Dynamic magnetic information storage or retrieval inventions

20090279197 - Servo signal recording apparatus: A servo signal recording apparatus of the present invention is provided with a tape motion measurement unit 5 that measures the lateral motion of a magnetic tape 3, and outputs tape motion information, a signal processing unit 20 that generates a servo signal that includes the tape motion information output... Agent: Birch Stewart Kolasch & Birch

20090279198 - Method and apparatus for adaptive control and/or use of a vibration sensor in a hard disk drive: Apparatus and methods are disclosed for adaptive control and/or use of a vibration sensor in a hard disk drive (HDD). The HDD, an assembled circuit board and a control circuit are disclosed. The control circuit is configured to electrically couple to piezoelectric devices and includes a sensor interface and a... Agent: Gregory Smith & Associates

20090279199 - Method and apparatus for reducing slider contact probability in a load-unload (lul) hard disk drive: A Load-UnLoad hard disk drive (HDD) with a roll static angle between the slider and the rotating disk surface of at most zero degrees is disclosed. Put another way, the slider contact with the disk surface during loading is reduced when the outer edge is not nearer than the inner... Agent: Gregory Smith & Associates

20090279200 - Storage device, control circuit for storage device, and servo-write-mode identifying method: A servo-mark search control unit detects in a magnetic disk a servo mark matching a servo mark selected by a servo-mark candidate selecting unit. In this case, according to an instruction from a servo-mark search control unit, a non-volatile memory managing unit writes servo-write-mode identification information corresponding to the detected... Agent: Greer, Burns & Crain

20090279202 - Head design for writing servo patterns on magnetic tape: A servo write head is provided and is configured to simultaneously write at least two servo patterns in respective servo bands on linear magnetic tape. Centerlines of the servo patterns are substantially uniformly spaced in the lateral direction. In addition, the servo patterns of all adjacent respective servo bands are... Agent: Cantor Colburn LLP-ibm Europe

20090279201 - Joint specification of servo format and servo reader parameters for tape drive systems: A servo pattern, including stripes arranged in servo bursts for use in position error signal (PES) generation, is provided in which a stripe width is narrower than 1.7 μm and in which the stripes are oriented at an azimuth angle which in absolute value is equal to or larger than... Agent: Cantor Colburn LLP-ibm Europe

20090279203 - System, method and apparatus for integrated bypass channel and diverter for hard disk drives: An integrated bypass channel and diverter assembly for hard disk drives having small form factors is disclosed. A bypass channel is formed directly in the base plate to allow a partial bypass to exist with or without a diverter feature. The design addresses the issue of proper disk shrouding at... Agent: Larson Newman Abel & Polansky LLP

20090279204 - Method and apparatus for flyng height on demand heaters in a hard disk drive: A hard disk drive is disclosed with a slider containing a Flying height On Demand (FOD) heater using two heater sheets configured to be driven by electric currents flowing in essentially opposite directions, causing the magnetic field induced by the FOD heater to be much smaller than prior art FOD... Agent: Gregory Smith & Associates

20090279206 - Fabrication of trapezoidal pole for magnetic recording: A method for forming a magnetic write pole with a trapezoidal cross-section is described. The method consists of first forming a magnetic seedlayer on a base followed by depositing a removable material layer on the seedlayer, and then a resist layer on the removable material layer. A trench is then... Agent: Kinney & Lange, P.A.

20090279205 - Magnetic head and tape drive for reading multiple data formats: A magnetic head is provided for reading and writing data on a data storage media. A first writer and a first reader write and read data of a first format. A second reader reads data of a second format having different read channels than the first format. A third reader... Agent: Brooks Kushman P.C. / Sun / Stk

20090279207 - Thin-film magnetic head, method of manufacturing the same, head gimbal assembly, and hard disk drive: A thin-film magnetic head is constructed such that a main magnetic pole layer having a magnetic pole end face on a side of a medium-opposing surface opposing a recording medium, a write shield layer opposing the main magnetic pole layer on the medium-opposing surface side, a gap layer formed between... Agent: Oliff & Berridge, PLC

20090279208 - Slider, integrated slider, and hybrid storage device: An opening (3) is formed on a surface of a metal film (2), a plurality of axes (4, 5, 6, 7) cross each other substantially perpendicularly at the opening (3), a plurality of periodic grooves (8, 9, 10, 11) are provided for respective axes (4, 5, 6, 7), and each... Agent: Birch Stewart Kolasch & Birch

