|Dynamic magnetic information storage or retrieval patents - Monitor Patents|
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Dynamic magnetic information storage or retrieval September class, title,number 09/09Below 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. 09/24/2009 > patent applications in patent subcategories. class, title,number
20090237823 - Magnetic transfer method for magnetic recording medium, and magnetic recording medium: A magnetic transfer method including initially magnetizing a perpendicular magnetic recording medium by applying a DC magnetic field thereto in a perpendicular direction, and applying, to the perpendicular magnetic recording medium, a DC magnetic field for 100 nsec to 1 sec in an opposite direction to the magnetic field applied... Agent: Young & Thompson
20090237824 - Pattern writing system and parameters monitoring method for pattern writing apparatus: A pattern writing system includes a plurality of control units configured to use different communication standards; a pattern writing unit configured to be controlled by the plurality of control units and write a pattern on a target object by using a charged particle beam; a storage unit configured to receive... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.
20090237825 - Storage device and control method thereof: a count judgment unit that judges whether the count counted by the access counter has reached a predefined number of times when the access judgment unit judges that the recording medium is accessed successively, and an access delay unit. The access delay unit delays the access to the recording medium... Agent: Greer, Burns & Crain
20090237826 - Data storage apparatus: A data storage apparatus includes: a medium for storing data including sectors, each of the sectors including a synchronization mark indicating the data start position in each of the sectors; a memory for storing types of synchronization marks stored in the sectors; and a processor for executing a process including... Agent: Greer, Burns & Crain
20090237827 - Signal processing circuit and magnetic storage apparatus: A signal processing circuit performs processing for an analog signal output from a head. The signal processing circuit includes: a conversion section that generates a digital signal based on the analog signal; a first filter that equalizes the output of the conversion section; a demodulation section that demodulates data from... Agent: Greer, Burns & Crain
20090237828 - Tape device data transferring method and tape management system: A data transferring method is provided which can perform a data transfer without stopping transactions, without introducing a new device or without halting an access to a tape device by a higher-level device as would otherwise be required by a data transfer procedure. A technology is provided whereby a host... Agent: Sughrue Mion, PLLC
20090237829 - Information recording medium: An information recording medium has a substrate, first recording dots, and second recording dots. The first recording dots are arranged in an array circumferentially in accordance with a predetermined regulation at mutual intervals in accordance with the regulation at a position in accordance with the regulation, and are used to... Agent: Greer, Burns & Crain
20090237830 - Method of controlling flying height of head slider and information storage apparatus: One aspect of the embodiments is related to a method of controlling a flying height of a head slider. The method includes the steps of measuring a first correlation value between an air pressure and a heating element sensitivity of the head slider, measuring a second correlation value between the... Agent: Greer, Burns & Crain
20090237831 - Storage device, magnetic circuit, and actuator: When impact occurs, a magnetic disk device detects the impact, being transmitted to a head, on an actuator located in a route from an impact source to the head. Upon detection of the impact, the magnetic disk device stops data write operation. Specifically, before the impact is transmitted to the... Agent: Greer, Burns & Crain
20090237832 - Error correction coding of longitudinal position information: A sequential data storage medium, comprising a sequence of plurality of servo patterns that provide lateral position information and longitudinal position information, wherein each of the plurality of servo patterns comprises a first burst comprising a first plurality of pulses, a second burst comprising a second plurality of pulses, a... Agent: Dale F. Regelman Quarles & Brady, LLP
20090237833 - Magnetic tape apparatus using perpendicular magnetic recording: Provided is a magnetic tape apparatus using perpendicular magnetic recording, which has the function corresponding to an soft-magnetic under layer with sufficiently large thickness and enables the magnetic tape to maintain life sufficiently. This magnetic tape apparatus comprises: a tape head comprising at least one write head element for perpendicular... Agent: Oliff & Berridge, PLC
20090237834 - Determining cartridge conflicts with deep slot technology: A library includes a frame, a plurality of cartridge slots disposed within the frame and at least one counter configured to determine the presence of cartridges stored within the plurality of cartridge slots without removing the cartridges. The library also includes at least one controller in communication with the counter... Agent: Hamilton & Terrile, LLP IBM Tucson
20090237835 - Switching field controlled (sfc) media using anti-ferromagnetic thin layer in magnetic recording: A patterned disk for a hard disk drive. The patterned disk includes an anti-ferromagnetic layer of FexNi1-xO over a substrate. The disk also includes a magnetic layer that is adjacent to the anti-ferromagnetic layer of FexNi1-xO, and is formed into a plurality of dots separated by a non-magnetic material. The... Agent: Irell & Manella LLP
20090237836 - Method and system for providing hard disk shrouds with aerodynamic fences for suppressing flow induced disk excitation: A system and method for stabilizing air flow in a shroud to disk region in a hard disk drive are disclosed. One embodiment provides a hard disk drive having a shroud with machined aerodynamic annulus insertions thereon for stabilizing the Ekman layer of air flow at the peripheral ends of... Agent: Hitachi C/o Wagner Blecher LLP
20090237837 - Magnetic recording head: A method of fabricating a recording head includes depositing an insulator material onto at least a portion of a first member, wherein the insulator material forms an insulator film having a film thickness. The method further includes depositing a writer pole material onto the insulator film, wherein the writer pole... Agent: Shumaker & Sieffert, P.A.
