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Dynamic magnetic information storage or retrieval March listing by industry category 03/11

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.
03/31/2011 > 17 patent applications in 15 patent subcategories. listing by industry category

20110075288 - Magnetic recording medium: A novel magnetic recording medium is disclosed in which a plurality of magnetic data recording layers and navigation layers are separate from one another. By decoupling the navigation and data layers, data may be written to data layers without the need to align the written data along servo tracks. Thus,... Agent: The Regents Of The University Of California

20110075287 - System and method for map detector for symbol based error correction codes: A system for decoding data includes a symbol based error correction code device. The error correction code device includes a channel detector configured to generate probability mass function (PMF) information. The error correction code device further includes a decoder coupled to the channel detector. The decoder is configured to use... Agent: Stmicroelectronics, Inc.

20110075286 - System, method and apparatus for determining track pitch in a hard disk drive to satisfy the requirements of both off-track capacity and adjacent track erasure: Track pitch in a hard disk drive is selected to satisfy the requirements of both off-track capacity (OTC) and adjacent track interference (ATI). The invention separately measures the track pitch requirements for OTC and ATI. The track pitch for the drive is set with the larger of the OTC and... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20110075289 - High-rate transition control code for magnetic recording channels: A method and apparatus for reducing noise in a communication signal is provided. The method includes converting raw channel data from the communication signal to a sequence of transition code symbols, each symbol having a plurality of bits, each bit having a position within the symbol. The method also includes... Agent: Stmicroelectronics, Inc.

20110075290 - Systems and methods for adjacent track interference (ati) risk management: Embodiments of the invention broadly contemplate systems, methods and arrangements for managing Adjacent Track Interference (ATI) risk through intelligent management of a table that logs individual tracks creating a risk of ATI in tracks adjacent thereto. Embodiments of the invention provide that tracks considered being at low risk for creating... Agent: Lenovo (singapore) Pte. Ltd.

20110075291 - Disk drive controlled to detect head-disk interference: A disk drive comprises a disk, and a head for reading and writing data on the disk. The disk drive detects head-disk interference (HDI) during a write operation by measuring a parameter during the write operation and comparing the measured parameter against a reference parameter. The reference parameter is measured... Agent: Samsung Electronics Co., Ltd.

20110075292 - Log-structure file system for disk drives with shingled writing: Data is written to a hard disk drive using shingled writing principles, i.e., each data track is partially overwritten when an immediately contiguous data track is written. One or more contiguous data tracks establish a hand, and a band establishes a respective segment in a log-structured file system.... Agent:

20110075293 - Coatings for tape guides: A guide for guiding a magnetic data storage tape has a curved support portion for supporting a major tape surface and at least one flange adjoining the support portion. At least in a region of transition between the support portion and the at least one flange, the guide has an... Agent:

20110075294 - Magnetic head and disk drive with the same: According to one embodiment, a magnetic head for perpendicular recording includes a slider includes a facing surface, and a head section on the slider. The head section includes a main pole, a recording coil configured to excite the main pole, a write/shield pole opposed to a trailing side of the... Agent: Kabushiki Kaisha Toshiba

20110075295 - Slanted bump design for magnetic shields in perpendicular write heads and method of making same: Embodiments provide a slanted bump magnetic shield in a perpendicular write head and a method of making the shield. The slanted bump magnetic shield provides a small throat height to maximize magnetic flux for writing to a magnetic media such as a magnetic storage disk in a hard disk drive,... Agent:

20110075296 - Recording tape cartridge: A recording tape cartridge in which an ability to assemble a security tag into a case is excellent is provided. A recording tape cartridge includes: a case that accommodates a reel on which a recording tape is wound; a security tag having a substantially pillar shape, that is provided within... Agent: Fujifilm Corporation

20110075297 - Patterned magnetic media having an exchange bridge structure connecting islands: Patterned magnetic recording media and associated methods of fabrication are described. The patterned magnetic recording media includes a perpendicular magnetic recording layer that is patterned into a plurality of discrete magnetic islands. The patterned magnetic recording media also includes an exchange bridge structure formed from magnetic material that connects the... Agent:

