Dynamic magnetic information storage or retrieval inventions 06/06

20060139785 - Magnetic transfer method and apparatus: According to the present invention, since the suction force of the suction holes or suction grooves formed in the suction surface is varied among the joining step, transfer step, and separation step according to the suction force needed to hold the master disk in the respective steps, the suction force...

20060139786 - Method and apparatus for exchanging data with a hard disk: Techniques for storing and reading data on/from a hard disk are disclosed. According to one aspect of the present invention, a hard disk is provided with a parameter storage block for storing a number of parameters. One of the parameters is a last physical address the hard disk was accessed....

20060139787 - Head amplifier circuit with function for degaussing residual magnetism of recording head: In a data-recording mode, a driver circuit supplies a recording head with a recording current corresponding to write data. In a degaussing mode, the driver circuit supplies the recording head with a degaussing current for eliminating the residual magnetism of the head as the recording current. The degaussing current has...

20060139789 - Apparatus, medium, and method controlling flying height of a magnetic head of a disk drive: Provided is an apparatus, medium, and method controlling a flying height of a magnetic head of a disk drive so that a clearance between a disk and the magnetic head in a data write mode can be similar, e.g., substantially the same, as that of the magnetic head in a...

20060139790 - Data storage device and data storage device control method: Embodiments of the invention avoid an off-track write when an impact is applied. A hard disk drive according to one embodiment of the present invention comprises a magnetic disk; an actuator for moving a head element section over the magnetic disk; and an HDC/MPU for prohibiting the head element section...

20060139788 - Method, medium, and apparatus recording a servo pattern: A method, medium, and apparatus recording a magnetic disk servo pattern. The method of recording a servo pattern, including servo information, on a magnetic disk may include an erasing of erase regions existing between burst signals contained in a burst signal recording zone of a servo pattern of the magnetic...

20060139791 - Magnetic disk drive and read/write method to reduce read error rate: Embodiments of the invention reduce the error rate of a read error that is caused by a spacing interval between a write head and a read head, which are formed on a slider. In one embodiment, a write head writes user data, which is placed at a position, on a...

20060139792 - Track-seek control method of hdd and recording medium suitable for the same: A seek control method of smoothly changing to a coast mode and a deceleration mode in a track-seek control device according to a multi-sinusoidal acceleration trajectory, a recording medium suitable for the same, and an HDD adopting the same. The method includes: calculating time of an accelerating duration from a...

20060139795 - Information recording and reproducing unit: In a circuit device of this invention, a support base member, which holds an electronic component and circuit for supplying a control signal to a rotating carriage, is formed integrally with a carrier member via a plurality of cutting areas which are to be cut out from the carrier member,...

20060139794 - Magnetic disk apparatus: A magnetic disk apparatus includes a magnetic recording media having a substrate, a data recording layer formed on one surface of the substrate and including a magnetic recording layer, and a shield layer formed on the other surface of the substrate and including a soft magnetic layer and no magnetic...

20060139793 - Method of fabricating a workpiece from a sheet of material: A method of fabricating a workpiece from a sheet of material is provided. The method begins by defining a bending line on the sheet of material. A slot having an edge positioned at the bending line is then stamped into the sheet of material. The sheet is then bent along...

20060139796 - Disk drive with air flow control within enclosure: Turbulence of an airflow returning to a magnetic disk along the base sidewall of a HDD is reduced to thereby reduce flutter of an actuator or a magnetic disk caused by the airflow, thus improving read/write performance. An HDD according to an embodiment of the present invention comprises a base,...

20060139798 - Disk drive with airflow control: Embodiments of the invention suppress the occurrence of turbulence in a disk drive. In one embodiment, an HDD includes a spindle motor for rotating a magnetic disk, and a base for housing the spindle motor therein. The base includes a first bottom surface opposed to the magnetic disk, and a...

20060139797 - Filtered air separator for disk drive: Embodiments of the invention provide a disk drive capable of reducing vibrations of a disk generated by an airflow produced as the disk rotates. In one embodiment, a disk drive comprises: a rotary magnetic disk, a base for housing the magnetic disk, a top cover for closing the disk in...

20060139799 - Granular perpendicular magnetic recording media with dual recording layer and method of fabricating same: A granular perpendicular magnetic recording medium comprises a non-magnetic substrate and a granular perpendicular magnetic recording layer overlying the substrate, comprising a first granular perpendicular magnetic layer proximal the substrate and having a first saturation magnetization (Ms)1, and a second granular perpendicular magnetic layer distal the substrate and having a...

20060139800 - Disk drive device, disk drive apparatus with the same, and method of manufacturing disk driving device: A disk drive device has a substantially cylindrical hub supported rotatably by a pivot. A disk is fitted on the hub coaxially with a ring shaped spacer and a clamp member mounted on the end portion of the hub. The spacer has a contact portion which contacts with the disk,...

20060139801 - Perpendicular magnetic recording head including extended yoke layer: A perpendicular magnetic recording head capable of effectively inducing a recording magnetic field to a main magnetic pole front end portion and suppressing an occurrence of side fringing is provided. An auxiliary magnetic pole layer, which is a first magnetic portion, and a main magnetic pole layer, which is a...

20060139802 - Method of manufacturing magnetic head, and magnetic head sub-structure: A method of manufacturing magnetic heads comprises the step of: fabricating a magnetic head substructure by forming a plurality of components of the magnetic heads on a single substrate, wherein a plurality of rows of pre-head portions that will be the respective magnetic heads later are aligned in the substructure;...

