|Dynamic magnetic information storage or retrieval patents - Monitor Patents|
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Dynamic magnetic information storage or retrieval September class, title,number 09/11Below 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. 09/29/2011 > 14 patent applications in 13 patent subcategories.
20110235204 - Detection of hard-disc defect regions using soft decisions: In a hard-disc drive, a defect region on the hard disc is detected by generating two statistical measures (e.g., β1(k) and β2(k)) based on signal values (e.g., x[n] or y[n]) and soft-decision values (e.g., L[n]) corresponding to the signal values. The measures are compared to detect the location of the... Agent: Lsi Corporation
20110235205 - Laminated exchange coupling adhesion (leca) media for heat assisted magnetic recording: An apparatus includes a plurality of bilayer structures positioned adjacent to each other, each of the bilayer structures including a first layer of magnetic material having a first Curie temperature and a second layer of magnetic material positioned adjacent to the first layer, wherein the second layer has a second... Agent: Seagate Technology LLC
20110235206 - Method and apparatus for controlling a motor in a disk drive: A method and apparatus for adaptively controlling a motor considering a state of disturbance applied to a system. The method includes changing a frequency bandwidth of a frequency response characteristic in a motor control system according to a state of disturbance applied to the motor control system, and controlling a... Agent: Samsung Electronics Co., Ltd.
20110235207 - Method and apparatus for detecting touch-down and contact between a head and a storage medium using a sensor, and a drive disk and storage medium using the method: A method and apparatus for detecting a touch-down and contact between a head and a storage medium by using a signal generated by a data storage device, specifically by a sensor installed in a slider. The method includes: separating a signal detected by a sensor into a direct current (DC)... Agent: Samsung Electronics Co., Ltd.
20110235208 - Method of detecting the touch-down of a head, method of adjusting a head flying height using the method of detecting the touch-down of the head, and disk drive using the method of detecting the touch-down of the head: A method of detecting a touch-down of a head in a disk drive, a method of adjusting a head flying height by using the method of detecting a touch-down of a head, and a disk drive using the method of detecting a touch-down of a head detect a change of... Agent: Samsung Electronics Co., Ltd.
20110235209 - Tape library apparatus: A tape library apparatus includes a recording/reproducing unit for accessing data in the tape cartridges, a first driver for producing a driving force, a conveyer for carrying the recording/reproducing unit in the direction of the alignment of the plurality of the tape cartridges, by the driving force produced by the... Agent: Fujitsu Limited
20110235210 - Spindle motor including communicating channel, and disk drive apparatus: A spindle motor for use in a disk drive apparatus includes stationary and rotating portions. The stationary portion includes a shaft including a thrust plate. A sleeve portion includes an axial end surface arranged opposite the thrust plate. A first seal member is arranged opposite the thrust plate on an... Agent: Nidec Corporation
20110235211 - Magnetic recording medium, manufacturing method thereof, and magnetic recording/reproducing device: A magnetic recording medium that is capable of realizing both high magnetic permeability and antiferromagnetic coupling for a soft magnetic underlayer. Namely, a magnetic recording medium including at least a non-magnetic substrate on which is laminated a soft magnetic underlayer formed by antiferromagnetic coupling of a plurality of soft magnetic... Agent: Showa Denko Hd Singapore Pte Ltd.
20110235212 - Method of manufacturing magnetic recording medium: According to one embodiment, a method of manufacturing a magnetic recording medium includes forming on a magnetic recording layer a first hard mask, a second hard mask, a third hard mask and a resist, imprinting the resist with a stamper, removing a residue left in the recesses of the patterned... Agent: Kabushiki Kaisha Toshiba
20110235213 - Suspension substrate, manufacturing method of suspension substrate, suspension, device-mounted suspension, and hard disk drive: The object of the present invention is to provide a suspension substrate such that the thickness of an insulating layer for supporting a connecting terminal having a flying structure is uniform. The present invention attains the object by providing a suspension substrate, comprising a metal supporting substrate, an insulating layer... Agent: Dai Nippon Printing Co., Ltd.
