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Dynamic magnetic information storage or retrieval August inventions list 08/09

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
08/27/2009 > patent applications in patent subcategories. inventions list

20090213482 - Apparatus and method for writing data onto a tape: An apparatus and method for writing data to be played back onto a tape is provided. Included is an acquisition unit for acquiring data to be written onto the tape, a writing unit for writing the data to the tape, and a determination unit for determining a data amount of... Agent: International Business Machines Corporation

20090213483 - Magnetic head drive device and magnetic recording/reproducing device using this drive device: A magnetic head drive device drives a heater element for controlling a protrusion amount of the magnetic head. The heater drive circuit of the heater element of the magnetic head, in which a read element, a write element and a heat element is included, is constructed by the PWM modulation... Agent: Greer, Burns & Crain

20090213484 - Techniques for providing dc-free detection of dc equalization target: A data storage device includes a first filter that generates a short DC equalization target in response to a read back signal generated from magnetic patterns that are recorded on a storage medium using perpendicular recording. The data storage device also includes a first detector that generates an output sequence... Agent: Steven J. Cahill/ Hitachi Gst

20090213485 - Reproducing apparatus and recording apparatus: A reproducing apparatus includes a recording medium mounting detection unit configured to detect that a detachable recording medium is mounted, and a file analysis unit configured to analyze a file recorded in the recording medium. When the recording medium mounting detection unit detects that the recording medium is mounted, representative... Agent: Canon U.s.a. Inc. Intellectual Property Division

20090213486 - Data recording device: A data recording device for storing data, the data recording device includes: a medium for storing data; a head assembly including a read element for reading out data stored in the medium and a heater for controlling a distance between the read element and the medium within a predetermined range... Agent: Greer, Burns & Crain

20090213487 - Efficient method to detect disk write errors: A write error detection mechanism for a computer data disk drive or storage controller writes and then verifies data to detect disk write errors. It allows the heads to be moved to other tracks to do other jobs in the time it takes the disk to rotate from the point... Agent: Gregory Smith

20090213489 - Method and system for servo stripe width detection and compensation: A method and system for servo stripe width detection and compensation including moving a magnetic tape in a first direction across a magnetic tape head, the magnetic tape having a servo band including a first servo pattern and a second servo pattern, the magnetic tape head having a servo element;... Agent: Hamilton & Terrile, LLP Ibm Tucson

20090213488 - Methods, systems and apparatus for reducing the effects of tape dimensional stability: A method, system, apparatus, and computer readable medium storing instructions for recording data tracks and a method and system for reading data tracks. For recording data tracks, virtual boundary of a first data track recorded on the storage medium is determined. The recording element is positioned based on the determined... Agent: Sughrue Mion, Pllc

20090213490 - Pass-through mechanism for linear tape library: A pass-through mechanism that couples a first linear tape library string to a second linear tape library string is maintained. A first robotic assembly associated with the first linear tape library string places a tape from the first linear tape library string into the pass-through mechanism. The pass-through mechanism moves... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090213491 - Information storage device with a bridge controller and a plurality of electrically coupled conductive shields: A novel information storage device is disclosed and claimed. The information storage device includes a disk drive, a disk drive printed circuit board, and a first conductive shield over the disk drive printed circuit board and electrically coupled to the disk drive. The information storage device also includes a bridge... Agent: Western Digital Technologies, Inc. Attn: Lesley Ning

20090213493 - Apparatus, system, and method for tape drive head: An apparatus, system, and method are disclosed for a tape drive head. An upper servo element reads an upper servo track conforming to a specified format. A lower servo element reads a lower servo track conforming to the specified format. A mid servo element reads a mid servo track. The... Agent: Kunzler & Mckenzie

20090213492 - Method of improving stability of domain polarization in ferroelectric thin films: A memory device comprises a ferroelectric media comprising at least one ferroelectric film. The ferroelectric film has an as-grown spontaneous polarization of a first direction. A tip is position over the ferroelectric film and a first voltage is applied to the tip larger than a switching voltage of the ferroelectric... Agent: Fliesler Meyer LLP

20090213494 - Perpendicular magnetic recording system and medium with high-moment corrosion-resistant \"soft\" underlayer (sul): A perpendicular magnetic recording disk has a soft magnetic underlayer (SUL) that has high corrosion resistance as well as high moment. The material of the SUL is an alloy comprising Co, Fe, X, and Y; where X is Ta or Nb, Y is Zr or Hf, and the combined amount... Agent: Hitachi Global Storage Technologies, Inc.