20060139803 - Multilayer information medium, reproduction method and reproduction device thereof: During reproduction of a multilayer recording medium including three or more information layers, a light beam is irradiated onto a target information layer. A reflected light from the information layer is mainly detected to generate an information signal RF1, while reflected lights from the other information layers than the target...

20060139804 - Cartridge case: A cartridge case 1 for a magnetic tape cartridge comprises a cartridge case 1 consisting of a lower half 2 and an upper half 3. The lower half 2 is provided with retaining ribs 71 each having a retaining slanted surface 71a such that a plate-like cartridge memory 7 is...

20060139805 - Magnetic disk and magnetic disk apparatus provided with the same: A magnetic disk of a magnetic disk apparatus includes a flat disk-shaped substrate having a recording region formed on at least one of front and back surfaces and patterned depending on the presence of a magnetic material. The recording region includes a data recording region, an annular landing region formed...

20060139806 - Magnetic recording medium for high density recording and magnetic storage device using same: In one embodiment, a magnetic recording medium comprises an underlying film, a magnetic film and a protective film formed in this order on a substrate. The magnetic film is a cobalt-base alloy film containing chromium and has a plurality of magnetic layers stacked without interposition of any non-magnetic layer. The...

20060139807 - Magnetic disk protection mechanism, computer system comprising protection mechanism, protection method for magnetic disk, and program for protection method: A mechanical transport device includes a system for transport; and a hard disk drive attached to the system. The hard disk drive comprises a magnetic recording disk to record data, a head to read or write the data to or from the disk, and a drop sensor designed to sense...

20060139808 - Head slider and hard disk drive including the same: A head slider, and a hard disk drive having the head slider, the head slider including a slider body; a magnetic head provided on the slider body, the magnetic head including a writer to write data on a disk and a reader to read data written on the disk; and...

20060139809 - Head gimbal assembly and magnetic disk drive: Embodiments of the invention provide a head gimbal assembly (HGA) provided with a solder ball connecting structure suitable for the re-utilization of a suspension assembly. In one embodiment, the HGA includes lead wires provided at front ends thereof with lead pads and also includes slider pads capable of being connected...

20060139810 - Magnetic head slider and disk drive with reduced damage to recording medium: Embodiments of the invention reduce damage to a disk recording medium when a slider flying above the disk recording medium inside a magnetic disk drive comes into contact with the disk recording medium due to slider vibration. In one embodiment, a magnetic head slider includes a front pad, a rear...

20060139811 - Suspension and actuator with the same for use in hard disk drive: A suspension and an actuator with the same for a hard disk drive. A suspension includes a load beam having one end portion coupled to a swing arm and another end portion from which a dimple protrudes in a direction toward a disk, and a flexure having one end portion...

20060139812 - Magnetic disk drive with efficient layout of circuit elements: Embodiments of the invention provide an efficient layout of circuit elements on a circuit board. A hard disk drive (HDD) according to one embodiment of the present invention is provided with a circuit board. The circuit board has an IC of HDC, MPU, and R/W channel, an IC of MDU,...

20060139813 - Bearing mechanism for head used in magnetic disk drive and magnetic disk drive having the same: Embodiments of the invention provide a bearing mechanism for a head used in a magnetic disk drive capable of preventing scattering of dust and dirt at a high level and a magnetic disk drive having the same. In one embodiment, a base is provided with a bearing hole. An inner...

20060139814 - Patterned medium and recording head: A magnetic recording system includes a patterned medium comprised of land areas and trough areas, a write element which writes the data to the patterned medium, and a read element which reads the data from the patterned medium and servo information from the troughs. The land areas store data and...

20060139815 - Thin film magnetic head: Embodiments of the invention avoid loss of information as recorded, due to an external magnetic field applied. In one embodiment, a pole expanded part prone to occurrence of magnetic saturation is formed so as to prevent magnetic fluxes from being converged at ends of a return pole of a magnetic...

20060139816 - Magnetoresistive sensor with antiferromagnetic exchange-coupled structure formed by use of chemical-ordering enhancement layer: An antiferromagnetically exchange-coupled structure for use in a magnetic device, such as a magnetoresistive sensor, includes an enhancement layer formed of a chemically-ordered tetragonal-crystalline alloy, a chemically-ordered tetragonal-crystalline Mn-alloy antiferromagnetic layer in contact with the enhancement layer, and a ferromagnetic layer exchange-coupled with the antiferromagnetic layer. The enhancement layer is...

20060139817 - Cpp-type giant manetoresistance effect element and magnetic component and magnetic device using it: Disclosed is a CPP type giant magnetoresistance device (10, 20, 50) capable of exhibiting a giant magnetoresistance effect by spin dependent current in a direction perpendicular to a film plane as well as magnetic components and units using the device. The CPP type giant magnetoresistance device has a multi-layered structure...

20060139818 - Magnetic random access memory: An MTJ element of a magnetic random access memory according to an example of the present invention comprises a first ferromagnetic layer whose magnetization direction is fixed, and a second ferromagnetic layer whose magnetization direction changes in accordance with an applied magnetic field. The second ferromagnetic layer comprises a main...

20060132949 - Position error signal quality: In a method for generating a confidence level of a position error signal (PES) component that is indicative of a quality of the PES component, a PES component is generated using position signal samples of a read back signal corresponding to a servo burst pattern. Next, a noise level corresponding...

