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| Number | Title | Issue Date |
| 7340661 | Computer program product for performing testing of a simulated storage device within a testing simulation environment A computer program product for performing testing of a simulated direct access storage device in a testing simulation environment is disclosed. The computer program product provides a software representation of a plurality of hardware components within the simulated... | 03/04/2008 |
| 7289169 | Storage of projected presentations A method and system for capturing real-time digital image data that is in rasterized form. A digital source sends rasterized data to a storage device, which passes the rasterized data to a display device. The rasterized data is then converted into a page format, suc... | 10/30/2007 |
| 7284150 | System and method for reliably storing data and providing efficient incremental backup and asynchronous mirroring by preferentially handling new data According to the present invention, there is provided a method for reliably storing data in a computer system. The method includes receiving a piece of data to be stored at a storage system. In addition, the method includes writing a first copy of the data to the st... | 10/16/2007 |
| 7231495 | Speculative data streaming disk drive and system A disk drive capable of supporting speculative data transfers. Requested first data are read from the disk drive. Before the first data are read, a determination is made as to whether there are un-requested second data that are likely to be requested at a later time... | 06/12/2007 |
| 7230805 | Semiconductor slider with an integral spin valve transistor structure and method for making same without a bonding step A semiconductor slider including an integral spin valve transistor (SVT) having a read width of 250 nm or less disposed on a monolithic semiconductor. substrate, useful in magnetic data storage applications. The monolithic slider may also include other magnetic and ... | 06/12/2007 |
| 7191508 | Method for manufacturing thin-film magnetic head sliders A method for manufacturing thin-film magnetic head sliders is disclosed. Initially, an elastic layer, which may be made of poly-dimethyl siloxane (PDMS), is spun on a wafer and is thermally cured. Then, a resist layer is spun on the elastic layer. Both the resist la... | 03/20/2007 |
| 7165201 | Method for performing testing of a simulated storage device within a testing simulation environment A method for performing testing of a simulated direct access storage device in a testing simulation environment is disclosed. The method provides a software representation of a plurality of hardware components within the simulated direct access storage device. The m... | 01/16/2007 |
| 7136247 | Drive temperature self-adjustment for temperature-sensitive measurements A method and program product supporting adjusting a temperature of a hard disk drive (HDD) during testing. An HDD test program is performed within a pre-determined optimal test temperature range. The HDD is kept within this pre-determined test temperature range by s... | 11/14/2006 |
| 7082017 | High magnetoresistance spin valve sensor with self-pinned antiparallel (AP) pinned layer structure A spin valve sensor includes a spacer layer which is located between a free layer and an antiparallel (AP) pinned layer structure wherein the AP pinned layer structure includes an antiparallel coupling layer which is located between and interfaces first and second A... | 07/25/2006 |
| 7075760 | CPP sensor with in-stack biased free layer A magnetic head assembly includes a read head with a current perpendicular to the planes (CPP) sensor. The CPP sensor includes an AP pinned layer structure, a free layer and a spacer layer which is located between the free layer and the AP pinned layer structure. An... | 07/11/2006 |
| 7064938 | Spin valve sensor with a nitrogen sputtered free layer A method makes a spin valve sensor of a magnetic read head which includes the steps of forming a ferromagnetic pinned layer structure that has a magnetic moment, forming a pinning layer exchange coupled to the pinned layer structure for pinning the magnetic moment o... | 06/20/2006 |
| 7019933 | Servo information write method, servo control method, data storage device, and program A servo system wherein a read head R detects a servo pattern that is written on a magnetic disk by a write head W. Position control of the write head W is exercised in accordance with the detected servo pattern, and the read head R detects a propagation pattern that... | 03/28/2006 |
| 7016167 | Spin valve transistor with stabilization and method for producing the same A method and structure for a spin valve transistor (SVT) comprises a magnetic field sensor, an insulating layer adjacent the magnetic field sensor, a bias layer adjacent the insulating layer, a non-magnetic layer adjacent the bias layer, and a ferromagnetic layer ov... | 03/21/2006 |