20090279209 - Magnetic head suspension: An elastic plate that is supported at both ends by a pair of supporting pieces of a supporting part functions as the load bending part. A portion of a load beam base plate that is positioned on a distal end side than a load bending center line BL of the... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20090279210 - Ramp arrangement for a disk drive and method: A digital storage apparatus includes a housing defining a housing interior and defining a ramp support surface. A disk is supported for rotation in the housing. A head gimbal assembly is supported for use in pivotally accessing the disk in performing one or more data accesses and for moving to... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090279211 - Bearing apparatus for a hard disk drive: A low cost method of attaching an actuator arm assembly to a single head hard disk drive that has a reduced part count The actuator arm assembly includes a suspension arm stamped from a metal and a pivot bearing cartridge contained by a reduced mass outer sleeve.... Agent: Saile Ackerman LLC

20090279212 - Two-axis magnetic field sensor with multiple pinning directions: A fabrication process and apparatus provide a high-performance magnetic field sensor (200) from two differential sensor configurations (201, 211) which require only two distinct pinning axes (206, 216) which are formed from a single reference layer (60) that is etched into high aspect ratio shapes (62, 63) with their long... Agent: Ingrassia Fisher & Lorenz, P.C.

20090279213 - Stabilized shields for magnetic recording heads: A basic design is disclosed for bottom shield (S1) and top shield (S2) of the reader shields in a magnetic read-write head. The critical part of new design includes an antiferromagnetic film which pins an antiferromagnetically coupled trilayer (AFCT). The simplest embodiment for top shield, for example, would be a... Agent: Saile Ackerman LLC

20090273855 - Method for measuring pole width of a slider of a disk drive device: A method for measuring pole width of a slider of a disk drive includes steps of: getting an original image of the pole surface; calculating the light intensity distribution profile of the original image and determining maximum and minimum light intensity data points of the profile; setting average of the... Agent: Nixon & Vanderhye, PC

20090273854 - Method for screening magnetic-recording heads: A method for screening a magnetic-recording head utilizing a simulated-cross-track-gain profile of the magnetic-recording head to provide a manufacturing-qualified, magnetic-recording head. The method includes measuring a track profile of the magnetic-recording head, and providing the simulated-cross-track-gain profile of the magnetic-recording head synthesized utilizing the track profile of the magnetic-recording head.... Agent: Hitachi C/o Wagner Blecher LLP

20090273856 - Timing insensitive method and apparatus for spectral analysis in a disk recording system: A hard disk drive that includes a disk that contains at least one signal and a head that is coupled to the disk. The disk drive also contains a circuit that includes a data sampler that-generates a plurality of data samples from the signal, a harmonic sensor coupled to the... Agent: Irell & Manella LLP

20090273857 - Systems and methods for protecting a sensitive device from corrosion: A method for protecting a magnetic head according to one embodiment includes reducing a relative humidity in a vicinity of a magnetic head by passing an elevated bias current through a sensor of the head during at least some time periods when the sensor is not in use for reading... Agent: Zilka-kotab, PC- Ibm

20090273858 - Substrate for magnetic recording medium, magnetic recording medium, and magnetic recording and reproducing apparatus: It is possible to improve the recording and reproducing S/N ratio, the reproduction signal intensity, and the degree of high density recording. There are provided a plurality of recording tracks formed on a substrate, each recording track being formed of a magnetic material, and non-recording sections formed on the substrate,... Agent: Nixon & Vanderhye, PC

20090273860 - Contact head slider and storage apparatus: A contact surface of a contact head slider is received on a film of a lubricant on a storage medium. The rotation of the storage medium allows the contact surface to slide on the surface of the storage medium. The lubricant adheres to the contact surface. The groove is formed... Agent: Greer, Burns & Crain

20090273859 - Forming a pole tip topography: A method of forming a pole tip topography associated with an air bearing surface (ABS) of a hard disk drive slider is disclosed. The method etches an exposed pole tip region of an ABS at a first angle with respect to the ABS to remove an irregularity from the exposed... Agent: Hitachi C/o Wagner Blecher LLP

20090273861 - Manufacturing method of magnetic recording medium, the magnetic recording medium, and magnetic recording and reproducing apparatus: A magnetic recording medium includes a substrate; and a recording film formed on the substrate and including a main magnetic film, the main magnetic film where a recording area and a guard area are formed by local ion doping, the guard area having saturation magnetization smaller than saturation magnetization of... Agent: Greer, Burns & Crain