20110075298 - Fluid dynamic bearing system having a low overall height and a spindle motor having this kind of bearing system: Proposed is a fluid dynamic bearing system having a bearing bush, a shaft rotatably supported in a bearing bore of the bearing bush and a hub connected to the shaft. A bearing gap filled with bearing fluid and having an axial section is defined between the shaft, the bearing bush... Agent:

20110075299 - Magnetic write heads for hard disk drives and method of forming same: Embodiments provide a write pole and a magnetic shield for write heads. The write pole includes a trailing step, while the magnetic shield includes a slanted bump. The slanted bump and the trailing step provides maximize magnetic flux for writing to a magnetic media such as a magnetic storage disk... Agent:

20110075300 - Reducing the propagation of vibrations to an hdd head: Approaches for reducing vibrations, such as resonance vibrations, that are propagated to a hard-disk drive (HDD) head are disclosed. A hard-disk drive may compromise a lead suspension that includes a magnetic read/write head. The magnetic read/write head may be connected to the lead suspension by a plurality of leads. A... Agent:

20110075301 - Head-gimbal assembly, microactuator, and manufacturing method of the microactuator: A head-gimbal assembly. The head-gimbal assembly includes a suspension, a microactuator disposed on the suspension, and a head-slider bonded to the microactuator. The head-gimbal assembly further includes a connection pad disposed on the suspension, a connection pad disposed on the microactuator and formed over an edge between a side surface... Agent:

20110075302 - Baseplate resonant axis optimization: In one implementation, the presently disclosed technology teaches an apparatus with a head attached to an end of a baseplate. The baseplate includes a tilted section that causes a torsion axis of the baseplate to pass near the head. In another implementation, the presently disclosed technology teaches an apparatus with... Agent: Seagate Technology, LLC

03/24/2011 > 10 patent applications in 9 patent subcategories. listing by industry category

20110069408 - Disk drive, head-slider and method for controlling clearance of a read element and a write element in the disk drive: A disk drive. The disk drive includes a disk, a head-slider, a moving mechanism, and a controller. The head-slider includes a read/write element, a first heater element, a contact pad, and a second heater element. The read/write element includes a read element configured to read user data from the disk,... Agent:

20110069410 - Magnetic-recording-disk test-head and method of manufacturing a magnetic-recording disk using the magnetic-recording-disk test-head: A magnetic-recording-disk test-head. The magnetic-recording-disk test-head includes a slider, a test pad and a slider-surface-shape control mechanism. The slider includes a leading edge and a trailing edge. The test pad is disposed at a trailing-edge side of the slider and is configured to remove and to detect asperities on a... Agent:

20110069409 - Method and apparatus for forming servo patterns on a magnetic-recording disk: A method for forming servo patterns on a magnetic-recording disk. The method includes moving a magnetic-recording head in an opposite direction to a pattern development direction, when there is a faulty servo pattern. The method also includes positioning a write element of the magnetic recording head on a track of... Agent:

20110069411 - Head servo control system and head servo control method: A servo control system configured to position a head in accordance with position error signals between servo data on a disk read by the head in a servo sampling cycle and a target position. The system includes a plurality of adaptive peak filters connected in parallel configured to filter the... Agent:

20110069412 - Library apparatus, library system and medium transportation method of library apparatus: A library apparatus includes a housing having an opening, a cell unit including a plurality of cells for storing a storage medium, a drive unit for writing data into or reading data from the storage medium, a medium transportation unit for accessing each of the cells and the drive unit... Agent: Fujitsu Limited

20110069413 - Current-perpendicular-to-the-plane (cpp) magnetoresistive read head with multiple sensing elements for patterned-media: A magnetoresistive (MR) sensor or read head for a magnetic recording disk drive has multiple independent current-perpendicular-to-the-plane (CPP) MR sensing elements. The sensing elements are spaced-apart in the cross-track direction and separated by an insulating separation region so as to be capable of reading data from multiple data tracks on... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20110069414 - Hard-disk drive: A hard-disk drive. The hard-disk drive includes a magnetic-recording disk in which tracks adjacent to each other are magnetically separated, a spindle motor which drives the magnetic-recording disk, a magnetic-recording head equipped with write element and read element, an actuator for positioning the magnetic-recording head on a predetermined track on... Agent:

