Hitachi C/o Wagner Blecher LLP

20100118445 - Suspension board with circuit: A suspension board with circuit includes a conductive pattern, a board main body portion, an auxiliary portion folded back with respect to the board main body portion, a slider disposed on a side of the suspension board with circuit which is closer to the board main body portion, and mounting... Agent: Akerman Senterfitt

20100118446 - Disk-chucking device: A disk-chucking device comprises a pressing member including a circular groove which is provided around a circumference of the clamp member, and a clamping member mounted on a turning plate for clasping the circular groove of the pressing member. The turning plate provides a through hole at the center thereof... Agent: Husch Blackwell Sanders, LLP Husch Blackwell Sanders LLP Welsh & Katz

20100118447 - Magnetic sensor system and method: A sensor system includes a first magnetoresisitive sensor resistor including a pinned magnetic layer having a fixed orientation in a reference magnetization direction. The first sensor resistor is configured such that its resistance changes in response to an angle defined between the reference magnetization direction and a magnetic field. A... Agent: Dicke, Billig & Czaja

20100118448 - Differential head having a balanced output and method of manufacturing thereof: In one embodiment, a differential-type magnetic read head includes a differential-type magneto-resistive-effect film formed on a substrate, and a pair of electrodes for applying current in a direction perpendicular to a film plane of the film. The film includes a first and second stacked film, each having a pinned layer,... Agent: Zilka-kotab, PC- Hit

  
05/06/2010 > patent applications in patent subcategories. archived by USPTO category

20100110573 - Synchronous writing with timing error detection in bit patterned media disk drives: A hard disk drive that includes a head that is coupled to a disk. The disk drive further includes a comparator circuit that is coupled to the head. The comparator circuit receives a synchronization signal and a write clock. The comparator generates a write error signal if a comparison of... Agent: Irell & Manella LLP

20100110574 - Testing storage system electronics using loopback: A system includes a hard disk controller module configured to control a hard disk. A read channel device is in communication with the hard disk controller module via a read bus and a write bus. The read channel device includes a loopback circuit configured to selectively loop back the write... Agent: Harness, Dickey & Pierce P.L.C

20100110575 - Technology for bit patterned and track patterned magnetic media recording: A method of performing information storage comprises the steps of providing a medium comprising a plurality of concentric rings for storage of information. The medium is written to by a process comprising simultaneously writing and erasing elements in at least two adjacent rings, respectively a first ring and a second... Agent: Seagate Technology LLC C/o Mcdermott Will & Emery LLP

20100110577 - Composite heat assisted magnetic recording media with temperature tuned intergranular exchange: A thin film structure including a plurality of grains of a first magnetic material having a first Curie temperature embedded in a matrix of a second material having a second Curie temperature, wherein the second Curie temperature is lower than the first Curie temperature and the second material comprises one... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20100110576 - Thermally assisted recording media and system: A thermally assisted magnetic recording medium includes a substrate and at least two, i.e., first and second magnetic recording layers. These layers are hard magnetic layers and contain magnetic grains and a non-magnetic substance magnetically segregating the magnetic grains at grain boundaries. The first magnetic recording layer has a magnetic... Agent: Antonelli, Terry, Stout & Kraus, LLP

20100110578 - Signal amplifier and storage device: According to one embodiment, a signal amplifier amplifies a read signal read from a storage medium by a head, and includes an amplifier, a detector, and an impedance controller. The amplifier amplifies the read signal received from the head to obtain an amplified signal, and varies the input impedance of... Agent: Greer, Burns & Crain

20100110579 - Apparatus, system and method for magnetic recording: An apparatus, system and method for magnetic recording are disclosed. In at least one embodiment, the apparatus includes a first portion of a first magnetic medium having a first cross-sectional area, and a second portion of a second magnetic medium having a second cross-sectional area. The first and second portions... Agent: Whyte Hirschboeck Dudek S C Intellectual Property Department

20100110580 - Magnetic disk device: A magnetic disk device includes a disk that includes a plurality of tracks and magnetically stores therein data; a magnetic head that reads and writes data on the tracks; a data writing unit that classifies sectors along one track into a plurality of sector groups and writes to a physical... Agent: Knobbe Martens Olson & Bear LLP

