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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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05-01-2012 дата публикации

Magnetic recording apparatus and method of testing magnetic recording apparatus

Номер: US20120002316A1

Автор: Kazuto Kashiwagi, Masatoshi Sakurai, Naoki Tagami

Принадлежит: Toshiba Corp

According to one embodiment, there is provided a magnetic recording apparatus including a head slider including read and write elements, and a magnetic recording medium including magnetically recordable recording tracks with a width L 1, a wide land track with a width L 2 larger than the width L 1 of the recording track, and non-recording sections with a width G 1 each provided between adjacent recording tracks. The width L 1 of the recording track is smaller than a bottom read width BRW of the read and write elements, and the width L 2 of the wide land track is larger than the bottom read width BRW of the read and write elements.

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Номер записи: 1

05-01-2012 дата публикации

Information recording and reproducing apparatus, program for controlling same, computer-readable storage medium, method for controlling information recording and reproducing apparatus, and information storage medium

Номер: US20120002514A1

Автор: Atsushi Etoh, Hideharu Tajima, Hirohisa Yamada, Ikuo Nakarno, Masaki Yamamoto, Shigemi Maeda, Takashi Arimoto, Tetsuya Hayashi, Tetsuya Okumura, Yasuhiro Harada, Yoshihisa Adachi

Принадлежит: Sharp Corp

An invention disclosed includes a layer number obtaining section ( 222 ) for determining which information storage layer (L 1 ) has been accessed and a layer type identifying section ( 223 ) for identifying a type of the information storage layer (L 1 ) determined by the layer number obtaining section ( 222 ). With the configuration, even in a case where an information recording and reproducing apparatus accesses an information storage layer different from an intended information storage layer by false operation or the like, it is still possible to dissolve mismatching between a recording or reproduction control scheme being set up and a recording or reproduction control scheme suitable for the information storage layer thus accessed.

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Номер записи: 2

05-01-2012 дата публикации

Characterizing frequency response of a multirate system

Номер: US20120002525A1

Автор: Eric R. DUNN

Принадлежит: Toshiba Corp

Frequency response is characterized for mechanical components of a multirate system operating in a closed-loop environment. A disturbance is injected at the frequency of interest and at each of the alias frequencies thereof as an input into the multirate system, and a matrix equation composed of resulting measurements of the response of the multirate system is solved to compute the frequency response at the frequency of interest and at each of the alias frequencies. The resulting frequency response can be used to synthesize the transfer function of the entire system, which allows simulation and evaluation of the relative performance of multiple controller designs without the need for further frequency response measurements.

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Номер записи: 3

09-02-2012 дата публикации

Enhanced navigation system using digital information medium

Номер: US20120033942A1

Автор: Hideki Mimura, Hideki Takahashi, Yasufumi Tsumagari

Принадлежит: Individual

A new navigation function is added to a legacy DVD-Video. A player unit plays back recorded contents, that include video contents or AV contents and ENAV contents associated with contents (menu, chapter) of the video contents, from a DVD-Video disc. The video contents of the DVD disc are played back by a video playback engine. The ENAV contents of the DVD disc are played back by an ENAV engine. The ENAV engine controls playback of the ENAV contents and that of the video contents in combination, connection, and/or synchronism with each other according to the played-back contents of the ENAV contents.

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Номер записи: 4

01-03-2012 дата публикации

Electronic device and connector

Номер: US20120052745A1

Автор: David Tupman, Donald J. Novotney, John Benjamin Filson

Принадлежит: Apple Inc

A connector interface system for a communication device is disclosed. The interface includes a docking connector. The docking connector includes first make/last break contacts that minimize internal damage to the internal electronics. The docking connector also includes specific keying arrangement to prevent noncompliant connectors from being plugged in, and thereby minimizes potential damage to the multi-communication device. The connector interface system also includes a remote connector which provides for the ability to output audio, input audio, provides I/O serial protocol, and to provide an output video. Embodiments of the present invention allow for a standard headphone cable to be plugged in but also for special remote control cables, microphone cables, video cables could be utilized in such a system. The connector interface system also includes a serial protocol to control device features. These controls help a user sort and search for data more efficiently within the device.

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Номер записи: 5

29-03-2012 дата публикации

Fluid bearing device

Номер: US20120073138A1

Автор: Kenji Ito

Принадлежит: Individual

Disclosed is a fluid bearing device in which a high adhesive strength is ensured in fixing another member by adhesion to a resin housing. A bearing sleeve is secured in position inside the resin housing, and a shaft member is radially supported in a non-contact fashion by a dynamic pressure action of lubricant generated in a radial bearing clearance between the shaft member and the bearing sleeve. A metal bracket for mounting the stator coil of a motor is fixed by adhesion to the outer periphery of the housing, in which the adhesion portion of the outer periphery of the housing to be fixed to the bracket is roughened, setting the surface roughness to 0.5 μmRa to 2.0 μmRa.

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Номер записи: 6

29-03-2012 дата публикации

Method of testing data storage devices and a gender therefor

Номер: US20120079194A1

Автор: Jong-Hwan Lim

Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method of testing data storage devices, the method including virtualizing data storage spaces of N data storage devices to a single virtual storage space, wherein N is a natural number equal to or greater than two, and testing the N data storage devices by performing a testing sequence on the virtual storage space.

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Номер записи: 7

05-04-2012 дата публикации

Magnetic disk drive using offset in positioning head to read data and head positioning method

Номер: US20120081810A1

Автор: Takayuki Kawabe

Принадлежит: Toshiba Corp

According to one embodiment, a magnetic disk drive comprises a write count memory, a read offset setting module and a controller. The write count memory stores a write count for each track or for each zone on a disk. The read offset setting module sets, in accordance with a write count for an adjacent track to a target track or for a zone to which the adjacent track belongs, an offset from a predetermined position on the target track in a read position in which a head is to be positioned when the head is positioned on the target track for data read. The write count is stored in the write count memory. The controller positions the head in a position shifted from the predetermined position by the set offset.