20110069415 - Method and apparatus for detecting rapid of track following and protecting nearby tracks from rapid off track writing in a hard disk drive: This application discloses a hard disk drive using a self-resonant frequency band of a Voice Coil Motor far above its operational frequency band to predict Rapid Off Track events before its head stack assembly can deliver the disruption to the slider writing a track. A circuit board and/or an integrated... Agent:

20110069416 - Spindle motor: A spindle motor according to an aspect of the invention may include: a base on which a sleeve is mounted; a rotor bound together with a shaft rotatably mounted on the sleeve and rotating by electromagnetic interaction with the stator; a pulling plate mounted on the base to generate a... Agent: Samsung Electro-mechanics Co., Ltd.

20110069417 - Magnetoresistive effect element in cpp structure and magnetic disk device: An MR element in a CPP structure includes an MR part configured with a nonmagnetic layer, a first ferromagnetic layer that functions as first free layer and a second ferromagnetic layer that functions as a second free layer, and first and second ferromagnetic layers are laminated to sandwich the nonmagnetic... Agent: Tdk Corporation

03/17/2011 > 13 patent applications in 11 patent subcategories. listing by industry category

20110063746 - Systems and methods for improved servo data operation: Various embodiments of the present invention provide systems, methods and media formats for efficiently determining a position error of a head in relation to a storage medium. In one case, a system is disclosed that includes a storage medium with a series of data. The series of data includes a... Agent:

20110063748 - Hard disk drive with reduced power consumption, related data processing apparatus, and i/o method: A hard disk drive is disclosed and related methods of reading/writing data are disclosed. The hard disk drive includes a disk serving as a main data storage medium, and first and second buffers storing data to be stored on the disk, as well as a controller defining a data I/O... Agent: Samsung Electronics Co., Ltd.

20110063747 - Systems and methods for timing and gain acquisition: Various embodiments of the present invention provide systems and methods for acquiring timing and/or gain information. For example, various embodiments of the present invention provide data processing circuits that include a sample splitting circuit, a first averaging circuit, a second averaging circuit and a parameter calculation circuit. The sample splitting... Agent: Lsi Corporation

20110063749 - Dual-port hard-disk storage device: The hard-disk storage device contains a USB jack, an internal SATA jack, a signal processor, an electronic controller, and a 2.5″ SATA HDD. The USB jack is connected to a corresponding USB jack on a personal computer so as to be used as an external removable storage device. The internal... Agent:

20110063750 - System and method to control spin-up of storage device: A storage device spin-up control system includes a storage device to store data, a host to selectively control a spin-up mode of the storage device, and an interface to link the storage device and the host. The host controls the spin-up mode of the storage device based on a level... Agent: Samsung Electronics Co., Ltd.

20110063751 - Method and apparatus for positioning a magnetic-recording head: A method for positioning a magnetic-recording head. The method includes correcting amplitude of each burst signal of a plurality of burst signals read out with the magnetic-recording head from each respective burst pattern of a plurality of burst patterns. In addition, the method includes computing a deviation of the magnetic-recording... Agent:

20110063752 - Sensor position adjustment with media velocity relative sample timing: A system and method for positioning a sensor relative to a storage medium. A system includes a first sensor and a second sensor arranged so that a point of a storage medium traverses each sensor at a different time. A processor is coupled to the sensors. The processor varies the... Agent: Hewlett-packard Devekopment Company, L.p.

20110063753 - Multi-layer sheet product: A magnetically-activatable sheet product is provided comprising a pair of laminated outer sheets at least one of which is provided with a pigment/binder primer coat on its inward facing surface, between which is a magnetic layer comprising magnetically-activatable particles in a binder matrix, the outer sheets having sufficient opacity to... Agent: Arjo Wiggins Limited

20110063754 - Perpendicular magnetic write head: A perpendicular magnetic write head in which unintended erasure of information at the time of non-writing can be suppressed while keeping the capability of writing is provided. The perpendicular magnetic write head includes a magnetic pole tip portion, a first yoke portion connected to the magnetic pole tip portion, having... Agent: Sae Magnetics (h.k.) Ltd.