20110235214 - Magnetoresistive sensor, magnetic head, head gimbal assembly, and disk drive unit with the same: A MR sensor includes a first shielding layer, a second shielding layer, a MR element formed therebetween, and a pair of hard magnet layers respectively placed on two sides of the MR element. The MR element comprises an AFM layer formed on the first shielding layer, a pinned layer formed... Agent: Tdk Corporation
20110235215 - Patterned magnetic recording disk with high bit-aspect-ratio and master mold for nanoimprinting the disk: A method for making a master mold that is used in the nanoimprinting process to make patterned-media disks with patterned data islands uses guided self-assembly of a block copolymer into its components. Conventional or e-beam lithography is used to first form a pattern of generally radial stripes on a substrate,... Agent:
20110235216 - Longitudinal bias stack for a current-perpendicular-to-plane (cpp) read sensor: A read head having an improved longitudinal bias stack for stabilizing the sense layer structure of a CPP read sensor is proposed. The longitudinal bias stack is separated by an insulation layer from the CPP read sensor in each of two side regions, and is sandwiched together with the insulation... Agent:
20110235217 - Fabricating a magnetic tunnel junction storage element: Methods for forming a magnetic tunnel junction (MTJ) storage element and MTJ storage elements formed are disclosed. The MTJ storage element includes a MTJ stack having a pinned layer stack, a barrier layer and a free layer. An adjusting layer is formed on the free layer, such that the free... Agent: Qualcomm Incorporated09/22/2011 > 13 patent applications in 8 patent subcategories.
20110228416 - A method of manufacturing a thermally assisted magnetic head: A thermally assisted magnetic head is formed by performing a head forming process, a mounting part forming process and a light source mounting process in that order. In the head forming process, a planned area is secured on a light source placing surface of a slider substrate, then a magnetic... Agent: Sae Magnetics (h.k.)ltd.
20110228419 - Heat-assisted magnetic recording head including plasmon generator: A plasmon generator has an outer surface including a propagation edge, and has a near-field light generating part lying at an end of the propagation edge and located in a medium facing surface. The propagation edge faces an evanescent light generating surface of a waveguide's core with a predetermined distance... Agent: Tdk Corporation
20110228420 - Heat-assisted magnetic recording head including plasmon generator: A plasmon generator has an outer surface including a plasmon exciting part, and has a near-field light generating part located in a medium facing surface. The plasmon exciting part faces an evanescent light generating surface of a waveguide's core with a predetermined distance therebetween. The outer surface of the plasmon... Agent: Tdk Corporation
20110228417 - Heat-assisted magnetic recording head with near-field light generating element: A near-field light generating element has an outer surface. The outer surface includes a bottom surface, first and second inclined surfaces, an edge part that connects the first and second inclined surfaces to each other, and a front end face located in a medium facing surface. The front end face... Agent: Tdk Corporation
20110228418 - Heat-assisted magnetic recording head with near-field light generating element: A near-field light generating element has an outer surface including a bottom surface that lies at an end closer to a top surface of a substrate, a waveguide facing surface that lies at an end farther from the top surface of the substrate and faces a waveguide, a front end... Agent: Tdk Corporation
20110228421 - Detecting lto servo patterns on perpendicular recorded media: In one embodiment, a servo processing circuit comprises a correlation filter and a Lagrange interpolator peak detector coupled to the correlation filter. The correlation filter is operable to receive a first signal as input; correlate the first signal with a reference signal; and produce a second signal as output, wherein... Agent: Quantum Corporation
