Patents
Patents for G11B 5 - Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (87,826)
01/2001
01/23/2001US6178072 Keeper layer without sense current shunting in a giant magnetoresistive (GMR) head
01/23/2001US6178071 Spin-valve type thin film element and its manufacturing method
01/23/2001US6178070 Magnetic write head and method for making same
01/23/2001US6178069 Microactuator and method of manufacturing the same
01/23/2001US6178068 Quasi contact head having a disk contacting portion
01/23/2001US6178066 Method of fabricating an improved thin film device having a small element with well defined corners
01/23/2001US6178065 Thin film magnetic head and manufacturing method of the head
01/23/2001US6178064 Air bearing slider with shaped taper
01/23/2001US6178060 Current profile shaping to reduce disc drive seek time variation and acoustic noise generation
01/23/2001US6178059 Method for writing servo information on a magnetic recording disk
01/23/2001US6178058 Off-track write protection method and system for induced mechanical disturbance on a disk drive
01/23/2001US6178057 Disk unit and read/write control method
01/23/2001US6178056 Disk drive employing state variable trap registers for providing stored servo and user data state variables to sampled-data channel
01/23/2001US6178055 Low ripple negative voltage supply for a disc drive
01/23/2001US6178054 Selecting write fault thresholds by head and disc location in a disc drive
01/23/2001US6178053 Storage apparatus for reducing a read error caused by a thermal asperity of a magneto-resistive head
01/23/2001US6177208 Used for an auxiliary recording system of computers; magnetic layer consists of non-magnetic oxide (silicon, aluminum, tantalum, yttrium, titanium) or nitride of boron, silicon, aluminum and magnetic alloy of cobalt and platinum
01/23/2001US6177207 Inductive type combination read/write thin film magnetic head to be mounted on the hard disk device
01/23/2001US6177204 Ferromagnetic GMR material and method of forming and using
01/23/2001US6177168 DVD disc with four information layers, and method for making same
01/23/2001US6176932 Thin film deposition apparatus
01/23/2001US6176245 Web cleaning and destaticizing apparatus
01/23/2001US6176005 Method of making read head with improved lead layers
01/23/2001US6175984 Apparatus for cleaning precision components
01/18/2001WO2001004970A1 Ferromagnetic double quantum well tunnel magneto-resistance device
01/18/2001WO2001004898A1 Magneto-optical disk recording and/or reproducing device
01/18/2001WO2001004879A1 Tracking system for recording/reading a data medium and recording medium
01/18/2001WO2001004878A1 Magnetoresistance effect head, method for producing magnetoresistance effect head, and information reproducing device
01/18/2001WO2001004725A2 Servo write head
01/18/2001WO2001004655A1 Method and apparatus for testing magnetic head elements
01/18/2001WO2000063894B1 Dual stage servo controller
01/18/2001WO2000051112B1 Advanced servo writing method for hard disc drives
01/18/2001DE10034351A1 Mehrstufiger Kontaktaufbau und Verfahren zur Herstellung von dicht gepackten Anschlüssen bei magnetischen Aufzeichnungsköpfen A multi-stage contact structure and method for the production of densely packed connections in magnetic recording heads
01/18/2001DE10029593A1 Recording and reproducing data on storage medium in which storage medium is part of read/write signal path
01/18/2001DE10020190A1 Defect information management method for magnetic disc systems e.g. hard-disc drives, involves changing displaced address of one set of first defect elements so that second defect is localised via resulting defect list
01/17/2001EP1069780A2 Digital serial data interface
01/17/2001EP1069558A2 Tape driving computer system
01/17/2001EP1069557A2 Drive circuits for magnetic heads and winding configurations of magnetic heads
01/17/2001EP1069553A1 Magnetic recording medium and polyester film therefor
01/17/2001EP1069552A1 Process for assembling a microactuator and a transducer in a hard disk R/W unit
01/17/2001EP1068541A1 Magnetic digital signal coupler
01/17/2001EP1068163A1 Silicon carbide memory board substrate with a germanium and silicon coating
01/17/2001EP0649136B1 A method for recording digital data
01/17/2001CN1280370A Flexible wiring base unit and wiring board
01/17/2001CN1280356A Base board for magnetic disc, method for producing disc and disc base board
01/17/2001CN1060905C Recording format, method and apparatus for audio signal of VCR
01/17/2001CN1060875C Magnetic resistance effective film magnetic head
01/17/2001CN1060874C Method for manufacture of magnotic head and clamp for closing casing of magnetic head during manufacture same
01/16/2001US6175629 Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk
01/16/2001US6175541 Data recording medium and recording/reproducing apparatus for providing optimum position of mark start and end parts
01/16/2001US6175477 Seed and cap layers of spin valve are formed of a non-magnetic, electrically insulating oxide of nickel and manganese which improves thermal stability and giant magnetoresistance coffiecinet of the sensor