20090213495 - Use of grating structures to control asymmetry in a magnetic sensor: The present invention provides apparatus and method for controlling the asymmetrical properties of the response of a magnetic sensor element to a magnetic field produced by the digital data in a magnetic storage device. The present invention also provides an apparatus and method for controlling the bias point of a... Agent: Brooks Kushman P.c. / Sun / Stk

20090213496 - Perpendicular magnetic recording head and method for manufacturing the same: Embodiments of the present invention provide a perpendicular magnetic recording head including a coil having small resistance. According to one embodiment, a nonmagnetic insulating layer formed on a main magnetic pole and a magnetic yoke are etched to form a recessed portion. The thickness of a conductive layer is increased... Agent: Townsend And Townsend And Crew LLP

20090213497 - Magnetic recording medium and manufacturing method thereof: Embodiments of the present invention provide recording area separated magnetic recording media (DTMs, BPMs) allowing magnetic heads to fly lower. According to one embodiment, the recording area separated magnetic recording media are configured so that magnetic recording layers have parts with the relatively higher element ratio of a ferromagnetic material,... Agent: Townsend And Townsend And Crew LLP

20090213498 - Disk drive device: Embodiments of the present invention provide a highly reliable hard disk drive (HDD). In an HDD according to an embodiment of the present invention, solder at a solder joint for joining a pad of a head slider and a pad of a transmission wiring comprises the main component of Sn... Agent: Townsend And Townsend And Crew LLP

20090213499 - Ramp mechanism and magnetic disk apparatus: A hard disk drive is provided with a ramp mechanism at the side of the disks for holding head sliders when the disks do not rotate. The ramp mechanism includes a ramp unit at least partially opposed to an outer edge of each disk medium. A roller provided in the... Agent: Greer, Burns & Crain

20090213500 - Actuator latch system of hard disk drive: An actuator latch system of a hard disk drive selectively locks in place and releases a rotatable swing arm having a front end portion supporting a magnetic head and a rear end portion on which a voice coil motor (VCM) coil is disposed. The actuator latch system includes a notch... Agent: Volentine & Whitt Pllc

20090213501 - Composite thin-film magnetic head, magnetic head assembly and magnetic disk drive apparatus: A composite thin-film magnetic head includes a substrate; a first insulation layer laminated on the substrate; an MR read head element formed on the first insulation layer and provided with a lower shield layer, an upper shield layer and an MR layer in which a sense current flows in a... Agent: Frommer Lawrence & Haug LLP

20090213502 - Magneto-resistance effect element having stack with dual free layer and a plurality of bias magnetic layers: A magneto-resistance effect element comprises: a magneto-resistance effect stack including an upper magnetic layer and a lower magnetic layer whose magnetization directions change in accordance with an external magnetic field, a non-magnetic intermediate layer sandwiched between the upper and lower magnetic layers; an upper shield electrode layer and a lower... Agent: Knobbe Martens Olson & Bear LLP

20090213503 - Magnetic tunnel junction device: A magnetic tunnel junction (MTJ) (10) employing a dielectric tunneling barrier (16), useful in magnetoresistive random access memories (MRAMs) and other devices, has a synthetic antiferromagnet (SAF) structure (14, 16), comprising two ferromagnetic (FM) layers (26, 41; 51, 58; 61, 68) separated by a coupling layer (38, 56, 66). Improved... Agent: Ingrassia Fisher & Lorenz, P.c.

  
08/20/2009 > patent applications in patent subcategories. inventions list

20090207515 - Error correction capability for longitudinal position data in a tape storage system: and representing a longitudinal position of a magnetic tape relative to a tape head in a tape storage system. A word type is determined in response to at least one of the plurality of LPOS symbols and, in response to the determined word type, at least one formatted symbol F(n)... Agent: Law Firm Of Dan Shifrin

20090207516 - Iterative repeatable run-out nulling for magnetic head tester: A method for operating a head testing apparatus or, more generally, a host hard disk drive using a mounted hard disk that has had its servo track information pre-written in an external servo-writing apparatus rather than in the head testing or host apparatus itself. The method eliminates repeatable errors and... Agent: Saile Ackerman LLC

20090207517 - \"flat analog\" afe coupled with an all digital architecture compensation read channel: Reading data from a magnetic storage media with an analog front end (AFE) coupled to an all digital read channel compensation architecture. A read head passes over magnetic storage media to produce an analog signal. The analog signal is amplified such that the range of the amplified analog signal substantial... Agent: Garlick Harrison & Markison

20090207518 - Microdisk array apparatus using semiconductor automated equipment: The present invention discloses a microdisk array apparatus using semiconductor automated equipment, and the apparatus is installed into a space of a 3.5-inch IDE hard disk of the semiconductor equipment to substitute the hard disk directly. The apparatus includes a frame, and the frame has a connecting interface, a disk... Agent: Bacon & Thomas, PLLC

20090207519 - Compensating the effects of static head-media spacing variations and nonlinear transition shift in heat assisted magnetic recording: An apparatus comprises a storage medium, a recording head, a source of electromagnetic radiation, and a control circuit for modulating the source of electromagnetic radiation in response to a static deviation of a spacing between the recording head and the storage medium. A method of compensating a static deviation of... Agent: Pietragallo Gordon Alfano Bosick & Raspanti, LLP