20060132950 - Method and apparatus for interpolating peak detection of servo stripe pulses: A method and device for detecting a peak which is substantially the same as the actual peak are disclosed. In one embodiment, the device includes a filter, a shift register, a controller and a digital interpolator. The filter is configured to receive a plurality of signal samples and the shift...

20060132951 - Magnetic read/write device preventing malfunction due to reversal in polarity: Embodiments of the invention provide a magnetic read/write device capable of reading/writing data even when a reversal of the output polarity of the readback signal occurs. In one embodiment, a magnetic read/write device is provided which constantly checks the output polarity based on the polarity of the waveform of a...

20060132954 - Alternate cylinder table to improve adjacent track interference problem: Embodiments of the invention prevent data loss due to very frequent writing onto adjacent data tracks. In one embodiment, an alternate zone made up of multiple adjacent data tracks is formed by setting data tracks whose usage is to be prohibited for every other data track. The data updated very...

20060132952 - Enhanced data storage and retrieval devices and systems and methods for utilizing same: The present invention relates generally to the storage and/or retrieval of information on magnetic storage media by using one or more novel approaches alone or in combination. These novel approaches are capable of using at least one code which may comprise more than two values (i.e., more than a “0”...

20060132953 - Magnetic recording medium, magnetic recording/reproducing apparatus, and stamper for manufacturing magnetic recording medium: A magnetic recording medium includes a servo area that has a preamble area where a magnetic portion and a non-magnetic portion for clock synchronization are formed; and a data area where user data is written into. The magnetic portion is different in an occupancy to the preamble area from the...

20060132955 - Synchronizing an asynchronously detected servo signal to synchronous servo demodulation: A first set of data is detected in a signal having synchronous samples and interpolated samples, wherein the first set of data is detected asynchronously as corresponding to one of the samples. A time to transmit a data-found signal is determined based on an offset between the data-detected sample and...

20060132956 - Disk writing/reproducing apparatus and method: A disk writing apparatus includes: a temperature sensor sensing an ambient temperature of a disk; a sync mark generator generating a sync mark having a pattern when a writing temperature indicating an ambient temperature at which data is written on the disk is sensed, wherein the pattern of the sync...

20060132957 - Magnetic disk apparatus having an adjustable mechanism to compensate write or heat element for off-tracking position with yaw angle: A magnetic disk apparatus including: a disk holding data as magnetic information on a magnetic recording film; a head to perform writing and reading of the magnetic information; a rotary actuator to move the head in a radial direction of the disk; plural heat elements in the head to locally...

20060132959 - Disk drive and method of controlling the same: Embodiments of the invention provide a disk drive capable of preventing the deterioration of performance. In one embodiment, a disk drive includes a disk medium; a head capable of performing a read/write operation for accessing the disk medium to read information from and to write information to the disk medium;...

20060132958 - Fault diagnosis apparatus, recording medium recording fault diagnosis program and fault diagnosis method: A fault diagnosis apparatus are installed and used in information equipment. The information equipment has a disk drive and a vibration source that causes vibrations or being subject to vibrations from an external vibration source. The apparatus has a measuring unit and a diagnosis unit. The measuring unit performs a...

20060132961 - Detection of fly height change in a disk drive using head drag: A method for detecting a change in fly-height comprises measuring motor currents at various radii at a regular interval to determine the head drag. If any of the head drags at the various radii are greater than a threshold value, it is determined that a decrease in fly-height has occurred....

20060132960 - Dual direction integrator for constant velocity control for an actuator using sampled back emf control: A controller providing increased control with lesser final error for an actuator when there is a force accelerating the actuator, such as at the end of travel during a retract operation. An extension of the integrator may be provided for implementing a second direction to integrate a final error. One...

20060132963 - Magnetic disk drive with control of sense current of magnetic head: An output of a magnetic head changes depending on the environmental temperature of a magnetic disk. In particular, under cold temperature conditions, an output of the head largely decreases mainly due to an increase in coercivity of a magnetic recording medium, which degrades an error rate. In one embodiment of...

20060132962 - Systems and methods for efficient writing of low-rro phase-burst servo patterns: The minor coherence-errors suffered during servowriting of bursts in a phase burst servo pattern may contribute to significant written-in runout of the resulting pattern. Embodiments of the present invention enables the servowriting of both the zig/zag bursts and/or the digital information of the phase burst pattern all in one single...

20060132964 - Power reduction scheme for use with a disc drive magazine: Disclosed is an apparatus for a data storage library comprising at least one of a plurality of docking stations adapted to receive a disc drive magazine wherein the magazine comprises a plurality of disc drives. The docking station is adapted to receive the disc drive magazine via a loading device...

20060132966 - Connection of circuit board with housing of disk drive: Oscillation of a spindle motor caused by a shock is to be suppressed. In one embodiment, an HDD according to an embodiment of the present invention comprises a base, a spindle motor for rotating a magnetic disk, the spindle motor being fixed to an inner surface of a base bottom,...

20060132965 - Mounting spindle shaft in magnetic disk drive: A magnetic disk drive has a problem in that when a shock in excess of a force used to fasten a spindle shaft to a cover is applied, the spindle shaft becomes inclined. Embodiments of the invention overcome this problem. In one embodiment, a cover is formed with a recessed...

20060132967 - Disk device with reduced flutter: Embodiments of the invention provide a disk device capable of diminishing oscillation of a disk caused by an air flow which is created with rotation of the disk. In one embodiment, a magnetic disk device comprises a rotatable magnetic disk, a base and a top cover for housing the magnetic...