20100110581 - Perpendicular magnetic recording disk drive with patterned disk having capping layer for suppression of surface diffusion of trench material: A magnetic recording disk drive has a patterned perpendicular magnetic recording disk of the type that has spaced-apart pillars with magnetic material on their ends and with trenches between the pillars that are nonmagnetic regions. A nonmagnetic capping layer is located in the trenches above the nonmagnetic regions. The substrate... Agent: Thomas R. Berthold

20100110582 - Multi-channel thin-film magnetic head and magnetic tape drive apparatus with the multi-channel thin-film magnetic head: A multi-channel thin-film magnetic head includes a substrate, a plurality of MR read head elements, a plurality of first resistive elements, and a plurality of second resistive elements. Each MR read head element includes a lower magnetic shield layer, an upper magnetic shield layer, and an MR layer arranged between... Agent: Oliff & Berridge, PLC

20100110583 - Apparatus and method for protecting overheated hard drive: An apparatus and method are provided to monitor the current temperature of a hard drive in a computer system protect, and protect the hard drive from being overheated. The apparatus includes a thermal sensor and a data input/output module. The hard drive stores at least one application program. The thermal... Agent: Apex Juris, PLLC

20100110584 - Dual oxide recording sublayers in perpendicular recording media: A method is described for improving recording performance of a perpendicular media. The method includes using a dual oxide layer as a sublayer of a magnetic recording layer of the perpendicular media. The dual oxide sublayer improves recording performance, increases resistance to corrosion and allows for a thinner exchange break... Agent: Hitachi Global Storage Technologies, Inc.

20100110585 - Perpendicular magnetic recording write head with a trailing shield: Insertion of a two part trailing shield between the write gap and the upper return pole of a magnetic write head reduces the sensitivity of the latter to increases in the current driving the field coils (beyond the required minimum). A key feature is careful control of the distance between... Agent: Saile Ackerman LLC

20100110586 - Planar bidirectional tape head with planar read and write elements: A planar bidirectional tape head with planar read and write elements for reading and writing data on a magnetic recording tape includes a substrate, a tape bearing surface for engaging the magnetic tape, one or more write element arrays formed on the substrate, and one or more read element arrays... Agent: Walter W. Duft

20100110587 - Planar write module and hybrid planar write-vertical read bidirectional tape head: A planar write module and a hybrid planar write-vertical read bidirectional tape head comprising the write module and one or more vertical read modules. The write module has a write module tape bearing surface for engaging the magnetic recording tape. Plural write elements in the write module each comprise plural... Agent: Walter W. Duft

20100110589 - High capacity disk drive using thin foil disks at elevated rotational speeds: p

20100110588 - Perpendicular magnetic recording medium: According to one embodiment, a perpendicular magnetic recording medium includes a soft magnetic underlayer having an amorphous structure or a microcrystalline structure, a first seed layer comprised of a magnetic material having an fcc crystal structure including a CoFe alloy formed on a substrate side, and a second seed layer... Agent: Zilka-kotab, PC- Hit

20100110590 - Suspension board with circuit: A suspension board with circuit includes a conductive pattern, including a slider arranged on a surface side of the suspension board with circuit and mounted with a magnetic head, the magnetic head being electrically connected with the conductive pattern; and a light emitting device arranged on the back surface side... Agent: Akerman Senterfitt

20100110591 - Magnetic unit and magnetic storage device: A magnetic unit includes: a magnetic pinned layer, a first function body, and a second function body. The magnetic pinned layer is provided that a magnetization direction is pinned. The first function body is provided in contact with the magnetic pinned layer and performs a function with the magnetic pinned... Agent: Mr. Jackson Chen

20100110592 - Spin torque oscillator, magnetic recording head, magnetic head assembly and magnetic recording apparatus: A spin torque oscillator includes a first magnetic layer, a second magnetic layer and a first nonmagnetic layer. The first magnetic layer includes a magnetic film of a magnetic material with a body-centered cubic (bcc) structure and an oriented {110} plane of the body-centered cubic structure, the oriented {110} plane... Agent: Nixon & Vanderhye, PC

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