| Patent Number |
Title Of Patent |
Date Issued |
| RE40726 |
Patterned magnetic recording media with discrete magnetic regions separated by regions of antife |
June 9, 2009 |
| A magnetic recording disk is patterned into discrete magnetic and nonmagnetic regions with the magnetic regions serving as the magnetic recording data bits. The magnetic recording layer comprises two ferromagnetic films separated by a nonferromagnetic spacer film. The spacer film mat |
| RE39001 |
Laser cutting method for forming magnetic recording head sliders |
March 7, 2006 |
| A method for cutting a ceramic wafer to form individual sliders for use in supporting the read/write heads in magnetic recording disk drives uses multiple parallel scans of a pulsed laser to ablate the ceramic material. After the wafer has been cut into individual rows, a pulsed laser be |
| D543206 |
Housing for a storage device |
May 22, 2007 |
|
| D530343 |
Housing for a storage device |
October 17, 2006 |
|
| D530341 |
Housing for a storage device |
October 17, 2006 |
|
| 7620740 |
Storage devices and method of transferring file between the devices |
November 17, 2009 |
| A file is transferred directly between a parent magnetic-disk device and a child magnetic-disk device. In one embodiment, a parent magnetic-disk device has a host-mode execution program, whereas a child magnetic-disk device is capable operating in a device mode as is the case with an |
| 7619857 |
Silicon-made magnetic head slider and method of producing the same |
November 17, 2009 |
| Embodiments of the invention provide a magnetic disk device which lowers the cost, maintains reliability by compensating the thermal dent or protuberance caused by a change in the environmental temperature, makes it possible to increase the recording density by decreasing the floating |
| 7619856 |
Head gimbal assembly provided with solder ball connecting structure allowing re-utilization of s |
November 17, 2009 |
| 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 slid |
| 7619853 |
Magnetic disk drive with mechanism for fixing flexible printed circuit assembly |
November 17, 2009 |
| A magnetic disk drive is provided which can attain the reduction in size and thickness without deteriorating the sealing performance for a space defined by a base and a cover. In one embodiment, a cover member is fixed to a base member with fixing screws. An FPC assembly is formed with l |
| 7619849 |
Magnetic disk drive with controlled transducer movement during a seek |
November 17, 2009 |
| Embodiments in accordance with the present invention provide a magnetic disk drive with reduced noise during seek operation without causing any delay in control response. According to one embodiment of the present invention, a control circuit of a magnetic disk drive controls the drive |
| 7619843 |
Write through drivers for disk drive systems |
November 17, 2009 |
| Circuits and methods are provided for write through drivers in disk drive systems. A write through driver is a transceiver that includes a write driver circuit and a receiver circuit. The write driver drives a current signal to a write element through a first conductive interconnect. The |
| 7619339 |
Fluid dynamic bearing assembly for directing bubbles |
November 17, 2009 |
| The present invention pertains to a fluid dynamic bearing assembly for directing bubbles. The assembly includes a stator with a stator bearing surface. A rotor with a rotor bearing surface rotates with respect to the stator such that the rotor bearing surface opposes the stator bearing |
| 7618722 |
Perpendicular magnetic recording media and magnetic storage apparatus using the same |
November 17, 2009 |
| Embodiments of the invention provide a perpendicular magnetic recording medium that not only attains the magnetic isolation of crystal grains in a magnetic recording layer from one another in a region of the medium in which the thickness of an intermediate layer is equal to or smaller th |
| 7617769 |
System, method, and apparatus for membrane, pad, and stamper architecture for uniform base layer |
November 17, 2009 |
| A nanoimprinting system incorporates a patterned media contact architecture to provide a uniform imprinting pressure across the target imprinting area on a disk substrate. The system leverages the unique disk substrate characteristic of an inner diameter hole by incorporating a membr |
| 7616411 |
Current perpendicular to plane (CPP) magnetoresistive sensor having a flux guide structure and s |
November 10, 2009 |