| 7001499 | Method for electroplating a body-centered cubic nickel-iron alloy thin film with a high saturation flux density A process for electroplating and annealing thin-films of nickel-iron alloys having from 63% to 81% iron content by weight to produce pole pieces having saturation flux density (BS) in the range from 1.9 to 2.3 T (19 to 23 kG) with acceptable magnetic anis... | 02/21/2006 |
| 6983530 | Method of making a dual GMR read head with self-pinned layer and specular reflector A dual GMR or dual spin valve sensor has a self-pinned layer which has its magnetic moment pinned perpendicular to an air bearing surface by sense current fields from conductive layers in the dual spin valve sensor when a sense current is conducted therethrough. Thi... | 01/10/2006 |
| 6965229 | Method of detecting polarity reversal in a magnetoresistive sensor A method is provided for testing a magnetoresistive sensor for polarity reversal. In one embodiment, the method includes: writing a test pattern on a magnetic disk; providing a mechanical or thermal stress to the magnetoresistive sensor for a period of time; and, co... | 11/15/2005 |
| 6961198 | Method and apparatus for controlling data read/write between a hard disk and a hard disk controller An apparatus for controlling data read/write between a hard disk and a hard disk controller is disclosed. The hard disk includes a disk for storing data, multiple read/write heads for reading or writing data onto the disk in accordance with a read request or write r... | 11/01/2005 |
| 6950260 | Thermally assisted magnetic recording system and method of writing using magnetic and thermal gradients A magnetic recording system is provided having a write head employing a combination of magnetic write field gradient and thermal gradient to write data on a ‘thermal spring’ magnetic recording media. The write head comprises a magnetic element using a write curr... | 09/27/2005 |
| 6947243 | Method and system for time-shift based rotational vibration sensing in disk drives A method (and structure) senses a rotational vibration of a disk drive. The disk drive includes a rotating disk. The disk includes a plurality of reference bits across a surface thereof. The method (and structure) includes detecting the reference bits across a patte... | 09/20/2005 |
| 6937408 | Rotation recording apparatus and method of inspection thereof In addition to the conventional test pattern writing in a center of each track and inspection of burst patterns (A and B patterns) through a writing test in a SAT, there is also performed a test pattern data writing test, which is done at each boundary between track... | 08/30/2005 |
| 6934107 | Hard disk drive having drive temperature self-adjustment for temperature-sensitive measurements A hard disk drive (HDD) capable of controlling its own internal temperature during testing. A test program embedded in the HDD is run only within a pre-determined optimal test temperature range. The internal temperature of the HDD is kept within this pre-determined ... | 08/23/2005 |
| 6930866 | Magnetic tunnel junction sensor having a longitudinal bias layer in contact with a free layer A magnetic tunnel junction (MTJ) sensor in which the free layer longitudinal biasing elements are coupled, without insulation, to the free layer outside of the MTJ stack to provide reliable non-shunting MTJ free layer stabilization without extremely thin dielectric ... | 08/16/2005 |
| 6927948 | Differential CPP GMR sensor with free layers separated by metal gap layer A differential current-perpendicular-to-the-plane (CPP) giant magnetoresistive (GMR) sensor is provided having nonmagnetic high conductivity leads to achieve low lead resistance. The differential CPP GMR sensor comprises a first spin valve (SV) sensor, a second SV s... | 08/09/2005 |
| 6919280 | Method of removing magnetoresistive sensor cap by reactive ion etching During manufacture, a magnetoresistive sensor having a ferromagnetic free layer is commonly provided with a tantalum cap layer. The tantalum cap layer provides protection to the sensor during manufacture and then is typically removed after performing annealing. The ... | 07/19/2005 |
| 6917488 | Data storage device, head positioning apparatus and head positioning method A method and apparatus for resolving a “continuity” problem that occurs when modes are switched in the head positioning control process, and a contradiction exists between a short seek and a long seek. ... | 07/12/2005 |
| 6913782 | Fabrication of self-aligned reflective/protective overlays on magnetoresistance sensors, and the sensors A magnetoresistance sensor is fabricated using a sensor structure including a free layer deposited upon a lower layered structure and depositing an oxide structure overlying the free layer. The depositing of the oxide structure includes the steps of depositing a buf... | 07/05/2005 |