20090237838 - Magnetic recording media and method of manufacturing the same, and magnetic recording/reproduction device: A method of manufacturing magnetic recording media with a high areal recording density, in which there write bleeding during magnetic recording is eliminated by reducing insofar as possible the coercive force and remanent magnetization in areas between magnetic tracks, is provided. The method of manufacture can produce magnetic recording media... Agent: Sughrue Mion, PLLC
20090237839 - Cpp-type magnetoresistance effect element having three magnetic layers: A magnetoresistance effect element comprises: a magnetoresistive stack including: first, second and third magnetic layers whose magnetization directions change in accordance with an external magnetic field, said second magnetic layer being located between said first magnetic layer and the third magnetic layer; a first non-magnetic intermediate layer sandwiched between said... Agent: Knobbe Martens Olson & Bear LLP
20090237840 - Storage medium driving apparatus and control method thereof: A storage medium driving apparatus includes a head slider opposed to a storage medium, an acceleration detector detecting an acceleration of the apparatus. A control circuit retracts the head slider from above the storage medium according to a result detected by the acceleration detector and selectively executes one or more... Agent: Greer, Burns & Crain
20090237841 - Magnetic head and magnetic recording device: A magnetic head includes a head element recording and reading data on and from a recording medium, a slider having an air bearing surface facing the recording medium, and having the head element forming surface which the head element being present on, and a piezoelectric device attached above the head... Agent: Westerman, Hattori, Daniels & Adrian, LLP
20090237842 - Low track-per-inch (tpi) zone with reduced need for adjacent-track-erasure (ate) refresh: Methods and systems are shown that specify at least one low track-per-inch (TPI) region and at least one normal TPI region on a disk. The low TPI region may be used to store information that may be rewritten frequently. The normal TPI region may be used to store information that... Agent: Schwegman, Lundberg & Woessner/toshiba
20090237843 - Magnetic head assembly and storage apparatus: An aspect of the embodiments relates to a magnetic head assembly. The magnetic head assembly includes a suspension comprising an attachment surface, a bent section that extends generally vertically from the attachment surface, and a suspension comprising a first plurality of terminals attached on the bent section; and a head... Agent: Greer, Burns & Crain
20090237844 - Magnetic sensor device for and a method of sensing magnetic particles: A magnetic sensor device (300) for sensing magnetic particles (15), the magnetic sensor device (300) comprising a magnetic field generator unit (12) adapted for generating a magnetic field, an excitation signal source (302) adapted for supplying the magnetic field generator unit (12) with a static electric excitation signal, an excitation... Agent: Philips Intellectual Property & Standards09/17/2009 > patent applications in patent subcategories. class, title,number
20090231744 - Magnetic disk device testing method and testing device: A magnetic disk device testing method includes obtaining index values indicating the signal quality of an adjacent track at different positions scattered in the width direction in the adjacent track located in the vicinity of a target track on a magnetic disk after repeatedly writing data onto the target track,... Agent: Greer, Burns & Crain
20090231743 - Testing method for thin-film magnetic head and jig used therefor: In testing thin-film magnetic heads, first, a back surface opposite to a medium facing surface of each of a plurality of thin-film magnetic heads is attached to a first surface of a first plate of a jig, the jig including the first plate of rubber having the first and second... Agent: Oliff & Berridge, PLC
20090231745 - Programmable soft-output viterbi algorithm system and method: In a particular embodiment, a channel detector is disclosed that includes a programmable look-up table (LUT) to relate user bits to channel bits. The programmable LUT is adapted to be implemented on a state trellis of arbitrary radix. The channel detector further includes a sectional precoder coupled to a channel... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.