20090273862 - Flat e-yoke for cusp write head: A magnetic write pole structure that is configured to greatly simplify the manufacture of a perpendicular magnetic write head. The write head has a magnetic yoke that is oriented along a plane that is perpendicular to the direction of the data track. This allows the entire yoke to be formed... Agent: Zilka-kotab, PC- Hit

20090273864 - Magnetoresistive element including two ferromagnetic layers: A magnetoresistive element includes a first and a second shield, and an MR stack disposed between the shields. The MR stack includes a first and a second ferromagnetic layer, and a nonmagnetic spacer layer disposed between the ferromagnetic layers. The first and second ferromagnetic layers have magnetizations that are in... Agent: Oliff & Berridge, PLC

20090273863 - Thin-film magnetic head for perpendicular magnetic recording and method of making the same: A perpendicular recording thin-film magnetic head comprises a main magnetic pole having a tip main magnetic pole part extending in a height direction from a medium-opposing surface and a base main magnetic pole part connected to the tip main magnetic pole part on a side opposite from the medium-opposing surface... Agent: Oliff & Berridge, PLC

20090262445 - Bulk feeding disk drives to disk drive testing systems: A method of supplying disk drives to a disk drive testing system includes placing a disk drive tote, carrying multiple disk drives, in a presentation position accessible to an automated transporter of the disk drive testing system. The method includes actuating the automated transporter to retrieve one of the disk... Agent: Fish & Richardson P.C.

20090262446 - Method for measuring write width and/or read width of a composite magnetic head and a measuring device using the method: A write sensitive width is calculated by writing a test data by a write head by moving the write head in a radial direction of a magnetic recording medium at a designated speed K to obliquely cross a designated track or a track adjacent to the designated track, reading the... Agent: Mattingly & Malur, P.C.

20090262444 - Transferring disk drives within disk drive testing systems: A method of transferring disk drives within a disk drive testing system includes actuating an automated transporter to retrieve multiple disk drives presented for testing, and actuating the automated transporter to deliver each retrieved disk drive to a respective test slot of the disk drive testing system and insert each... Agent: Fish & Richardson P.C.

20090262447 - Storage device: A storage device includes: a storage unit for writing data into a rotating storage medium via a writing head; a nonvolatile memory; a temporary storage memory for storing a plurality of writing commands temporarily; and a controller for executing the plurality of writing commands so as to selectively write data... Agent: Greer, Burns & Crain

20090262448 - Heat-assisted magnetic head constituted of slider and light source unit, and manufacturing method of the head: Provided is a heat-assisted magnetic recording head constituted of a light source unit and a slider, which can be easily joined to each other with sufficiently high accuracy of joining position. The slider comprises a head part including a waveguide having an incident center on its end. The surface including... Agent: Oliff & Berridge, PLC

20090262449 - Disk drive: A disk drive for driving a disk is disclosed, which includes: a driving unit configured to provide a driving force onto the disk, a main circuit pattern electrically connected with the driving unit, a sensor unit configured to sense a rotation speed of the disk, a first board supporting the... Agent: Staas & Halsey LLP

20090262450 - Data reading module and method for reading optical disc: Disclosed is a data reading module for reading an optical disc with data regions and undesired regions, wherein at least one of the undesired regions is located between the data regions. The data reading module includes: a decoder arranged to decode the optical disc to generate decoded data; a data... Agent: North America Intellectual Property Corporation

20090262451 - Increased format efficiency using disk synchronized write: A hard disk drive with a disk that has a plurality of data fields. Each data field includes a sync field and a plurality of sync marks. Data is written onto the disk in accordance with a write clock. The write clock is generated and synchronized by the sync field... Agent: Irell & Manella LLP

20090262452 - Multichannel time based servo tape media: A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the... Agent: Dorsey & Whitney LLP Intellectual Property Department

20090262453 - Carrier tape having localized adhesive in cavity regions: A carrier tape (100) for releasably mounting electronic components (130) includes an upper surface (110), at least one region (120) for holding the electronic components extending down from the upper surface (110) having sidewall surfaces, and a bottom surface (140). A bottom surface adhesive layer (125) is positioned on at... Agent: Texas Instruments Incorporated

20090262454 - Temperature control within disk drive testing systems: A disk drive testing system cooling circuit includes a plurality of test racks. Each of the test racks include a test slot compartment and a test electronics compartment. Each of the test slot compartments includes multiple test slots, and one or more cooling conduits configured to convey a cooling liquid... Agent: Fish & Richardson P.C.

