Dynamic magnetic information storage or retrieval inventions 06/07

20070146922 - Write current boosted head amplifier: Embodiments in accordance with the present invention provide a disk drive and a control method in the disk drive which can obtain good recording performance by amplifying the write current according to the recording method and the recording frequency. A HDD in accordance with an embodiment of the present invention... Agent: Townsend And Townsend And Crew LLP

20070146923 - Disk drive apparatus and imaging apparatus: A disk drive apparatus having access to a disk-shaped recording medium includes: a temperature detecting mechanism configured to detect an internal temperature; and a temperature control mechanism configured to change the disk drive apparatus to either an operating state or a stop state based on a change in the internal... Agent: Lerner, David, Littenberg, Krumholz & Mentlik

20070146924 - Portable electronic apparatus containing hard disk drive and power saving control method for use in the apparatus: According to one embodiment, a portable electronic apparatus contains a hard disk drive (HDD). The HDD includes a head used to read/write data from/to a recording medium. An acceleration detection circuit detects acceleration undergone by the portable electronic apparatus, and controls the HDD to retract the head from above the... Agent: Blakely Sokoloff Taylor & Zafman

20070146917 - Detection of signal disturbance in a partial response channel: In one embodiment, irregular electronic disturbance signals in a partial-response read channel are detected by a disturbance detector using state metrics generated by maximum-likelihood sequence detector. For example, a thermal asperity (TA) detector detects the occurrence of TAs in the read channel of perpendicularly recorded magnetic media by using the... Agent: Mendelsohn & Associates, P.C.

20070146918 - Master medium and magnetic recording medium: A master medium has a servo pattern to be transferred onto a magnetic recording medium. The servo pattern includes a magnetically stable pattern that is easily transferred onto the magnetic recoding medium and that is magnetically stable.... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20070146919 - Magnetic disk system: Detection capability of a servo timing mark (STM) is improved. Long STM is configured by pseudo-STM forming part of an AGC/PLL pattern and intrinsic STM. When a system can not recognize the intrinsic STM, it keeps a state that a sector detection window is opened, and is operated in a... Agent: Townsend And Townsend And Crew LLP

20070146921 - Hard disk drive and method for managing scratches on a disk of the hard disk drive: A method for managing scratches on a disk of a hard disk drive is disclosed. By dividing the disk into a plurality of evaluation groups, testing each evaluation group for defects, calculating line equations based on the detected defects and determining whether the defects of the evaluation groups appreciably conform... Agent: Volentine Francos, & Whitt PLLC

20070146920 - Magnetic disk drive, method for registering defective sector, and method for controlling flying height: Embodiments in accordance with the present invention relate to detecting a micro-relief that exists on surfaces of a magnetic disk. A phase or frequency of a read signal obtained when data written to a minute projection or a minute concavity on a recording surface of a magnetic disk is read... Agent: Townsend And Townsend And Crew LLP

20070146925 - Differential timing based servo pattern for magnetic-based storage media: A magnetic storage media includes a magnetic first-pole polarity initialized servo track segment and a magnetic second-pole polarity differential timing based servo pattern recorded on the magnetic first-pole polarity initialized servo track segment The magnetic second-pole polarity differential timing based servo pattern represents magnetic encoded servo position information for facilitating... Agent: Cardinal Law Group Suite 2000

20070146926 - Electronic device receiving apparatus and method of loading/unloading an electronic device at electronic device receiving apparatus: An electronic device receiving apparatus having a sealed structure, includes a tape whereby an electronic device is received in the electronic device receiving apparatus. The tape elastically holds the electronic device and runs inside of the electronic device receiving apparatus. An opening part for loading/unloading and a tape extending mechanism... Agent: Westerman, Hattori, Daniels & Adrian, LLP

20070146927 - Disc clamping device and disc drive having the same: A clamping device that fixes a disc onto a spindle motor that rotates the disc includes a clamp ring that is layered on the disc, and a screw that fixes the clamp ring onto the spindle motor, and has a seating surface that inclines relative to a plane perpendicular to... Agent: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP

20070146930 - Head for perpendicular recording with a floating-trailing shield: Heads for perpendicular recording using a floating-trailing shield are described. The floating-trailing shield is separated from the main pole piece by a layer of non-magnetic material along its entire length and the air bearing surface of the floating-trailing shield is substantially larger than that of the main pole piece. The... Agent: Marlin Knight Hoyt & Knight

20070146929 - Perpendicular head with the shield which approaches through the continuous non-magnetic film to the flare point of the main pole: Embodiments in accordance with the present invention provide a magnetic head having a narrow track width and excellent in productivity for the purpose of realizing a disk storage unit having a large capacity. In a magnetic head having a plurality of flairs on a main magnetic pole, a side shield... Agent: Townsend And Townsend And Crew LLP

20070146928 - Ultra thin seed layer for cpp or tmr structure: Improved magnetic devices have been fabricated by replacing the conventional seed layer (typically Ta) with a bilayer of Ru on Ta. Although both Ru and Ta layers are ultra thin (between 5 and 20 Angstroms), good exchange bias between the seed and the AFM layer (IrMn about 70 Angstroms thick)... Agent: George O. Saile

20070146931 - Method for fabricating a side shield for a flux guide layer for perpendicular magnetic recording: A magnetic head for use in a perpendicular recording system having a novel shield structure that provides exceptional magnetic shielding from extraneous magnetic fields such as from a write coil, shaping layer or return pole of the write head. The shield structure is constructed to have a bottom or leading... Agent: Zilka-kotab, PC

20070146932 - Circumferentially patterned disk for longitudinal and perpendicular recording and method of manufacturing same: A magnetic medium for use in data recording that has a series of concentric magnetic track portions separated from one another by non-magnetic portions or gap portions. The magnetic portions define data tracks and prevent signals from one track from bleeding into another track. Because the data tracks are distinctly... Agent: Zilka-kotab, PC

20070146933 - Magnetic head device: A magnetic head device is provided. The magnetic head device includes a slider that has a facing side which faces a recording medium, and a pressing side on which a pressing force to a recording medium acts. A magnetic device is provided on the trailing side of the slider. The... Agent: Brinks Hofer Gilson & Lione

20070146934 - Method and apparatus for a base plate used in a head gimbal assembly of a hard disk drive: A method of making a base plate blank by either photo-etching or laser-cutting a blank. The base plate blank includes at least two radial troughs symmetrically arranged about a swage center. The base plate blank is used to make a base plate for a head gimbal assembly by die-stamping the... Agent: Gregory Smith & Associates

20070146935 - Magnetic disk apparatus: A magnetic head support mechanism able to inexpensively, simply, and reliably suppress air disturbances accompanying high speed rotation of the magnetic disks, the magnetic head support mechanism having an actuator arm for moving a magnetic head, a long tail for laying read/write signal lines along the arm, and slits for... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20070146936 - Recording medium drive including latch member for head actuator member: A head actuator member is supported on a support shaft for swinging movement. A voice coil motor is connected to the head actuator member. A protuberance is formed on the head actuator member. The protuberance moves along a predetermined movement path around the support shaft. A latch member is supported... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20070146937 - Recording medium drive including latch member for head actuator member: A recording medium drive allows a latch stop member to receive a latch member. The swinging movement around a rotation shaft causes the latch member to enter the movement path of a head actuator member. The latch member thus engages with the head actuator member. The latch member has the... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20070146938 - Head arm and information storage apparatus: A head arm holds a head that accesses information on the information recording medium and includes: a metal plate that plays at least part of a role of holding the head; and a lead unit, provided on the metal plate, electrically connected to the head, and through which a signal... Agent: Greer, Burns & Crain

20070146939 - Narrow gap current perpendicular to plane (cpp) magnetoresistive sensor: A current perpendicular to plane (CPP) magnetoresistive sensor that avoids spin torque noise while having high dr/R performance and small gap. The sensor is a dual magnetoresistive sensor having first and second pinned layers and a free layer disposed between the two pinned layers. One of the pinned layers is... Agent: Zilka-kotab, PC