| 6914745 | Head movement controlling based on servo generated speed control values The hard disk drive comprises: a magnetic disk 2 having servo information stored; magnetic heads 4 seeking on the magnetic disk 2 and staying at a predetermined position to read or write data; a voice coil motor 6 moving the magnetic head... | 07/05/2005 |
| 6907655 | Method for manufacturing a spin valve having an enhanced free layer A spin valve sensor is provided with a negative ferromagnetic coupling field −HFC for properly biasing a free layer and a spin filter layer is employed between the free layer and a capping layer for increasing the magnetoresistive coefficient dr/R of th... | 06/21/2005 |
| 6891740 | Method for speculative streaming data from a disk drive A method and program product supporting speculative data transfers in a disk drive. Requested first data are read from a disk. Before the first data are read, a determination is made as to whether there are un-requested second data that are likely to be requested at... | 05/10/2005 |
| 6881497 | ‘Thermal spring’ magnetic recording media for writing using magnetic and thermal gradients A thermal spring magnetic medium is provided having first and second stacks providing two exchange coupled ferromagnetic layers having different Curie temperatures. The first stack has a high magneto-crystalline anisotropy, a relatively low saturation magnetization ... | 04/19/2005 |
| 6871998 | Method for calibrating a vacuum thermogravimetric analyzer for determination of vapor pressures of compounds The invention provides a method for accurately calibrating a vacuum thermogravimetric analyzer (VTGA). The invention solves the problem of calibrating a VTGA by using the actual magnetic transitions and associated transition temperatures, or Curie temperatures, T | 03/29/2005 |
| 6865506 | Computer system having drive temperature self-adjustment for temperature-sensitive measurements A computer system that adjusts an internal temperature of a hard disk drive (HDD) during HDD testing. An HDD test program under the control of the computer system is performed within a pre-determined optimal test temperature range. The HDD is kept within this pre-de... | 03/08/2005 |
| 6855240 | CoFe alloy film and process of making same A cobalt-iron alloy film having saturation magnetization of at least about 2.30 Telsa. The film alloy includes about 55 wt % to about 75 wt. % iron and the remainder cobalt. The film is made by a process in which the film is electrodeposited from an aqueous medium w... | 02/15/2005 |
| 6844144 | Single slider air bearing process using polymer brush formation A method of constructing an air bearing on a single slider used as a support for a magnetic recording head is described. A recessed surface of the air bearing is constructed by: applying a polymerization initiator (preferably azomonochlorsilane), forming a pattern i... | 01/18/2005 |
| 6842316 | Magnetic spin valve sensor having an exchange stabilization layer recessed from the active track edge A magnetic spin valve sensor is provided which has antiparallel coupled end tabs to magnetically stabilize the free layer. The antiparallel coupled bias stabilization tabs include antiferromagnetic layers which are laterally recessed from the ends of the ferromagnet... | 01/11/2005 |
| 6835476 | Antiferromagnetically coupled magnetic recording media with CoCrFe alloy first ferromagnetic film A magnetic recording medium for data storage uses a magnetic recording layer having at least two ferromagnetic films exchange coupled together antiferromagnetically across a nonferromagnetic spacer film. In this antiferromagnetically-coupled (AFC) recording layer th... | 12/28/2004 |
| 6803119 | Oriented magnetic recording media on a nonmetallic substrate This invention provides a disk which has an in-plane oriented magnetic recording layer on a glass, ceramic, or other nonmetal substrate and a method for making the disc. A thin layer of texturable NiP is sputtered on the substrate. This NiP layer is textured before ... | 10/12/2004 |
| 6797130 | Laser textured magnetic disk A magnetic disk is provided which comprises a nonmetallic glass or glass ceramic substrate having one or more under layers, a magnetic layer applied over the under layers, and a hard carbon layer applied over the magnetic layer. A plurality of bumps are formed on th... | 09/28/2004 |
| 6785079 | Method and apparatus for estimating the flyheight of an airbearing slider in a storage device A method and apparatus for estimating the flyheight of an airbearing slider in a storage device. The slider floats on an airbearing over a rotating storage disk. The storage disk includes a washboard-sequence having washboard-sections each comprising surface profile... | 08/31/2004 |
| 6785099 | Read gap improvements through high resistance magnetic shield layers A read head is provided having having ultrathin read gap layers with improved insulative properties between a magnetoresistive sensor and ferromagnetic shield layers. The read head comprises a magnetoresistive sensor with first and second shield cap layers made of h... | 08/31/2004 |
