Dynamic magnetic information storage or retrieval inventions 06/08

20080151403 - Apparatus and method for determining motor spin direction of a hard disk drive: A method for determining motor spin direction of a hard disk drive is provided. The method includes forming an air inlet on a first sidewall of a disk drive base. The method further includes forming an air outlet on a second sidewall of the disk drive base wherein the air... Agent: Hitachi C/o Wagner Blecher LLP

20080151404 - Integrated spiral certification head for media magnetic testing including pmr and lmr media: Testing procedure (Integrated Head Spiral Testing) for disk media utilizes a single head with both write and read elements that are offset to allow spiral testing. The offset allows a write element to write one portion of a spiral track while a read element simultaneously reads a previously written portion... Agent: Hitachi Global Storage Technologies, Inc.

20080151405 - System and method for drive-side guarantee of quality of service and for extending the lifetime of storage devices: A storage device has a storage medium, a plurality of read-write mechanisms, a quality monitoring and book-keeping unit and a scheduling unit. The plurality of read-write mechanisms is coupled to the storage medium. The quality monitoring and book-keeping unit is coupled to the plurality of read-write mechanisms and is adapted... Agent: Seagate Technology Llc C/o Westman Champlin & Kelly, P.a.

20080151406 - Storage apparatus, method of controlling amount of write current overshoot in storage apparatus and storage medium storing its program: A storage apparatus comprises: a current parameter varying section that can make a write current used for writing information on the storage medium and an overshoot amount corresponding to the write current variable; a detection section that detects an error rate or its corresponding error rate parameter for a plurality... Agent: Greer, Burns & Crain

20080151407 - Write omission detector, write omission detecting method, and computer product: A device adaptor that controls a disk, wherein a storage area is divided into a plurality of blocks, detects a block that includes a read error. Next, the device adaptor detects a write omission in blocks that are within a predetermined range from the block that includes the read error.... Agent: Staas & Halsey LLP

20080151408 - Iteration method to improve the fly height measurement accuracy by optical interference method and theoretical pitch and roll effect: In one embodiment and method of the present invention, an optical interference fly height (FH) test apparatus for measuring FH is disclosed, in accordance with an embodiment of the present invention, to include a slider, a transparent disk, means for directing a light beam directed between the slider and the... Agent: Law Offices Of Imam

20080151410 - Magnetic recording-reproducing apparatus: A magnetic recording-reproducing apparatus for recording or reproducing information on or from a magnetic recording medium constituted of plural recording areas containing sectors joined together, comprises a memorizing unit for memorizing information on positional deviation of the sectors at the boundary between adjacent recording areas, and a controlling unit for... Agent: Fitzpatrick Cella Harper & Scinto

20080151409 - Method and apparatus for writing spiral servo pattern in a disk drive: According to one embodiment, there is to provide a servo write method of writing a multi-spiral servo pattern to a disk medium, the method including a process of writing a spiral index pattern to the disk medium, the spiral index pattern being a spiral pattern including the same region as... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080151411 - Startup processing method for medium storage device, controller for medium storage device, and medium storage device: A medium storage device performs ready processing for enabling a head to access data on a storage medium after power is turned ON, in order to prevent to change the status to offline by the host even if ready time is delayed due to retry. The medium storage device has... Agent: Greer, Burns & Crain

20080151412 - Method and apparatus for writing spiral servo pattern in a disk drive: According to one embodiment, a servo writing apparatus that writes a multi-spiral servo pattern to a disk medium is disclosed. The apparatus has a servo controller that generates a servo clock determining a head seek start timing, a servo pattern generator that generates a sector index pulse determining the interval... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080151413 - Method and apparatus for writing servo pattern using spiral pattern in disk drive: According to one embodiment, there is provided a servo write method of writing specified servo patterns to a disk medium on the basis of a spiral servo pattern recorded on the disk medium, wherein when the spiral servo pattern is read using a head, position detecting data used to detect... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080151414 - Method and apparatus for positioning head using spiral servo pattern in a disk drive: According to one embodiment, there is to provide a disk drive which calculates an error in the position of a head on the basis of concentric servo patterns. The disk drive has a disk medium on which spiral servo patterns are recorded and a read head which reads the spiral... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080151415 - Progressive track width head and method: A method according to one embodiment comprises reading servo information from a tape; and positioning a head relative to the tape so that readers in an array are about aligned with selected data tracks on the tape, wherein the track width of an inner reader of the array is greater... Agent: Zilka-kotab, Pc- Ibm

20080151416 - Synchronous servo channel for tape drive systems: A fully synchronous servo channel for a data tape drive is provided which includes the initial acquisition of synchronous servo channel parameters, generation of a timing basis for signal interpolation, generation of a tape velocity estimate and a y-position estimate and an optimum detection of longitudinal position (LPOS) symbols embedded... Agent: Law Office Of Dan Shifrin, Pc - Ibm