20060132968 - Dynamical pressure bearing device, motor, and recording disc driving device: There is provided a dynamical pressure bearing device, a motor and a recording drive device. The dynamical pressure bearing device has a shaft having a first bearing surface and a first portion exteriorly adjacent to the first bearing surface; and a sleeve having a second bearing surface and a second...

20060132969 - Magnetic head and method of making the same using an etch-stop layer for removing portions of the capping layer: A magnetic head, comprising a read sensor formed in a central region, the read sensor including a free layer; an etch-stop layer formed over the free layer; and a capping layer formed over the free layer....

20060132971 - Magnetic recording head with compact yoke: A compact magnetic recording head is provided. The recording head includes a write pole and a substantially planar yoke, which is coupled to the write pole. The yoke is configured to support a substantially single vortex configuration of magnetization....

20060132970 - Magnetic recording/reproducing device, magnetic recording medium, and magnetic head: A perpendicular magnetic recording/reproducing device that can suppress broadening of recording magnetic fields and that is capable of effective application of magnetic field to a recording target track is provided. The device includes a magnetic recording medium having a soft magnetic layer and a recording layer having a perpendicular magnetic...

20060132973 - Magnetic heads and semiconductor devices and surface planarization processes for the fabrication thereof: A magnetic head according to one embodiment includes a pole piece made of a magnetic material; one or more magnetic pedestals formed over the pole piece; an insulator material formed over the pole piece adjacent the magnetic pedestals; and one or more polymer layers formed over tops of the insulator...

20060132972 - Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head: A thin-film magnetic head with which an error rate is decreased due to a reduction of a jitter without significant decrease in write field, is provided. The head comprises at least one inductive write head element comprising: a main magnetic pole layer having an inner saturation magnetic flux density varying...

20060132974 - Tape cartridge: A tape cartridge includes a case, a magnetic tape stored in the case, a movable member slidably or movably mounted on the case and having a display portion visible from an outside of the case, a plurality of management information sets about the tape cartridge are displayed on the display...

20060132975 - Humidity control in a removable data cartridge: Removable cartridges employ a labyrinth-type seal design which features multiple seals for a very effective barrier to outside contaminants. The sealing mechanism of the cartridge is specifically designed so moisture and other contaminants are blocked from entering the cartridge, resulting in high resistance to corrosion and guarding against the potentially...

20060132976 - Data recording disk and hard disk drive having the same: A data recording disk, and a hard disk drive provided with the data recording disk, the data recording disk including a clamping zone and a data zone, wherein at least a portion of a surface of the clamping zone varies in height from a surface of the data zone....

20060132977 - Magnetic head and head assembly: A magnetic head, a head assembly, and a magnetic disk apparatus that uses the same make it possible to separately adjust the float of a write core and a read core in a magnetic head, and so make it possible to record and reproduce information more precisely. In a head...

20060132978 - Slider for high density magnetic recording: An improved slider design is disclosed. The width of the slider is less than 0.7 mm. The slider may have a thickness of 0.18 mm and a length of 0.85 mm. The air-bearing surface of the slider may have a two-tiered U-shaped rail on the leading edge. A two-tiered main...

20060132979 - Head suspension and method of processing: A head suspension restricts deformation of a flexure caused by frictional force produced between a hard disk and a slider when the hard disk turns in a reverse direction. The head suspension has a load beam resiliently supported with a base. The base is supported with an arm that is...

20060132980 - Head parking ramp for hard disk drive: A head parking ramp for a hard disk drive (HDD). The head parking ramp is designed to park a read/write head off a disk of the HDD when the disk stops rotating. The head parking ramp includes a fixed part fixed to a base member, a support part having a...

20060132981 - Actuator of hard disk drive: An actuator of a hard disk drive (HDD). The actuator includes an actuator arm installed to be rotatably connected to a base plate of the HDD and having a pivot hole, a VCM (voice coil motor) coil connected to a rear portion of the actuator arm, upper and lower yokes...

20060132982 - Disk drive, and actuator and head actuator assembly: Embodiments of the invention improve the impact-resisting performance of a disk drive. In a head actuator assembly according to an embodiment of the invention, the difference in resonance frequency between an arm bending mode and a coil bending mode is set at a predetermined value or less. Since there is...

20060132983 - Magneto-resistive sensor with stopper layer and fabrication process: A high output magneto-resistive sensor is provided by suppressing leftover resist mask after lift-off and generation of a fence, and by making it easy to remove the redepositions deposited on the side wall in the track width direction or on the side wall in the sensor height direction of the...

20060132984 - Magnetic memory device having yoke layer on write interconnection and method of manufacturing the same: A magnetic memory device includes a magnetoresistance effect element, and a first write interconnection which is arranged under the magnetoresistance effect element and has a first interconnection layer and a first yoke layer, the first interconnection layer having a portion projecting toward the magnetoresistance effect element, and the first yoke...

20060132985 - Magnetic head with durability against static electricity: Embodiments of the invention provide a read head which is implemented in a magnetic disk drive that supports a high recording density and a high transfer rate and is excellent in static electricity durability. In one embodiment, a magnetic head wherein a charge diffuses from a read element to a...

20060132986 - Magnetoresistance device and method of fabrication using titanium nitride as capping layer: A magnetoresistance device using TiN as a capping layer and a method of fabricating the same. The fabrication of the magnetoresistance device may be simpler and the magentoresistance device may be more stable and/or more reliable....

