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Disk Drive patents



      

This page is updated frequently with new Disk Drive-related patent applications.




Date/App# patent app List of recent Disk Drive-related patents
04/07/16
20160099631 
 Spindle motor and hard disk drive including the same patent thumbnailSpindle motor and hard disk drive including the same
A spindle motor includes a stator including a sleeve, and a rotor forming a bearing clearance with the sleeve, the bearing clearance being filled with a lubricating fluid. The rotor includes a stopper member forming a sealing part with the sleeve, in which a liquid-vapor interface is formed, and at least one of the stopper member and a surface of the sleeve disposed to face the stopper member is provided with an impact alleviating part formed therein to alleviate external impacts..
Samsung Electro-mechanics Co., Ltd.


03/31/16
20160093792 
 Thin-film piezoelectric material element,  manufacturing the same, head gimbal assembly, hard disk drive, ink jet head, variable focus lens and sensor patent thumbnailThin-film piezoelectric material element, manufacturing the same, head gimbal assembly, hard disk drive, ink jet head, variable focus lens and sensor
A thin-film piezoelectric material element includes a lower electrode film, a piezoelectric material film, and an upper electrode film, the lower electrode film, the piezoelectric material film and the upper electrode film are laminated sequentially. An upper surface of the piezoelectric material film is a concavity and convexity surface having a convex part and a concave part, the convex part is a curved surface convexly projected, and the concave part is a curved surface concavely hollowed, the upper electrode film is formed on the concavity and convexity surface.
Sae Magnetics (h.k.) Ltd.


03/31/16
20160092555 
 Data aging in hana using grading attributes patent thumbnailData aging in hana using grading attributes
According to an embodiment of the present disclosures, systems, methods, and non-transitory computer-readable mediums having program instructions thereon, provide for process of segregating data from database tables into different layers depending on the frequency of access to the data—so that each layer of the data can be stored in an appropriate storage mechanism. For example, infrequently-accessed data can be stored in a hard disk drive (hdd) and frequently-accessed can be stored in random-access memory (ram).

03/24/16
20160086625 
 Circuit connection pad design for improved electrical robustness using conductive epoxy patent thumbnailCircuit connection pad design for improved electrical robustness using conductive epoxy
Disk drives including head suspensions within dual stage actuation systems have improved electrical connectivity between electrical connection pads from flexible circuits as are applied to head suspension assemblies with piezoelectric microactuators as also provided to head suspension assemblies. A more robust electrical connection provides for better control of microactuator actuation for fine movements and positioning of magnetic read/write heads relative to disk data tracks as part of dual stage actuated suspension systems.
Seagate Technology Llc


03/24/16
20160085649 
 Disk drive repair patent thumbnailDisk drive repair
According to an example, to repair a disk drive error, a determination is made if a disk field-repair is possible, if an operating system recovery image is available, and if any failed sectors exist in the operating system recovery image. A user is prompted to begin a repair.
Hewlett-packard Development Company, L.p.


03/24/16
20160085457 
 Write reordering in a hybrid disk drive patent thumbnailWrite reordering in a hybrid disk drive
A hybrid drive and associated methods increase the rate at which data are transferred to a nonvolatile storage medium in the hybrid drive. By using a large nonvolatile solid state memory device as cache memory for a magnetic disk drive, a very large number of write commands can be cached and subsequently reordered and executed in an efficient manner.
Kabushiki Kaisha Toshiba


03/17/16
20160078896 
 Spindle motor and hard disk drive including the same patent thumbnailSpindle motor and hard disk drive including the same
A spindle motor includes a stator, and a rotor forming a bearing clearance with the stator. The rotor is provided with an insertion groove formed therein into which a portion of the stator is inserted, and first and second sealing parts having liquid-vapor interfaces formed therein, respectively, are formed inside and outside the insertion groove, respectively.
Samsung Electro-mechanics Co., Ltd.