20080151417 - Disk drive with variable track density: A method of manufacturing a disk drive is disclosed in which servo information is written in tracks on a disk surface, the track width performance of the associated read/write transducer is measured, the track width performance is analyzed and a data track pitch is established. Based on the data track... Agent: Saile Ackerman Llc

20080151418 - Tradeoff between reliability and performance for a disk drive: Embodiments of the present invention pertain to a tradeoff between reliability and performance for a disk drive. According to one embodiment, a first measurement at a first thermal fly height control (TFC) heater level that provides low reliability for a parameter and a second measurement at a second TFC heater... Agent: Hitachi C/o Wagner Blecher LLP

20080151421 - Cushioning member, shock protection device, and portable information equipment using the same: A cushioning member includes a first plane, an opening opened to the first plane, and an air storage for storing air formed from the opening to an inside of the cushioning member. When a shock load is imposed on the cushioning member, the air in the air storage is compressed,... Agent: Ratnerprestia

20080151420 - Disk damper apparatus, hard disk drive apparatus with the same, and method of fabricating the disk damper apparatus: A disk damper apparatus and a hard disk drive apparatus (HDD) with the disk damper, and a method of fabricating the disk damper. The disk damper includes a plate interposed between stacked disks and formed of metal and a spacer having a thickness greater than and fabricated separately from the... Agent: Stanzione & Kim, LLP

20080151419 - Reducing a probability of an organic ring forming on an air bearing surface of a slider while manufacturing the head stack assembly: Embodiments of the present invention pertain to reducing a probability of an organic ring forming on an air bearing surface of a slider while manufacturing the head stack assembly. According to one embodiment, clean dry air is received. The clean dry air is blown at a location on a suspension... Agent: Hitachi C/o Wagner Blecher LLP

20080151422 - Enhanced planarization liftoff structure and method for making the same: Systems and methods for enhanced planarization liftoff structures. In accordance with a first method embodiment, a method for manufacturing a pole tip for magnetic recording comprises accessing a wafer comprising a plurality of pole tips and a plurality of pole tip masks corresponding to the plurality of pole tips. Non... Agent: Hitachi C/o Wagner Blecher LLP

20080151423 - Spacer, manufacturing method of the spacer, disc drive having the storage: A spacer is to be attached to a hub that rotates plural disc in a disc drive, configured to space two adjacent discs, and has an annular shape and an internal surface that opposes to the hub. The spacer includes three projections on the internal surface.... Agent: Kratz, Quintos & Hanson, LLP

20080151424 - Formation of low resistance damascene coils: In one embodiment and method of the present invention, a coil of a write head is created by forming a P1 pedestal layer and a back gap layer and further forming a coil pattern consistent with the coil to be formed and insulator spacers dispersed in the coil pattern, using... Agent: Law Offices Of Imam

20080151425 - Reinforced tape for a data storage device: A data storage device is disclosed with a housing sized for a tape drive. A tape reel is mounted for rotation within the housing and a guide is mounted in the housing spaced apart from the tape reel. A first end of a data tape segment is mounted to the... Agent: Brooks Kushman P.c. / Sun / Stk

20080151426 - System and method for compliant, adaptive hard drive sliders: A system and method for dynamically controlling the position of a hard drive head is disclosed. The system includes a hard drive slider comprising a first substrate, a second substrate coupled to the first substrate wherein the second substrate comprises a plurality of flexures wherein at least one of the... Agent: Hitachi C/o Wagner Blecher LLP

20080151428 - Head suspension assembly and storage medium drive: A first joint member connects the surface of a support body to a first end surface of a head slider. A second joint member connects the surface of the support body to a second end surface of the head slider. The first and second end surfaces respectively stand upright from... Agent: Greer, Burns & Crain

20080151427 - Thermally assisted recording of magnetic media using an optical resonant cavity and nano-pin power delivery device: The media heating device of the magnetic head includes an optical resonant cavity and a nano-pin that produces a high intensity near-field optical beam of sub-wavelength dimension adjacent to the write pole. The cavity is fabricated as a planar thin film structure in layers that are generally parallel to the... Agent: Intellectual Property Law Offices

20080151429 - Magnetic disk device: Embodiments of the present invention provide a magnetic disk device that can reduce an external force applied to the carriage. According to one embodiment, in a magnetic disk device, a bracket inserted between a carriage and a base is supported toward the base side by support portions owned by the... Agent: Townsend And Townsend And Crew LLP

20080151430 - Adjustment of pitch and roll static torques in a disk drive head gimbal assembly: In a system and method for adjusting a static torque on a slider in a head-gimbal assembly, a substantially rigid mass is placed on an air-bearing surface (ABS) of a slider. A static attitude of the slider is measured, and an adjustment location and intensity for a flexure to yield... Agent: Kenyon & Kenyon LLP