20110228423 - Magnetic recording head, magnetic head assembly, and magnetic recording/reproducing apparatus: A magnetic recording head includes a first ferromagnetic layer, an intermediate layer, a third ferromagnetic layer, a first magnetic pole and a second magnetic pole. The intermediate layer is provided between the first ferromagnetic layer and the second ferromagnetic layer. The third ferromagnetic layer includes a CoIr alloy and is... Agent: Kabushiki Kaisha Toshiba
20110228422 - Ultra fast disk access using arrays of fixed read/write transducers: An apparatus comprising a magnetic media and a read/write unit. The magnetic media may be configured to store data. The magnetic media may also be rotated during access of the magnetic media. The read/write unit may comprise a plurality of transducers arranged in a linear array. Each of the transducers... Agent:
20110228424 - Dual gain control for magnetic data storage system: A system according to one embodiment includes an analog input for receiving an analog signal; a variable gain amplifier coupled to the analog input; a first gain control circuit coupled to the variable gain amplifier for controlling the gain of the analog signal; an analog to digital converter for converting... Agent: International Business Machines Corporation
20110228425 - Suspension assembly having a microactuator electrically connected to a gold coating on a stainless steel surface: A novel suspension assembly includes a suspension assembly mounting plate, a microactuator mounting structure extending from the suspension assembly mounting plate, a load beam extending from the microactuator mounting structure, and a laminated flexure attached to the load beam. The laminated flexure includes a tongue that has a read head... Agent: Western Digital Technologies, Inc.
20110228426 - Suspension, head gimbal assembly and disk drive unit with the same: A suspension comprises a flexure and a plurality of electrical traces. The flexure has a leading portion and a tailing portion, and has a laminated structure comprising a substrate layer, a dielectric layer, and a grounding layer sandwiched therebetween. The electrical traces comprise at least one pair of write traces,... Agent: Sae Magnetics (h.k.) Ltd.
20110228427 - Magnetoresistive element, magnetic head assembly, and magnetic recording/reproducing apparatus: A magnetoresistive element includes a first ferromagnetic layer, a second ferromagnetic layer, a nonmagnetic layer, a first metal layer, a second metal layer, a first electrode, and a second electrode. The nonmagnetic layer is provided between the first ferromagnetic layer and the second ferromagnetic layer. The first metal layer includes... Agent: Kabushiki Kaisha Toshiba
20110228428 - Trilayer reader with current constraint at the abs: A magnetoresistive read sensor with improved sensitivity and stability is described. The sensor is a trilayer stack positioned between two electrodes. The trilayer stack has two free layers separated by a nonmagnetic layer and a biasing magnet positioned at the rear of the stack and separated from the air bearing... Agent: Seagate Technology LLC09/15/2011 > 11 patent applications in 8 patent subcategories.
20110222181 - Communication apparatus: A communication apparatus is configured to execute testing of whether or not the responding module is correctly responding to the plurality of commands transmitted and received between a transmission module and a reception module, the testing being performed via a loop-back mode transmission and reception path configured such that the... Agent: Kabushiki Kaisha Toshiba
20110222182 - Disk device and write method: A disk device and a write method that includes performing a write operation on a first data sector using first servo information, performing the write operation on a second data sector, and determining whether the write operation has been normally performed on the second data sector using a second servo... Agent: Samsung Electronics Co., Ltd.