20090207520 - Systems and methods for managing power for data storage devices: An information handling system may include a processor, a tape drive coupled to the processor, and a cache control module. The cache control module may be configured to receive a request from the processor for the tape drive; determine whether the tape drive is powered off; determine whether the tape... Agent: Baker Botts, LLP

20090207521 - Techniques for improving parallel scan operations: Various technologies and techniques are disclosed for improving performance of parallel scans. Disk head randomization that occurs when performing a parallel scan is minimized by assigning a worker entity to each disk involved in the parallel scan, and by ensuring data is only accessed on a respective disk by the... Agent: Microsoft Corporation

20090207522 - Magnetic recording medium, recording/reproducing apparatus, and stamper: On a magnetic recording medium, M sets of burst patterns are formed along a direction of rotation of a substrate in each burst pattern region, where M is a natural number of two or higher. Each burst pattern is formed so as to include two types of burst signal units... Agent: Greenblum & Bernstein, P.L.C

20090207523 - Magnetic recording medium and magnetic recording apparatus: A magnetic recording medium formed on a substrate. The magnetic recording medium includes a data region including a plurality of magnetic dots arranged at predetermined positions on the substrate, for recording information; and a servo region for specifying the positions of the magnetic dots, the servo region including a plurality... Agent: Greer, Burns & Crain

20090207524 - Tape heads for use with multiple tape formats: A magnetic head according to one embodiment includes an array of elements, the elements being selected from a group consisting of data readers, data writers, and combinations thereof; wherein a first subset of the elements is operable for reading or writing data in a first tape format, wherein a second... Agent: Zilka-kotab, PC- Ibm

20090207525 - Perpendicular write head with tapered main pole: Prior art designs of single pole writers have been limited by premature saturation at the tip. This limits the head field that can be achieved without simultaneously widening the write profile. This problem has bee solved by means of a vertical main pole whose thickness has its conventional value a... Agent: Saile Ackerman LLC

20090207526 - Head support device, disk device having the head support device, and portable electronic device having the disk device: A head support device allowing a further increase in shock resistance against an external impact, a disk device having the head support device, and a portable electronic device having the disk device are disclosed. In the head support device, head support arm on which head slider with a head is... Agent: Wenderoth, Lind & Ponack L.L.P.

20090207527 - Perpendicular magnetic recording medium, perpendicular magnetic recording device using the same, and method for manufacturing perpendicular magnetic recording medium: In a magnetic recording medium, there are realized an improvement in surface planarity and a reduction in characteristic degradation. The magnetic recording medium is fabricated so that the upper layer of a recording layer and a refill layer are formed of the same material.... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090207528 - Disc flutter compensating suspension: A suspension is provided, which has proximal and distal ends and a longitudinal axis extending from the proximal end toward the distal end. A rotating hinge rotates the distal end about the longitudinal axis in response to vertical motion of the distal end relative to the proximal end. In one... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20090207529 - Flexible printed cable, head stack assembly with the same and manufacturing method thereof: A HSA includes a plurality of HGAs and an FPC. The FPC includes a connector for connecting with a control system, a voltage trace and a ground trace. A common voltage end of the voltage trace has a plurality of first voltage pads and a plurality of second voltage pads... Agent: Nixon & Vanderhye, PC

20090207530 - Disk drive device and magnetic disk drive: Embodiments of the present invention securely latch an actuator rotated by an external impact. In an embodiment of the present invention, a latch and an actuator have a structure in which the latch can latch the actuator at two different swing angles. The swing angle of the latch is an... Agent: Townsend And Townsend And Crew LLP

20090207531 - Magnetic recording and reproducing head and magnetic recording and reproducing device: A magnetic recording read head is provided capable of achieving high reproduction output, resolution, and SNR, even at a high linear density. There is also provided a magnetic recording and reproducing device capable of achieving sufficient error bit rate. The magnetic recording read head includes a differential read head and... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090207532 - Magneto resistance effect device, head slider, magnetic information storage apparatus, and magneto resistance effect memory: A magneto resistance effect device includes a fixed magnetization portion including a ferromagnetic material, in which the magnetization direction can be fixed, and a tunnel barrier layer including high band gap metal oxide and low band gap metal oxide, and arranged on the fixed magnetization portion. The device includes a... Agent: Greer, Burns & Crain

20090207533 - Cpp-type magneto resistance element having a pair of free layers and spacer layer sandwiched therebetween: A magnetic field detecting element includes: first and second free layers whose magnetization directions change in accordance with an external magnetic field; a spacer layer that is sandwiched between the first and second free layers; a first exchange coupling transmitting layer that is located adjacent to a surface of first... Agent: Knobbe Martens Olson & Bear LLP

20090207534 - Magneto-resistance effect element including stack with dual free layer and magnetized shield electrode layers: A magneto-resistance effect element comprises; a magneto-resistance effect stack including an upper magnetic layer and a lower magnetic layer in which respective magnetization directions change in accordance with an external magnetic field, a non-magnetic intermediate layer sandwiched between the upper and lower magnetic layers, an upper gap adjustment layer and... Agent: Knobbe Martens Olson & Bear LLP