20080151431 - Thermally assisted magnetic head: A thermally assisted magnetic head has a medium-facing surface facing a medium, and comprises: a waveguide an end face of which is exposed in the medium-facing surface; an electroconductive near-field light generator plate disposed on a medium-facing surface of the waveguide so that a principal face thereof faces the medium;... Agent: Oliff & Berridge, Plc

20080151432 - High frequency interconnect signal transmission lines: A micro-electromechanical signal transmission line is made from an electrically conductive material. It has a first distal end and a second distal end. The second distal end is free to move with respect to said first distal end. There exists an unsupported region between the first distal end and the... Agent: Hitachi C/o Wagner Blecher LLP

20080151433 - Disk drive device and carriage of actuator used therein: Embodiments of the present invention help to suppress performance degradation in an actuator of a disk drive device when attaching a damping member to a single surface of an arm. According to one embodiment, in a HDD a damping member is attached to a single surface of an arm. A... Agent: Townsend And Townsend And Crew LLP

20080151434 - Low friction load/unload lift tab: A transducing system includes a support assembly for supporting a transducer and a lift tab extending from the support assembly. The lift tab has a surface configured to lift the support assembly carrying the transducer up a load/unload ramp. The surface of the lift tab has a radius of curvature... Agent: Kinney & Lange, P.a.

20080151436 - Magnetic recording method using ferromagnetic resonance and thin-film magnetic head for using the method: Provided is a thin-film magnetic head capable of writing data with high accuracy on a magnetic recording medium having high coercive force without heating. The head comprises an electromagnetic coil element comprising: a main magnetic pole; an auxiliary magnetic pole; and a write coil formed so as to pass through... Agent: Oliff & Berridge, Plc

20080151435 - Storage apparatus, method of detecting failure in head of storage apparatus, and storage medium storing failure detection program: A storage apparatus according to the present invention comprises: a read section that receives a predetermined electrical parameter to read out data from a recording medium; a characteristic detection section that detects a plurality of characteristic values which are predetermined indicators of the read section corresponding to the plurality of... Agent: Greer, Burns & Crain

20080151438 - Magnetoresistive element: The invention provides a magnetoresistive element including a seed layer having a flat surface, which makes it possible to improve the flatness of all of the elements. A seed layer is formed in a two-layer structure of a first seed layer that is formed on a lower shield layer and... Agent: Brinks Hofer Gilson & Lione

20080151437 - Perpendicular magnetic recording head including wrap around shield with notched top write gap and method of fabricating the same: In a perpendicular recording head, a notch is formed in the top write gap at a location on top of the main pole. A perpendicular head with this notched top write gap structure has less transition curvature and better writability while reducing the adjacent track interference (ATI). Also, the process... Agent: Silicon Valley Patent Group LLP

20080151441 - Magnetoresistive sensor having an anisotropic hard bias with high coercivity: A magnetoresistive sensor having magnetically anisotropic bias layers for biasing the free layer of the sensor. The sensor includes a sensor stack with a pinned layer structure and a free layer structure and having first and second sides. Hard bias structures for biasing the magnetization of the free layer are... Agent: Zilka-kotab, Pc- Hit

20080151442 - High iron free layer for magnetic tunnel junction sensors: An improved formulation for free layers in MTJ sensors is disclosed. Optimized results of the prior art suggest free layer iron concentrations less than 20 atomic % give the best performance. The present invention discloses improved TMR ratio, Hce, and λ performance for high free layer iron concentrations between about... Agent: D'arcy H. Lorimer

20080151440 - Method for fabricating a three terminal magnetic sensor for magnetic heads with a semiconductor junction: The TTM sensor includes a semiconductor structure and a spin valve structure, where the semiconductor structure includes at least two layers. Two of the three leads of the TTM sensor are engaged to the semiconductor layers, where a semiconductor junction between the layers is disposed between the two leads. Generally,... Agent: Intellectual Property Law Offices

20080151439 - Tmr sensor having magnesium/magnesium oxide tunnel barrier: A tunnel junction magnetoresistive sensor having improved TMR performance (dR/R) and improved area resistance. The sensor includes a barrier layer sandwiched between a magnetic pinned layer structure and a magnetic free layer structure. The barrier layer includes a thin layer of Mg and a layer of MgOx. The barrier layer... Agent: Zilka-kotab, Pc- Hit

20080144206 - Data storage apparatus including optically active nano-patterned media and electric field assisted recording method: An apparatus comprises a data storage medium including a magnetic recording element and an optically active material positioned adjacent to the magnetic recording element, an electric field source for applying an electric field to a portion of the data storage medium, a source of electromagnetic radiation for irradiating the data... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20080144207 - Storing ad sampled data of read/write channel into ecc sram: An embodiment in accordance with the present invention enables storing in a memory, multi-bit data corresponding to analog signals read from a medium before being converted to single-bit data as recorded data. In an embodiment of the present invention, an AD converter is configured to convert analog signals from a... Agent: Townsend And Townsend And Crew LLP