20060132990 - Magnetic recording element, magnetic recording apparatus and recording method of information: A magnetic recording element includes a first fixed layer having a first and second face and having a magnetization direction fixed in a direction penetrating the first and second face. A free layer has a third and fourth face, a magnetization easy and hard axis both extending along the third...

20060132988 - Novel hard bias design for sensor applications: A hard bias structure for biasing a free layer in a MR element within a magnetic read head is comprised of a soft magnetic underlayer such as NiFe and a hard bias layer comprised of Co78.6Cr5.2Pt16.2 or Co65Cr15Pt20 that are rigidly exchange coupled to ensure a well aligned longitudinal biasing...

20060132989 - Novel hard bias design for sensor applications: A hard bias structure for biasing a free layer in a MR element within a magnetic read head is comprised of a soft magnetic underlayer such as NiFe and a hard bias layer comprised of Co78.6Cr5.2Pt16.2 or Co65Cr15Pt20 that are rigidly exchange coupled to ensure a well aligned longitudinal biasing...

20060132987 - Magnetic random access memory: The present invention provides a technique for reducing influences of the bias magnetic field developed by yokes used for concentrating the magnetic field on magnetoresistance elements, on MRAM operations. An MRAM according to the present invention is composed of a plurality of magnetoresistance elements having magnetic anisotropy in a first...

20060126201 - System and method for scalable data distribution: A system having a resource manager, a plurality of masters, and a plurality of slaves, interconnected by a communications network. To distribute data, a master determined that a destination slave of the plurality slaves requires data. The master then generates a list of slaves from which to transfer the data...

20060126202 - Method of magnetic transfer and stopping slave medium rotation: When magnetically transferring information represented by a pattern of magnetic layer formed on a master information carrier to a disc-like slave medium, an initial DC magnetic field is applied to the slave medium to initially magnetize the slave medium in one direction of concentric recording tracks and a transfer magnetic...

20060126204 - Manufacturing method for magnetic disk drive: Embodiments of the invention provide the manufacturing method for a magnetic disk drive that includes the process steps of detecting and processing in a simplified way the defective sectors causing a reading error at low operating environmental temperatures. In one embodiment, defective sectors are detected by read/write testing at high...

20060126203 - Servo information write method and apparatus: Embodiments of the invention provide a servo information write method that makes it possible to properly locate the last-written servo information even when old servo information is overwritten by new servo information. In one embodiment, a servo track writer controller, which is within a servo track writer, reads a serial...

20060126205 - Apparatus method and system for concurrent gain control in a magnetic read channel: An apparatus, system, and method are disclosed for controlling gain in a magnetic media read channel. In one embodiment, a sampling module provides an asynchronous digital stream corresponding to encoded signals on a streaming magnetic medium, a stream synchronization module converts the asynchronous digital stream to a synchronous digital stream,...

20060126206 - Method of writing servo data and magnetic disk drive: Servo data is stably written even if the flying height of a head/slider is varied. In one embodiment, a seamed pattern of servo data is written by a write head that is equipped in a head/slider. A variation pattern signal of the flying height in the circumferential direction of a...

20060126207 - Dual mode servo pattern: A servo pattern is described that facilitates high resolution and wide dynamic range to accurately pinpoint servo track centerlines on a magnetic tape. The servo pattern provides both absolute positioning information over an entire servo band and absolute positioning information relative to the centerline of each servo track included in...

20060126208 - Disk drive with improved format efficiency and control method thereof: Embodiments of the invention provide a magnetic disk drive and its control method capable of effectively using the unrecordable area which is caused due to the composite magnetic head's gap between the read head and the write head. In one embodiment, a disk drive comprises a composite magnetic head structured...

20060126209 - Variable media tape-based storage system: Disclosed is a method and apparatus for a variable media tape based storage system for storing, retrieving, and communicating data. The system includes at least one media element having a compatible relationship with one of a plurality of drives for storing and receiving data. The at least one media element...

20060126210 - Disk array system: A disk array system capable of efficiently cooling the canisters and achieving the high-density mounting of the canisters without reducing the number of canisters is provided. In the disk array system having a HDD box which stores a plurality of canisters, a canister on an upstream side of cooling air...

20060126211 - Method and apparatus for monitoring failure of memory device, and computer product: A memory data reader of a magnetic tape library device reads from a memory of a magnetic tape cartridge containing a magnetic tape, information pertaining to data read from or written to the magnetic tape by a magnetic tape drive device. A maintenance/replace determining unit determines whether the magnetic tape...

20060126212 - Dual actuators for read-while-write recording system: The invention provides a read-while-write recording system for a linear data storage medium, such as magnetic tape or other data storage medium in which data is stored on parallel data tracks that extend along a length of the medium. The invention makes use of separate sliders for the read and...

20060126213 - Magnetic disk drive with offset detection of composite magnetic head: Embodiments of the invention detect a head offset in a data region between servo regions in a data write operation. To detect a head offset even in a data region between servo regions, a magnetic disk drive according to an embodiment of the invention makes adjustments to maintain a fixed...

20060126214 - Compensator for a synchronous sampling time-base servo system: Disclosed are a system, a method, and article of manufacture to provide a compensator for a synchronous sampling servo control system....

20060126215 - Velocity adaptive compensator for a synchronous sampling time-based servo system: Disclosed are a system, a method, and article of manufacture to provide a velocity adaptive compensator for a synchronous sampling servo control system....