03/17/16
20160078895 
 Spindle motor and hard disk drive including the same patent thumbnailSpindle motor and hard disk drive including the same
A spindle motor includes a stator, and a rotor forming a bearing clearance filled with a lubricating fluid, together with the stator. At least one of the rotor and the stator is provided with a circulation hole through which air bubbles contained in the lubricating fluid are discharged, and a portion of the bearing clearance connected to one end portion of the circulation hole and disposed at an outer side of the circulation hole in a radial direction has a width allowing an amount of force applied to the other side of the air bubble to be less than that of force applied to one side of the air bubble when one side of the air bubble is disposed in the circulation hole and the other side thereof is disposed in the portion of the bearing clearance connected to the circulation hole..
Samsung Electro-mechanics Co., Ltd.


03/17/16
20160078054 
 File system extension system and method patent thumbnailFile system extension system and method
A file system extension (fse) system and method that permits an on-disk-structure (ods) incorporating spatially diverse data (sdd) to be stored on a daisy-chain of multiple sata disk drive storage elements (dse) that are coupled together with one or more pass-thru disk drive controllers (ptddc) is disclosed. The ptddc chain appears as a single logical disk drive to a host computer system (hcs) via a host bus adapter (hba) or pass-thru input (pti) port.

03/10/16
20160073546 
 Server chassis with different width front end module patent thumbnailServer chassis with different width front end module
Embodiments generally relate to a optimizing the design of a chassis, such that the chassis features a different width front end hard disk drive module. Key components of the design include chassis flexibility for different hard drive quantities, and sliding rails which can be installed for sliding the chassis in and out of the rack, taking into account the housing contours of both the chassis and the front end hard disk drive module of different width.
Quanta Computer Inc.


03/10/16
20160073164 

Server-based program recording scheduling


A dvr sends, over the internet, to a server, information that indicates a set of programs. The information also may indicate a ranking of the programs in the set relative to each other.
Tivo Inc.


03/10/16
20160071533 

Interleave circuit of conductive circuit portion of disk drive flexure


An interleave circuit includes a metal base, an insulating layer, a first conductor member having first branch conductors, a second conductor member having second branch conductors, and a jumper conductor, which is a part of the metal base. The jumper conductor includes a branch-side metal portion, a pad-side metal portion, and a bridge portion.
Nhk Spring Co., Ltd.


03/10/16
20160070500 

System, method, and computer program product for detecting access to a memory device


Discrete events that take place with respect to a hard disk drive or other i/o device or port are indicated to logic that implements self-monitoring analysis and reporting technology (smart) or similar technology. These events are communicated to smart as event data.
Stroz Friedberg, Inc.


03/10/16
20160070317 

Mounting system for hard disk drive


A mounting system includes a case, a holding plate, and two resilient members. The case includes a bottom plate and two side plates extending from the bottom plate.
Hon Hai Precision Industry Co., Ltd.


03/03/16
20160059368 

Method and forming a hard disk drive base plate with an extended height


A method for forming a hard disk drive base plate with an extended height is described. The method may include forming an initial hard disk drive base plate, forming a filler shim, and forming a shroud.
Cheung Woh Technologies Ltd.


02/25/16
20160056675 

Brushless motor and disk drive apparatus


A brushless motor includes a stationary unit and a rotary unit rotatably supported with respect to the stationary unit. The stationary unit includes an armature and a base member arranged to support the armature.
Nidec Corporation


02/25/16
20160055340 

Location based disk drive access


Methods, apparatuses, systems, and devices are described for providing data security. In one method, data security is provided for a computing device having a data storage drive.
Seagate Technology Llc


02/18/16
20160048342 

Reducing read/write overhead in a storage array


Techniques, systems, and devices are disclosed for reducing data read/write overhead in a storage array, such as a redundant array of independent disks (raid), by dynamically configuring stripe sizes in disk drives. In one aspect, each disk drive is configured with multiple stripe sizes based on statistical file sizes of incoming data traffic.
Facebook, Inc.