| A current perpendicular to plane (CPP) magnetoresistive sensor having a front edge that is recessed from the air bearing surface (ABS). The sensor includes a pinned layer structure a free layer structure and a spacer layer sandwiched between the free layer and the pinned layer. The f |
| 7616409 |
Magnetic sensor having a Ru/Si based seedlayer providing improved free layer biasing |
November 10, 2009 |
| A magnetoresistive sensor having a novel seed layer that allows a bias layer formed there over to have exceptional hard magnetic properties when deposited over a crystalline structure such as an AFM layer in a partial mill sensor design. The seed layer structure includes alternating laye |
| 7616403 |
Winged design for reducing corner stray magnetic fields |
November 10, 2009 |
| Embodiments of the present invention are directed to structures of a recording head having a winged design for reducing corner stray magnetic fields. In one embodiment, the present invention comprises a magnetic recording head comprising a plurality of components. In embodiments of t |
| 7616398 |
Fly height adjustment device calibration |
November 10, 2009 |
| A method for calibrating a fly height adjustment device comprises flying a magnetic transducer coupled with a head gimbal assembly at a fly height from a magnetic recording data track. The magnetic transducer is coupled with a fly height adjustment device. Read-back signal amplitude is r |
| 7616397 |
Disk drive and disk drive control method |
November 10, 2009 |
| Embodiments in accordance with the present invention improve the head characteristic and avoid collisions between a head element section and a recording disk. A hard disk drive according to an embodiment of the present invention performs TFC (Thermal Fly height Control) to adjust the |
| 7615771 |
Memory array having memory cells formed from metallic material |
November 10, 2009 |
| Solid-state memories are disclosed that are comprised of cross-point memory arrays. The cross-point memory arrays include a first plurality of electrically conductive lines and a second plurality of electrically conductive lines that cross over the first plurality of electrically con |
| 7614137 |
Method of manufacturing a magnetic slider head |
November 10, 2009 |
| Embodiments of the invention relate to manufacturing method of a magnetic head slider which flies stably even with a reduced peripheral speed resulting from a trend toward a magnetic disk having a smaller diameter. According to one embodiment, a method of manufacturing a magnetic head |
| 7613525 |
Disk device for serial communication and method of controlling the same |
November 3, 2009 |
| Embodiments of the invention provide a disk device and a method of controlling the device which is capable of suppressing peak current, even for serial communication, that is required when initiating rotation of a spindle motor down to a level equivalent to that of parallel communica |
| 7612970 |
Magnetoresistive sensor with a free layer stabilized by direct coupling to in stack antiferromag |
November 3, 2009 |
| A magnetoresistive sensor having a free layer biased by an in stack bias layer that comprises a layer of antiferromagnetic material. The bias layer can be IrMnCr, IrMn or some other antiferromagnetic material. The free layer is a synthetic free layer having first and second magnetic |
| 7612964 |
Magnetic write head having a self aligned, steep shoulder pole structure and method of manufactu |
November 3, 2009 |
| A magnetic write head and method of manufacture thereof that has a first pole structure having a notched structure configured with a steep shoulder portion and a narrow vertical notch portion extending from the top of the steep shoulder portion. The write head also includes a second |
| 7612963 |
Perpendicular magnetic recording head with photoresist dam between write coil and air bearing su |
November 3, 2009 |
| A magnetic recording head for use in perpendicular magnetic recording having a design that allows the write coil to be manufactured by a damascene process for increased coil pitch and reduced coil resistance. The magnetic write head includes a photoresist dam structure that allows a |
| 7612961 |
Magnetic recording disk and disk drive with patterned phase-type servo fields for read/write hea |
November 3, 2009 |
| A magnetic recording disk drive uses a disk having pre-patterned servo sectors extending generally radially across the data tracks. The servo sectors include at least two position error signal (PES) bursts or fields. The phases of the PES fields in the servo readback signal are demod |