20060126216 - Annular shroud for a rotating disc: An enclosure is provided defining an annular shroud adapted for receivingly engaging a rotatable data storage media. A method is provided for managing fluid flow created by a moving data storage medium, the method comprising circumscribing an annular shroud adjacent to an edge of the medium. A data storage device...

20060126217 - Flexible printed circuit and bracket structure for hard disk drive: A flexible printed circuit and a bracket structure for the hard disk drive. The flexible printed circuit includes a base layer, a circuit layer provided on the base layer, a cover layer provided on the circuit layer, and a filter layer interposed between the base layer and the circuit layer....

20060126218 - System and method for improving airflow in a data storage system: An enclosure system for a mechanical device having an airflow which carries particles. The enclosure system includes a body configured to contain the airflow and a generally flat surface. The flat surface includes at least one three-dimensional feature. The enclosure system also includes a generally smooth cover configured to cover...

20060126219 - Magnetic disk drive with line contact: Embodiments of the invention provide a magnetic disk drive promoting even higher densities, greater capacities, and further reduction in size, while relaxing component accuracy requirements. In one embodiment, the magnetic disk drive includes a magnetic disk receiving member and a magnetic disk holding member, a magnetic disk being rotatably held...

20060126220 - Disk drive device: A recess (27) is formed in a hub flange surface (21) concentrically with a rotation center axis of a spindle hub (7). The hub flange surface (21) contacts a disk surface (20) at positions on opposite sides of the recess (27) in a radial direction of the disk....

20060126221 - Magnetic head having toroidal coil layer and manufacturing method thereof: First and second magnetic layers of a magnetic head face each other. A toroidal coil layer having upper and lower layer coil pieces (ULCP and LLCP) is wound around one of the magnetic layers. The ULCP extend from a first insulating layer by downward steps to a top of a...

20060126223 - Perpendicular magnetic recording head with return pass layer: A length in a height direction from each end of a front portion of a return-pass layer (first magnetic layer) may be shorter than a length in the height direction from a midpoint of the front portion. As a result, a recording magnetic field may not be concentrated on and...

20060126222 - Thin film magnetic head, method of manufacturing the same, and magnetic recording apparatus: The present invention provides a method of manufacturing a thin film magnetic head capable of assuring recording characteristics by determining throat height with high precision. A TH specifying layer is formed so as to extend to a position P1 while being adjacent to a gap layer, and an auxiliary insulating...

20060126224 - Thin-film magnetic head with heating means for adjusting magnetic spacing: A thin-film magnetic head that the protrusion of the head end surface due to heat generated from the heating means becomes large enough to set the magnetic spacing dMS to the smaller value efficiently is provided. The head comprises: a substrate having an element-formed surface on which at least one...

20060126225 - Tape cartridge: A tape cartridge includes a case, a magnetic tape stored in the case, and a write protect structure for blocking information recording onto the magnetic tape, in which the write protect structure includes, for example, a slidable write protect member and a retention member (e.g., a guide wall) capable of...

20060126226 - Head slider and disk drive employing same head slider, and method for providing water repellent treatment to same head slider: With a view to providing a head slider which can suppress the adhesion of dust particles to a flying surface of the head slider when the head slider flies and a disk drive employing the same head slider, a head slider in which at least an air bearing portion and...

20060126227 - Boss location to adjust head attitude: Embodiments of the present invention provide a structure of a pivot receiving surface which may excellently adjust the attitude of a head supporting mechanism in a magnetic disk drive. In one embodiment, three projections are formed at a base for supporting a pivot assembly. The first projection is formed on...

20060126228 - Magnetoresistive head and perpendicular magnetic recording-reproducing apparatus: A magnetoresistive head has a magnetoresistive film including first and second magnetization free layers, an intermediate layer-sandwiched between the first and second magnetization free layers, an underlayer and a protective layer, which are stacked in the order of the underlayer, the first magnetization free layer, the intermediate layer, the second...

20060126229 - Magnetic sensor: A magnetic sensor having at least a first and at least a second structure of soft-magnetic material that are spatially separated and define a first gap therebetween. The first and second structure of soft-magnetic material are adapted to form a gap magnetic field pointing in a direction substantially perpendicular to...

20060126230 - Magnetoresistance effect element, magnetic head and magnetic reproducing system: There is provided a magnetoresistance effect element capable of precisely defining the active region in a CPP type MR element and of effectively suppressing and eliminating the influence of a magnetic field due to current from an electrode, and a magnetic head and magnetic reproducing system using the same. The...

20060126231 - Composite free layer for cip gmr device: In this invention, we replace low resistivity NiFe with high-resistivity FeNi for the FL2 portion of a composite free layer in a CIP GMR sensor in order to minimize current shunting effects while still retaining both magnetic softness and low magnetostriction. A process for manufacturing the device is also described....

20060126232 - Ferromagnetic tunnel magnetoresistive devices and magnetic head: In a three-terminal ferromagnetic tunnel magnetoresistive element, a decrease in an output is suppressed by a bias voltage V1 applied to one of the tunnel junctions. By employing half-metallic ferromagnets 11 and 12 in the element, the output can be enhanced and the dependency on the applied bias voltage can...

20060114586 - Magnetic transfer apparatus: A magnetic transfer apparatus, comprising: a transferable magnetic field application device which, in a state in which a transferee disk whose magnetic layer has undergone initial magnetization in one direction of concentric tracks and a master disk having on the surface a patterned magnetic layer for transferring information to the...