20080144208 - Multiple disks in a single disk package: A disk drive having a single drive motor and multiple platters that incorporates two discrete data paths, actuators and heads to the disk platters. Utilizing the economy of very large capacity disk platters, two or more disk drives can be created within a single physical enclosure. These two disks will... Agent: James M. Stover Teradata Corporation

20080144209 - Hard disk drive and command execution method: There is provided with command execution method, including; detecting a use situation of a non-volatile memory; selecting, when the use situation is low, the command which enables the disk head to be located at a start position of writing or reading most rapidly from among the write commands and the... Agent: Amin, Turocy & Calvin, LLP

20080144210 - Single-pass self-servowriting method and system employing a low sector rate startup procedure: A self-servowriting (SSW) method that, with the actuator fully engaged against a compliant structure (e.g., a crashstop), first writes a tightly-spaced open-loop sequence of servo bursts in a segmented spiral path and then continues writing this tightly-spaced sequence under closed-loop servo control while reading back amplitude information from the servo... Agent: Terrance A. Meador Incaplaw

20080144211 - Servo techniques that mitigate an effect of read and write velocity variations on position error signal calculations: In general, the invention is directed to servo techniques that make use of time-based servo patterns that can substantially mitigate error in a position error signal (PES) calculation resulting from a variation in tape velocity. A servo pattern including at least three marks is written using a single pulse and... Agent: Imation Corp.

20080144212 - Fixing mechanism for recording medium: A recording medium mounted on the rotary body in a recording medium drive. First and second fixing members sandwiches the recording medium around the rotary body. An elastic member is interposed at least between the first fixing member and the recording medium. The elastic member serves to enhance the friction... Agent: Kratz, Quintos & Hanson, LLP

20080144214 - Magnetic write head with thermoelectric cooling device: An apparatus comprises a magnetic write pole, and a cooling device positioned adjacent to the magnetic write pole. The magnetic write pole can comprise a rare earth metal, or an alloy including a rare earth metal. A method of using a cooling device to increase a magnetic moment of a... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20080144213 - Perpendicular magnetic recording medium with laminated magnetic layers separated by a ferromagnetic interlayer for intergranular exchange-coupling enhancement: A perpendicular magnetic recording layer (RL) structure has multiple granular ferromagnetic layers (MAGs) that are separated by ferromagnetic exchange-coupling layers (ECLs) as interlayers between the MAGS. The ECLs provide effective intergranular exchange-coupling in the MAGs. Each MAG is sufficiently thick to support independent recording states that are thermally stable, and... Agent: Thomas R. Berthold

20080144215 - Electrical lapping guide for flare point control and trailing shield throat height in a perpendicular magnetic write head: A method for constructing a magnetic write head using an electrical lapping guide to carefully control critical dimensions dining a lapping operation used to define an air bearing surface. The lapping guide is photolithographically patterned in a common photolithographic step with another write head structure so that special relation between... Agent: Zilka-kotab, Pc- Hit

20080144216 - Thin film magnetic head: A thin film magnetic head is disclosed that is capable of improving the thermal efficiency of a heater. A thin film magnetic head includes: a lower shield layer; an upper shield layer; a reproducing element that is provided between the lower shield layer and the upper shield layer; a recording... Agent: Brinks Hofer Gilson & Lione

20080144218 - Patterned magnetic medium, magnetic recording medium and magnetic storage device: A patterned magnetic medium includes: a substrate; a soft magnetic underlying film, a nonmagnetic film, an intermediate film and a recording layer which are formed on a principal surface of the substrate; a first protective film formed in contact with the recording film; a second protective film formed in contact... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080144217 - Patterned magnetic recording medium and method of manufacturing the same: Provided are a patterned magnetic recording medium and a method of manufacturing the same. The patterned magnetic recording medium include: a substrate; and a plurality of magnetic recording layers arranged at predetermined intervals, wherein the magnetic recording layers are formed of an alloy including Co, Pt, and Ni. The patterned... Agent: Sughrue Mion, Pllc

20080144219 - Conductive pfpe disk lubricant: Embodiments of the invention generally relate to PFPE lubricants, and more specifically to increasing the conductivity of PFPE lubricants. PFPE lubricants generally have low polarity and do not dissolve most conductive additives that tend to be highly polar. However, hydrophobic ionic liquids are highly fluorinated and have low polarity. Therefore,... Agent: Patterson & Sheridan, L.l.p.

20080144220 - Perpendicular recording head having controlled permeability and saturation moment: A method and apparatus having magnetic properties. The apparatus includes a main pole and a return pole spaced apart from the main pole. The return includes at least one multilayer block having a plurality of alternating layers of magnetic material and non-magnetic material. The return pole also includes a single... Agent: Seagate Technology Llc C/o Westman Champlin & Kelly, P.a.