02/18/16
20160044860 

Metering unit for granular material


Disclosed is a metering unit for granular material with a conveyor disk driven by a drive motor and rotating approximately concentrically to an inner cover surface of a housing. The conveyor disk has a recess for the reception of at least one grain to be separated via at least one revolution of the conveyor disk.
Horsch Maschinen Gmbh


02/11/16
20160042752 

Apparatus, systems and processes for reducing a hard disk drive's access time and concomitant power optimization


Rotational latency is reduced in a standard conventional form factor hdd system by replacing, for example—the prior art rotary arm actuator of a conventional hdd, with one or more belts and pulleys and one or more read/write heads mounted on, or otherwise associated with the belts. Multiple scaled iterations facilitate energy savings and power optimized systems, without compromise to data access performance..
L2 Drive Llc


02/11/16
20160041782 

Storage device copying of a larger system to a smaller system


Creating a cloned version of a system storage device that contains less capacity than the used space of the original system storage device and the means to prevent the user from making the cloned disk unbootable. A software program can run on a computer and a backup device such as a disk drive, thumb drive, or solid state drive.

02/04/16
20160034215 

Indication of a destructive write via a notification from a disk drive that emulates blocks of a first block size within blocks of a second block size


A disk drive receives a request to write at least one block of a first block size, wherein the disk drive is configured to store blocks of a second block size that is larger in size than the first block size. The disk drive stores a plurality of emulated blocks of the first block size in each block of the second block size.
International Business Machines Corporation


01/28/16
20160027463 

Servo processor receiving photodetector signals


A digital servo method for an optical disk drive includes receiving low-pass filtered and gain-adjusted versions of photodetector output signals resulting from an illumination of an optical disk. Versions of the photodetector signals are digitized to produce digital signals.
Optical Devices, Llc


01/28/16
20160026810 

Method for protecting data stored within a disk drive of a portable computer


A portable computer capable of protecting an encryption key that is sent out to a disk drive after a preboot process has ended is disclosed. The portable computer includes a disk drive for encrypting a volume as a whole, and for decoding data at the volume in response to a receipt of an encryption key from a system.
Lenovo (singapore) Pte. Ltd.


01/28/16
20160026598 

Storage control devices and invoking method thereof


A storage control device comprises a storage control module and a memory module. The storage control module is coupled between a central processing unit and a plurality of hard disk drives.
Inventec Corporation


01/28/16
20160026544 

Using the short stroked portion of hard disk drives for a mirrored copy of solid state drives


Mechanisms for storing data to a storage system comprising a set of one or more solid state storage devices and a set of non-solid state storage devices are provided. A request to write data to the storage system is received and the data is written to the set of one or more solid state storage devices in response to receiving the request.
International Business Machines Corporation


01/21/16
20160019918 

Suspension assembly and disk drive with the same


According to one embodiment, a suspension assembly includes a base plate having a securing plate portion protruding outwardly from a side edge of the base plate, a load beam secured on a first surface of the base plate and extending from the base plate, and a wiring member. The wiring member includes a distal side portion attached to the load beam and the first surface of the base plate, and a proximal side portion extending outwardly from the side edge of the base plate and extending in a direction opposite to the load beam along the support surface..
Kabushiki Kaisha Toshiba


01/21/16
20160019080 

Allocating storage for virtual machine instances based on input/outupt (i/o) usage rage of the disk extents stored in an i/o profile of a previous incarnation of the virtual machine


A method, system and computer program product for allocating storage for virtual machine instances. The input/output (i/o) usage of disk extents utilized by a virtual machine is saved in an i/o profile of the virtual machine.
International Business Machines Corporation


01/21/16
20160018995 

Raid system for processing i/o requests utilizing xor commands


A controller for maintaining data consistency without utilizing region lock is disclosed. The controller is connected to multiple physical disk drives, and the physical disk drives include a data portion and a parity data portion that corresponds to the data portion.
Lsi Corporation


01/14/16
20160012843 

Systems and processes for efficiently storing and retrieving video content


Methods, systems and devices are described to improve the storage and retrieval of video content. The general concepts set forth herein could be used in any video storage system that uses disk drives to store video content, including remote or local storage digital video recorders (dvrs) and the like..
Echostar Technologies L.l.c.