20090231746 - Magnetic recording apparatus and magnetic recording medium: is satisfied in each of tracks, where BL represents a length of the recording element in a circumferential direction, GL represents a length of a gap between the recording elements in the circumferential direction, and ERL represents an effective recording length which is a length of an effective recording area... Agent: Oliff & Berridge, PLC
20090231748 - Magnetic recording medium, apparatus and method for recording reference signal in the same: A method for manufacturing a magnetic recording medium having a recording area includes the steps of forming in the recording area a conductive area that includes a plurality of sectors each made of a conductive magnetic body and is partitioned by a nonmagnetic insulator, and recording a reference signal in... Agent: Greer, Burns & Crain
20090231747 - Thermally assisted magnetic recording head and method of manufacturing the same: In order to prevent deterioration of floating characteristics of a slider due to deformation of a slider floating surface by thermal expansion of a coil, the followings are performed. A recessed portion is formed in a part of the slider, and a device for generating an optical near-field and the... Agent: Antonelli, Terry, Stout & Kraus, LLP
20090231750 - Disk array unit: A disk array unit connected to a host unit to give information thereto and receive information therefrom. The disk unit includes a plurality of disk units for storing information transmitted from the host unit and a management information recording device, formed by utilizing information storage areas in the disk units,... Agent: Mattingly & Malur, P.C.
20090231749 - Information storage device: A drive section which moves a head above an information storage medium and a control section are provided, and each track on the information storage medium is made up of alternating first regions for writing in and reading out user information and second regions that store information for the positioning... Agent: Greer, Burns & Crain
20090231751 - Method and apparatus for servo control associated with rotational speed of disk in disk drive: According to one embodiment, a disk drive is disclosed to which a plurality of disk rotational speed modes can be set. The disk drive is configured such that input of servo data from servo sectors is thinned out by thinning out an output of an interrupt request to a CPU... Agent: Knobbe Martens Olson & Bear LLP
20090231752 - Magnetic tape driving apparatus: A magnetic tape driving apparatus includes a magnetic head 2, a temperature/humidity sensor 4, a Peltier element 11, and a controller 15. The temperature/humidity sensor 4 that detects the temperature and humidity of the magnetic head 2 or in the vicinity thereof. The Peltier element 11 that cools the magnetic... Agent: Birch Stewart Kolasch & Birch
20090231753 - Stop position adjusting device and stop position adjusting method for accessor mechanism: A stop position adjusting device for an accessor mechanism in an information recording device using a recording cartridge, includes: the accessor mechanism; a first moving mechanism; a second moving mechanism; and an image taking section. The accessor mechanism inserts the recording cartridge into a cell and takes out the recording... Agent: Nec Corporation Of America
20090231754 - Fluid dynamic pressure bearing device, spindle motor and disk drive apparatus: A fluid dynamic pressure bearing device includes a shaft, an annular member, and a rotating member. The annular member is fixed to or seamlessly defined with the shaft and is radially opposed to the rotating member. The annular member and the rotating member are covered with a seal member. A... Agent: Nidec Corporation C/o Keating & Bennett, LLP
20090231755 - Magnetic recording medium and magnetic recording and reproducing apparatus: The invention provides a magnetic recording medium, and a magnetic recording and reproducing apparatus. The magnetic recording medium includes a substrate 11, an under layer 12 formed on the substrate 11, a magnetic recording layer 13 formed on the under layer 12, and a protective layer 14 formed on the... Agent: Sughrue Mion, PLLC
20090231756 - Multi-channel tape head having asymmetric channel arrays: A magnetic head comprises identical, opposing modules each comprising an array of paired data transducers, the transducers including data readers, data writers, or combinations thereof. For each array, the transducers in each subset may have about the same center to center spacing. A first subset of the transducers is operable... Agent: Zilka-kotab, PC- Ibm
20090231757 - Head for tape drive with transversely varying contour: A system comprises a head having a tape bearing surface and an array of transducers in the tape bearing surface, the transducers being selected from a group consisting of readers, writers and servo readers, a length of the array being defined between outer transducers thereof, the head having a feature... Agent: Zilka-kotab, PC- Ibm
20090231759 - Head slider, head assembly and information storage device: A head slider body includes a main body having a protruding air bearing surface, and a wall portion protruding from the air bearing surface near one end in one axial direction of the main body. Extending in the other axial direction in the air bearing surface, a groove portion extends... Agent: Greer, Burns & Crain