  
08/13/2009 > patent applications in patent subcategories. inventions list

20090201598 - Disc drive device: Embodiments of the present invention precisely measure clearance variation by temperature change using a value in a RW channel. In an embodiment of the present invention, an HDD measures resolution by signals in a RW channel. The measured resolution shows variations depending on temperature according to two factors. One factor... Agent: Townsend And Townsend And Crew LLP

20090201599 - Recorder and recording method: A recorder of the present invention includes an optical disk drive section recording data on an optical disk, and a host section transferring data recorded on an arbitrary recording medium to the optical disk drive section to record the data on the optical disk, wherein the optical disk drive section... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090201600 - Thermally assisted magnetic head, head gimbal assembly, and hard disk apparatus: A thermally assisted magnetic head includes a main magnetic pole for writing and a near-field light generator provided near the main magnetic pole, the near-field light generator having a non-magnetic base metal layer, a non-magnetic upper metal layer, an intermediate insulating layer interposed between the base metal layer and the... Agent: Oliff & Berridge, PLC

20090201601 - Magnetic data eraser: A magnetic data eraser includes a power supply circuit, a receptacle for accommodating a magnetic recording medium or a device incorporating a magnetic recording medium, primary and secondary coils wound around an outer periphery of the receptacle. The primary coil is connected to the power supply circuit. The secondary coil... Agent: Wood, Phillips, Katz, Clark & Mortimer

20090201602 - Long-term asymmetry tracking in magnetic recording devices: A technique tracks head asymmetry of a magnetic recording device over time. In particular, a reference pattern having a known fundamental/reference frequency may be read from a reserved track of a magnetic recording medium to produce a response signal, and signal power may then be determined at the reference frequency... Agent: Cesari And Mckenna, LLP

20090201604 - Balanced linkage actuation of tape head: In one embodiment, first and second levers of a tape head actuator are balanced using first and second masses carried on first and second sides, respectively, of the first and second levers. The first and second levers are linked with a link member of the first mass which further includes... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090201603 - Moving magnet actuation of tape head: In one embodiment, a tape read/write head supported by a lever is biased in a first position, using magnetic attraction between a magnet supported by the lever, and a return path structure of magnetically permeable material. In the illustrated embodiment, the magnet centers itself, in the absence of a coil... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090201606 - Internally replenished enclosure: Internally replenished gas-containing enclosures and methods of internally replenishing an enclosure are described.... Agent: 3m Innovative Properties Company

20090201605 - Vibration-isolating support device: A vibration-isolating support device is used for supporting at least one storage device. The vibration-isolating support device includes a frame to accommodating the storage device, a plurality of elastic washers, and at least two support elements. The frame has at least two side plates, and each side plate is opened... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090201607 - Patterned perpendicular magnetic recording medium and magnetic recording and reproducing apparatus: It is made possible to provide a patterned perpendicular magnetic recording medium that has smaller write magnetic field and the variation of magnetic characteristics in the bit regions, generates fewer reversed magnetic domains in the position control information regions of the head, and has excellent thermal stability. A patterned perpendicular... Agent: Nixon & Vanderhye, PC

20090201609 - Friction engaged tilting roller bearing tape guidance: In one embodiment, a tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090201608 - Magnetically biased tilting roller bearing tape guidance: In one embodiment, a tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090201610 - Tape guide rollers: A tape guide roller includes a first flange and a second flange separated by a barrel wherein at least one of the first flange and second flange comprise a soft material. The soft material can include acetal homopolymers, such as Delrin. It can also include soft metals, such as aluminum.... Agent: Hamilton & Terrile, LLP IBM Tucson

20090201611 - Perpendicular write head with tapered main pole: Prior art designs of single pole writers have been limited by premature saturation at the tip. This limits the head field that can be achieved without simultaneously widening the write profile. This problem has bee solved by means of a vertical main pole whose thickness has its conventional value a... Agent: Saile Ackerman LLC

20090201612 - Magnetoresistive device of the cpp type, and magnetic disk system: The invention provides a magnetoresistive device of the CPP (current perpendicular to plane) structure, comprising a magnetoresistive unit, and a first shield layer and a second shield layer which are located and formed such that the magnetoresistive unit is sandwiched between them from above and below, with a sense current... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090201613 - Magnetic head with interconnect element: A magnetic head in one embodiment comprises a plurality of components separated from each other by insulative portions; and at least one connective element coupling the components together. A magnetic tape head in another embodiment comprises a substrate; a closure separated from the substrate by an insulative portion; and at... Agent: Zilka-kotab, PC- Ibm