01/14/16
20160012839 

Flexure of disk drive suspension


A tail pad portion is provided in a flexure tail including a metal base and a conductive circuit portion. Tail terminals are arranged in the tail pad portion.
Nhk Spring Co., Ltd.


01/14/16
20160012838 

Flexure of disk drive suspension


A tail pad portion is provided in a flexure tail including a metal base and a conductive circuit portion. Tail terminals are arranged in the tail pad portion.
Nhk Spring Co., Ltd.


01/14/16
20160012837 

Flexure of disk drive suspension


A tail pad portion is provided in a flexure tail including a metal base and a conductive circuit portion. Tail terminals are arranged in the tail pad portion.
Nhk Spring Co., Ltd.


01/14/16
20160012836 

Stepped assembly


A tolerance ring can be disposed between an inner component and an outer component, the inner and outer components defining stepped sidewalls. In an embodiment, a preassembly can include an outer component defining a bore having a stepped inner sidewall, an inner component having a stepped outer sidewall, and a tolerance ring adapted to be disposed between the inner component and the bore.
Saint-gobain Performance Plastics Rencol Limited


01/14/16
20160012834 

Disk drive head suspension tail with stiffened edge alignment features


A head gimbal assembly for a disk drive includes a flexure tail terminal region having flexure bond pads in electrical communication with the head. Each of the flexure bond pads includes a widened region of a corresponding one of a plurality of electrical traces in a conductive layer, and a discontinuous bond pad backing island in a structural layer that overlaps the widened region.
Western Digital Technologies, Inc.


01/14/16
20160011796 

Access route switching method in disk array system


In order to eliminate i/o performance bottleneck of a path in a disk array system, one expander is composed of two internal expanders connected to each other, and when the path falls in a bottleneck, connection of two internal expanders in a designated expander is cut off, and the cut-off internal expanders are connected to a new path to change access route to the disk drive. A device management table managing individual disk drives and a routing table managing access routes of respective paths are updated according to the switching of the access route..
Hitachi, Ltd.


01/14/16
20160011784 

Reliability scheme using hybrid ssd/hdd replication with log structured management


In one embodiment, a method of managing data includes storing a first copy of data in a solid state memory using a controller of the solid state memory, and storing a second copy of the data in a hard disk drive memory using the controller. Write requests are served substantially simultaneously at both the solid state memory and the hard disk drive memory under control of the controller.
International Business Machines Corporation


01/07/16
20160004441 

Access control accessing data in storage and disk drive


An access control method includes: in response to a first access instruction that instructs accessing first data, reading the first data and second data from a storage and deleting the first data and the second data from the storage, the first data being read from a first storage area, the second data being read from a second storage area that is physically adjacent to the first storage area and is not an empty area; and in response to a second access instruction that instructs writing third data to the storage, writing the third data to a third storage area that is adjacent to a storage area located in a physically rearmost position among storage areas in which data has been stored in the storage.. .
Fujitsu Limited


12/31/15
20150380059 

Hanging carrier for hdd


A vibration isolating hard disk drive carrier for isolating the transfer of vibration from one hard disk drive to another comprising a carrier body and one or more isolation hangers is disclosed. The carrier has a first surface configured to couple to inherent features of a first external surface of a hard disk drive, and a second surface configured to couple to inherent features of a second external surface hard disk drive.
Hgst Netherlands B.v.


12/31/15
20150380045 

Disk drive with improved spin-up control


A disk drive is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk. The disk drive further comprises control circuitry configured to measure a rotation speed of the spindle motor, generate a feed-forward control based on the measured rotation speed, and spin-up the spindle motor based on the feed-forward control..
Western Digital Technologies, Inc.