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Номер записи: 8

14-06-2012 дата публикации

Optical disk record and playback apparatus and pickup protecting method thereof

Номер: US20120151506A1

Автор: Yorio Takahashi

Принадлежит: Panasonic Corp

The present invention avoids a case in which a pickup lens and a lens protector come into contact with a structure of a disk cartridge and are damaged. When an operation distance is short and there is a disk cartridge 203 and the disk cartridge 203 is not an exclusive cartridge, a moving range of the pickup 107 is restricted or an actuating operation thereafter is stopped depending upon whether the optical disk medium 101 loaded into the optical disk apparatus is an optical disk medium having a short operation distance, whether there is a disk cartridge 203, and whether a structure of the disk cartridge 203 is prevented from coming into contact with a pickup lens or the lens protector which is exclusive for the optical disk medium having the short operation distance.

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Номер записи: 9

28-06-2012 дата публикации

Spindle motor for driving a hard disk drive

Номер: US20120162820A1

Автор: Joerg Hoffmann, Markus Loehr, Olaf Winterhalter

Принадлежит: Minebea Co Ltd

The invention relates to a spindle motor, preferably for driving a hard disk drive, having a stationary motor component and a rotatable motor component that is rotatably supported with respect to the stationary motor component and that is driven by an electromagnetic drive system, at least one storage disk being fixed to the rotatable motor component using some means of mounting and fastening. According to the invention, at least parts of the rotatable motor component and at least parts of the means of mounting and fastening have a wear resistant surface coating or are subjected to a wear resistant surface treatment.

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Номер записи: 10

05-07-2012 дата публикации

Optical device

Номер: US20120174135A1

Автор: Hyun Woo Lee, Min Shik ROH, Min Song

Принадлежит: Toshiba Samsung Storage Technology Korea Corp

An optical device is provided including a tray body linearly moving and loading an optical disk. A case guide is configured to guide the linear movement of the tray body. A damper is interposed between the tray body and the case guide to attenuate vibration of the tray body.

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Номер записи: 11

19-07-2012 дата публикации

Rotating machine comprising insulation sheet for insulating coil and base, and method of producing the rotating machine

Номер: US20120182645A1

Автор: Daiki Hayashi, Yoshio Kurokawa

Принадлежит: Alphana Technology Co Ltd

A rotating machine includes: a coil that is provided on the first surface side of a base and formed with a wire; an insulation sheet that has a sheet hole formed at the position aligned with the position of a guide hole in the base; and a wiring that is provided on the second surface and electrically connected to the coil. The wire forming the coil has a guide wire that is guided on the second surface side through the guide hole and the sheet hole to be connected to the wiring. The insulation sheet has an extending portion that protrudes from the sheet hole and covers at least part of the circumferential surface of the guide hole. The extending portion is placed between part of the circumferential surface of the guide hole and the guide wire.

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Номер записи: 12

19-07-2012 дата публикации

Media library monitoring system and method

Номер: US20120185589A1

Автор: Robert C. Sims

Принадлежит: Individual

Embodiments of methods and systems comprise collecting data associated with a library or library components and storing the collected data in repository. By collecting data associated with a library or library components and storing the collected data in a repository, the degradation of library components can be monitored and the reliability of library components determined, allowing unreliable components to be bypassed or replaced, enhancing the reliability of the library and preventing data loss.

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Номер записи: 13

02-08-2012 дата публикации

Information recording device and information recording method

Номер: US20120194946A1

Автор: Hideaki Tanaka, Hikaru Watanabe, Tatsuya Haga

Принадлежит: Toshiba Corp

According to one embodiment, an information recording device includes: a recording controller configured to control recording of information on a magnetic recording medium having tracks by a recording method; a managing module configured to manage two or more counters corresponding to each of plural track groups that are adjacent to each other; an updating module configured to update a count of one of the two or more counters corresponding to a second track group that is adjacent to a first track group of the plural track groups when information has been recorded on the first track group; a determining module configured to determine an attribute of the second track group based on the updated count of the one counter; and a rewriting module configured to rewrite information recorded in the second track group based on the determined attribute.

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Номер записи: 14

23-08-2012 дата публикации

Method and apparatus for mounting a disc

Номер: US20120213047A1

Автор: Brian van der Beek

Принадлежит: MARVELL WORLD TRADE LTD

Aspects of the disclosure provide a method for mounting a storage disc. The method includes receiving data stored at a location on the storage disc. The location on the storage disc used for providing a structure of the storage disc as a result of a previous recording on the storage disc. Then, the method includes determining a medium type based on a parameter in the structure that is indicative of the medium type.

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Номер записи: 15

27-09-2012 дата публикации

Spindle motor and storage disk drive

Номер: US20120243397A1

Автор: Takashi Yamamoto, Tsuchitsugu Watanabe

Принадлежит: Nidec Corp

A spindle motor includes a stationary portion and a rotating portion including a seal defining portion. The stationary portion includes a shaft portion, an annular member fixed to an upper portion of the shaft portion in, for example, a tight-fitting condition, and a cap member. A radially inner end portion of the cap member is fixed to each of the shaft portion and the annular member preferably through, for example, an adhesive. An upper seal portion, in which a surface of a lubricating oil is arranged, is defined in an upper seal gap defined between an outer circumferential surface of the annular member and an inner circumferential surface of the seal defining portion. The cap member is arranged to cover an upper side of the upper seal portion.

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Номер записи: 16

04-10-2012 дата публикации

Motor and storage disk drive

Номер: US20120250183A1

Автор: Kazushi Miura, Mitsuhiro Takemoto, Takehito Tamaoka

Принадлежит: Nidec Corp

A motor includes a stationary portion and a rotating portion. The rotating portion includes a sleeve portion including one communicating hole arranged to extend completely there through from an upper surface to a lower surface thereof, and a cover portion including a hole portion. The axial extension range of the hole portion is arranged to overlap with the axial extension range of the communicating hole in a radial direction. A center of the hole portion is arranged on a plane including a central axis and a center of the communicating hole. The communicating hole and the hole portion are arranged on opposite sides of the central axis. The following inequality is satisfied: V 2 <(σ 1 /σ 2 )·V 1 , where σ 1 is the density of the sleeve portion, V 1 is the volume of the communicating hole, σ 2 is the density of the cover portion, and V 2 is the volume of the hole portion.