01/16/2001US6175476 The high resistivity antiparallel coupling layer typically is formed of rhenium; high resistivity of the antiparallel coupling layer reduces shunt current through that layer to improve giant magnetoresistance ratio of spin valve
01/16/2001US6175475 Fully-pinned, flux-closed spin valve
01/16/2001US6175474 Base plate with improved torque retention
01/16/2001US6175473 Magnetic head in which a core assembly is mounted on a rail formed on a slider
01/16/2001US6175472 Method for generating a position error signal calibration curve in a hard disk drive
01/16/2001US6175469 Disc drive magnet housing electro mechanical resonance dampening system
01/16/2001US6175465 Head positioning control system for use in a disk storage drive
01/16/2001US6175463 Architecture for hard disk drive write preamplifiers
01/16/2001US6175462 High input impedance single ended, low supply voltage magnetoresistive preamplifier circuits
01/16/2001US6175461 Rotary head block with rotary transformer having separate channels for power signal and playback signal
01/16/2001US6175460 Magnetic recording and reproduction apparatus
01/16/2001US6175459 Magnetic disk drive with a disk medium defect detector and read channel IC used in the drive
01/16/2001US6175458 Control of servo timing mark detection windows
01/16/2001US6175457 Dual polarity thermal asperity detector for direct access storage device (DASD)
01/16/2001US6175456 Circuit for controlling the write current of a magnetic disk recording apparatus and method for optimizing the write current
01/16/2001US6174827 Glass-ceramic substrate for an information storage medium
01/16/2001US6174736 Method of fabricating ferromagnetic tunnel junction device
01/16/2001US6174598 Magnetic recording medium, non-magnetic alloy film and sputtering target
01/16/2001US6174597 Magnetic recording apparatus
01/16/2001US6174582 Fabricating by depositing a seed layer of a refractory metal such as tantalum, and reactive element such as nitrogen or oxygen; depositing a nonmagnetic underlayer onto seed layer, and depositing a magnetic layer; high coercivity; disk drives
01/16/2001US6174218 Bow compensated lapping
01/16/2001US6173486 Thin film magnetic head with self-aligned pole tips
01/16/2001US6173485 Method for manufacturing magnetic head apparatus with slider and suspension
01/16/2001CA2146318C Position sensing systems including magnetoresistive elements
01/16/2001CA2095035C Unshielded horizontal magnetoresistive head and method of fabricating same
01/11/2001WO2001003131A1 Spin bulb magnetoresistance effect head and compound magnetic head using it and magnetic recording medium drive unit
01/11/2001WO2001003130A1 Spin-valve magnetoresistance effect head, composite magnetic head comprising the same, and magnetoresistance recorded medium drive
01/11/2001WO2001003129A1 Method of manufacturing thin-film magnetic head
01/11/2001WO2001003128A1 Sealing glass for magnetic head and magnetic head using the same
01/11/2001WO2001003127A1 Head slider and recording medium drive
01/11/2001WO2001002300A1 Method for making m-type hexaferrite powders or wafers
01/11/2001WO2000063907A3 Rotationally optimized seek initiation
01/11/2001WO2000063892B1 Inertial latch for mobile disc drive
01/11/2001DE19930981A1 Mehrschichtige, biaxial orientierte Polyesterfolie, Verfahren zu ihrer Herstellung und ihre Verwendung als Magnetbandfolie ohne Rückseitenbeschichtung Multi-layer, biaxially oriented polyester film, process for their preparation and their use as a magnetic tape film without backcoat
01/11/2001DE10032565A1 Magnetic disc substrate for external computer data storage units has a specified linear expansion coefficient in both thickness and radial directions
01/10/2001EP1067567A1 Diskette type memory card adapter, magnetic sensor therefor magnetic core, method for manufacturing the magnetic core
01/10/2001EP1067542A2 Data recording apparatus and method, and data playback apparatus and method
01/10/2001EP1067518A2 Magnetic recording medium
01/10/2001EP1067517A1 Magnetic recording medium
01/10/2001EP1067516A1 Magnetic recording medium
01/10/2001EP1067515A2 Recording/reproducing head and recording/reproducing apparatus incorporating the same
01/10/2001EP1067302A1 Systems for recording and/or playing magnetic tapes equipped with drum assemblies, drum assemblies and methods for assembling such products
01/10/2001EP1067102A2 Substrate for information recording medium and magnetic recording medium composed of crystallized glass
01/10/2001EP1067101A2 Process for preparation of crystallized glass for information recording disk
01/10/2001EP1066960A2 Multilayered, biaxially oriented polyester film, method for its production and its use as magnetic tape film free from back side coating
01/10/2001EP1066634A1 Data storage apparatus and methods
01/10/2001CN1279465A Sliding support structure of disc machine
01/10/2001CN1279464A Magnetic head assembly with IC core arranged on floatation part of mangetic disc by ultrasonic welding process
01/10/2001CN1279463A Soft magnetic film and magnetic head therewith