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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
01/28/16
20160027463 
 Servo processor receiving photodetector signals patent thumbnailServo 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 patent thumbnailMethod 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 patent thumbnailStorage 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 patent thumbnailUsing 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 patent thumbnailSuspension 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 patent thumbnailAllocating 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 patent thumbnailRaid 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 patent thumbnailSystems 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 patent thumbnailFlexure 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 patent thumbnailFlexure 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.


12/03/15
20150347232 

Raid surveyor


A method for surveying a data storage subsystem for latent errors before a failing disk drive of the data storage subsystem fails and recovering unreadable data usable to reconstruct data of the failing disk drive. The method includes determining that a disk drive of a plurality of disk drives of the data storage subsystem meets a threshold for being identified as a failing disk drive, and prior to failure of the failing disk drive, surveying at least a portion of the data on the remaining plurality of disk drives to identify data storage areas with latent errors.
Compellent Technologies


11/26/15
20150340062 

Differential class ab output stage with differential mode on chip supply filter


A disk drive preamplifier integrated circuit. The integrated circuit comprises a differential output driver configured to drive readback data to an output load, wherein the output driver comprises a differential mode filter configured to filter alternating current of an on-chip power supply..
Texas Instruments Incorporated


11/26/15
20150340057 

Disk drive unit and manufacturing the same


A method manufactures a disk drive unit having a stator part that includes a base and a shaft member extending in an axial direction, and a rotor part that is rotatably supported by the stator part and includes a sleeve accommodating at least a part of the shaft member, and a hub fixed to an outer peripheral surface of the sleeve and including a setting surface on which a recording disk is set. The method includes fixing the hub to the outer peripheral surface of the sleeve, cutting the setting surface by a cutting tool that moves in a direction perpendicular to a rotational axis of the rotor part while rotating the rotor part, in a state in which the hub is fixed to the outer peripheral surface of the sleeve, and accommodating the shaft member in the sleeve after the cutting..
Samsung Electro-mechanics Japan Advanced Technology Co., Ltd.


11/26/15
20150339204 

Method and apparatus to utilize large capacity disk drives


A method of utilizing storage in a storage system comprises prioritizing a plurality of storage areas in the storage system for data recovery with different priorities; and performing data recovery of the storage system at an occurrence of a failure involving one or more of the storage areas in the storage system based on the priorities. Data recovery for one storage area having a higher priority is to occur before data recovery for another storage area having a lower priority in the storage system.
Hitachi, Ltd.


11/19/15
20150334880 

System and air-cooling hard drives in liquid-cooled server rack


Embodiments that allow for the air cooling of disk drives associated with liquid cooled nodes are disclosed. A node for performing computing operations includes a frame, a power supply coupled to the .
frame


11/19/15
20150332728 

Hard disk drive base having vibration propagation mitigation feature


A hard disk drive (hdd) enclosure base is described, in which a mechanical feature is implemented that mitigates the propagation of vibration through the base. For example, an hdd base as described can mitigate the propagation of vibration to the head suspension and thereby eliminate read-back signal losses resulting from such vibration, such as in response to an op-shock event..
Hgst Netherlands B.v.


11/19/15
20150332711 

Asymmetric mamr head with self-aligned spin torque oscillator along flare edge for shingled magnetic recording


The present disclosure generally relates to the structure of a perpendicular magnetic write head for use in a magnetic disk drive. A shingled-microwave-assisted magnetic recording head for use in a high-areal-density hard disk drive comprises a trailing shield, a flare-shaped main pole, one or more side shields, a spin torque oscillator, and two asymmetric side gaps, where one side gap has a smaller width than the other side gap.
Hgst Netherlands B.v.


11/19/15
20150331459 

Partial-width rack-mounted computing devices


A computing system includes a rack having standard slots for computing devices and computing devices coupled to the rack. One or more of the computing devices includes a chassis, a circuit board assembly in a primarily horizontal orientation, and one or more processors coupled to the circuit board assembly.
Amazon Technologies, Inc.


11/12/15
20150324529 

Personal information system


Systems and methods realize the benefit of portable storage devices by taking advantage of pcs including an optical disk drive, optical disks, such as a cd or a dvd, and the internet. An individual patient provides personal data to a healthcare service center.
Datcard Systems, Inc.