20070139804 - Magnetic recording medium, stamper recording/reproducing apparatus and method of measuring a parameter: Data track pattern regions, in which data track patterns are formed by concave/convex patterns, and servo pattern regions, in which servo patterns are formed by concave/convex patterns, are provided on a magnetic recording medium so as to be alternately disposed in a circumferential direction. At least one predetermined region that... Agent: Greenblum & Bernstein, P.L.C

20070139814 - Hard disk drive: A hard disk drive includes a base including a plurality of internal parts related to reading and writing of information. The hard disk drive also includes a cover which shields an upper surface of the base. The hard disk drive also includes a ground rib which provides at least a... Agent: Volentine Francos, & Whitt PLLC

20070139802 - Magnetic data read circuit and card processing unit: A magnetic data read circuit includes a differentiation circuit and an integration circuit which are individually connected to a magnetic head, and a means of read judgment for pass/fail judgment on reading operation of magnetic data detected at the magnetic head. The read judgment means has first and second storage... Agent: Reed Smith, LLP Attn: Patent Records Department

20070139803 - Method and apparatus for detecting/correcting defect area and related disk drive: Provided is a method and apparatus for detecting and correcting a defect of a recording medium. The method includes: monitoring a gain variation of a variable gain amplifier (VGA) amplifying a signal detected from a recording medium; detecting a defect location based on the gain variation of the VGA; and... Agent: Volentine Francos, & Whitt PLLC

20070139805 - Disk controller and methods for use therewith: A disk controller includes a write signal generator for generating a write gate signal based on a media event trigger. A read signal generator generates a read gate signal based on the media event trigger and a read/write bit clock. A read/write channel, adjusts the read gate signal based on... Agent: Garlick Harrison & Markison

20070139807 - Media event timer and methods for use therewith: A media event timer includes a counter module for generating a sequence of counts based on a clock signal of a disk drive unit. A counter reset module sets the counter module to a reset count in response to a servo address mark detection signal. A detector module detects that... Agent: Garlick Harrison & Markison

20070139806 - Read/write timing generator and methods for use therewith: A read/write timing generator includes a read/write signal generator for generating a read/write signal in response to the media event trigger of a disk drive and synchronized to a read/write bit clock. A read/write symbol clock generator adjusts a read/write symbol clock based on the read/write signal and the read/write... Agent: Garlick Harrison & Markison

20070139808 - Information storage apparatus and storage medium: The present invention relates to an information storage apparatus that stores information in a storage medium, through the perpendicular magnetic recording system, and provides an information storage apparatus and a storage medium that can maintain the stability of recording and reproducing. The information storage apparatus includes a detection section that... Agent: Patrick G. Burns, Esq. Greer, Burns & Crain, Ltd.

20070139809 - Adaptive write unsafe thresholds for self servo writing: An apparatus and associated method is provided for observing a positional misplacement of a control object at a first commanded position, defining a fault threshold as a function of the observed positional misplacement, and signaling a write unsafe command to the control object in relation to comparing an instantaneous positional... Agent: Fellers, Snider, Blankenship, Bailey & Tippens

20070139810 - Parking ramp for hard disk drive: An HDD parking ramp is disclosed and includes a guide portion having an inclined surface adapted to receive a lift tab associated with an actuator mounting a read/write head during an unloading/parking operation, and a parking surface adapted to accommodate the lift tab at the completion of the unloading/parking operation,... Agent: Volentine Francos, & Whitt PLLC

20070139811 - Method and apparatus for head positioning control in a disk drive: According to one embodiment, a disk drive is provided which corrects already existing offset information according to a variation of a disk runout amount caused by an occurrence of a disk shift. The disk drive effects a head position adjustment at a head positioning control time with the use of... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20070139812 - Cable carrying mechanism and library apparatus: A cable carrying mechanism or library apparatus is configured to include a cable carrying unit (cable bearer) that is fixed at one end to a support unit (frame) supporting a movable unit (medium gripping mechanism unit) causing a positional displacement to carry a cable led by the movable unit while... Agent: Staas & Halsey LLP