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Номер записи: 17

11-10-2012 дата публикации

Apparatus and method for media presentation

Номер: US20120257766A1

Автор: Robert Gee, Shafer Seymour

Принадлежит: Continental Automotive Systems Inc

A user who desires to use a media application at a vehicle is identified. A stop mark associated with the user is created and the stop mark is configured to uniquely identify the user compared to other users. The media application is presented to the user at the vehicle. The operation of the media application is halted at a stopping point when the user is using the media application and according to instructions from the user. The stopping point on the media is marked with the stop mark. Subsequently, the media application is restarted according to the stop mark when the user wishes to restart the media application.

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Номер записи: 18

08-11-2012 дата публикации

Copyright protection data processing system and reproduction device

Номер: US20120284515A1

Автор: Kaoru Murase, Masaya Yamamoto, Sanzo Ugawa, Takahiro Yamaguchi, Toshihisa Nakano

Принадлежит: Individual

A content protection data processing system and a playback device determine whether to permit playback of a content recorded in a recording medium, based on a type of the recording medium and a signature type of a signature attached to a program. Additionally, the content protection data processing system and the playback device switch a procedure relating to a digital signature for each signature type of the digital signature, which enables both the protection of the copyright of the content and the efficient manufacturing of commercial ROM media.

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Номер записи: 19

15-11-2012 дата публикации

Breakdown prediction device, breakdown prediction method, and breakdown prediction program

Номер: US20120287526A1

Автор: Hiroshi Sakai, Shigeru Kasai, Yasuhiro Sasaki

Принадлежит: NEC Corp

A breakdown prediction device of the present invention includes: a vibration measurement unit that measures vibrations generated from a device being monitored; and a signal processing unit that performs breakdown prediction when a specific vibration is measured at the vibration measurement unit, a maximum vibration amplitude value of the vibration exceeding an upper limit vibration amplitude threshold, and a vibration amplitude value thereof being below a lower limit vibration amplitude threshold at a point in time when a specified time is reached from a point in time when the vibration exceeds the upper limit vibration amplitude threshold.

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Номер записи: 20

29-11-2012 дата публикации

Disk drive motor

Номер: US20120299437A1

Автор: Hideki Noto, Toshiyuki Nishikata

Принадлежит: Minebea Motor Manufacturing Corp

A ring-shaped back yoke and a ring-shaped magnet are provided on a bottom surface of a ring-shaped opening part formed at a central portion of an alignment ring of a turntable part. The back yoke is provided with a protruding pawl which protrudes in a direction perpendicular to a plane of the back yoke, and the alignment ring is provided with a through hole into which the protruding pawl is inserted when mounting the back yoke to the alignment ring. The protruding pawl of the back yoke and an upper surface of a rotor frame are fixed together using an adhesive.

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Номер записи: 21

13-12-2012 дата публикации

Spindle motor

Номер: US20120314983A1

Автор: Ju Ho Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is a spindle motor including: a shaft; a sleeve supporting the shaft; a hub including the shaft coupled to the center of rotation thereof; a sealing member including an operating fluid provided between the shaft and the sleeve and formed to be spaced apart from an outer peripheral surface of the sleeve; an oil sealing part including an oil interface formed between an inner peripheral surface of the sealing member and the outer peripheral surface of the sleeve facing each other, and a sealing surface layer formed on an outer side of the oil interface. The sealing surface layer is formed from an inner side of the oil interface formed in the oil sealing part of a fluid dynamic pressure bearing part toward the outer side thereof, thereby making it possible to improve an oil sealing effect in the oil interface.

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Номер записи: 22

27-12-2012 дата публикации

Bearing apparatus, spindle motor, and disk drive apparatus

Номер: US20120326543A1

Автор: Akihiro Kimura, Kazuhiro Sato, Kunio SAKURADA, Kyoko HORISE, Takehito Tamaoka, Teiichi Hirono, Yoichi Sekii

Принадлежит: Nidec Corp

A bearing apparatus includes a stationary shaft, a first annular member, and a rotating member. The rotating member includes a first inner circumferential surface arranged opposite to the outer circumferential surface of the stationary shaft, and a second inner circumferential surface arranged opposite to an outer circumferential surface of the first annular member. A lubricating oil is arranged in a gap between a surface of a stationary member and the rotating member. On an upper side of an upper surface of the lubricating oil, the first annular member and the rotating member are arranged radially opposite to each other with a slight gap defined therebetween, so that a labyrinth seal is defined. The labyrinth seal and a fixing range over which the stationary shaft and the first annular member are fixed to each other are arranged to overlap with each other in a radial direction.

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Номер записи: 23

10-01-2013 дата публикации

Spindle motor

Номер: US20130009500A1

Автор: Dong Hyun Lee

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including: a sleeve including a shaft rotatably mounted therein and a circulation hole formed therein; and a cover member mounted on a lower end portion of the sleeve and including an opening/closing part opening and closing the circulation hole.

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Номер записи: 24

10-01-2013 дата публикации

Optical disc reproducing apparatus

Номер: US20130011112A1

Автор: Keizo Yuki

Принадлежит: Panasonic Corp

A reproducing apparatus includes a signal processing unit that performs background playback of a title based on data recorded on a BD after an operation mode is changed from a reproduction mode of the BD to a different mode. The signal processing unit holds screen information concerning a mask screen that masks a reproduction screen of the title, and screen information concerning a replacement demand screen that prompts replacement of the housed BD, outputs the mask screen when the operation mode is returned to the reproduction mode in a case where a playback position of the BD does not reach an end during the background playback, and outputs the replacement demand screen when the operation mode is returned to the reproduction mode in a case where the playback position reaches the end during the background playback.