20060114587 - Method for precompensation/write-current latching to improve error rate: A method is presented for writing data to a surface of a magnetic disk in a disk drive. The method includes determining a number of sector groups into which sectors of the data to be written will be grouped, loading registers with current values, kick-latching values, and precompensation values for...

20060114588 - Method for formatting data sectors on magnetic disk, and magnetic disk drive: Embodiments of the present invention efficiently format long sectors, without decreasing the performance, in a magnetic disk drive in which servo sectors are radially formed at regular intervals, and make full use of the ECC performance that is enhanced by the long sectors. In one embodiment, a data format in...

20060114589 - Magnetic recording disk drive with data written and read as cross-track magnetizations: A magnetic recording disk drive has a disk with the magnetizations in the concentric data tracks oriented in the cross-track direction. The concentric data tracks are magnetically separated from each other by guard bands. An inductive write head has its write poles and write gap oriented to generate magnetic fields...

20060114591 - Magnetic recording method: A magnetic recording method is provided for a magnetic recording medium including a magnetic recording layer. In accordance with the method, a recording magnetic field is applied to a local region in the recording layer to form a recording mark in the recording layer. Then, another recording magnetic field is...

20060114590 - Thermally assisted magnetic recording method: A thermally assisted magnetic recording method is implemented for a storage disk with a magnetic recording layer which includes recording areas and non-recording areas. In this method, a heating laser is moved relative to the disk in facing relation to the magnetic recording layer for locally heating the recording areas....

20060114592 - Data storage apparatus and method: Data storage apparatus is provided for storing data on a tape in accordance with a format specifying a plurality of logs of tape-usage information and a data area for storing the said data. Control means are programmed to update one of the said logs for each usage of the tape,...

20060114593 - Level detector: The present invention concerns a level detector (1) for a domestic or industrial water softener in which the said detector (1) comprises a sensor (2) which is equipped to detect the salt level in the brine tank (3) of the water softener. As a result, the salt level is watched...

20060114594 - Electronic device comprising recording and reproducing unit: A structure is provided such that: an opening portion 7 is formed at a bottom face side of a chassis 4; a bottom plate 3 which covers the opening portion 7 is mounted on a hard disk unit 8 in which a hard disk drive 10 and a control board...

20060114597 - Method of compensating for track zero position in reference servo track copying system and disc drive using the same: A method and apparatus for exactly compensating for a track zero position when copying a reference servo pattern in a disc drive adopting a reference servo track copying method. The method of compensating for a track zero position in a reference servo track copy system for copying a reference servo...

20060114595 - Slider loading mechanism: The present invention relates to a flexible slider-loading mechanism for an optical drive with interchangeable optical storage media. A slider-loading mechanism according to the invention for an optical drive, having a slider which is fastened on a resilient arm and is lowered onto the surface of an optical storage medium...

20060114596 - Tri-state servowriter driver with slow return to zero: A method and apparatus for writing timing-based magnetic servo band patterns on magnetic storage media. The apparatus includes a magnetic head and a tri-state driver. The driver is adapted to control three magnetic head states including two writes states having positive and negative current outputs, respectively, for performing a write...

20060114598 - Method and apparatus for estimating micro-actuator stroke sensitivity in a hard disk drive: Method of estimating the stroke sensitivity of micro-actuator coupled with slider and its read-write head. Micro-actuator stimulus signal used to drive micro-actuator, inducing noise into lateral positioning of read-write head near track by voice coil motor to create PES. Lateral position noise derived from Position Error Signal. Stroke sensitivity estimated...

20060114599 - Method and apparatus for servo information writing in a disk drive: There is disclosed a servo information writing method of writing servo information for use in head positioning control on a disk medium incorporated in a disk drive. The present method executes a procedure having a step of executing the head positioning control based on original servo information recorded on the...

20060114600 - Adaptive settling control method and apparatus in track seek mode of disc drive: A settling control method and apparatus perform an improved settling control regardless of a seek distance when a disc drive track seek control operation is performed. An adaptive settling control method used in controlling the track seek mode of the disc drive includes: controlling a head to converge into a...

20060114602 - Non-repeatable run out compensating apparatus and method and disc drive using the same: An apparatus and method are provided for quickly and finely compensating for non-repeatable run out (NPRO) of a disc drive. The NPRO compensation control apparatus in a run out compensation apparatus of a system includes: a frequency estimator directly estimating a trigonometric function value of an NRRO frequency from a...

20060114601 - Seek trajectory generation using adaptive filtering: Embodiments of the present invention provide a method and a system for generating optimal feedforward signal for the seek control to suppress the RTV (Random Transient Vibrations) and the seek acoustic noise. One aspect is directed to a method of providing a revised feedforward signal using an adaptive filter in...

20060114603 - Method and apparatus to control airflow in hard disk drives: A method for reducing air turbulence in a hard disk drive system is provided. The method begins by providing a hard disk drive having a spindle motor to spin a hard disk. When the drive is in operation, the spinning hard disk generates unwanted airflow, which may destabilize a read/write...

20060114604 - Electronic device comprising recording and reproducing unit: An electronic device comprising a recording and reproducing unit is provided to further comprise a chassis, wherein a guide protrusion 14 for receiving and supporting one side end of a circuit board 20 is provided on a rise face 12 of a side end of a chassis 10; a protrusion...