20090201614 - Spin-torque oscillator, magnetic head including the spin-torque oscillator, and magnetic recording and reproducing apparatus: It is made possible to to provide a spin-torque oscillator that has a high Q value and a high output. A spin-torque oscillator includes: an oscillating field generating unit configured to generate an oscillating field; and a magnetoresistive element including a magnetoresistive effect film including a first magnetization pinned layer... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

  
08/13/2009 > patent applications in patent subcategories. inventions list

20090201598 - Disc drive device: Embodiments of the present invention precisely measure clearance variation by temperature change using a value in a RW channel. In an embodiment of the present invention, an HDD measures resolution by signals in a RW channel. The measured resolution shows variations depending on temperature according to two factors. One factor... Agent: Townsend And Townsend And Crew LLP

20090201599 - Recorder and recording method: A recorder of the present invention includes an optical disk drive section recording data on an optical disk, and a host section transferring data recorded on an arbitrary recording medium to the optical disk drive section to record the data on the optical disk, wherein the optical disk drive section... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090201600 - Thermally assisted magnetic head, head gimbal assembly, and hard disk apparatus: A thermally assisted magnetic head includes a main magnetic pole for writing and a near-field light generator provided near the main magnetic pole, the near-field light generator having a non-magnetic base metal layer, a non-magnetic upper metal layer, an intermediate insulating layer interposed between the base metal layer and the... Agent: Oliff & Berridge, PLC

20090201601 - Magnetic data eraser: A magnetic data eraser includes a power supply circuit, a receptacle for accommodating a magnetic recording medium or a device incorporating a magnetic recording medium, primary and secondary coils wound around an outer periphery of the receptacle. The primary coil is connected to the power supply circuit. The secondary coil... Agent: Wood, Phillips, Katz, Clark & Mortimer

20090201602 - Long-term asymmetry tracking in magnetic recording devices: A technique tracks head asymmetry of a magnetic recording device over time. In particular, a reference pattern having a known fundamental/reference frequency may be read from a reserved track of a magnetic recording medium to produce a response signal, and signal power may then be determined at the reference frequency... Agent: Cesari And Mckenna, LLP

20090201604 - Balanced linkage actuation of tape head: In one embodiment, first and second levers of a tape head actuator are balanced using first and second masses carried on first and second sides, respectively, of the first and second levers. The first and second levers are linked with a link member of the first mass which further includes... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090201603 - Moving magnet actuation of tape head: In one embodiment, a tape read/write head supported by a lever is biased in a first position, using magnetic attraction between a magnet supported by the lever, and a return path structure of magnetically permeable material. In the illustrated embodiment, the magnet centers itself, in the absence of a coil... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090201606 - Internally replenished enclosure: Internally replenished gas-containing enclosures and methods of internally replenishing an enclosure are described.... Agent: 3m Innovative Properties Company

20090201605 - Vibration-isolating support device: A vibration-isolating support device is used for supporting at least one storage device. The vibration-isolating support device includes a frame to accommodating the storage device, a plurality of elastic washers, and at least two support elements. The frame has at least two side plates, and each side plate is opened... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090201607 - Patterned perpendicular magnetic recording medium and magnetic recording and reproducing apparatus: It is made possible to provide a patterned perpendicular magnetic recording medium that has smaller write magnetic field and the variation of magnetic characteristics in the bit regions, generates fewer reversed magnetic domains in the position control information regions of the head, and has excellent thermal stability. A patterned perpendicular... Agent: Nixon & Vanderhye, PC

20090201609 - Friction engaged tilting roller bearing tape guidance: In one embodiment, a tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090201608 - Magnetically biased tilting roller bearing tape guidance: In one embodiment, a tape movement constraint for a tape drive system, comprises a tiltable tape roller bearing having a grooved surface adapted to contact and engage a surface of the tape as the roller barrel rotates, and an actuator adapted to pivot the roller bearing surface when the actuator... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37

20090201610 - Tape guide rollers: A tape guide roller includes a first flange and a second flange separated by a barrel wherein at least one of the first flange and second flange comprise a soft material. The soft material can include acetal homopolymers, such as Delrin. It can also include soft metals, such as aluminum.... Agent: Hamilton & Terrile, LLP IBM Tucson

20090201611 - Perpendicular write head with tapered main pole: Prior art designs of single pole writers have been limited by premature saturation at the tip. This limits the head field that can be achieved without simultaneously widening the write profile. This problem has bee solved by means of a vertical main pole whose thickness has its conventional value a... Agent: Saile Ackerman LLC

20090201612 - Magnetoresistive device of the cpp type, and magnetic disk system: The invention provides a magnetoresistive device of the CPP (current perpendicular to plane) structure, comprising a magnetoresistive unit, and a first shield layer and a second shield layer which are located and formed such that the magnetoresistive unit is sandwiched between them from above and below, with a sense current... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090201613 - Magnetic head with interconnect element: A magnetic head in one embodiment comprises a plurality of components separated from each other by insulative portions; and at least one connective element coupling the components together. A magnetic tape head in another embodiment comprises a substrate; a closure separated from the substrate by an insulative portion; and at... Agent: Zilka-kotab, PC- Ibm