20090231758 - Head suspension unit and head suspension assembly: A groove is formed on the surface of a base plate in a head suspension unit. A flexure extends from a load beam and received in the groove of the base plate. The flexure is thus allowed to extend outward from the contour of the base plate at a position... Agent: Greer, Burns & Crain
20090231760 - Head clip and working method using the same: A head clip used in a task of assembly, inspection, and maintenance such as repair or cleaning of a device having a head attached to an actuator, and to a working method using the head clip. The heads are located at an extreme end of the actuator. The head clip... Agent: Greer, Burns & Crain
20090231761 - Head suspension assembly and storage device: A head suspension assembly includes a head suspension, a load beam having a protrusion, a flexure attached to a surface of the head suspension at a back surface of the flexure and a support plate defined on the flexure. A head slider is secured to the support plate. The support... Agent: Greer, Burns & Crain
20090231762 - Magnetoresistive effect element and thin-film magnetic head with the magnetoresistive effect element: An MR element includes a pinned layer, a free layer and a nonmagnetic space layer or a tunnel barrier layer sandwiched between the pinned layer and the free layer. A magnetization direction of the free layer is substantially perpendicular to a film surface thereof, and a magnetization direction of the... Agent: Oliff & Berridge, PLC09/10/2009 > patent applications in patent subcategories. class, title,number
20090225461 - Data storage device: A device for storing data includes: a medium for storing data, the medium having a plurality of areas in a circumferential direction; a head including a read element for reading data from the medium along the circumferential direction, a write element for writing data into the medium along the circumferential... Agent: Greer, Burns & Crain
20090225462 - Magnetic tape device: The invention provides a magnetic tape device including a magnetic head; a drive unit; an abnormality detector for detecting an abnormality in operation of the magnetic tape; and a release unit for releasing the contact between the magnetic tape and the magnetic head when the abnormality detector detects any abnormality... Agent: Nec Corporation Of America
20090225463 - Method for playing media file without interruption: A method for playing a media file from a hard disc drive (HDD) within a portable personal computer without interruption is disclosed. The portable type personal computer is provided with an impact protection system for the HDD. A media player plays a media file by reading a group of data... Agent: Dillon & Yudell LLP
20090225464 - Laser power sensor for thermally assisted magnetic recording: An apparatus, system, and method for measuring thermally induced electric resistance changes in thermally assisted magnetic recording are disclosed for monitoring laser light output in thermally assisted magnetic recording disk drives. An electrical lead is coupled to a read/write head element. A first electrical resistance in the read/write head element... Agent: Kunzler & Mckenzie
20090225466 - Hard disk drive adapted to detect free-fall and perform emergency parking of read/write head prior to impact: A hard disk drive (HDD) includes a spindle motor, an actuator, a static eccentricity sensor, a monitor and a central controller. The spindle motor includes a rotary body and a static body adapted to support the rotary body, where the spindle motor is adapted to rotate a disk. The actuator... Agent: Volentine & Whitt PLLC
20090225465 - Magnetic recording head and magnetic recording apparatus: A magnetic recording head includes a main magnetic pole, and a laminated body. The laminated body includes a first magnetic layer, a second magnetic layer, a first intermediate layer provided between the first magnetic layer and the second magnetic layer, and a third magnetic layer laminated with the first and... Agent: Nixon & Vanderhye, PC
20090225467 - Method of creating correction table for head position control, head position control method, and disk device: A head position control method controls the position of a head by correcting components synchronizing rotation of a disk based on the head control amount. A correction signal for components synchronizing rotation is generated by using a filter function. The filter function that integrates the sine and cosine terms of... Agent: Greer, Burns & Crain
20090225468 - Magazine access restriction with deep slot technology: A magazine includes a housing defining an interior space and an exterior space and a plurality of storage slots disposed within the housing. The magazine further includes at least one cartridge blocker that alternates between an open position and a closed position, wherein the open position provides access to at... Agent: Hamilton & Terrile, LLP IBM Tucson
20090225469 - Method of manufacturing a drive apparatus, connection circuit board, and drive apparatus using the same: A method of manufacturing a drive apparatus electrically connects a motor and a control circuit board for the motor without causing poor connections. When manufacturing a drive apparatus that rotationally drives a recording medium using a motor, the motor, which is connected in advance to one end of a connection... Agent: Greer, Burns & Crain