20060114605 - Disk drive write head for writing cross-track magnetizations: An inductive write head has its write poles and write gap oriented to generate magnetic fields in the cross-track direction on a magnetic recording disk in a disk drive. The disk has the magnetizations in the concentric data tracks oriented in the cross-track direction with the concentric data tracks magnetically...

20060114606 - Information recording apparatus and information recording method: Magnetic recording is performed by a magnetic field lower than a coercive force without considerably changing the structure of a magnetic head and the vicinity thereof. When recording is performed by applying a magnetic field to a magnetic recording layer of a recording medium using a magnetic head, the electric...

20060114607 - Electrical connection structure for magnetic heads and method of making the same: An electrical connection structure suitable for use in a magnetic head and disk drive, as well as a method of making the same, are disclosed. An electrically conductive etch stop layer is formed over a first electrically conductive layer. An electrically conductive diffusion barrier layer is then formed over the...

20060114608 - Thin-film magnetic head and magnetic storage apparatus using the same: To accurately decrease the gap depth between an upper pole layer and a lower pole layer and the front-end portion width of the upper pole layer. A thin-film magnetic head of the present invention is constituted by forming a lower shielding layer, a read gap layer holding an MR magnetosensitive...

20060114609 - Tape recording head promoting lateral motion: A tape recording head/apparatus has cable connection pads aligned along a direction that run substantially perpendicular to a head actuation direction, which urges a ribbon-type external cable to be bent in its most flexible direction when the head module moves....

20060114610 - Conductive stud for magnetic recording devices and method of making the same: A magnetic recording device makes use of an “anchored” conductive stud which is securely attached within its surrounding insulator materials. The conductive stud is formed over a conductive layer which is coupled to or part of a read or a write head element of the magnetic recording device. The conductive...

20060114611 - Slider having features for reduced slider-media impact: One aspect of the present invention relates to a slider having a slider body. The slider body includes a bearing surface defining a bearing surface plane, a leading edge, a trailing edge, first side edge, a second side edge and at least one corner. A corner feature is positioned proximate...

20060114612 - Compact magnetic head slider with reduced bearing surfaces: A compact slider has a reduced area of bearing surfaces, thus remarkably decreasing a lifting force obtained by an air bearing characteristic. In one embodiment, a shallowly grooved surface is disposed on an inflow side of a bearing surface of a slider, and a pair of inflow side air bearing...

20060114613 - Actuator latch apparatus for data storage device: An actuator latch apparatus for a data storage device includes a latch lever installed on a base plate of the data storage device capable of pivoting and having a first latch portion provided at one end portion of the latch lever, a spring connected to the other end portion of...

20060114614 - Arm chamfer for comb type actuator in rotating disk storage device and carriage assembly: A carriage assembly capable of suppressing flutter of actuator arms and magnetic disk is to be provided. In one embodiment, the carriage assembly comprises a first actuator arm having a windward side face, a leeward side face, an outer surface and an inner surface, and a second actuator arm having...

20060114615 - Current perpendicular to plane (cpp) magnetoresistive sensor having a highly conductive lead structure: A current perpendicular to plane (CPP) sensor having a sensor stack lead layer that is resistant to corrosion. The sensor includes a sensor stack having a capping layer at its top. A lead layer constructed of a non-corroding material such as Ru, Rh, Au or some similar material is formed...

20060114617 - Disk drive read head for reading cross-track magnetizations: A magnetoresistive read head is capable of reading cross-track magnetizations in a magnetic recording disk drive that has the magnetized regions or magnetizations in the magnetic recording layer of the disk oriented in the cross-track direction. The magnetic recording disk has the magnetizations in the concentric data tracks oriented in...

20060114616 - Film and method for producing nano-particles for magnetoresistive device: A method of generating a thin film for use in a spin valve of a magnetoresistive (MR) sensor having a nano-constricted spacer is provided. The bottom portion of the spin valve is deposited up to the pinned layer, a deposition chamber is provided, and the spacer layer is sputtered thereon....

20060114618 - Storage element and memory: A storage element 3 has an arrangement in which magnetization fixed layers 31 and 32 are provided above and below a storage layer 17 for storing information based on the magnetization state of a magnetic material through intermediate layers 16 and 18, directions of magnetizations M15 and M19 of ferromagnetic...

20060114619 - Exchange biased magnetic head having confined current path: An in-stack bias is provided for stabilizing the free layer of a ballistic magneto resistive (BMR) sensor. In-stack bias includes a decoupling layer that is a spacer between the free layer and a ferromagnetic stabilizer layer of the in-stack bias, and an anti-ferromagnetic layer positioned above the ferromagnetic layer. The...

20060114620 - Granular type free layer and magnetic head: A reader of a magnetoresistive head includes a granular type free layer. The magnetoresistive head is for a current-perpendicular to plane type, and can be used in either a giant magnetoresistance (GMR) or ballistic magnetoresistance (BMR) scheme. The granular type free layer includes an insulating matrix, for example but not...

20060114622 - Hard bias structure with enhanced hc: A magnetic head having a sensor with a free layer, the free layer having a magnetic moment. Hard bias layers are positioned towards opposite track edges of the sensor, the bias layers stabilizing the magnetic moment of the free layer. An antiparallel (AP) pinned layer structure is positioned toward each...

20060114621 - Structure and process for composite free layer in cpp gmr device: The conventional free layer in a CPP GMR read head has been replaced by a tri-layer laminate comprising Co rich CoFe, moderately Fe rich NiFe, and heavily Fe rich NiFe. The result is an improved device that has a higher MR ratio than prior art devices, while still maintaining free...