20070139813 - Housing opening and closing apparatus for dvd camcorder: A housing opening and closing apparatus of a DVD camcorder includes a main frame in which a DVD is accommodated, a housing which is opened and closed with respect to the main frame, and a housing ejecting unit operated by a solenoid unit to open and close the housing. The... Agent: Roylance, Abrams, Berdo & Goodman, L.L.P.

20070139815 - Disk drive device: A carriage arm has a movement locus and supports a head that performs either one of recording information to a disk and reproducing information recorded on the disk. A carriage driving mechanism moves the carriage arm in a radial direction of the disk to perform a positioning of the carriage... Agent: Amin, Turocy & Calvin, LLP

20070139816 - magnetic transducer with milling mask: A method for fabricating a magnetic head with a trapezoidal shaped pole piece tip is described. The body of the main pole piece is deposited; then one or more layers for the pole piece tip are deposited. A bed material is deposited over the pole piece tip material. A void... Agent: Marlin Knight

20070139817 - Magnetic head for perpendicular magnetic recording, head gimbal assembly, head arm assembly and magnetic disc drive: A magnetic head comprises: a medium facing surface; a coil for generating a magnetic field corresponding to data to be written on a recording medium; and a pole layer allowing a magnetic flux corresponding to the field generated by the coil to pass therethrough, and generating a write magnetic field... Agent: Oliff & Berridge, PLC

20070139818 - Thin-film magnetic head with near-field-light-generating layer: A thin-film magnetic head that has a configuration in which the element-formed surface and the opposed-to-medium surface are perpendicular to each other, and a light source is sufficiently distanced from the medium surface is provided. The head comprises at least one near-field-light-generating layer for heating a part of a magnetic... Agent: Buchanan, Ingersoll & Rooney PC

20070139820 - Magnetic write head having a magnetically anisotropic write pole: A magnetic write head for magnetic data recording. The magnetic write head has a write pole with a magnetic anisotropy induced by an angled, directional ion milling of a seed layer. The magnetic anisotropy is such that a magnetic easy axis of magnetization is oriented substantially parallel with the air... Agent: Zilka-kotab, PC

20070139819 - Perpendicular magnetic recording head device capable of increasing magnetic field gradient to exhibit excellent recording performance while maintaining magnetic field intensity: There is provided a perpendicular magnetic recording head device which can increase magnetic field gradient to exhibit excellent recording performance while maintaining magnetic field intensity capable of performing information recording well. In a perpendicular magnetic recording head device composed of a main magnetic pole layer and a return path layer... Agent: Hunton & Williams LLP Intellectual Property Department

20070139821 - Structures for attaching a head gimbal assembly and an actuator arm: An assembly for attaching a first element to a second element. The assembly includes a first non-metallic connecting member. The first non-metallic connecting member includes a first member having a first surface and a second member. The second member extends substantially perpendicular from a first end adjacent the first surface... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20070139822 - Head support device and disk device having the same: A head support device of self-balancing type and a disk drive are disclosed. The head support device reduces manufacturing variation in a load and the number of components, and has stability and reliability, while being inexpensive. In this head support device, a flange and a nut cramp, via a collar,... Agent: Wenderoth, Lind & Ponack L.L.P.