11/12/15
20150324298 

Cache memory for hybrid disk drives


A method for data storage in a data storage system, which includes a main storage device and a non-volatile memory, includes assessing quality levels of respective memory blocks of the non-volatile memory. One or more of the memory blocks whose assessed quality levels are lower than a predefined quality threshold are identified.
Apple Inc.


11/12/15
20150324124 

Cluster solid state drives


Described herein are techniques for arranging a plurality of m.2 solid state drive (ssd) modules and flash storage elements into a compact form factor. On a first side of an ssd sled, a plurality of m.2 ssd modules may be communicatively coupled to a port expander.
Nimble Storage, Inc.


11/12/15
20150323966 

Heat dissipation in computing device


A computing device is disclosed. The computing device includes a shock mount assembly that is configured to provide impact absorption to sensitive components such as a display and an optical disk drive.
Apple Inc.


11/05/15
20150318022 

Caching hard disk drives and hybrid drives


A system includes a read/write module and a caching module. The read/write module is configured to access a first portion of a recording surface of a rotating storage device.
Marvell World Trade Ltd.


11/05/15
20150318016 

Storage device with a cover supporting portion


A disk drive assembly having a base; a voice coil motor assembly (vcm) comprising a vcm cover; a post extending from the base toward the vcm cover; and a latch movable mounted on the post such that the post extends there through, wherein the post comprises a cover supporting portion configured to support the vcm cover, and prevent the vcm cover from compressing the latch and causing the latch to contact both the vcm cover and the base simultaneously when a load is applied to a portion of the vcm cover above the latch.. .
Western Digital Technologies, Inc.


11/05/15
20150317201 

Storage device with error recovery indication


Various embodiments are provided that enable a controller of a storage device having storage media to perform one or more error recovery operations on the storage media, and to convey, while performing the one or more error recovery operations, a message indicating a status of the one or more error recovery operations to a host processor in communication with the storage device. Storage devices implementing embodiments of the present invention include hard disk drives and solid state disk drives comprising a disk head having a magnetoresistive (mr) element configured to read and write data to and from the storage media, and coupled to an analog/digital (a/d) converter, and the error recovery operations are selected from a list of changing an automatic gain control of the a/d converter, positioning the disk head off-track in order to read the data, and adjusting a bias value of the mr element..
International Business Machines Corporation


10/29/15
20150310890 

Method of predicting a noise component associated with a readback signal from a dedicated servo medium, noise predictor thereof, and hard disk drive system


There is provided a method of predicting a noise component associated with a readback signal in a channel from a dedicated servo medium including a data recording layer and a dedicated servo layer. The method including: providing at least one noise prediction module for each of a plurality of types of servo patterns of the servo layer, and predicting the noise component by, for each of a plurality of segments of the readback signal of the data recording layer, using a selected one of the noise prediction modules.
Marvell International Ltd.


10/29/15
20150310886 

Power failure management in disk drives


A disk drive is disclosed comprising a disk, a spindle motor operable to rotate the disk, a head actuated over the disk, an interface operable to receive a host supply voltage, and a capacitor. The host supply voltage is used to charge the capacitor to a capacitor voltage higher than the host supply voltage.
Western Digital Technologies, Inc.


10/29/15
20150309732 

Selectively configuring hard-disk drive system


In one embodiment of the disclosure, a hard-disk drive (hdd) controller for an hdd system is selectively configurable to operate with a first type of host system having a first logical block size and a second type of host system having a second logical block size, different from the first logical block size. Another embodiment of the disclosure is a method implemented by the hdd system..
Lsi Corporation


10/22/15
20150302897 

Hard disk drive cover and methods of manufacturing


A hard disk drive cover with a smooth bottom (inner) surface and a textured outer surface is provided for covering a hard disk drive base assembly. A method of manufacturing the hard disk includes providing a metal material.
Intri-plex Technologies, Inc.


10/22/15
20150302871 

Method and determining relative head-to-disk speed


A system including a write head, a read head, a mixer, and a filter. The write head is configured to write a pattern on a track of a medium of a hard disk drive, wherein the pattern has a first frequency.
Marvell International Ltd.




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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