20090262455 - Temperature control within disk drive testing systems: A disk drive test slot thermal control system includes a test slot. The test slot includes a housing and an air mover (e.g., a blower or a fan). The housing includes an outer surface, and an internal cavity. The internal cavity includes a test compartment for receiving and supporting a... Agent: Fish & Richardson P.C.

20090262456 - Method of formatting magnetic media using a thin film planar arbitrary gap pattern magnetic head: Methods of formatting media using planar magnetic heads. A head may comprise a substrate having conductive thru-hole vias extending therethrough, a first magnetic layer deposited and patterned on the substrate, a first insulation layer deposited and patterned on the first magnetic layer, a conductive coil layer deposited and patterned on... Agent: Dorsey & Whitney LLP Intellectual Property Department

20090262457 - Microwave assisted magnetic recording system: A microwave assisted magnetic recording system includes a write pole that generates a write magnetic field, an element that generates a radio frequency assist magnetic field, and a recording medium that moves relative to the write pole. The recording medium is exposed to the radio frequency assist magnetic field before... Agent: Kinney & Lange, P.A.

20090262458 - Abs design for dynamic flying height (dfh) applications: A DFH (Dynamic Flying Height) type slider ABS design has significantly improved DFH efficiency and a decreased sensitivity of flying height to both ambient conditions and disk surface variations. This is a result of embedding the read/write head and heater in a micro-pad having a very small surface area. The... Agent: Saile Ackerman LLC

20090262459 - Slider of a hard disk drive and hard disk drive having the same: A slider of a hard disk drive can include a slider main body on which a read/write head is mounted, the read/write head configured to write data to a disk and to read data from the disk by being lifted a predetermined height from a surface of the disk by... Agent: Stanzione & Kim, LLP

20090262460 - Head assembly having a sensing element: A head or slider having a sensor element to detect changes in head-media spacing is disclosed. In illustrated embodiments the sensor element includes a piezoelectric sensor layer or similar layer that provides acoustic emission or vibration responsive to changes in head-media spacing. In illustrated embodiments, the sensor element is located... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20090262461 - fluid dynamic bearing with an immiscible fluid barrier: A fluid dynamic bearing with an immiscible fluid barrier deposited on the bearing oil is disclosed. One embodiment provides the fluid dynamic bearing having a seal gap to define a seal cavity. The seal cavity is filled with the bearing oil for lubricating the fluid dynamic bearing. The immiscible fluid... Agent: Hitachi C/o Wagner Blecher LLP

20090262462 - Storage apparatus: A carriage block body is coupled to a support shaft for relative rotation. The carriage block body defines a bearing hole receiving the support shaft. A carriage arm extends from the carriage block body along an imaginary plane perpendicular to the longitudinal axis of the support shaft. The carriage arm... Agent: Greer, Burns & Crain

20090262463 - Disk drive suspension: A suspension is provided with a base plate, load beam, and flexure. The base plate includes a boss portion, a first region situated on a side closer to a slider with respect to a center of the boss portion, and a second region situated on a side more remote from... Agent: Frishauf, Holtz Goodman & Chick, P.C. 16th Floor

20090262465 - Magnetic head and manufacturing method thereof: Embodiments of the present invention provide a magnetic head having a read head of stable reading operation and with less magnetic fluctuation noise. According to one embodiment, a free layer has a structure comprising two ferromagnetic layers (a first free layer and a second free layer) that are coupled anti-ferromagnetically... Agent: Townsend And Townsend And Crew LLP

20090262464 - Perpendicular magnetic write head having a wrap around shield constructed of a low permeability material for reduced adjacent track erasure: A magnetic write head for perpendicular magnetic recording having a trailing, wrap around magnetic shield constructed of a low magnetic permeability. The lower permeability of the shield prevents magnetic saturation of the shield, which in turn prevents adjacent track interference such as adjacent track erasure. The shield can also be... Agent: Zilka-kotab, PC- Hit

20090262466 - Magnetic sensor and magnetic encoder using same: Soft magnetic material elements are provided on both sides of each of magneto-resistance effect elements with a spacing therebetween. As a result, an external magnetic field generated from a magnet can be pulled to above a substrate on which the magneto-resistance effect element is provided, thereby making it possible to... Agent: Beyer Law Group LLP

20090262467 - Magentic junction memory array: A magnetic junction memory array and methods of using the same are described. The magnetic junction memory array includes a plurality of electrically conductive word lines extending in a first direction, a plurality of electrically conductive bit lines extending in a second direction and forming a cross-point array with the... Agent: Campbell Nelson Whipps, LLC