20080144221 - Head, head suspension assembly, and disk device provided with the same: According to one embodiment, a head of a disk device has a slider and a head portion disposed on the slider. The slider has a facing surface opposed to a surface of a rotatable recording medium and is flown by an airflow. The facing surface of the slider has a... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080144222 - Head slider capable of being reliably released from effect of moving recording medium: A medium-opposed surface of a slider body is hemisected into first and second areas by the centerline extending in the longitudinal direction of the slider body. The second area is designed to generate a positive pressure larger than that generated at the first area when a load acting on the... Agent: Greer, Burns & Crain

20080144223 - Magnetic disk drive and suspension assembly adopted therein: Embodiments of the present invention provide a suspension assembly having a dielectric limiter. According to one embodiment, the suspension assembly includes a load beam and a flexure assembly. The flexure assembly includes a metal layer where there are formed a fixing portion fixed to the load beam, main rings, and... Agent: Townsend And Townsend And Crew LLP

20080144224 - Head gimbal assembly for use in disk drive devices and method of making the same: Systems and methods for accurate position adjustment of thin-film PZT micro-actuators are provided. In certain example embodiments, a head gimbal assembly is provided. A suspension includes a suspension flexure located at one end of the suspension, and the suspension flexure includes a tongue region. At least one micro-actuator is mounted... Agent: Nixon & Vanderhye, Pc

20080144225 - Techniques for reducing flexure distortion and gimbal separation for thin-film pzt micro-actuators of head gimbal assemblies: Systems and methods for reducing flexure distortion and/or gimbal separation for thin-film piezoelectric transducer (PZT) micro-actuators for head gimbal assemblies (HGA) of disk drive devices are provided. In certain example embodiments, a head gimbal assembly may comprise a suspension including a suspension flexure. The suspension flexure may include a micro-actuator... Agent: Nixon & Vanderhye, Pc

20080144227 - Magnetic storage device: A magnetic storage device with a significant reduction in power consumption. The magnetic storage device includes: a yoke which is arranged to cover part of a line extending in an arbitrary direction; and a magneto-resistive element which is arranged in contact with the yoke, thereby forming a closed magnetic circuit.... Agent: Mathews, Shepherd, Mckay, & Bruneau, P.a.

20080144226 - Magnetoresistive effect thin-film magnetic head with anti-ferromagnetic layer for magnetic domain control: A thin-film magnetic head includes a lower electrode layer, an MR multi-layered structure, through which a current passes in a direction perpendicular to a lamination plane, stacked on the lower electrode layer, soft magnetic layers for magnetic domain control formed on both sides in a track width direction of the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080144228 - Magnetic head and magnetic disk apparatus: According to one embodiment, a magnetic head includes a magnetoresistance element including a first spin valve layer, a bias layer, and a second spin valve layer sequentially arranged in the track direction, the first spin valve layer having a first magnetization free layer including a ferromagnetic film, the second spin... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080144230 - Magnetic head and magnetic recording-reproducing apparatus: c

20080144229 - Magnetoresistive sensor with overlaid combined leads and shields: An improved magnetic head for a hard disk drive including a lead overlaid read head in which the read width and read gap are reduced. The read width, which corresponds to the distance between the inner ends of the overlaid electrical leads, is reduced by the fabrication of a thin... Agent: Intellectual Property Law Offices

20080144231 - Magnetoresistive head, magnetic storage apparatus and method of manufacturing a magnetic head: Embodiments of the present invention provide a magnetic head incorporating a CPP-GMR device having a high output at a suitable resistance. According to one embodiment, in a Current Perpendicular to Plane-Giant Magneto Resistive (CPP-GMR) head comprising a pinned layer, a free layer, and a current screen layer for confining current... Agent: Townsend And Townsend And Crew LLP

20080144232 - Cpp reader with phase detection of magnetic resonance for read-back: An apparatus includes a magnetically biased multilayer structure having a reference layer and a free layer separated by a spacer layer; a DC current source connected to the multilayer structure; an AC current source connected to the multilayer structure; and a phase detector for measuring a phase difference between an... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20080144234 - Current-perpendicular-to-plane sensor with dual keeper layers: This invention provides a CPP TMR or GMR sensor with an amorphous ferromagnetic lower keeper layer and a crystalline ferromagnetic upper keeper layer. The amorphous ferromagnetic lower keeper layer strongly exchange-couples to an underlying antiferromagnetic pinning layer and planarizes its rough surface. The crystalline ferromagnetic upper keeper layer strongly antiparallel-couples... Agent: Zilka-kotab, Pc- Hit

20080144235 - Cpp magnetoresistive head for data storage applications: A magnetoresistive sensor and method for forming the magnetoresistive sensor. The magnetoresistive sensor includes a first layer and an antiparallel free layer disposed on the first layer. The antiparallel free layer includes a first free layer disposed on the first layer and a first ferromagnetic coupling free layer disposed on... Agent: Patterson & Sheridan, L.l.p.