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Номер записи: 25

31-01-2013 дата публикации

Inter-track interference cancelation in the presence of frequency offset

Номер: US20130027801A1

Автор: Jason Bellorado, Kai Keung Chan, Marcus Marrow, Naveen Kumar

Принадлежит: Link A Media Devices Corp

An initial phase offset between a center track and a side track is determined. An initial side track pulse shape is determined using the initial phase offset and side track interference. The initial side track pulse shape minimizes a contribution of the side track interference to a center track bit. The contribution of the side track interference is removed from the center track bit using the initial side track pulse shape and the side track interference.

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Номер записи: 26

07-02-2013 дата публикации

Spindle motor

Номер: US20130033137A1

Автор: Chang Jo Yu

Принадлежит: Samsung Electro Mechanics Co Ltd

A spindle motor including: a lower thrust member fixedly coupled to a base member; a shaft fixedly coupled to at least one of the lower thrust member and the base member; a sleeve disposed on an upper portion of the lower thrust member and rotatably installed on the shaft; a rotor hub coupled to the sleeve to thereby rotate together with the sleeve; an upper thrust member fixedly coupled to an upper end portion of the shaft and forming a liquid-vapor interface together with the sleeve; and a cover member fixedly coupled to the shaft so as to be disposed on an upper portion of the upper thrust member, wherein the upper thrust member includes a stepped jaw part having a lower surface supported by an upper surface of the shaft and an upper surface pressed by the cover member, so as to increase coupling strength with the shaft.

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Номер записи: 27

07-03-2013 дата публикации

Hydrodynamic bearing assembly and spindle motor including the same

Номер: US20130058601A1

Автор: Ki Hyung Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a hydrodynamic bearing assembly and a spindle motor including the same. The hydrodynamic bearing assembly includes: a shaft; a sleeve including a shaft hole so that the shaft is rotatably inserted thereinto; and first and second dynamic pressure generation grooves formed in upper and lower portions of at least one of an outer diameter of the shaft and an inner diameter of the sleeve in an axial direction thereof so as to generate dynamic pressure in a lubricating fluid filling a bearing clearance formed between the shaft and the sleeve at the time of rotation of the shaft, wherein the bearing clearance between the shaft and the sleeve is narrowed downwardly in the axial direction.

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Номер записи: 28

07-03-2013 дата публикации

Hydrodynamic bearing assembly

Номер: US20130058602A1

Автор: Ki Hyung Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a hydrodynamic bearing assembly structure capable of significantly reducing an increase in current while increasing bearing strength. The hydrodynamic bearing assembly includes: a rotating member including a shaft; a sleeve including a shaft hole so that the shaft is rotatably inserted thereinto; and a plurality of dynamic pressure generation grooves formed in at least one of an outer circumferential surface of the shaft and an inner circumferential surface of the sleeve and formed in upper and lower portions of the shaft or the sleeve in an axial direction so as to generate dynamic pressure in lubricating fluid filled in a bearing clearance formed between the shaft and the sleeve at the time of rotation of the shaft, wherein any one or more of the plurality of dynamic pressure generation grooves has a depth deeper than that of the other dynamic pressure generation groove.

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Номер записи: 29

14-03-2013 дата публикации

Systems and Methods for Generating Predictable Degradation Bias

Номер: US20130063835A1

Автор: Fan Zhang, Shaohua Yang, Weijun Tan, YANG Han, Zongwang Li

Принадлежит: LSI Corp

Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes a data detector circuit and a bias calculation circuit. The data detector circuit is operable to apply a data detection algorithm to a first data set to yield a first series of soft decision data, and to apply the data detection algorithm to a second data set to yield a second series of soft decision data. The bias calculation circuit operable to calculate a series of bias values based at least in part on the first series of soft decision data and the second series of soft decision data. The series of bias values correspond to a conversion between the first series of soft decision data and the second series of soft decision data.

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Номер записи: 30

14-03-2013 дата публикации

Apparatus for fluid recirculation

Номер: US20130064485A1

Автор: Alan Lyndon Grantz, Lynn Bich-Quy Le

Принадлежит: SEAGATE TECHNOLOGY LLC

A system, method and means is provided for withstanding mechanical shock for use with fluid dynamic bearings. A sealing system is provided that withstands 1000 G shock events. In an aspect, a grooved pumping seal employed between a thrust plate and a shield, a thrust plate having spiral grooves, a fluid recirculation passageway, and a reservoir creates an asymmetric pressure gradient. In an aspect, fluid is retained and air is purged utilizing an enlarged fluid reservoir, axial channels and an angled fill hole. In an aspect, a shaft is attached to a top cover supplying radial stiffness, and an enlarged single-sided thrust plate improves dynamic parallelism.

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Номер записи: 31

21-03-2013 дата публикации

Disk drive device for rotating a disk

Номер: US20130069460A1

Автор: Hiroki Yamazaki, Hiroshi Muramatsu

Принадлежит: Alphana Technology Co Ltd

In the brushless motor, a magnetic recording disk is to be mounted on a hub. A base plate rotatably supports the hub on the upper surface. A laminated core is fixed on the upper surface of the base plate and has a ring portion and a plurality of teeth that extend radially from the ring portion. Coils are wound around the plurality of teeth. A cylindrical magnet is fixed to the hub and is magnetized for driving with a plurality of poles along the circumferential direction and is arranged to radially face the plurality of teeth of the laminated core. A wire of one end of one of the coils is drawn out to the bottom surface of the base plate through a hole arranged on the base plate. The wire is connected to a driving line for supplying a current to the coils at a position other than the position of the hole on the base plate. The hole of the base plate is plugged with a resin.

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Номер записи: 32

21-03-2013 дата публикации

Spindle motor and method for manufacturing the same

Номер: US20130069464A1

Автор: Sang Jin Park, Won Ki Park

Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is a spindle motor including: a rotor including a shaft, a hub, and a magnet; a stator including a sleeve rotatably supporting the shaft, a base having the sleeve coupled thereto, and an armature facing the magnet and including a core and a coil; and a fluid dynamic bearing part formed between the rotor and the stator by being filled with oil, wherein the armature is coupled to an outer peripheral portion of the sleeve.