20110063755 - Pmr write with flux choking area: A PMR writer having a trailing shield structure is disclosed in which a flux choking layer (FCL) formed adjacent to the ABS provides a means to limit the amount of flux flowing from the trailing shield to a first write shield (WS1) near the write pole tip thereby significantly reducing... Agent: Headway Technologies, Inc.

20110063756 - Magnetic write device with a cladded write assist element: A magnetic device includes a write element having a write element tip and a conductor adjacent an edge of the write element tip for carrying current to generate an assist field that augments a write field generated by the write element. A cladding material is disposed on at least one... Agent: Seagate Technology LLC

20110063757 - Slider pad for contact mitigation: An apparatus and associated method for a slider pad that allows for contact to be mitigated without plastic deformation. Various embodiments of the present invention are generally directed to a slider that presents a transducer and has at least one air bearing surface (ABS) feature. The ABS feature comprises a... Agent: Seagate Technology LLC

20110063758 - Spin filter junction and method of fabricating the same: A magnetic tunnel junction having a first electrode separated from a second electrode by a tunneling barrier is provided. The tunneling barrier is a ferromagnetic insulator that provides a spin dependent barrier energy for tunneling. The first electrode includes a ferromagnetic, electrically conductive layer. Electrons emitted from the first electrode... Agent: The Board Of Trustees Of The Leland Stanford Junior University

03/10/2011 > 14 patent applications in 12 patent subcategories. listing by industry category

20110058270 - Rework method and apparatus of magnetic record medium, information: A reproducing method of reproducing magnetic information written in each of bits of a recording medium using a magnetic head having a reading element configured to measure external magnetic field intensity includes moving, measuring and specifying steps. In the moving step, the magnetic head moves to a position where the... Agent: Tdk Corporation

20110058271 - Systems and methods for reducing crosstalk between adjacent writers: In one general embodiment, a recording system controller includes a controller controlling a timing of flux switching of adjacent pairs of writers such that the writers in a given pair do not switch substantially concurrently, and reducing a current of one of the writers in the pair while the adjacent... Agent: International Business Machines Corporation

20110058273 - Heat-assisted magnetic recording head with laser diode fixed to slider: A heat-assisted magnetic recording head includes a slider, an edge-emitting laser diode fixed to the slider, and an external mirror provided outside the slider. The slider includes a magnetic pole, a waveguide, and a near-field light generating element. The laser diode includes: an emitting end face that lies at an... Agent: Headway Technologies, Inc.

20110058272 - Thermally-assisted magnetic recording head comprising near-field light generator: Provided is a thermally-assisted magnetic recording head capable of setting the near-field light (NFL-) emission point to be sufficiently close to the write-field-generating portion. The head comprises a magnetic pole, a waveguide propagating light, and a NFL-generator coupled with the light in surface plasmon mode. The NFL-generator comprises a propagation... Agent: Tdk Corporation

20110058275 - Disk drive including head-slider configured to suppress lubricant droplet accumulation: o

20110058274 - Hard-disk drive and control method for magnetic recording on a patterned medium of the hard-disk drive: A hard-disk drive. The hard-disk drive includes a magnetic-recording disk including tracks on which a plurality of patterned bit-cells that are isolated magnetically are aligned at predetermined alignment pitches. The hard-disk drive includes a magnetic-recording head which is configured to follow tracks, and to write and to read data. The... Agent:

20110058276 - Servo control of a disk drive: A disk drive comprising a head for accessing a disk, an actuator for moving the head in the radial direction of the disk and a controller. The controller for servo control of the actuator based on servo data read out from the disk by the head. The controller is configured... Agent:

20110058277 - Asymmetric writer for shingled magnetic recording: In one embodiment, a system includes a writer for shingled recording which includes a write pole having a trailing edge and first and second side edges extending from the trailing edge. The writer further includes a shield extending along and about parallel to only a portion of the trailing edge... Agent:

20110058278 - High stroke efficiency air-bearing design: This disclosure is directed to air-bearing sliders used in magnetic storage systems that employ a trench arranged between a transducing head connected to a slider body and a leading edge of the slider body. The trench is configured to divert air passing over an air-bearing surface of the slider body... Agent: Seagate Technology LLC

20110058279 - Overcoat having a low silicon/carbon ratio: A slider for an information storage system. The slider comprising a single overcoat layer, wherein the layer is deposited onto an ABS of the slider by a filtered cathodic arc process, the layer having a Si/C ratio less than about 10% and a thickness of less than about 15 Å.... Agent:

20110058280 - Disk drive suspension: A microactuator mounting section is disposed between a base section and a load beam. A microactuator element formed of a piezoelectric element is contained in an element accommodation portion in a plate portion. The plate portion has a stationary part secured to the base section and a movable part secured... Agent: Nhk Spring Co., Ltd.