12/31/15
20150380038 

Magnetic data storage using induced strain of a magnetostrictive material


Acoustically assisted magnetic recording can be used in a hard disk drive or a solid state medium. In the described embodiments, otherwise unwriteable high-coercivity media are made amenable to recording by lowering their coercivity via strain induced by acoustic waves.
Oregon State University


12/31/15
20150380034 

Method and writing servo information on a recording medium


A servo system for writing servo information on a recording medium of a hard disk drive and for determining head position based on the servo information with a tracking accuracy, the servo system including a first magnetic head and a servo writer. The servo writer is configured to write the servo information on the recording medium by forming, using the first magnetic head, a first servo pattern comprising a servo burst pattern on a segment of a first track of a first layer of the recording medium; and by forming a second servo pattern comprising addressing information on a segment of a second track of a second layer of the recording medium.
Marvell International Ltd.


12/31/15
20150380025 

Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devices


An altic-based substrate suitable for a thin-film magnetic head is provided. The al2o3—tic based substrate for a thin-film magnetic head including an al2o3 phase and a tic phase, wherein a c-axis lattice constant of the al2o3 phase is 12.992 Å or more and 12.998 Å or less, and a lattice constant of the tic phase is 4.317 Å or more and 4.325 Å or less..
Hitachi Metals, Ltd.


12/31/15
20150380024 

Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devices


An altic-based substrate suitable for a thin-film magnetic head is provided. The al2o3-tic based substrate for a thin-film magnetic head including an al2o3 phase and a tic phase, wherein a c-axis lattice constant of the al2o3 phase is 12.985 Å or more and 12.992 Å or less, and a lattice constant of the tic phase is 4.297 Å or more and 4.325 Å or less..
Hitachi Metals, Ltd.


12/31/15
20150380023 

Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devices


An altic-based substrate suitable for a thin-film magnetic head is provided. The al2o3—tic based substrate for a thin-film magnetic head including an al2o3 phase and a tic phase, wherein a c-axis lattice constant of the al2o3 phase is 12.992 Å or more and 12.998 Å or less, and a lattice constant of the tic phase is 4.297 Å or more and 4.315 Å or less..
Hitachi Metals, Ltd.


12/24/15
20150373881 

System with rack-mounted ac fans


A computer system includes a chassis, one or more hard disk drives coupled to the chassis, and one or more air passages under at least one of the hard disk drives. The air passages include one or more air inlets and one or more air outlets.
Amazon Technologies, Inc.


12/24/15
20150371675 

Hard disk drive low profile disk clamp to tied-shaft motor assembly


A hard disk drive is described, including a low-profile disk clamp to tied-shaft spindle/spindle motor assembly, in which a clamping nut is threaded onto a threaded spindle sleeve and a stationary shaft screw, or tied-shaft, penetrates through the hdd cover and into a shaft. The disk clamp may include a central opening for centering about the sleeve by way of the outer diameter of the clamping nut mating with the outer diameter of the clamp opening..
Hgst Netherlands B.v.


12/24/15
20150370679 

Server and device for analyzing a signal thereof


A server and a signal analyzing device thereof are disclosed. The server includes a plurality of hard disk drive (hdds), a plurality of indicators, at least a jumper, and a logic array.
Inventec Corporation


12/17/15
20150365464 

Download booths


A download booth comprising a local file server operatively connected to a removable disk drive containing, in use, multimedia content, the local file server further comprising a network interface operatively connected to a plurality of wireless access points and a wireless connection manager, wherein the wireless connection manager is configured to authenticate incoming connection requests from a plurality of wireless devices and upon authentication, to temporarily connect each authenticated wireless device to its own access point for the duration of a connection session. The end of the connection session may be determined by an estimated download time for a particular multimedia file, or upon detection of completion of a download from the download booth to the wireless device.