20070139825 - Micro-actuator mounting structure and method for manufacturing a head gimbal assembly: A micro-actuator frame for a head gimbal assembly includes a bottom support adapted to be connected to a suspension of the head gimbal assembly, a top support adapted to support a slider of the head gimbal assembly, a pair of side arms that interconnect the bottom support and the top... Agent: Nixon & Vanderhye, PC

20070139823 - Micro-actuator, head gimbal assembly, and disk drive unit with the same: A micro-actuator for a head gimbal assembly includes a support frame including a bottom support adapted to be connected to a suspension of the head gimbal assembly, a top support adapted to support a slider of the head gimbal assembly, and a leading beam that couples the bottom support and... Agent: Nixon & Vanderhye, PC

20070139824 - Rotational pzt micro-actuator and manufacturing method thereof: A micro-actuator for a head gimbal assembly includes a metal frame, PZT elements, and a rigid beam. The metal frame includes a top support adapted to support a slider of the head gimbal assembly, and a pair of side arms extending vertically from respective sides of the top support. The... Agent: Nixon & Vanderhye, PC

20070139826 - Magnetically anisotropic shield for use in magnetic data recording: A magnetic shield for use in a magnetic head. The magnetic shield has a magnetic anisotropy associated with a magnetic easy axis of magnetization oriented substantially parallel with the air bearing surface. The magnetic anisotropy of the shield is induced by an anisotropic surface texture. This anisotropic surface texture can... Agent: Zilka-kotab, PC

20070139828 - Gmr and mr enhancing seedlayers for self pinned spin valves: A magnetic head includes a seed layer structure comprising Ta and NiFeCr seed layers; an antiparallel (AP) pinned layer structure formed above the NiFeCr seed layer; a free layer positioned above the AP pinned layer structure; and a layer of metal oxide positioned between the free layer and the AP... Agent: Zilka-kotab, PC

20070139827 - Magnetic sensing device including a sense enhancing layer: A magnetic sensor includes a sensor stack having a first magnetic portion, a second magnetic portion, and a barrier layer between the first magnetic portion and the second magnetic portion. At least one of the first magnetic portion and the second magnetic portion includes a multilayer structure having a first... Agent: Kinney & Lange, P.A.

20070133114 - Method of testing magnetic disc device: A write head, which is positioned by reading a servo pattern with a read head, writes data on even tracks of a magnetic disc, and then writes data on odd tracks. Then a read head is positioned on a read position and sequentially reads all the written data. As a... Agent: Greer, Burns & Crain

20070133115 - Using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal: Provided are a read channel, storage drive and method using a measured error to determine coefficients to provide to an equalizer to use to equalize an input signal. A read channel is incorporated in a storage device to process signals read from a storage medium. An equalizer uses coefficients to... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20070133116 - Detection of data cartridges in an automated data storage library: In an automated library, data cartridges, such as magnetic tape cartridges, are stored in storage cells or shelves and accessed by data storage drives. An accessor with a gripper transports cartridges between storage cells and storage drives. Cartridges on the library floor may damage the accessor. A cartridge sensor is... Agent: Law Office Of Dan Shifrin, PC - Ibm

20070133118 - Information storage apparatus: An information storage apparatus includes a magnetic head having a magnetic pole end that is controllable so as to project, a recording medium for recording and/or reproducing data, a protrusion provided on a surface of the recording medium, the protrusion being used for measuring a flying height of the magnetic... Agent: Patrick G. Burns Green, Burns & Crain, Ltd.

20070133117 - Linear stage including an integrated actuator and associated methods: According to one example a linear translation stage is provided. The linear stage includes a first portion (e.g., a base portion) and a second portion (e.g., a stage portion) configured for relative translation with respect to each other. One of the first portion or the second portion has a coil... Agent: Morrison & Foerster LLP

20070133119 - Method and apparatus for driving vcm unloading hdd head: Provided are a voice coil motor (VCM) driving method for an HDD, related head unloading apparatus and recording media suitable for implementing the driving method. The method of driving a VCM to park a head on a ramp in the HDD includes; driving the VCM using a first driving voltage... Agent: Volentine Francos, & Whitt PLLC

20070133120 - Magnetic storage device and method of correcting magnetic head position: A head position is corrected based on track deviation information read from a storage unit that stores the information on track deviation due to an abnormal pitch of a servo track. At the time of writing data, a track on which a read head R is to be positioned, which... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20070133122 - Hard disk drive: A hard disk drive includes a base including an installation space and a plurality of sidewalls, the installation space being formed by cutting a predetermined area of the plurality of sidewalls. The hard disk drive also includes a screw housing inserted in the installation space and coupled to the base,... Agent: Volentine Francos, & Whitt PLLC