20090201614 - Spin-torque oscillator, magnetic head including the spin-torque oscillator, and magnetic recording and reproducing apparatus: It is made possible to to provide a spin-torque oscillator that has a high Q value and a high output. A spin-torque oscillator includes: an oscillating field generating unit configured to generate an oscillating field; and a magnetoresistive element including a magnetoresistive effect film including a first magnetization pinned layer... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

  
08/06/2009 > patent applications in patent subcategories. inventions list

20090195901 - Circuits for vcm back emf measurement with a bias voltage to control head flying location on disk: A hard disk drive with a voice coil motor coupled to a head. The head moves relative to a disk. The voice coil motor receives a biasing voltage and has a back emf voltage. A test circuit is coupled to the voice coil motor to determine the back emf voltage.... Agent: Irell & Manella LLP

20090195903 - Method of evaluating magnetoresistive head: The method is capable of perfectly detecting unstably magnetized magnetoresistive heads. The method of evaluating a magnetoresistive head comprises the steps of: applying a magnetic field to the magnetoresistive head, in the direction parallel to an air bearing surface of the magnetoresistive head, at a prescribed temperature; obtaining an image... Agent: Greer, Burns & Crain

20090195902 - Method, system, and computer program product for estimating adjacent track erasure risk by determining erase band width growth rates: A method according to one embodiment comprises determining a growth rate of an erase band width between an aggressor track and a substantially unerased portion of a data track on a magnetic medium during a first number of write cycles on the aggressor track; and estimating the erase band width,... Agent: Zilka-kotab, PC- Hit

20090195904 - Magnetic rom information carrier: The invention relates to a method of manufacturing a device (10) comprising a layer (12) having a pattern of disjunct portions (14) of magnetic material (18) generating a corresponding pattern of local magnetic fields (2). The magnetic material (18) is constituted of particles (22) dispersed in a solid substance (24).... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20090195905 - Method, system, and computer program product for thermally assisted recording systems: A method according to one embodiment comprises using a heating device, inducing localized heating on a magnetic medium during a recording operation; detecting a temperature in a vicinity of the heating device; detecting a current of the heating device; and performing an action if a function of at least one... Agent: Zilka-kotab, PC- Hit

20090195906 - Method and system for adaptive timing recovery: Timing recovery in partial-response-based magnetic recording systems customarily employs the “decision-directed” method wherein phase error is recovered from the differences between the noise-corrupted received signal samples and their estimated ideal (noise and phase error free) values. The filtered phase error drives a numerically-controlled oscillator which determines the instants at which... Agent: Sheppard, Mullin, Richter & Hampton LLP

20090195907 - Methods and apparatus for formatting memory media: At least one rotating memory medium such as a hard disk is installed in a hard disk drive or the like. The disk drive has a controller, controller memory and one or more heads for writing and reading to and from one or both sides of the disk. The disk... Agent: Greer, Burns & Crain

20090195912 - Disk drive that calibrates the power for setting the dynamic fly height of the head to a target value: According to one embodiment, a measuring module measures the dynamic flying height of a head. A change calculation module calculates a change ΔDFHPt in a reference power optimal for setting a first dynamic flying height, based on the difference between a second dynamic flying height, which has a value measured... Agent: Knobbe Martens Olson & Bear LLP

20090195909 - Gain control for data-dependent detection in magnetic storage read channels: Method, apparatus and computer program product adjust gain in a read channel of a magnetic media data storage device. A digital signal sample having a data-dependent noise component is received. A gain value, stored in a location in a gain table, is selected in a data-dependent manner. The gain of... Agent: Law Firm Of Dan Shifrin

20090195914 - Hard disk drive and method for designing additional controller included in hard disk drive: A hard disk drive is provided. The hard disk drive comprises a plant configured to drive the hard disk drive, a main controller configured to control the plant, and an additional controller connected in parallel with the main controller. A response function in consideration of the plant and the main... Agent: Volentine & Whitt PLLC

20090195913 - Magnetic disk apparatus and method for controlling magnetic head: A magnetic disk apparatus includes: a driving section for moving a magnetic head recoding and reproducing information in a magnetic disk; and a controller for controlling the driving section. The controller includes: a position-error feedback control system having an integrator and a phase lead compensator and obtaining a position command... Agent: Turocy & Watson, LLP

20090195911 - Magnetic recording device: A magnetic recording device includes a patterned media magnetic recording medium where multiple tracks are arranged for radial direction in a concentric manner, the tracks each being formed by arranging multiple recording dots. The recording dots are each made of an isolated magnetic material and arranged in a rotational direction.... Agent: Greer, Burns & Crain