12/17/15
20150364670 

Piezoelectric device, piezoelectric actuator, piezoelectric sensor, hard disk drive, and inkjet printer apparatus


A piezoelectric element exhibiting a small leakage current density and high reliability as compared with a knn thin film piezoelectric element in the related art is provided. The piezoelectric element is characterized by including a lower electrode, a piezoelectric layer primarily made from potassium-sodium niobate, which is a perovskite type compound represented by a general formula abo3, and an upper electrode, wherein the piezoelectric layer is present between the lower electrode and the upper electrode, and the piezoelectric layer has the value determined by dividing the maximum value of intensity of a diffraction peak, where the angle of 2θ is within the range of 21.1°≦2θ≦23.4° in the x-ray diffraction pattern (2θ/θ), by the intensity of a diffraction peak, where 2θ is within the range of 30.1°≦2θ≦33.3°, of 0.04 or less..
Tdk Corporation


12/17/15
20150364155 

Dampers for actuator assembly of hard disk drive


An actuator assembly for a magnetic storage device includes a top surface and a bottom surface that opposes the top surface. The actuator assembly also includes a first constraining layer that is secured to the top surface by a first adhesive layer.
Hgst Netherlands B.v.


12/17/15
20150363263 

Ecc encoder using partial-parity feedback


Ecc encoders that process packets of p bits (with p>1) in a data block in parallel and generate a set of n parity/check bits that are stored along with the original data in the memory block. Encoders according to the invention can be used to create a nonvolatile nand flash memory write cache with bch-ecc for use in a disk drive that can speed up the response time for some write operations.
Hgst Netherlands B.v.


12/17/15
20150363135 

Systems and methods for a mass data storage system having a file-based interface to a host and a non-file-based interface to secondary storage


System and method for transferring data between a host system and a data storage system is provided. The system includes an interface that uses a file based protocol to transfer data between the data storage system and the host system, wherein the data storage system includes a first mass storage device and a second mass storage device; wherein the first mass storage device is a solid state non-volatile memory device and the second mass storage device is a non-solid state memory device.
Sandisk Technologies Inc.


12/17/15
20150363131 

Systems and methods for a mass data storage system having a file-based interface to a host and a non-file-based interface to secondary storage


System and method for transferring data between a host system and a data storage system is provided. The system includes an interface that uses a file based protocol to transfer data between the data storage system and the host system, wherein the data storage system includes a first mass storage device and a second mass storage device; wherein the first mass storage device is a solid state non-volatile memory device and the second mass storage device is a non-solid state memory device.
Sandisk Technologies Inc.


12/17/15
20150361537 

Method of manufacturing swage mount having a mixture of conductive material and a coating material


A swage mount is manufactured for attaching a head suspension assembly to a head actuator arm for a hard disk drive. A conductive material is deposited on a predetermined part of the swage mount.
Intri-plex Technologies, Inc.


12/17/15
20150361256 

Photocurable elastomer composition, gasket for hard disk drive, and hard disk drive


Disclosed is a photocurable elastomer composition that exhibits, when cured, excellent flexibility and barrier properties and has low compression set. The photocurable elastomer composition may comprise components (a) to (d) such that the mass ratio of the component (a) to the component (b) ((a):(b)) is from 25:75 to 75:25, and that the content of the component (c) is 50 mass % or less based on the total content of the components (a), (b), and (c)..
Bridgestone Corporation


12/10/15
20150359115 

Storage canister with multiple storage device mounting elements


A storage canister is provided. The storage canister in one example includes an enclosure, multiple hard disk drives (hdds) located within the enclosure, a plurality of mounting elements configured to receive the multiple hdds, wherein each mounting element of the plurality of mounting elements is configured to receive a hdd, a plurality of suspension elements supporting the plurality of mounting elements, with each suspension element of the plurality of suspension elements supporting and providing vibration isolation to a corresponding hdd of the multiple hdds, and an external connector configured to be externally accessible, with the external connector being electrically coupled to the plurality of mounting elements..
Hgst Netherlands B.v.