20070133121 - Shock absorbing device for an enclosure: A shock absorbing device for an enclosure. The shock absorbing device including a shock absorbing frame. The shock absorbing frame includes an inner surface coupled adjacent to the enclosure and an outer surface. The shock absorbing device also includes a plurality flexible shock bumpers spaced apart from each other and... Agent: Seagate Technology LLC C/o Westman Champlin & Kelly, P.A.

20070133123 - Disk drive device having a motor, and manufacturing method of the motor: An inner rotor type motor includes a turn table having a disk loading portion and a central opening portion arranged to allow a disk to be attached thereto and removed therefrom, a rotor concentric with a rotation axis of the turn table, the rotor including a rotor holder having therein... Agent: Nidec Corporation C/o Keating & Bennett, LLP

20070133124 - Disk clamp and hard disk drive including the same: A disk clamp to affix a disk of a hard disk drive to a spindle motor. The disk clamp includes a coupling part coupled to an upper portion of the spindle motor with screws, a pressing part provided outside the coupling part to press the disk against the spindle motor,... Agent: Stanzione & Kim, LLP

20070133125 - Magnetic head: A magnetic head has an upper magnetic pole layer, a lower magnetic pole layer, and a gap layer between the upper magnetic pole layer and the lower magnetic pole layer, with data being recorded by magnetizing the surface of a recording medium with magnetic field leaking from the gap layer.... Agent: Patrick G. Burns Greer, Burns & Crain, Ltd.

20070133126 - Magnetic head structure with enlarged insulating layer: A magnetic head structure has a coil and a magnetic pole allowing a magnetic flux generated by the coil to be transmitted therethrough and forming a magnetic gap. An insulating layer surrounds the coil, and a protective layer covers the insulating layer and the magnetic pole. The insulating layer has... Agent: Greer, Burns & Crain

20070133127 - Leader or cartridge attached tape head cleaning brush: A cartridge is provided for cleaning a tape drive head. The cartridge includes a flexible member (e.g., a cartridge leader or tape portion) adapted for use with a tape drive and having a cleaning brush fixed thereto. The cleaning brush may be flexible and include a plurality of bristles for... Agent: Morrison & Foerster LLP

20070133128 - Head suspension with multilayer ground, flexure with multilayer ground, and methods of manufacturing them: A head suspension includes a load beam to apply load onto a head that writes and reads information to and from the hard disk and a flexure attached to the load beam and supporting the head. The flexure has write wires and read wires connected to the head. The flexure... Agent: Jordan And Hamburg LLP

20070133129 - Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus: The present invention provides a thin film magnetic head achieving improved recording performance by sharpening recording magnetic field gradient as much as possible. The thin film magnetic head has a return yoke layer disposed on a trailing side of a magnetic pole layer, and width W3 of an exposed surface... Agent: Kenyon & Kenyon LLP

20070133131 - Shield biasing for mr devices: A magnetic data system according to one embodiment includes a head having a plurality of readers formed above a common substrate, each reader further comprising a shield and a sensor, a bias circuit associated with each reader for passing a bias current through the sensor thereof, wherein the bias circuits... Agent: Zilka-kotab, PC

20070133130 - Substrate biasing for mr devices: A magnetic data system according to one embodiment includes at least one reader formed above a substrate, the at least one reader further comprising a shield and a magnetoresistive (MR) sensor. A first circuit sets a voltage (Vsub) of the substrate to about a voltage (Vshield) of the shield of... Agent: Zilka-kotab, PC

20070133132 - Magnetoresitive sensor having magnetic layers with tailored magnetic anisotropy induced by direct ion milling: A magnetoresistive sensor having a magnetic anisotropy induced in one or both of the free layer and/or pinned layer. The magnetic anisotropy is induced by a surface texture formed in the surface of the magnetic layer of either or both of the free layer or pinned layer. The surface texture... Agent: Zilka-kotab, PC