20090195908 - Method and apparatus for vibration damping of a suspended media read/write head: A method of controlling a head for a recording medium includes determining that the head is in an inoperative state, and activating a damping arrangement in response to the determination that the head is inoperative. A movement of the head while the head is inoperative is sensed. The damping arrangement... Agent: Panasonic Automotive System Company Of America

20090195910 - Storage device and method of controlling spindle motor of storage device: In a storage device, before activating a spindle motor (SPM) or continuously from activation until the SPM is stabilized at a target number of rotations, a voltage and temperature monitoring unit monitors the temperature in a disk enclosure unit and the voltage to be applied to an SPM driver. A... Agent: Greer, Burns & Crain

20090195915 - Method of forming reference pattern: A method of forming a reference pattern. The method includes: determining whether a boundary point of an initial reference pattern is located at an inner diameter region of a disk, which is inside an outermost circumferential track; and if the boundary point of the initial reference pattern is located at... Agent: Stanzione & Kim, LLP

20090195916 - Extraction of transducer position information from bit patterned magnetic media: Extracting transducer position information from bit patterned magnetic media includes providing a magnetic storage medium having at least one data array with multiple discrete and separated recording bits and providing the transducer adjacent the data array. A readback signal dependent upon the multiple recording bits is generated with the transducer.... Agent: Myers Bigel Sibley & Sajovec, P.A.

20090195917 - Hard disc apparatus and head alignment method: According to one embodiment, a hard disc apparatus comprises a disc, wherein areas between neighboring servo areas are allocated to data areas including data sectors, a head module, and a storage module configured to store head alignment data, wherein the head alignment data are defined for the data areas, and... Agent: Knobbe Martens Olson & Bear LLP

20090195918 - Method and apparatus for reproducing information on bit-patterned recording medium: The information reproducing method manages an average magnetization state of each sector on a bit-patterned recording medium as sector management information and sets an information reproduction condition for the sector on the bit-patterned recording medium, based on the sector management information.... Agent: Staas & Halsey LLP

20090195919 - Method of fabricating a suspension: In a method of fabricating a suspension, a suspension has first and second opposing surfaces and includes a flexure, a load beam, a mounting arm, and traces. The flexure is coupled to a proximal end of the load beam, and the mounting arm is coupled to a distal end of... Agent: Kenyon & Kenyon LLP

20090195920 - Main pole bridge structure: A method of reducing flux leakage between a main pole and a wrap around shield (WAS) is provided. A gap underneath a main pole is etched. Magnetic material is deposited in the gap. A layer of nonmagnetic material is deposited on the magnetic material, wherein the layer of nonmagnetic material... Agent: Hitachi C/o Wagner Blecher LLP

20090195922 - Method and apparatus for actively canceling vibrations in a computer system: One embodiment of the present invention provides a system actively cancels vibrations in a computer system. During operation, the system monitors vibrations in the computer system. Next, the system analyzes the vibrations to identify one or more harmonics in the vibrations. The system then actively cancels one or more of... Agent: Pvf -- Sun Microsystems Inc. C/o Park, Vaughan & Fleming LLP

20090195921 - Method and apparatus for temperature control in a disk drive and/or an assembled circuit board: This application discloses and claims disk drives including a Phase Change Material (PCM) with a target temperature, where the PCM releases heat in response to an outside ambient temperature declining below the target, and the PCM absorbs heat in response to the ambient temperature rising above the target temperature. The... Agent: Gregory Smith & Associates

20090195923 - Heat assisted spindle motor of a hard disk drive: A hard disk drive with a spindle motor that rotates a disk. When the disk drive is exposed to low temperatures a current can be provided to the spindle motor to heat the motor. For example, a DC current can be provided to the spindle motor. The current flowing through... Agent: Irell & Manella LLP

20090195925 - Patterned magnetic recording media, stamper for manufacture of patterned magnetic recording media, method of manufacturing patterned magnetic recording media, and magnetic recording/reproduction apparatus: According to one embodiment, a patterned magnetic recording media has a magnetic recording layer and a protective layer formed on a substrate, in which the magnetic recording layer including a magnetic material patterned in tracks and a nonmagnetic material filled in between the tracks in a data area, and has... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20090195924 - Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the same: Embodiments of the present invention help allow accurate control of the magnetization reversal in a magnetic recording layer in small reversal units, whereby high-density recording can be achieved. According to one embodiment, by forming an intermediate layer having a granular structure similar to that of the magnetic recording layer below... Agent: Townsend And Townsend And Crew LLP

20090195927 - Digitally shredding on removable disk drives: Embodiments provide unique and novel systems and methods for deleting data on removable disk drives. In embodiments, the removable disk drives store data that may be erased such that the data is considered destroyed but that allows the removable disk drive to be reused. The archiving system can determine which... Agent: Townsend And Townsend And Crew, LLP

20090195926 - Removable hard-disk structure without screws: The present invention relates to a removable hard-disk structure without screws at least comprising a housing, a first elastic arm, a second elastic arm and a removable component. The housing having a placing space is connected to an opening end to enable the hard disk be placed into the placing... Agent: Bacon & Thomas, PLLC