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Номер записи: 33

21-03-2013 дата публикации

Audio controller of a docking station

Номер: US20130073066A1

Автор: Bart Downing, David Lombard, James Herbert, Peter Yen

Принадлежит: Hewlett Packard Development Co LP

A method for managing audio of a device including scanning for an audio controller of a docking station coupled to the device, determining whether an audio device is coupled to an audio interface of the docking station if the device is coupled to the audio controller, and transferring audio between the device and the audio controller of the docking station if the audio device is coupled to the audio interface of the docking station.

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Номер записи: 34

28-03-2013 дата публикации

BEARING APPARATUS, SPINDLE MOTOR, AND DISK DRIVE APPARATUS

Номер: US20130077190A1

Автор: HIRONO Teiichi, HORISE Kyoko, KIMURA Akihiro, SAKURADA Kunio

Принадлежит: NIDEC CORPORATION

A bearing apparatus includes stationary and rotating portions. The stationary portion includes a stationary shaft and a first cup portion. The rotating portion includes an annular recessed portion and first and second inner circumferential surfaces. Lubricating oil is arranged in a gap between the stationary and rotating portions. An upper surface of the lubricating oil is located between the second inner circumferential surface and an outer circumferential surface of the first cup portion. A lower surface of the lubricating oil is located between the rotating and stationary portions. The rotating portion further includes a through hole filled with the lubricating oil. One of the first cup portion and the rotating portion includes a pumping groove array arranged thereon to cause the lubricating oil to flow toward one end of the through hole during rotation of the rotating portion. 1. A bearing apparatus comprising: a stationary shaft arranged along a center axis extending in a vertical direction;', 'a circular plate portion extending radially outward from the stationary shaft; and', 'a cylindrical portion projecting downward from an outer edge portion of the circular plate portion;, 'a stationary portion includinga rotating portion arranged to rotate about the stationary shaft; anda lubricating oil; whereinthe circular plate portion and the cylindrical portion together define a first cup portion; a first upper surface arranged opposite to a lower surface of the circular plate portion;', 'an annular recessed portion arranged to accommodate at least a lower end portion of the cylindrical portion;', 'a first inner circumferential surface arranged opposite to an outer circumferential surface of the stationary shaft; and', 'a second inner circumferential surface arranged opposite to an outer circumferential surface of the first cup portion;, 'the rotating portion includesthe lubricating oil is arranged in a gap between the stationary and rotating portions;at least one of ...

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Номер записи: 35

28-03-2013 дата публикации

Methods and apparatus to manage zones of a multi-zone media playback system

Номер: US20130080955A1

Автор: Joni Hoadley, Robert Reimann

Принадлежит: Individual

Methods and apparatus to manage zones of a multi-zone media playback system are disclosed. An example apparatus includes a user interface; a controller to configure one or more zone groups each associated with one or more media playback devices; a detector to monitor the user interface for a drag of an icon representative of a first one of the zone groups on the user interface from a first position to a second position; and a configuration implementer to change a configuration of the one or more zone groups in response to a detected drag of the icon.

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Номер записи: 36

04-04-2013 дата публикации

Spindle motor

Номер: US20130082555A1

Автор: Duck Young Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is a spindle motor in which oil sealing parts are surface-treated stepwise with respect to oil used as a fluid dynamic bearing, such that sealing of the oil sealing part is enhanced, thereby preventing scattering, or the like, of the oil. According to preferred embodiments of the present invention, oil contact surfaces are surface-treated stepwise in the direction from the inner side of the oil interface formed in the oil sealing part of a fluid dynamic bearing part toward the outer side thereof, thereby making it possible to enhance maintenance of the oil interface.

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Номер записи: 37

18-04-2013 дата публикации

SPINDLE MOTOR AND DISK DRIVE APPARATUS

Номер: US20130094342A1

Автор: MIZUKAMI Junya, Nishimura Hideki, SAITO Kazuyoshi, SEKII Yoichi, SHIRAI Hirokazu, YAWATA Atsushi

Принадлежит: NIDEC CORPORATION

A spindle motor includes a stationary portion and a rotating portion. The rotating portion includes a magnet arranged around a central axis extending in a vertical direction. The stationary portion includes a base member and a magnetic member arranged below the magnet and fixed to the base member. The base member includes an upper surface extending out perpendicularly or substantially perpendicularly to the central axis, and a wall surface extending in an axial direction. The magnetic member includes an annular plate portion arranged on the base member and a projecting portion arranged to extend downward from the plate portion. At least a portion of the projecting portion is arranged to be in contact with the wall surface. An adhesive is arranged between the plate portion and the upper surface of the base member and between the projecting portion and the wall surface. 1. A spindle motor comprising:a stationary portion; anda rotating portion arranged to rotate with respect to the stationary portion; whereinthe rotating portion includes a magnet arranged around a central axis extending in a vertical direction; a base member; and', 'a magnetic member arranged below the magnet and fixed to the base member;, 'the stationary portion includes an upper surface extending out perpendicularly or substantially perpendicularly to the central axis; and', 'a wall surface extending in an axial direction;, 'the base member includes an annular plate portion arranged on the upper surface of the base member; and', 'a projecting portion arranged to extend downward from the plate portion;, 'the magnetic member includesat least a portion of the projecting portion is in contact with the wall surface; andthe stationary portion further includes an adhesive arranged between the plate portion and the upper surface of the base member and between the projecting portion and the wall surface.2. The spindle motor according to claim 1 , wherein the adhesive extends to a radially outer end portion of ...

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Номер записи: 38

25-04-2013 дата публикации

Stator core and spindle motor including the same

Номер: US20130099622A1

Автор: Jong Ryeol Oh, Song Bon Oh

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a stator core including: a coreback having an installation hole formed therein; a plurality of teeth extended from the coreback in a radial direction; and extension parts, each extended from each of the plurality of teeth in a circumferential direction and having a through-hole formed therein to reduce cogging torque.