20070133133 - Current perpendicular to plane magnetoresistive sensor having a shape enhanced pinned layer and an in stack bias structure: A magnetoresistive sensor having an in stack bias structure and a pinned layer having shape enhanced anisotropy. The sensor may be a partial mill design wherein the track width of the sensor is defined by the width of the free layer and the pinned layers extend beyond the trackwidth of... Agent: Zilka-kotab, PC

20070127148 - Apparatus and method for detecting contact between head and recording medium, and method for manufacturing head: In a contact detecting apparatus that detects contact of a head with a recording medium, a signal writing unit writes onto the recording medium, a signal that includes at least one predetermined frequency component; and a contact detecting unit detects the contact of the head with the recording medium based... Agent: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP

20070127147 - Contact detecting apparatus, and method for detecting contact: In a contact detecting apparatus that detects contact of a head with a recording medium, a signal writing unit writes onto the recording medium, a signal that includes at least one predetermined frequency component; and a contact detecting unit detects the contact of the head with the recording medium based... Agent: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP

20070127149 - Offset cancellation scheme for perpendicular reader: A reader input amplifier for a hard disk drive including a gm-amp that compensates for any X-Y imbalance to reduce an excursion, and the time period of the excursion until a final settling point.... Agent: Texas Instruments Incorporated

20070127150 - Apparatus and method for adaptively adjusting recording density of a disk utilizing a trapezoidal shaped magnetic head: An apparatus and method is provided for storing and retrieving information from a disk in which a TPI (tracks per inch) profile of a disk drive including a write pole having a trapezoidal cross-section is adaptively varied. The method includes comparing the slope angle of sides of a write pole... Agent: Volentine Francos, & Whitt PLLC

20070127151 - Retract control method of hdd and hdd using the same: A retract control method of an HDD to prevent a head from landing on a disk due to a retract failure and an HDD using the same. The retract control method includes performing a retract operation of retracting a head on the ramp, determining whether the head is normally retracted... Agent: Stanzione & Kim, LLP

20070127152 - Disk apparatus and method of data read and write: A disk apparatus and a method of data read/write are provided in which even when off-track error occurs at the end sector, the occurrence of the off-track error is detected reliably. Data is read from and/or written into a track on a disk on each sector. An end sector identification... Agent: Armstrong, Kratz, Quintos, Hanson & Brooks, LLP

20070127153 - Tape library storage system including an accessor transport system: An apparatus for transporting a storage media cartridge in a data storage library is disclosed. The apparatus includes an accessor, a pinion and a rack having a straight section and a curved section. The curved section includes multiple rack teeth that are capable of rotating independently from each other to... Agent: Dillon & Yudell, LLP

20070127155 - Magnetic recording and reading device: A magnetic recording and reading device includes a magnetic recording medium having a substrate and at least one magnetic recording layer formed above the substrate, a magnetic head enabling a data transfer rate of more than 50 MB/s and a recording density of more than 5 Gb/in2 on the magnetic... Agent: Antonelli, Terry, Stout & Kraus, LLP

20070127154 - Method and apparatus reducing data damage from mechanical shock in a hard disk drive: Invention protects the data region of a disk surface in hard disk drive, using a facing surface containing a radial bump near an outside region radially beyond the data region. The facing surface and radial bump may belong to a disk base, a disk damper, a disk cover and/or a... Agent: Gregory Smith & Associates

20070127156 - Slim spindle motor and micro-drive apparatus comprising the same: A slim spindle motor and a micro-drive apparatus including the slim spindle motor are provided. In the spindle motor, a hub is rotatably mounted on a base plate by ball bearings. The hub is used to seat a disk thereon. A ring-shaped magnet is engaged to the outer boundary of... Agent: Buchanan, Ingersoll & Rooney PC