20090195928 - Magnetic disk apparatus: A magnetic disk apparatus includes a non-volatile memory for saving read data and write data transmitted from a host. The magnetic disk apparatus includes a non-volatile memory that saves read data and write data transmitted from a host. The non-volatile memory has a host designated data area that saves host... Agent: Greer, Burns & Crain

20090195929 - Method of manufacturing discrete track recording medium and discrete track recording medium: According to one embodiment, a method of manufacturing a discrete track recording medium includes forming protruded magnetic patterns on a substrate, and repeating processes of depositing a nonmagnetic material so as to be filled in recesses between the magnetic patterns and etching back the nonmagnetic material two or more times... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20090195930 - Magnetic recording slider with flex side pads: A system according to one embodiment comprises a slider having an air bearing surface side and a flex side, the flex side being positioned on an opposite side of the slider as the air bearing surface side; electrical pads on the flex side of the slider; and a heating device... Agent: Zilka-kotab, PC- Hit

20090195931 - Head slider and method of manufacturing head suspension assembly: A method of manufacturing a head suspension assembly for mounting a head slider on a suspension includes an irradiating light step, acquiring position information step and head slider mounting step. The irradiating light step is the step of irradiating light on a protective film and a marker at an incidence... Agent: Greer, Burns & Crain

20090195932 - Method and apparatus for an air bearing surface in a hard disk drive using at least one patterned disk surface: Estimating methods and apparatus are disclosed for the patterned flying height of an air bearing surface over a patterned surface from the flying height over a smooth surface minus a flying height delta based upon the patterned surface. A hard disk drive is disclosed including the air bearing surface over... Agent: Gregory Smith & Associates

20090195933 - Head assembly: A head assembly for writing or reading information to or from a recording medium. The head assembly includes a suspension having an electrode pad; a mounting member placed on the suspension; a head mounted on the mounting member and having an electrode, for writing or reading information; and a first... Agent: Greer, Burns & Crain

20090195934 - Device and method for manufacturing spring member: A spring member manufacturing device that manufactures the spring member by laser irradiation includes a laser irradiation unit including a plurality of laser irradiation devices that perform predetermined laser irradiation with respect to the spring member. In the spring member manufacturing device, the laser irradiation devices are configured so that... Agent: Staas & Halsey LLP

20090195935 - Suspension interconnect and head gimbal assembly including the same: A suspension interconnect of a head gimbal assembly (HGA) includes a ground layer; a base layer formed of a dielectric material and disposed on the ground layer; a pair of read traces and a pair of write traces which are formed of a conductive material, disposed on the base layer... Agent: Stanzione & Kim, LLP

20090195936 - Disk drive servoing off of first head while determining fly height for second head: A method is disclosed for selecting a dynamic fly height (DFH) control setting for a head in a disk drive, the disk drive comprising a plurality of disk surfaces and plurality of respective heads. The method comprises servoing a first head over a first disk surface in response to servo... Agent: Western Digital Technologies, Inc. Attn: Lesley Ning

20090195937 - Actuator latch apparatus for disk drive: An actuator latch apparatus for a disk drive, having a notch positioned at a first end portion of the swing arm, a latch lever rotatably installed in a base member, a first core provided on a second end portion of the swing arm, and a second core provided at a... Agent: Staas & Halsey LLP

20090195938 - Piezoelectric micro-actuator, head gimbal assembly and its assembling method, and disk drive device with the same: A PZT micro-actuator for a head gimbal assembly includes a pair of separate PZT elements and each PZT element has a body and a plurality of electrical pads. The body has at least two electrode-piezoelectric combination layers laminated together. The at least two electrode-piezoelectric combination layers are physically connected with... Agent: Nixon & Vanderhye, PC

20090195939 - Optimization of two dimensional electron gas structures for magnetic recording sensors: A Lorentz Magnetoresistive sensor having an ultrathin trapping layer disposed between a quantum well structure and a surface of the sensor. The trapping layer prevents charge carriers from the surface of the sensor from affecting the quantum well structure. This allows the quantum well structure to be formed much closer... Agent: Zilka-kotab, PC- Hit

20090195940 - Magnetic head and multilayered circuit: In the magnetic head, terminal sections for mutually electrically connecting layers in the multilayer structure can be formed without forming raising layers. The magnetic head having a multilayer structure comprises: an upper shielding layer; a lower shielding layer; a magnetoresistance effect element section provided between the shielding layers; a magnetic... Agent: Greer, Burns & Crain

20090195941 - Patterned mr device with controlled shape anisotropy: A magnetic sensor with increased sensitivity, lower noise, and improved frequency response is described. The sensor's free layer is ribbon shaped and is closely flanked at each long edge by a ribbon of magnetically soft, high permeability material. This side pattern absorbs external field flux, concentrating it to flow into... Agent: Saile Ackerman LLC

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