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Номер записи: 39

25-04-2013 дата публикации

Spindle motor

Номер: US20130099625A1

Автор: Jin San Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is a spindle motor including: a shaft forming a rotation center of the motor; a sleeve receiving the shaft therein and rotatably supporting the shaft; a thrust plate protruding in a direction vertical to an axial direction of the shaft and coupled to an upper end portion of the sleeve in the axial direction; and a stopper including a first plate covering an upper end surface of the thrust plate in the axial direction and a second plate bent from one side end of the first plate in a downward axial direction. According to a preferred embodiment of the present invention, a bent stopper is coupled to one side end of a thrust plate of the spindle motor using a fluid dynamic pressure bearing, thereby making it possible to secure a double or more storage space of oil which is an operating fluid.

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Номер записи: 40

25-04-2013 дата публикации

Method for increasing rotation speed of spindle motor

Номер: US20130099713A1

Автор: Miller Yang, Sheng-Wen Chiu, Shih-Jung Huang, Tsung-Ming Huang

Принадлежит: Quanta Storage Inc

A method is disclosed to increase a rotation speed of a spindle motor, which comprises: setting a predetermined rotation speed; increasing the rotation speed of the spindle motor to the predetermined rotation speed; recording a critical rotation speed of the spindle motor; decreasing the rotation speed of the spindle motor to the critical rotation speed and remaining at the critical rotation speed for a predetermined time; and increasing the rotation speed of the spindle motor to the working rotation speed for eliminating vibration noise.

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Номер записи: 41

02-05-2013 дата публикации

Spindle motor

Номер: US20130106225A1

Автор: Yeol Choi

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including: a holder having a motor shaft system mounted thereon and including a stator providing rotational driving force to a rotating member; a first pulling magnet mounted on an upper portion of an outer edge of the stator in a radial direction; and a second pulling magnet mounted on a lower portion of the rotating member and preventing excessive floating of the rotating member due to attractive force between the first and second pulling magnets.

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Номер записи: 42

09-05-2013 дата публикации

Spindle motor and method of manufacturing the same

Номер: US20130113314A1

Автор: Tae Hyeong Lim

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including: a base member having a through-hole formed therein; a circuit board installed on a lower surface of the base member and including a communication hole formed therein to correspond to the through-hole; an insulating member insertedly disposed in the through-hole and having a lead part of a coil penetrating therethrough; and a sealing member filling a space formed by the insulating member insertedly disposed in the through-hole and the base member to thereby close the through-hole.

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Номер записи: 43

09-05-2013 дата публикации

Bearing assembly and motor including the same

Номер: US20130113315A1

Автор: Han Byul Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a bearing assembly including: a sleeve supporting a shaft; a base cover coupled to the sleeve by press-fitting and closing a lower portion of the sleeve; and at least one deformation prevention part formed to be depressed from an outer peripheral surface of the base cover in an inner diameter direction and preventing deformation of the base cover when the base cover is press-fitted into the sleeve.

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Номер записи: 44

23-05-2013 дата публикации

Hydrodynamic bearing assembly and motor including the same

Номер: US20130127273A1

Автор: Ta Kyoung Lee

Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a hydrodynamic bearing assembly and a motor including the same. The hydrodynamic bearing assembly includes: a sleeve having a shaft hole into which a shaft is rotatably inserted; and a hub fixed to an upper end of the shaft and extended in an outer radial direction, wherein an upper surface of the sleeve and a lower surface of the hub have an oil interface formed therebetween to seal oil.

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Номер записи: 45

23-05-2013 дата публикации

SPINDLE MOTOR AND STORAGE DISK DRIVE

Номер: US20130128379A1

Автор: HORIKI Shigeki, MIURA Kazushi, MIZUKAMI Junya, OE Takayuki, SABASHI Naoki, SATO Kazuhiro, SEKII Yoichi, TAKEMOTO Mitsuhiro, TAMAOKA Takehito, Yamamoto Takashi

Принадлежит: NIDEC CORPORATION

A motor includes a stationary portion and a rotating portion. The stationary portion includes a shaft portion and an upper thrust portion. The upper thrust portion includes a tubular first outer circumferential surface arranged radially outside the upper thrust portion, and a tubular second outer circumferential surface arranged above the first outer circumferential surface. The rotating portion includes a sleeve portion, a tubular portion, and an annular cover portion. The annular cover portion includes a plate portion and an inner annular projecting portion arranged to project upward or downward. An inner circumferential surface of the inner annular projecting portion is arranged above an inner circumferential surface of the tubular portion. An upper seal portion includes a surface of a lubricating oil located therein. The inner circumferential surface of the inner annular projecting portion and the second outer circumferential surface are arranged opposite to each other with an axially extending gap therebetween. 1. A motor comprising:a stationary portion including a stator; anda rotating portion including a rotor magnet, and rotatably supported by the stationary portion through a lubricating oil; wherein a shaft portion centered on a central axis extending in a vertical direction; and', 'an upper thrust portion arranged to extend radially outward from an upper portion of the shaft portion;, 'the stationary portion includes a tubular first outer circumferential surface arranged radially outside the upper thrust portion; and', 'a tubular second outer circumferential surface arranged above the first outer circumferential surface;, 'the upper thrust portion includes a sleeve portion arranged opposite to an outer circumferential surface of the shaft portion and a lower surface of the upper thrust portion;', 'a tubular portion arranged to extend upward from an outer edge portion of the sleeve portion, and arranged opposite to an outer circumferential surface of the ...

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Номер записи: 46

30-05-2013 дата публикации

Spindle motor and method of manufacturing the same

Номер: US20130134812A1

Автор: Young Ha Park

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including: a shaft connected directly or indirectly to a base member and having a depression groove formed in a central portion of an outer peripheral surface thereof; a sleeve rotatably installed on the shaft and having a communication hole formed so as to be connected to the depression groove; and a rotor hub fixedly installed on the sleeve to thereby rotate together therewith, wherein the communication hole is inclined so that lubricating fluid may be easily injected into the depression groove, and the sleeve has a fluid storage part formed on an outer peripheral surface thereof, the fluid storage part being connected to the communication hole and temporarily storing the lubricating fluid therein.