20080144233 - Tunnel magnetoresistance effect device, and a portable personal device: A TMR device comprising an antiferromagnetic layer made of an antiferromagnetic material containing Mn, a magnetization fixed layer made of a ferromagnetic material, a tunnel barrier layer made of a dielectric material, and a magnetization free layer made of a ferromagnetic material. An insulator material layer is inserted in the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080137223 - Storage medium housing device: In a magnetic tape device, upon receiving a magnetic tape cartridge from an insertion slot, an authentication unit reads data that is stored in an electronic tag and based on the read data, checks validity of the magnetic tape cartridge. A robot conveys only a valid magnetic tape cartridge to... Agent: Staas & Halsey LLP

20080137224 - High frequency field assisted write device: A magnetic writer includes a write element and an oscillation device disposed adjacent to the write element. The first oscillation device includes a first magnetic layer, a second magnetic layer having a magnetization vector including a component perpendicular to a major plane of the first magnetic layer. The first nonmagnetic... Agent: Kinney & Lange, P.a.

20080137225 - Apparatus, system, and method for detection of fly height margin using controlled excitation of air bearing mode: An apparatus, system, and method are disclosed for fly height detection. The apparatus includes an actuator configured to induce vibrations in a glide head that is configured to detect physical asperities on a disk surface. The apparatus may also include a second end of the suspension arm coupled with the... Agent: Kunzler & Mckenzie

20080137226 - Method and apparatus for testing servo data on a disk medium in a disk drive: According to one embodiment, in a disk drive having the function of performing a self-servo writing, the CPU is configured to calculate correction values for only those of servo tracks which have been designated and to store the correction values in servo sectors, when a process of calculating STW-RRO correcting... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080137227 - Disk drive and method of retracting head thereof: Embodiments of the present invention relate to retracting a magnetic head of a disk drive device to a retract position in accordance with a fall state, and to suppressing the performance degradation due to erroneous fall determinations as well as occurrence of damage by a head-disk crash. According to one... Agent: Townsend And Townsend And Crew LLP

20080137228 - Magnetic disc drive: A magnetic disc drive includes a head that is configured to record information in a recording medium or reproduce the information from the recording medium, a housing that houses the recording medium and the head, and a vibration damping mechanism that reduces a vibration of the housing, and includes a... Agent: Greer, Burns & Crain

20080137229 - Hydrodynamic bearing device, spindle motor including the same, and information recording and reproducing apparatus: A hydrodynamic bearing device includes a sleeve, a shaft, a lubricant, a plurality of lube repellent application areas, and a lube repellent non-application area. The sleeve has an insertion hole as a bearing hole on at least one end. The shaft is inserted into the insertion hole of the sleeve... Agent: Wenderoth, Lind & Ponack L.l.p.

20080137230 - Emi protective magnetic read head: An EMI protective magnetic read head for use in a magnetic rule position feedback system to read signal from a magnetic rule is disclosed to include a sensor for reading signal from a magnetic rule, and an outer shell that houses the sensor and is made out of a magnetic... Agent: Charles E. Baxley, Esq.

20080137231 - Magnetic recording medium and method of fabricating the same: Provided are a magnetic recording medium and a method of fabricating the same. The magnetic recording medium includes a substrate; and a recording layer, wherein the recording layer is formed of a plurality of magnetic dots, and a non-magnetic region that is formed on the substrate to isolate each of... Agent: Sughrue Mion, Pllc

20080137232 - Slider support arrangement: A slide apparatus that provides horizontal support to a disc drive blade is described. The slide apparatus essentially includes a slider beam, a guide rail, a chassis and a retaining member. The slider beam possesses a slotted feature that extends at least partially along the length of the slider beam.... Agent: Spectra Logic C/o Hiscock & Barclay, LLP

20080137233 - Head support mechanism, magnetic head assembly, and magnetic disk drive apparatus: A head support mechanism includes a suspension for supporting a magnetic head slider with a thin-film magnetic head, having a slider mounting section on which the magnetic head slider is fixed, and a heating unit formed on the slider mounting section of the suspension. The heating unit is capable of... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.