20090225470 - System, method and apparatus for disk drive recirculation filter having inlet and outlet disk rim shrouding: A hard disk drive has a recirculation filter that shrouds the rims of disks at the inlet and outlet of the filter. The shroud is aerodynamically shaped to reduce flow-induced disk vibration of the read/write head. A significant improvement in non-repeatable run-out is provided when the inlet and outlet are... Agent: Larson Newman Abel & Polansky LLP
20090225471 - Disk device: A disk device includes: an enclosure to enclose a cavity; a plurality of disk media rotatably mounted in the enclosure and arranged along a rotation axis; and heads, movably mounted in the enclosure, to read/record data from/onto corresponding disk media; at least a first one of the disk media exhibiting... Agent: Greer, Burns & Crain
20090225472 - Recording tape cartridge: The present invention provides a recording tape cartridge with a retention structure capable of stabilizing and retaining a memory board without deformation of the memory board. A recording tape cartridge includes a case for accommodating a reel on which recording tape is wound, the case formed by an upper case... Agent: Akerman Senterfitt
20090225473 - Magnetic recording medium and method of making the same: A magnetic recording medium includes a plurality of recording tracks magnetically continuous with respect to a recording direction and arranged intermittently in a track width direction, a plurality of recording dots intermittently formed in the recording tracks in the recording direction and a plurality of space dots alternately formed in... Agent: Staas & Halsey LLP
20090225474 - Magnetic disk apparatus with heating device and magnetic head slider used therefor: Embodiments of the invention achieve a decrease in electric power consumption while ensuring high recording density and high reliability in a magnetic disk apparatus. In one embodiment, a magnetic disk apparatus comprises a rotatable magnetic disk and a magnetic head slider to be able to fly above a surface of... Agent: Townsend And Townsend And Crew LLP
20090225475 - Disk drive suspension: A suspension is provided with a load beam and a flexure including a tongue on which a slider is mounted. A limiter is formed by cutting and raising a part of the tongue. The limiter includes a bent portion and arm. The tongue has an opening that is left after... Agent: Frishauf, Holtz Goodman & Chick, P.C.
20090225476 - Head stack assembly, manufacturing method thereof and multi-disc magnetic storage device: Embodiments of the present invention provide a head stack assembly and a manufacturing method thereof in which manufacturing costs as a multi-disc magnetic device are reduced by increasing the yield and reducing inventory of magnetic heads which can be assembled to the head stack assembly. According to one embodiment, a... Agent: Townsend And Townsend And Crew LLP
20090225477 - Magnetoresistance effect element, magnetic head, magnetic reproducing apparatus, and magnetic memory: A magnetoresistance effect element comprises a magnetoresistance effect film and a pair of electrode. The magnetoresistance effect film having a first magnetic layer whose direction of magnetization is substantially pinned in one direction; a second magnetic layer whose direction of magnetization changes in response to an external magnetic field; a... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.09/03/2009 > patent applications in patent subcategories. class, title,number
20090219638 - Magnetic sensor device, magnetic reproduction head, magnetic reproducer, and magnetic reproducing method: There are provided a magnetic layer 2, a buffer layer 3 deposited on the magnetic layer 2, and a magnetic sensing section 7 constituted by a magneto-resistive device in which a fixed magnetization layer 4, a non-magnetic layer 5, and a magnetization-free layer 6 are deposited on the buffer layer... Agent: Edwards Angell Palmer & Dodge LLP
20090219639 - Extending the operational lifetime of a hard-disk drive used in video data storage applications: A storage buffer and a hard-disk drive are provided in a video data storage application. The hard-disk drive operates normally in a powered-down state, and video data are stored in the storage buffer during a first time interval. The hard-disk drive is operated in a powered-up state. A portion of... Agent: Stoel Rives LLP - Pdx
20090219640 - Recording apparatus and broadcast receiving apparatus: According to one aspect of the embodiment, a recording apparatus includes: a recording medium unit having a metal face; a control circuit configured to operate the recording medium unit; a connector electrically connected to the control circuit and configured to transfer data between an external apparatus and the recording medium... Agent: Blakely Sokoloff Taylor & Zafman LLP
20090219642 - Magnetic disk apparatus and data storage method: A magnetic disk apparatus 1 that uses a head 50 to write data in a plurality of unit areas arranged in an adjacent relationship to each other on a surface of a magnetic disk 60, and includes: a first recording section that records, in a RAM 12, the position of... Agent: Greer, Burns & Crain
20090219641 - Phase locked notch filter in a servo control loop: A notch filter in a servo control loop is phase locked to a nonrepeatable runout component of a servo control loop signal. The phase locked notch filter may thereby more effectively track time varying characteristics of the nonrepeatable runout component so that they can be at least partially reduced in... Agent: Myers Bigel Sibley & Sajovec, P.A.