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Номер записи: 47

30-05-2013 дата публикации

Automatic Unthread and Store of Data Storage Device Medium

Номер: US20130135773A1

Автор: Arturo A. Mojica

Принадлежит: International Business Machines Corp

An apparatus, system, and method for automatic unthreading and storage of storage media helps prevent damage to the media, which can otherwise occur when the storage media is left threaded in a storage media drive over an extended period or under adverse conditions. A sensing device may generate a signal or a detector may receive a signal indicating that a predetermined period of time has lapsed or that some other criteria has been met indicating that the storage media should be removed from the storage media drive. An unthread module in the storage media drive receives the signal and automatically unthreads and stores the storage media. A location on the storage media can be marked by the unthread module prior to unthreading such that the media may be returned to the location upon rethreading.

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Номер записи: 48

30-05-2013 дата публикации

Trajectory control device

Номер: US20130138236A1

Автор: Kotaro Nagaoka

Принадлежит: Mitsubishi Electric Corp

A trajectory control device controlling a trajectory of a movable portion includes a servo-system response-trajectory calculation unit that computes a servo-system response trajectory based on a position command of each movable axis, a shape-feature determination unit that outputs a shape feature amount including information of a position of a boundary point in a path shape and a running direction near the boundary point based on a determination from the position command whether the shape of the commanded path is straight or curved line, a position-vector correction unit that corrects a position vector based on the position command, the servo-system response trajectory and the shape feature amount, and outputs a corrected position command, and servo control units that control a motor of each movable axis by outputting a motor drive torque so that a position of each movable axis follows the corrected position command.

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Номер записи: 49

06-06-2013 дата публикации

Spindle motor

Номер: US20130140942A1

Автор: Jong Ryeol Oh, Suk Ju Hong, Tae Jun Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including: a shaft rotatably supported by a sleeve; and a rotor hub fixedly installed on an upper end portion of the shaft, wherein the shaft includes a burr generation suppression part formed at the upper end portion thereof in order to suppress burr generation in an inner peripheral surface of the rotor hub in the case in which the rotor hub is press-fitted to the shaft.

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Номер записи: 50

06-06-2013 дата публикации

SPINDLE MOTOR

Номер: US20130140962A1

Автор: KIM Pyo, RHEE Dong Woo, Shin Kyung Seob, Yoo Young Sun

Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

Disclosed herein is a spindle motor including: a shaft; a rotor case coupled to the shaft to rotate integrally with the shaft and including a rotor magnet coupled to an inner portion thereof; a base plate to which the shaft is rotatably coupled; a bearing coupled to an outer peripheral surface of the shaft to rotatably support the shaft; a bearing holder coupled to an outer peripheral surface of the bearing to support the bearing and fixedly coupled to an upper portion of the base plate; and a stator core part coupled to an outer peripheral surface of the bearing holder so as to face the rotor magnet, wherein the bearing has a length of an inner peripheral surface contacting the shaft longer than a length of an outer peripheral surface contacting the bearing holder. 1. A spindle motor comprising:a shaft;a rotor case coupled to the shaft to rotate integrally with the shaft and including a rotor magnet coupled to an inner portion thereof;a base plate to which the shaft is rotatably coupled;a bearing coupled to an outer peripheral surface of the shaft to rotatably support the shaft;a bearing holder coupled to an outer peripheral surface of the bearing to support the bearing and fixedly coupled to an upper portion of the base plate; anda stator core part coupled to an outer peripheral surface of the bearing holder so as to face the rotor magnet,wherein the bearing has a length of an inner peripheral surface contacting the shaft longer than a length of an outer peripheral surface contacting the bearing holder.2. The spindle motor as set forth in claim 1 , wherein the bearing includes a cutting part formed at the outer peripheral surface facing an upper surface of the inner portion of the rotor case claim 1 , and the length of the inner peripheral surface of the bearing is longer than the length of the outer peripheral surface thereof.3. The spindle motor as set forth in claim 2 , wherein the cutting part has an oblique line shape having a gradient in which the cutting ...

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Номер записи: 51

13-06-2013 дата публикации

DISK DRIVE DEVICE WITH HUB

Номер: US20130148241A1

Автор: IWAI Hiroshi, Tashiro Tomoyuki, Watanabe Takanori

Принадлежит: ALPHANA TECHNOLOGY CO., LTD.

The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion. 1. A disk drive device comprising:a base member;a hub;a clamper including an end that defines a central hole and configured to fix a recording disk to the hub radially outside of the end that defines the central hole;a bearing unit which is arranged on the base member and which rotatably supports the hub; anda spindle drive unit, which drives the hub to rotate, wherein the spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole, and a magnet configured with an outer diameter portion and a portion that is opposite to the salient pole,wherein the hub is formed of a magnetic material,wherein the base member includes a wire hole through which a wire for forming the coil passes, and a concavity that is formed at a bottom surface of the base member, at least a part of the concavity being arranged at a position that is radially outside of the outer diameter portion of the magnet, andwherein the wire passes through the wire hole and is connected to a wiring member at the concavity at the bottom surface of the base member.2. The disk drive device according to claim 1 ,wherein the fitting portion is provided with an annular step and is located radially inward from the coil.3. The disk drive device according to claim 1 ,wherein the end that defines the central hole is provided at a ...

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Номер записи: 52

13-06-2013 дата публикации

Optical information storage medium reproduction apparatus and control method of the same

Номер: US20130148486A1

Автор: Go Mori, Hideharu Tajima, Hirohisa Yamada, Masaki Yamamoto, Shigemi Maeda, Yasuhiro Harada, Yoshiteru Murakami

Принадлежит: Sharp Corp

In an optical information storage medium reproduction apparatus ( 10 ) for reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power for reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power for reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus ( 10 ) requires. With the arrangement, it is possible to prevent that the information recording layer closest to the reproduction-laser-incident surface is irradiated wrongly with reproduction laser having high reproduction laser power, thereby making it possible to obtain successful reproduction quality. That is, it is possible to realize the optical information storage medium reproduction apparatus ( 10 ) that can set optimum reproduction laser power and perform stable super resolution reproduction.