| 7612960 |
Method for formatting data sectors on magnetic disk, and magnetic disk drive |
November 3, 2009 |
| 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 em |
| 7609485 |
Head gimbal assembly and head stack assembly having accurate dimensions |
October 27, 2009 |
| Embodiments of the invention provide a head gimbal assembly and a head stack assembly suitable for a miniature magnetic disk drive, and capable of being assembled in an accurate alignment during its fabrication. In one embodiment, a fixing member is disposed in contact with a pivot, an |
| 7609483 |
Data storage device with load/unload tab inclined towards a disk |
October 27, 2009 |
| Embodiments of the invention reduce the height of a ramp to provide a thin data storage device that is capable of inhibiting the deterioration of the dynamic characteristics at the time of loading/unloading. In one embodiment, a data storage device includes a head that accesses a rec |
| 7609476 |
Magnetic disk drive with isolation wall |
October 27, 2009 |
| Embodiments of the invention provide a magnetic disk drive whose flexibility in the layout of components is enhanced in spite of the fact that a magnetic disk and a driving section such as the voice coil motor that drives a head arm are isolated from each other. In one embodiment, a |
| 7609473 |
Dissipation of liquid droplets in a magnetic disk drive |
October 27, 2009 |
| Magnetic disk drives and associated methods are described for an improved process for dissipating liquid droplets that may accumulate on a slider of the magnetic disk drive. For the droplet removal process, the slider having the liquid droplet is unloaded from the magnetic disk. For |
| 7607214 |
Method of manufacturing a silicon slider by an alkaline etch |
October 27, 2009 |
| A slider for use in a magnetic data recording system that is constructed from a Si wafer by a method that saves valuable wafer real estate by minimizing kerf related to the cutting of the wafer into slider rows. The sliders are produced from a (110) oriented Si wafer, and the sliders are |
| 7607039 |
Data storage device with re-allocation processing which determines an order in which re-allocati |
October 20, 2009 |
| Embodiments of the invention improve the security of data written on a magnetic disk by performing re-allocation processing starting from a sector whose defect is large in automatic re-allocation processing. According to one embodiment of the present invention, after the reliability |
| 7606948 |
System and method for generating warranty and pricing information for data storage apparatus |
October 20, 2009 |
| Embodiments of the present invention provide a system and a method for generating warranty and pricing information for one or more data storage apparatuses. In one embodiment, a system for processing status parameters of one or more data storage apparatuses comprises at least one host |
| 7606065 |
Three-dimensional magnetic memory having bits transferrable between storage layers |
October 20, 2009 |
| Magnetic memories and methods are disclosed. A magnetic memory as described herein includes a plurality of stacked data storage layers to form a three-dimensional magnetic memory. Bits may be written to a data storage layer in the form of magnetic domains. The bits can then be transf |
| 7606009 |
Read sensor stabilized by bidirectional anisotropy |
October 20, 2009 |
| A read sensor stabilized by bidirectional anisotropy is disclosed. The read sensor includes a longitudinal flux-closure structure comprising an antiferromagnetic pinning layer, a ferromagnetic bias layer, a nonmagnetic spacer layer, and a ferromagnetic sense layer. In this longitudin |
| 7606007 |
Shield stabilization for magnetoresistive sensors |
October 20, 2009 |
| Apparatus and method for providing a magnetic head that includes a magnetoresistive read sensor disposed between first and second magnetic shields. The shields are configured to reduce protrusion of the shields from a polished flat air bearing surface of the magnetic head upon increa |
| 7606006 |
Magnetic recording head and magnetic disk storage apparatus mounting the magnetic head |
October 20, 2009 |
| Embodiments of the invention provide a write head for perpendicular recording in which the magnetic field intensity applied at a read element is reduced with larger write-field gradients and the distance between a write element and a read element is small. In one embodiment, a pair of |