20070127157 - Magnetic head device provided with lead electrode electrically connected to magnetic shield layer: A lower shield layer has a substantially flat shape, and an upper shield layer has a front portion and a rear portion, where the front portion is disposed closer to the lower shield layer than the rear portion. A lower conductive electrode and an upper conductive electrode are disposed between... Agent: Brinks Hofer Gilson & Lione

20070127158 - Magnetic recording medium with diamond-like carbon lubricant: A magnetic recording medium includes a substrate and a first side. The substrate defines a first surface and a second surface opposite the first surface. The first side extends over the first surface of the substrate and includes a diamond-like carbon (DLC) layer. The DLC layer includes a DLC lubricant.... Agent: Attention: Eric D. Levinson Imation Corp.

20070127159 - Sintered body for magnetic head slider, magnetic head slider, and method of producing sintered body for magnetic head slider: A sintered body for a magnetic head slider has at least one of TiC and XC, a carbide containing Ti and X, Al2O3, and free carbon, contains 25 to 160 parts by volume of all the carbides including at least one of TiC and XC, and the carbide containing Ti... Agent: Oliff & Berridge, PLC

20070127160 - Method and apparatus for an actuator block used in a actuator assembly of a hard disk drive: An actuator block including at least one slot between each adjacent pair of actuator arms and located behind a site for a flexure stiffener. The resulting hard disk drive shows an improved NRRO. The invention further includes the actuator block including two of the slots between each adjacent pair of... Agent: Gregory Smith & Associates

20070127161 - Beta-phase tantalum thin-film resistor and thin-film magnetic head with the resistor: A thin-film resistor that has a stable electric resistance, the phase transformation to the α-phase being suppressed even in the high temperature environment, is provided. The thin-film resistor has a layered structure of: a base layer formed of a double-layered film in which an alloy film containing nickel and copper,... Agent: Martin Novack

20070127162 - Magnetic head device provided with lead electrode electrically connected to upper shield layer and lower shield layer: A lower shield layer and an upper shield layer are formed to have a planar shape, and a detecting element is provided between the lower shield layer and the upper shield layer. A lower conductive electrode is formed to adhere closely to a facing inner surface corresponding to a top... Agent: Brinks Hofer Gilson & Lione

20070127163 - Magnetic head device provided with lead electrode electrically connected to upper shield layer and lower shield layer: A lower shield layer and an upper shield layer are formed to have a planar shape, and a detecting element is provided between the lower shield layer and the upper shield layer. End faces of the upper shield layer may extend farther in a depthwise direction from a surface facing... Agent: Brinks Hofer Gilson & Lione

20070127164 - Nanoscale sensor: A plurality of densely packed nano-particles are arrayed on a elastic substrate via an intervening spacer by a combination of self-assembly methods or imprinting. The coated substrate is useful as a sensor device as the substrate is sufficiently non-rigid such that the deformation increases the separation between nano-particles resulting in... Agent: Edward S. Sherman, Esq.

20070127166 - Magnetic detecting device having two-layered seed: A magnetic detecting device is disclosed having a fixed magnetic layer, a free magnetic layer, and a nonmagnetic material layer between the fixed magnetic layer and the free magnetic layer. A laminated seed layer having NiFeCr is proximate the fixed magnetic layer. In one version, an antiferromagnetic layer is between... Agent: Brinks Hofer Gilson & Lione

20070127165 - Magnetoresistive effect element, thin-film magnetic head with the element and manufacturing method of the head: An MR effect element that can obtain the sufficient back flux-guide effect under the condition of reducing the capacitance between the upper and lower electrode layers is provided. The element comprises: an MR effect multilayer provided on the lower electrode layer; an insulating layer surrounding a rear side surface and... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070127167 - Magnetoresitive sensor having an enhanced lead overlay design and shape enhanced pinning: A magnetoresistive sensor having a lead overlay defined trackwidth and a pinned layer that extends beyond the stripe height defined by the free layer of the sensor. The extended pinned layer has a strong shape induced anisotropy that maintains pinning of the pinned layer moment. The extended portion of the... Agent: Zilka-kotab, PC