20080137234 - Head stack assembly and hard disk drive comprising the same: The head stack assembly of a hard disk drive includes a bobbin, and a printed circuit board attached to the bobbin. The bobbin forms an end of the head stack assembly that is rotatable about an axis of a shaft. The printed circuit board has a flat conductive pattern of... Agent: Volentine & Whitt Pllc

20080137235 - High areal density tape head: A tape head designed for transducing data on a magnetic recording tape that is subject to tape dimensional changes. The tape head includes two or more arrays of transducer elements having different transducer spacing distances corresponding to different track spacing distances to be transduced. One of the transducer arrays may... Agent: Walter W. Duft

20080137236 - Magnetic read head having increased electron exchange: A magnetic head of either CIP or CPP configuration is disclosed, having a read sensor with a strongly pinned ferromagnetic layer due to increased electronic exchange with the AFM layer. The read sensor includes a lower seed layer whose material is chosen from a group consisting of Ta, NiFeCr, NiFeCoCr,... Agent: The Patent Law Office Of Larry Guernsey

20080137237 - Magnetoresistive sensor having a hard bias buffer layer, seed layer structure providing exceptionally high magnetic orientation ratio: A magnetoresistive sensor having magnetically anisotropic bias layers for biasing the free layer of the sensor. The sensor includes a sensor stack with a pinned layer structure and a free layer structure and having first and second sides. Hard bias structures for biasing the magnetization of the free layer are... Agent: Zilka-kotab, Pc- Hit

20080130152 - Manufacturing method of floating head, manufacturing method of storage device, and floating head inspecting apparatus: A method of manufacturing a floating head includes an inspecting step for inspecting performance of the floating head by simulating different environmental conditions, the inspecting step includes the steps of setting an electrical power to a heat generating material provided to the floating head to attain the flying height fluctuation... Agent: Greer, Burns & Crain

20080130153 - Hard disk drive apparatus and method of deciding data format of hard disk drive apparatus: A method of deciding a data format of a hard disk drive that includes assigning to a sector existing in a data zone of a disk a logical block address larger than a logical block address of a sector existing in an other data zone existing at an inner circumference... Agent: Stanzione & Kim, LLP

20080130154 - Preservation of hard drive data via preliminary detection of adjacent track interference potential: Systems and methods for managing adjacent track interference in a hard drive. Adjacent track interference potential is ascertained in at least one track, and data corruption is averted via scrubbing data in at least one track with ascertained adjacent track interference potential.... Agent: Ference & Associates Llc

20080130155 - Thermally assisted magnetic recording head support mechanism: [Solution] The thermally assisted magnetic recording head support mechanism is made up such that a suspension 5 has one end holding a slider 4 on which a magnetic head 3 having a read element 31, write element 32, and an optical near-field transducer 34 is mounted, and the other end... Agent: Antonelli, Terry, Stout & Kraus, LLP

20080130158 - Apparatus for reducing sensitivity of an article to mechanical shock: Apparatus for reducing sensitivity of an article to mechanical shock comprises a frame; first and second planar masses mounted in the frame for bi-directional movement relative to the frame along a first axis of displacement; a first lever pivotable about a first fulcrum secured to the frame; the lever having... Agent: Louis Paul Herzberg

20080130156 - Disk drive with nonvolatile memory for storage of failure-related data: A disk drive that includes nonvolatile memory monitors the drive's reliability-related parameters to detect real or potential failure events, and records failure-related data in nonvolatile memory, rather than in reserved areas of the disks. The monitoring may be by running a diagnostic routine or by regular or periodic monitoring of... Agent: Thomas R. Berthold

20080130157 - Recording medium, recording apparatus and method, reproducing apparatus and method, and computer program: A recording medium (100) on which record information is recorded, wherein the recording medium is displaced relatively with respect to a recording/reproducing device (60) for performing at least one of recording and reproduction of the record information, along each of one direction (X-axis) and another direction (Y-axis), and a track... Agent: Nixon & Vanderhye, Pc

20080130159 - Disk drive with head fly-height compensation for disk surface variations: A disk drive has a head fly-height actuator wherein the head-disk spacing is controlled as a function of both the track, and the sector or sectors within the track, where data is to be read or written. The fly-height actuator may be a thermal actuator comprising a heater located on... Agent: Thomas R. Berthold

20080130161 - Hard disk drive protection system and method: A hard disk drive protection system comprises a sensor configured to detect an impending shock event and a hard drive protection module configured to determine whether to issue a fast park command for a hard disk drive in response to detecting the impending shock event based on a permissible quantity... Agent: Hewlett Packard Company

20080130160 - Method and apparatus for writing servo data in a disk drive using spiral servo patterns: According to one embodiment, a method of writing a target servo pattern constituting concentric servo tracks on a disk medium provided in a disk drive. In the method, a cumulative amplitude value of the waveform of each spiral servo pattern reproduced by the head of the disk drive is calculated,... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080130162 - Open loop ka calibration with low frequency compensation: A method of calibrating an actuator controller is discussed. The method includes using an open loop seek operation and compensating for a low frequency response to reduce the velocity at the end of the open loop seek operation.... Agent: Seagate Technology Llc C/o Westman Champlin & Kelly, P.a.