20110222180 - Method and system for interrogating the thickness of a carbon layer: A method and system for interrogating a thickness of a carbon layer are described. The carbon layer resides on at least one of a magnetic recording head and a magnetic recording disk. The method and system include providing an enhancement film on the carbon layer. The enhancement film is continuous... Agent: Western Digital (fremont), LLC
20110222183 - Cartridge refresh and verify: A method according to one embodiment includes: deciding to perform a refresh operation on a media cartridge having a tape wrapped around a spool; determining which drive of a plurality of drives is available to perform the refresh operation; causing the media cartridge to be mounted to the available drive;... Agent: International Business Machines Corporation
20110222185 - Magnetic recording apparatus provided with microwave-assisted head: A magnetic recording apparatus includes a magnetic recording medium having a magnetic recording layer, a thin-film magnetic head with a microwave-band magnetic drive function, the head having a write field generation means that generates a write field to the magnetic recording medium in response to a write signal, and a... Agent: Tdk Corporation
20110222184 - Optical waveguide and thermal assist magnetic recording head therewith: An optical waveguide, on account of its ability to apply phase resonance of a wavelength and of a first and second triangular plate-like spot size converter members formed of the same material as a core material and being arranged and formed in a substantially symmetrical structure, can promote shortening of... Agent: Tdk Corporation
20110222186 - Magnetic recording device, magnetic recording method, and magnetic storage medium: According to one embodiment, a magnetic recording device based on shingled-write recording method comprises a magnetic storage medium, a recording head, and an actuator. The magnetic storage medium comprises dot rows wherein a phase shift is between adjacent rows. The recording head covers a predetermined number of dot rows of... Agent: Kabushiki Kaisha Toshiba
20110222187 - Low track pitch write module and bidirectional tape head: A low track pitch write module and bidirectional tape head for writing and/or reading data on a magnetic recording tape. The write module and tape head have a tape bearing surface for engaging the magnetic recording tape and plural write elements. The write elements are arranged so that the write... Agent: International Business Machines Corporation
20110222188 - Perpendicular recording magnetic head, manufacturing method thereof and magnetic disk drive: The reduction in a recording magnetic field due to the narrowing of recording track width along with the improved surface recording density is prevented and the increasing of accuracy in the track width is achieved, enabling an improvement in recording performance. In a perpendicular magnetic recording head, a main pole... Agent: Hitachi, Ltd.
20110222189 - Magnetic recording medium and method for producing the same: A patterned magnetic recording medium, accessible by a magnetic recording head, including a plurality of tracks, a width direction of each track and that of the magnetic recording head being of a skew angle. The patterned magnetic recording medium includes a plurality of magnetic dots, each corresponding to a recording... Agent: Fuji Electric Device Technology Co., Ltd.
20110222190 - Temperature assisted magnetic recording element having grounded near field light generator: A magnetic recording element has a substrate, a main pole for recording that includes an edge part positioned on an air bearing surface (ABS), a waveguide through which a laser light propagates, and a plasmon generator. The plasmon generator is positioned away from the substrate and extends to the ABS... Agent: Tdk Corporation09/08/2011 > 18 patent applications in 15 patent subcategories.
20110216430 - Magnetic head including sensor: A magnetic head disposed in a slider arranged with an interval with respect to a magnetic disk includes a sensor that is positioned in a stepped-back position from an air bearing surface facing the magnetic disk, an insulating film that is positioned on the air bearing surface and that covers... Agent: Tdk Corporation
20110216431 - Processing disks on a spin stand: A method of processing disks on spin stand is disclosed, the spin stand comprising a spindle motor having a rotor. A first disk is clamped to the rotor, wherein the first disk comprises a reference servo pattern. A second disk is clamped to the rotor, and a first head is... Agent: Wd Media, Inc.
20110216432 - Magnetic head comprising two magnetic field sensing part: A reading element of a magnetic head has a first magnetoresistive effect part (first MR part) and a second magnetoresistive effect part (second MR part), an electrical resistance of the first MR part changing according to an external magnetic field applied to a first magnetic field sense area, an electrical... Agent: Tdk Corporation
20110216433 - Writing repeating patterns of features to a substrate: Method and apparatus for writing repeating patterns of features to a substrate, such as a data storage medium. In accordance with some embodiments, a multi-dimensional pattern of discrete features of different sizes to be written to a substrate is divided into a plurality of contiguous regions. A unique set of... Agent: Doug Carson & Associates, Inc.