20110058281 - Disk drive suspension: A flexure with conductors is provided with a flexure tail portion. The flexure tail portion includes a metal base, an electrically insulating layer, and a conductive member. The metal base is formed with a plurality of apertures. A damper is attached to the flexure tail portion. The damper includes a... Agent: Nhk Spring Co., Ltd.

20110058282 - Magnetic head suspension: In a magnetic head suspension according to the present invention, each of paired piezoelectric elements is disposed within an open section of a supporting part so that at least a part of its distal-side end surface faces a distal-side wall surface of the distal end section of the supporting part... Agent: Suncall Corporation

20110058283 - Perpendicular recording device having reduced sensitivity to external fields: In a read-write head, the shields can serve as magnetic flux conductors for external fields, so that they direct a certain amount of flux into the recording medium. This problem has been overcome by the addition to the shields of a pair of tabs located at the edges closest to... Agent:

03/03/2011 > 22 patent applications in 19 patent subcategories. listing by industry category

20110051274 - Method to evaluate a data storage device using magnetic spacing losses: A method of evaluating the performance of a magnetic recording system, comprising measuring a first set of finite impulse response filter tap values at time t1, measuring a second set of finite impulse response filter tap values are measured at time t2, where time t2 is subsequent to time t1,... Agent:

20110051275 - Computer system, disk storage device and method of controlling the same: A computer system, a disk storage device and a method of controlling the same reads data by a reading size from a disk storage unit in which the data is stored according to a request of an application for reading data. The data is divided from the reading size into... Agent:

20110051276 - Disk array apparatus: An object of the present invention is to improve safety. A disk array apparatus of the present invention includes: CHE and MEM for temporarily storing data which is transmitted/received between a host device and a disk enclosure; CPU, RAIDC, and NVMC for controlling transmission/reception of data; power supply units for... Agent:

20110051277 - Method for erasing magnetic tapes: A method is provided for securely erasing residual data on a magnetic tape formatted with a plurality of servo patterns providing boundaries between a plurality of data bands containing data that is recorded thereon during normal write operations, the data being written on many adjacent data tracks that run parallel... Agent:

20110051278 - Data storage drive overwrite protection of non-worm cartridges: Protection against data overwrite of a rewritable non-WORM data storage cartridge is provided by a data storage drive operating cartridge data overwrite protection procedures independent of, or not withstanding, the absence of cartridge controls relating to data overwrite protection. Also for the non-WORM cartridge, the drive responds to an allow... Agent:

20110051279 - Efficient moves through drive remapping: A storage library is described including a first tape drive that is identified as a target tape drive to a host via a first address and a second tape drive that is masked from being identified by the host. The storage library further includes a controller that is linked with... Agent:

20110051280 - Overhead calculation in writing synchronized data to magnetic tape: Various embodiments for writing received synchronized data to magnetic tape having a plurality of wraps using a magnetic tape drive adapted for performing the writing according to an available plurality of predefined tape speeds are provided. In one such embodiment, for each of the available plurality of predefined tape speeds,... Agent:

20110051281 - Magnetic recording medium and magnetic recording/reproducing apparatus: A magnetic recording medium having a magnetic pattern magnetically partitioning a magnetic layer, formed on a non-magnetic substrate, wherein the magnetic pattern is comprised of magnetic regions and non-magnetic regions surrounding each of the magnetic regions, the non-magnetic regions form depressions, the magnetic pattern comprises data areas and servo information... Agent:

20110051282 - Magnetic recording medium, magnetic recording and reproducing apparatus, and method for manufacturing magnetic recording medium: the magnetic recording medium including, on at least one surface of a disc-shaped substrate, an annular magnetic recording region (A); and a landing region (B) arranged along the edge portion of the magnetic recording region (A); a data region (41) in which a data pattern (45) configured from a protruding... Agent:

20110051283 - Method to minimize the effects of tape skew and tape dimensional stability: A method, system and computer-usable medium are disclosed for performing data write and data read operations on a tape storage medium. A dual head/tape actuator assembly, comprising two head/tape actuator assemblies, is implemented to perform data write and data read operations on a tape medium. Each of the head/tape actuator... Agent:

20110051284 - Systems and methods for fabricating magnetic writer structures using post-deposition tilting: A method according to one embodiment includes forming a first portion of a thin film writer structure on a substantially planar portion of a substrate such that planes of deposition of the first portion of the writer structure are substantially parallel to a plane of the substrate; forming a portion... Agent:

20110051285 - Method to reduce sensitivity of a magnetic read-write head to external magnetic fields: In a read-write head, the shields can serve as magnetic flux conductors for external fields, so that they direct a certain amount of flux into the recording medium. This problem has been overcome by the addition to the shields of a pair of tabs located at the edges closest to... Agent:

20110051286 - Writing data on alternating magnetic and nonmagnetic stripes of a servo pattern: A recordable magnetic media includes a servo pattern having a plurality of adjacent alternating magnetic and nonmagnetic material stripes. At least some of the magnetic material stripes have magnetic transitions that define encoded data.... Agent:

20110051287 - Disk drive device with improved shock resistance: The disk drive device includes a base plate, a hub on which a recording disk is mounted, a shaft bearing unit that is arranged on the base plate and that rotatably supports the hub, and a spindle drive unit that drives the hub to rotate. The spindle driving unit includes... Agent:

20110051288 - Perpendicular magnetic recording system and write head with transverse auxiliary pole for fast switching of write pole magnetization: A perpendicular magnetic recording system has a write head having a main coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and a transverse auxiliary pole (TAP) that injects auxiliary magnetic flux... Agent:

20110051289 - Head-gimbal assembly including piezoelectric elements: A head-gimbal assembly (HGA). The HGA includes a deformable plate affixed to a load beam, a piezoelectric element affixed to the deformable plate, and a base plate affixed to the deformable plate. The deformable plate includes: a hole; a first section in front of the hole and affixed to the... Agent:

20110051290 - Power supply structure for piezoelectric actuator and head suspension employing the same: A power supply structure for a piezoelectric actuator is provided. The piezoelectric actuator has a base member, a movable member, and a piezoelectric element arranged between the base member and the movable member. When receiving electric power, the piezoelectric element causes a shear deformation to minutely move the movable member... Agent:

20110051291 - Cpp-type thin film magnetic head provided with side shields: A thin film magnetic head includes first and second shield layers that are positioned on both sides of a magnetoresistive (MR) stack with respect to a film surface orthogonal direction; a first exchange-coupling layer that is positioned between the MR stack and the first shield layer and that generates an... Agent:

20110051292 - Disk drive comprising impedance discontinuity compensation for interconnect transmission lines: A disk drive comprising a disk, and a head actuated over the disk, the head comprising a read element and a write element. The disk drive further comprises a preamp and an interconnect comprising a first transmission line and a second transmission line coupling the head to the preamp. A... Agent:

20110051294 - Non rectangular reader for ultra high density magnetic recording: A magnetic sensor or magnetoresistive read head comprises a sensor stack and magnetic bias elements positioned adjacent each side of the sensor stack. The sensor stack and bias elements have non-rectangular shapes, such as substantially trapezoidal or parallelogram shapes having non-perpendicular corners. In some embodiments, the sensor stack and bias... Agent:

20110051293 - Tapered pmr write pole with straight side wall portion: A main pole layer with a tapered trailing side is disclosed that has three sections each with a write pole portion along the ABS and a yoke portion. A lower section has a bottom surface including a leading edge at the write pole tip and sidewalls with a bevel angle... Agent:

20110051295 - Magnetoresistive effect element in cpp-type structure and magnetic disk device: In an MR element of the present invention, an effect of an extremely-high MR ratio is obtained since a crystal structure of a CoFe magnetic layer in the vicinity of an interface with a spacer layer is formed as a close packed structure, such as an hcp structure and an... Agent:

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