20080130163 - Magnetic recording/reproducing apparatus and tape-pulling-out element thereof: It is an object of the present invention to provide a magnetic recording/reproducing apparatus and its tape-pulling-out element capable of reliably holding a coupling element and stably carrying out tape threading. In a magnetic recording/reproducing apparatus, an end of a tape accommodated in a tape cassette 2 has a coupling... Agent: Kratz, Quintos & Hanson, LLP

20080130164 - Cartridge magazine and cartridge library apparatus: The cartridge magazine according to the present invention has a plurality of holding shelves holding a plurality of cartridges, each holding shelf being provided with a shutter opening mechanism (25) for opening a shutter of a cartridge along with insertion of a cartridge. Furthermore, it is provided with a shutter... Agent: Greer, Burns & Crain

20080130166 - Disk drive internal temperature control system: A disk drive internal temperature control system is disclosed. The internal temperature control system includes a disk drive temperature monitor for determining a temperature of the disk drive and for providing a measure of the temperature of the disk drive and a disk drive temperature manager for managing the temperature... Agent: Hitachi C/o Wagner Blecher LLP

20080130167 - Information storage device: The present invention aims to provide an information storage device realizing high cleaning performance. The information storage device includes: a plurality of disc-shaped information storage media that are rotated by being fixed to a common rotary shaft and record information, and in each of which through holes penetrating the disc-shaped... Agent: Greer, Burns & Crain

20080130165 - System including a hard disk drive and stray magnetic field sensor and associated method: A system includes a host device and a disk drive interfaced with the host device are described as well as an associated method. The disk drive includes a magnetic media for storing information using an actuator arrangement to perform a data access by moving at least one head proximate to... Agent: Workman Nydegger

20080130168 - Fluid dynamic pressure bearing device, spindle motor provided with fluid dynamic pressure bearing device, and recording disk drive device: A fluid dynamic pressure bearing device includes a first capillary seal (50) formed between an outer circumferential surface of a bearing member 20 and an internal circumferential surface of a seal member (30). A second capillary seal portion (60) is formed between an outer circumferential surface of a shaft member... Agent: Oliff & Berridge, Plc

20080130169 - Spindle motor and disk device provided with the same: According to one embodiment, a disk device includes a recording medium, a spindle motor which supports and rotates the recording medium, a head, and a head actuator which supports the head for movement. The spindle motor includes a rotor, a fluid bearing which supports the rotor for rotation, a cylindrical... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080130170 - Perpendicular magnetic recording medium: Embodiments of the present invention help to provide an excellent perpendicular recording medium of high medium signal-to-noise (S/N) and with suppressed blurring in writing. According to one embodiment, a perpendicular recording layer is provided by way of a negative magnetic strain soft-magnetic underlayer above a substrate applied with texturing in... Agent: Townsend And Townsend And Crew LLP

20080130171 - Calcium aluminosilicate glasses for use as information recording medium substrates: A glass substrate, and a information recording medium comprised of a glass substrate, comprising an a alkali-containing calcium aluminosilicate glass comprising SiO2, Al2O3, CaO, and alkali oxides (Li2O+Na2O+K2O) as essential components, specifically comprising the following components, expressed in terms of mole percent (mol %): 55-70% SiO2, 4-15% Al2O3, 0-8% B2O3,... Agent: Corning Incorporated

20080130172 - Magnetic recording medium, magnetic recording apparatus, and method of manufacturing magnetic recording medium: This invention relates to a magnetic recording medium that magnetically records information, and the like. The magnetic recording medium enhances write-reception performance by reducing the distance between a recording layer and a backing layer while maintaining low noise performance. The magnetic recording medium has a non-magnetic substrate, a backing layer... Agent: Greer, Burns & Crain

20080130173 - Method and apparatus supporting a slider having multiple deflection rails in a negative pressure pocket for a hard disk drive: An air bearing surface, with multiple deflection rails in a negative pressure pocket, between a leading air bearing surface and a central island for the read-write head. A gap separates left and right deflection rails. During the slider's normal operation, incoming particles may collide with at least one of the... Agent: Gregory Smith & Associates

20080130174 - Fixing method, head support mechanism and information recording apparatus: The present invention aims to accurately fix members together and includes: an arranging process in which a cylindrical section of a second member of which inner wall has a noncircular cross-sectional shape is inserted into a bore made in a first member and the second member is placed relative to... Agent: Greer, Burns & Crain

20080130175 - Head gimbal assembly of hard disk drive: A head gimbal assembly (HGA) of a hard disk drive (HDD) includes a flexure, a slider attached to the flexure and including a magnetic head, a plurality of pads at a side of the slider, a plurality of traces attached to and supported by the flexure and respectively bonded to... Agent: Stanzione & Kim, LLP

20080130176 - Magnetoresistive effect element and magnetic memory: A magnetoresistive effect element includes a nonmagnetic layer having mutually facing first and second surfaces. A reference layer is provided on the first surface and has a fixed magnetization direction. A magnetization variable layer is provided on the second surface, has variable magnetization direction, and has a planer shape including... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.c.