| 7606004 |
Rotating disk storage device with actuator lock mechanism |
October 20, 2009 |
| Embodiments of the invention permit a magnet-based actuator lock mechanism to operate smoothly in a magnetic disk drive that uses a base made of a magnetic material. In one embodiment, the base to be used is made of a magnetic material. The actuator lock mechanism includes a rotatable ar |
| 7605996 |
Method and system for detecting a change in a rotational velocity of a magnetic disk or a spindl |
October 20, 2009 |
| A method according to one embodiment comprises detecting a change in a rotational velocity of a magnetic disk or a spindle coupled to the magnetic disk, the change being caused by head-disk contact. A method for detecting head-disk contact according to another embodiment comprises me |
| 7605993 |
Write current boosted head amplifier |
October 20, 2009 |
| Embodiments in accordance with the present invention provide a disk drive and a control method in the disk drive which can obtain good recording performance by amplifying the write current according to the recording method and the recording frequency. A HDD in accordance with an embo |
| 7605006 |
Method of manufacturing a magnetic head |
October 20, 2009 |
| In forming a narrow pattern, it is difficult to form a lift-off resist pattern with an overhang shape. Accordingly, it results in a phenomenon in which the angle at the end of the GMR layer is reduced to 45.degree. or less. It is necessary to provide a lift-off resist pattern that forms |
| 7604836 |
Release layer and resist material for master tool and stamper tool |
October 20, 2009 |
| Methods of performing nanoimprint lithography are described. For one method, a master tool and a stamper tool are formed to provide nanometer-scale imprinting. A release layer comprised of a perfluoropolyether diacrylate material is formed on the master tool and the stamper tool. The |
| 7603762 |
Optical lapping guide for use in the manufacture of perpendicular magnetic write heads |
October 20, 2009 |
| An optical lapping guide for determining an amount of lapping performed on a row of sliders in a process for manufacturing sliders for magnetic data recording. The optical lapping guide is constructed with a front edge that is at an angle with respect to an air bearing surface plane ABS |
| 7602589 |
Magnetoresistive sensor having shape enhanced pinning and low lead resistance |
October 13, 2009 |
| A magnetoresistive sensor having a pinned layer that extends beyond the free layer in the stripe height direction for improved shape enhanced pinning. The sensor includes hard bias layers and leads that extend in the stripe height direction beyond the stripe height of the free layer, |
| 7602581 |
Interpolated just-in-time seek trajectories |
October 13, 2009 |
| Methods and apparatus of the present invention allow for interpolated Just in Time (iJIT) seek command control of hard drive actuators. |
| 7601026 |
Card-through-connector fastener for reducing connector distortion |
October 13, 2009 |
| A card-through-connector fastener for reducing connector distortion is disclosed. One embodiment provides circuit card coupled with electronics associated with an actuator. A connector assembly is also coupled with the circuit card, the connector assembly for conveying data with respect |
| 7599157 |
Current-perpendicular-to-the-plane (CPP) magnetoresistive sensor with high-resistivity amorphous |
October 6, 2009 |
| A current-perpendicular-to-the-plane spin-valve (CPP-SV) magnetoresistive sensor has a high-resistivity amorphous ferromagnetic alloy in the free layer and/or the pinned layer. The sensor may have an antiparallel (AP)-pinned structure, in which case the AP2 layer may be formed of the |
| 7599153 |
Method and apparatus providing a stabilized top shield in read head for magnetic recording |
October 6, 2009 |
| A method and apparatus providing a stabilized top shield in a read head used for the longitudinal or perpendicular magnetic recording is disclosed. The top shield includes a laminate structure including at least three layers of ferromagnetic and antiferromagnetic films in a frame. Un |
| 7599151 |
Magnetic head with laminated side shields |
October 6, 2009 |
| Embodiments of the invention provide a magnetic recording and read head which reduces the spread read width in a narrow track having a width of 100 nm or less and shows stable read operation. In one embodiment, a side magnetic shield has a multi-layered structure including non-magnetic |