12/10/15
20150356988 

Processing servo data from two or more read transducers co-located on a slider


Two or more signals are read from two or more respective tracks of a disk drive recording medium using respective two or more read transducers co-located on a slider. The slider is aligned to the two or more tracks in response to the correlation between the two or more signals..
Seagate Technology Llc


12/10/15
20150356987 

Disk drive suspension assembly having a partially flangeless load point dimple


Various embodiments concern a suspension assembly of a disk drive. The suspension assembly includes a load beam comprising a major planar area formed from a substrate.
Hutchinson Technology Incorporated


12/10/15
20150355685 

Sealed storage canister


A sealed storage canister is provided. The sealed storage canister in one example includes a sealed enclosure configured to be substantially hermetically sealed for retaining a predetermined gas or gas mixture, multiple unsealed hard disk drives (hdds) located within the sealed enclosure, with the multiple unsealed hdds configured to allow the predetermined gas or gas mixture to move through the multiple unsealed hdds, at least one mounting element configured to receive the multiple hdds, and an external connector configured to be externally accessible, with the external connector being directly or indirectly electrically coupled to the multiple unsealed hdds..
Hgst Netherlands B.v.


12/03/15
20150348592 

Video recorder


Provided is a video recorder including a case body comprising a space for housing a plurality of electronic parts, the plurality of electronic parts including: an optical disk drive (odd) holder attached to an odd; and a hard disk drive (hdd) holder attached to an hdd; a front panel on which a front printed circuit board (pcb) is mounted and which covers a front side of the case body; and a rear panel on which a rear pcb is mounted and which covers a rear side of the case body.. .
Hanwha Techwin Co., Ltd.


12/03/15
20150348584 

Coded seeking apparatus and techniques for data retrieval


Data blocks to be stored on a disk-based data storage device (e.g., a hard disk drive, etc.) are coded together to form a plurality of linearly independent network coded blocks. The network coded blocks are then stored on the data storage device.
Massachusetts Institute Of Technology


12/03/15
20150348583 

Disk drive device


A disk drive device of the present disclosure includes a hub including a cylindrical portion with which a recording disk is to be engaged, and fixed with an annular magnet, a base including a support which supports a stator core including coils, and, a bottom which is integral with the support and which faces the coils in an axial direction, a fluid bearing mechanism supporting the hub in a manner freely rotatable relative to the base, and an annular member fixed to an inner circumference of the cylindrical portion of the hub and including a first part that is present in an area where the base and the magnet face with each other.. .
Samsung Electro-mechanics Japan Advanced Tech. Co. Ltd.


12/03/15
20150348582 

Spindle motor and disk drive apparatus


A motor includes a rotor hub with a first horizontal surface, a cylindrical surface, a second horizontal surface, and a projecting portion. The first horizontal surface is located above the sleeve.
Nidec Corporation


12/03/15
20150348577 

Reducing ion migration in a hard disk drive microactuator flexure assembly


Approaches to a suspension for a hard disk drive include having an adhered one or more piezo actuating device driven by a negative bias driving voltage. The negative bias driving voltage is lower than ground, therefore such voltage inhibits the migration of ions of an electrically conductive adhesive to an electrically conductive flexure layer, and inhibits the degradation of the resistance of an insulating material positioned between the conductive adhesive and the conductive flexure layer..
Hgst Netherlands B.v.


12/03/15
20150348576 

Hard disk drive suspension dimple


Approaches to a suspension for a hard disk drive (hdd) include a non-hemispherical dimple for movably coupling a flexure with a load beam, where the length of the non-hemispherical dimple exceeds the width. Therefore, in the context of a microactuator system, piezo actuating devices may be installed closer together to improve the microactuator stroke performance in moving the slider over the disk surface..
Hgst Netherlands B.v.




Disk Drive topics: Disk Drive, Hard Disk Drive, Piezoelectric, Optical Disk Drive, Die Assembly, Circuit Board, Form Factor, Fastening Device, Storage Device, A Fastening Device, Scheduling

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