20110216434 - Timing alternative intervals within a timing based servo band: An alternative time interval is taken of a timing based servo band to determine lateral position of a servo read head. The servo band is arranged in a sequence bursts with non-parallel servo stripes in sequentially adjacent sub-frames of a linear tape. The timing intervals comprise at least a first... Agent: International Business Machines Corporation
20110216435 - Microwave-assisted magnetic recording head and magnetic read/write apparatus using the same: A microwave-assisted magnetic recording head includes: a main magnetic pole that generates a recording magnetic field to be recorded on a magnetic recording medium; a shield; and an oscillator that is provided between the main magnetic pole and the shield and generates a microwave magnetic field. The microwave-assisted magnetic recording... Agent: Hitachi, Ltd.
20110216436 - Information recording device: Excellent magnetization switching of a magnetic recording medium is promoted in microwave assisted magnetic recording to provide a highly-reliable high-density information recording device. A receded section from an air bearing surface is arranged at an end section in a write track width direction on an FGL laminate film for generating... Agent:
20110216437 - Real-time gain identification: A real-time gain identification system for a mechatronic system, such as a servo system, including at least two actuators is provided. In an example implementation, a servo system comprises a primary actuator and a piezoelectric secondary actuator. A controller generates a disturbance for one of the actuators that is compensated... Agent: Seagate Technology LLC
20110216439 - Head parking ramp and hard disk drive having the same: A hard disk drive includes a head stack assembly having a read/write head to read data stored on a disk and/or to write data to the disk while flying over the disk. The read/write head includes an end tap that is disposed at a peripheral portion of the read/write head.... Agent: Samsung Electronics Co., Ltd
20110216438 - Reader-writer offset correction for a disk drive: A servo wedge on a recording medium for a disk drive includes a gray-code field that stores a micro-jog correction factor for a data track. The micro-jog correction factor compensates for the effect of accumulated track pitch variations. In one embodiment, the radial wedge formed by gray-code fields for adjacent... Agent:
20110216441 - Application of continuous position error offset signal to acquire servo track: The method employs a servo system for positioning a head laterally to follow lateral motion of a longitudinal tape having longitudinal defined servo track(s), the servo system comprising a servo element configured to sense lateral position of the head with respect to an acquired servo track, a fine actuator configured... Agent: International Business Machines Corporation
20110216440 - Positioning a coarse actuator of compound actuator tape servo system at midpoint of maximum peaks of lateral tape movement: Where a tape is subject to lateral shift excursions from one side of a head to another, a coarse actuator is positioned laterally to enable a fine actuator to follow lateral motion of a longitudinal tape having at least one longitudinal defined servo track. A position error signal loop is... Agent: International Business Machines Corporation
20110216442 - Spindle motor and disk drive apparatus provided with the spindle motor: A spindle motor includes a rotary unit, a bearing mechanism, a stator, a base member, and a connector connected to a leader line extending from the stator through a communication hole of the base member. The connector includes a pedestal and a metal pin. The leader line is connected to... Agent: Nidec Corporation
20110216443 - Perpendicular magnetic write head and magnetic recording device: A perpendicular magnetic write head is provided with a magnetic pole and a pair of side shields disposed on both sides of the magnetic pole in a cross track direction with side gaps in between. Each of the pair of side shields is configured in such a manner that a... Agent: Tdk Corporation
20110216444 - Recovery operation status indicator for a tape drive system: A method, apparatus and computer-program product for indicating progress status of a mid-tape or data recovery operation in a tape drive. The method includes visually indicating that a recovery operation has started, periodically determining the remaining recovery time based on the remaining tape spool, and displaying the determined remaining recovery... Agent: International Business Machines Corporation
20110216445 - Electronic substrate and magnetic disk apparatus: An electronic substrate includes: a flexible printed circuit comprising a head connecting portion being provided with a first terminal to be electrically connected to a magnetic head, and a board connecting portion being provided with a second terminal to be electrically connected to a main printed board; a first reinforcing... Agent: Kabushiki Kaisha Toshiba
20110216446 - Head suspension and method of manufacturing head suspension: A head suspension has a conductive base plate, a piezoelectric element, and a load beam. The piezoelectric element deforms in response to a voltage applied thereto, thereby moving the load beam relative to the base plate in a sway direction. The head suspension includes an actuator base integral with the... Agent: Nhk Spring Co., Ltd.