20090219644 - Determining a reel motor angle using an estimated interval to degrees translation factor: Provided are techniques for determining a reel motor angle. An estimate of an interval to degrees translation factor that represents a measurement angle interval divided by a first pulse count is calculated, wherein the first pulse count represents format transitions counted during an angular measurement interval. A reel motor angle... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37
20090219643 - Determining angular position of a tape reel using timing based servo format: Provided are techniques for determining an angular position of a tape reel. A first edge of a hall sensor is identified. A number of format transitions on a timing based servo formatted tape are counted until detecting a predetermined edge of the hall sensor. A reel circumference is determined. A... Agent: Konrad Raynes & Victor, LLP. Attn: Ibm37
20090219645 - Apparatus and method to decode linear position information encoded in a sequential information storage medium: A method to decode linear position (“LPOS”) information encoded in a sequential information storage medium, by detecting each of one or a plurality of sequential first LPOS servo patterns encoded in a first servo band using a first servo sensor in communication with a first servo channel. While detecting that... Agent: Dale F. Regelman Quarles & Brady, LLP
20090219646 - Positioning control system and method therefor: There is provided with a positioning control system which includes: a head moving unit configured to move a head for recording or reproducing information with respect to a disk capable of recording information; a position detecting unit configured to detect a position of the head; an error detecting unit configured... Agent: Turocy & Watson, LLP
20090219647 - Dielectrophoretic tweezers apparatus and methods: Dielectrophoretic (DEP) tweezers apparatus and methods for various applications, including particle trapping. Two electrodes are disposed on or otherwise constitute an elongated object forming a tip. A voltage is applied across these electrodes to produce a non-uniform electromagnetic field proximate to the tip thereby creating a dielectrophoretic trap. Once trapped,... Agent: Wolf Greenfield & Sacks, P.C.
20090219648 - Apparatus, system, and method for limiting frame spacing error during timing-based servo pattern fabrication: An apparatus, system and method to limit frame spacing error during timing-based servo pattern fabrication. An apparatus in accordance with the invention may include a first servo write head to simultaneously write servo stripes onto a first servo frame of a magnetic tape, and a second servo write head to... Agent: Kunzler & Mckenzie
20090219649 - Perpendicular magnetic write head having a novel trailing return pole for reduced wide-area-track-erasure: A magnetic write head having a magnetic return pole that is configured to prevent wide area track erasure. The magnetic return pole has a throat region with a relatively narrow width and has a inner and outer wing portions formed near the air bearing surface. The inner wing portion has... Agent: Zilka-kotab, PC- Hit
20090219650 - Methods and apparatus for proximity detection of hard disk drive read heads: Methods and apparatus for proximity detection of hard disk drive read heads are disclosed. A disclosed method comprises forming a first signal having a frequency, a first amplitude, and a first offset voltage, forming a second offset voltage substantially equal to the first offset voltage from the first signal, amplifying... Agent: Texas Instruments Incorporated
20090219651 - Air-bearing design for hard disk drive (hdd) applications: A slider is formed with an ABS topography that eliminates the accumulation of lubricant swept from the surface of a rotating disk in an operating HDD. The topography includes air channeling grooves in which are formed backflow blocking elements that prevent the formation airflow patterns that would cause lubricant to... Agent: Saile Ackerman LLC
20090219652 - Actuator for access to strorage media: The invention relates to actuators on pickups for access to moving storage media. An actuator according to the invention comprises a circuit board which, in an edge region, has a metallization on its edge or metallizations adjacent to the edge on two or more inner or outer surfaces, suspension wires... Agent: Thomson Licensing LLC
20090219653 - Head slider equipped with piezoelectric element: A head slider includes a slider substrate, an actuator provided in an end portion of the slider substrate and equipped with a piezoelectric element, and a magnetic head disposed on a side opposite to the slider substrate with interposition of the actuator. The piezoelectric element has piezoelectric bodies polarized along... Agent: Westerman, Hattori, Daniels & Adrian, LLPPrevious industry: Optical: systems and elements
Next industry: Electricity: electrical systems and devices
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