20110216447 - Process of octagonal pole for microwave assisted magnetic recording (mamr) writer: A microwave assisted magnetic recording writer is disclosed with an octagonal write pole having a top portion including a trailing edge that is self aligned to a spin transfer oscillator (STO). Leading and trailing edges are connected by two sidewalls each having three sections. A first section on each side... Agent: Headway Technologies, Inc09/01/2011 > 10 patent applications in 7 patent subcategories.
20110211271 - Trapping electron assisted magnetic recording system and method: A system and method for trapping electron assisted magnetic recording is disclosed. A magnetic recording system comprises a magnetic storage media, a read/write head, and a power supply for applying a negative DC electrical bias to the magnetic storage media in order to reduce the media switching field during the... Agent:
20110211272 - Magnetic field detecting device and methods of using the same: A disclosed device having a principle axis and including a magnetoresistive stack, the magnetoresistive stack having first and second opposing surfaces, the magnetoresistive stack including a free layer, a spacer layer, and a reference layer, wherein the spacer layer is positioned between the first and reference layer, the free layer... Agent: Seagate Technology LLC
20110211273 - Tape data assessment through medium axuiliary memory data comparison: Methods for certifying data retained by a tape cartridge in a tape library are shown. Error rates that are encountered when the tape cartridge is being read by a tape drive can be accounted for without actually reading data for data content retrieval. A record of the error rate can... Agent: Spectra Logic Corporation
20110211274 - Head assembly, magnetic disk drive apparatus and rotation mechanism: A head assembly includes a slider having a head element, a load beam, a fulcrum formed at a top end section of the load beam, a slider support plate for supporting the slider to freely turn around the fulcrum, at least one drive element for applying a turning force to... Agent: Sae Magnetics (h.k.) Ltd.
20110211277 - Detecting circuit and inspecting apparatus: A detecting circuit, which can detect plural types of servo signals, including a cosine/sine value detector for sampling a servo signal supplied from an inspected object and thereby obtaining a cosine value and a sine value, an amplitude/phase detector for obtaining at least amplitude information and phase information on the... Agent:
20110211276 - Method and apparatus for controlling head flying height in a disk drive: According to one embodiment, a disk drive includes a measuring module, a flying height controller, a detection module, and a controller. The measuring module is configured to measure the flying height that the head has with respect to the disk. The flying height controller is configured to control the head... Agent: Kabushiki Kaisha Toshiba
20110211275 - Method of determining flying height of magnetic head: For obtaining a flying height of a magnetic head from a magnetic disk, the magnetic head being placed in a slider arranged at an interval with the magnetic disk, an initial setting process and a flying height detecting process are performed. In the initial setting process, driving power to a... Agent: Sae Magnetics (h.k.) Ltd.
20110211278 - Method of retaining a transducer on a base: A method of retaining a transducer for a digital storage apparatus that reads and writes data to a tape as the tape is moved in a tape drive path across the transducer. According to the method a head assembly is attached to the base to be movable relative to the... Agent: Oracle America, Inc. , Formerly Known As Sun Microsystems, Inc.
20110211279 - Sealed laminated electrical connector for helium filled disk drive: A novel disk drive includes a hermetically sealed helium-filled enclosure that has an opening extending through the disk drive base. A laminated electrical connector is disposed inside the enclosure, spans the opening, and is accessible from outside the disk drive base via the opening. The laminated electrical connector has an... Agent: Western Digital Technologies, Inc.
20110211280 - Method and apparatus for at least one actuator arm damper covering at least one lightening hole in a hard disk drive to reduce track mis-registration (tmr): This application discloses a hard disk drive, a head stack assembly, an actuator arm, and an arm damper configured for coupling to an actuator arm to create the head stack assembly used in the hard disk drive. The actuator arm has two arm dampers covering a lightening hole on either... Agent:Previous industry: Optical: systems and elements
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