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Номер записи: 53

27-06-2013 дата публикации

Spindle motor

Номер: US20130162079A1

Автор: Yeol Choi, Young Sun Yoo, Yun Yeong Park

Принадлежит: Samsung Electro Mechanics Co Ltd

Disclosed herein is a spindle motor. In the spindle motor according to the present invention, a thrust part is disposed at a lower portion of a shaft, and a support part surface-contacting a lower end of the shaft is formed at the thrust part so as to have a round shape, thereby making it possible to easily prevent a wobble phenomenon of a rotor due to a gap in a shaft system. In addition, a guide part is formed to be protruded at the thrust part to lock the shaft including a narrow part formed therein, thereby making it possible to easily prevent floating of the rotor.

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Номер записи: 54

27-06-2013 дата публикации

Hydrodynamic bearing assembly and spindle motor including the same

Номер: US20130162080A1

Автор: Chang Jo Yu

Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a hydrodynamic bearing assembly and a motor including the same. The hydrodynamic bearing assembly includes: a sleeve supporting a shaft and forming a bearing clearance filled with a lubricating fluid; a housing enclosing an outer peripheral surface of the sleeve and including a flange part formed in an upper end portion thereof and extended outwardly; a rotor hub coupled to an upper end portion of the shaft and including an extension wall part extended to be disposed outwardly of the housing; a stopper member fixed to the extension wall part while being disposed under the flange part of the housing, and forming, together with an outer peripheral surface of the housing, a space in which a liquid-vapor interface is formed; and a cover member coupled to a lower end portion of the housing. The sleeve and the housing include first and second circulation holes formed therebetween.

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Номер записи: 55

27-06-2013 дата публикации

Adhesive resin composition for hdd motor and hdd motor fabricated using the same

Номер: US20130165551A1

Автор: Hyung Kyu Kim, Kun Kim

Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided an adhesive resin composition for a HDD motor and a HDD motor fabricated using the same. The adhesive resin composition for a HDD motor includes: 25 to 35 parts by weight of a bisphenol E-epoxy resin; 10 to 25 parts by weight of an epoxy resin; 10 to 20 parts by weight of mercaptan; and 5 to 15 parts by weight of imidazole. The constituents of an epoxy adhesive material may be controlled, such that a curing speed may be increased, as compared to the case of the related art, thereby enhancing working efficiency and reliability.

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Номер записи: 56

04-07-2013 дата публикации

Reliability-Aware Disk Power Management

Номер: US20130170067A1

Автор: Carter John B., Felter Wesley M., Hylick Anthony N.

Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

A token value is maintained based on an allowable number of low power transitions of a hard disk drive without adversely affecting reliability, compared to an actual number of low power transitions of said hard disk drive. The allowable number of low power transitions increases over the hard disk drive's lifetime. Before the hard disk drive performs a low power transition, the token is evaluated to determine if the hard disk drive is allowed to perform a low power transition. Low power transitions discussed include parking the head and spinning-down the hard disk drive. 1. A data storage device comprising:a rotatable storage medium;a motor capable of spinning the rotatable storage medium; anda disk controller capable of controlling said motor and comprising a token storage element and a control interface, wherein the disk controller is configured to:increment a value stored in the token storage element at intervals of time; andprovide said value stored in the token storage element through the control interface in response to a request for said value of the token storage element.2. The data storage device of claim 1 , wherein the disk controller is further configured to:receive a request over the control interface to put the data storage device into a low power state; and decrement said value stored in the token storage element, and', 'put the data storage device into the low power state., 'if said value stored in the token storage element is greater than a predetermined value,'}3. The data storage device of claim 2 , wherein the disk controller is further configured to:wait for said value stored in token storage element to be greater than said predetermined value before putting the data storage device into the low power state.4. The data storage device of claim 1 , wherein the disk controller is further configured to:measure an elapsed time since a last disk access command was received over the control interface; decrement said value stored in the token storage ...

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Номер записи: 57

04-07-2013 дата публикации

Systems and Methods for Decimation Based Over-Current Control

Номер: US20130173932A1

Автор: Fan Zhang, Haitao Xia, Shaohua Yang, YANG Han, Zongwang Li

Принадлежит: LSI Corp

The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for power governance in a data processing system. In some such systems and methods, the operation of one or more calibration circuits is modified when it is determined that too many data processing circuits are active.

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Номер записи: 58

04-07-2013 дата публикации

Systems and Methods for Networked Music Playback

Номер: US20130174204A1

Автор: Arthur Coburn, IV, Joni Hoadley

Принадлежит: Individual

Systems, methods, apparatus, and articles of manufacture to facilitate connection to a multimedia playback network are disclosed. An example method provides content to a local playback network. The example method includes identifying multimedia content from a content provider. The example method includes passing information regarding the multimedia content to a local playback system including one or more multimedia playback devices in response to a trigger. The example method includes facilitating play of the multimedia content via a local playback network associated with the local playback system.

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Номер записи: 59

11-07-2013 дата публикации

TAPE STORAGE DEVICE

Номер: US20130176641A1

Автор: Nohta Takeshi, Tosaka Eiji

Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

A method, and tape storage device configured to perform such method, according to various embodiments, includes writing data stored in a buffer onto a tape; writing an interval marker on the tape after the data stored in the buffer is written onto the tape; writing next data subsequent to the interval marker when the next data is stored in the buffer in a first round corresponding to a first-time write in a single track in the tape; writing data stored in the buffer in an area of the interval marker in a second round corresponding to a second-time write in the single track; and writing data stored in the buffer in an area of the interval marker in which no data is written in each of third and subsequent rounds corresponding to third- and subsequent-time writes in the single track. 1. A device comprising: (i) writing data stored in a buffer, subsequently writing an interval marker without interruption after the buffer is empty of the stored data, and writing next data subsequently to the interval marker when the next data is stored in the buffer in a first round corresponding to a first-time write in a single track in a tape,', '(ii) writing data stored in the buffer in an area of the interval marker in a second round corresponding to a second-time write in the single track, and', '(iii) writing data stored in the buffer in the area in which no data is written of the interval marker in each of third and subsequent rounds corresponding to third- and subsequent-time writes in the single track., 'a controller configured to perform control for2. The device according to claim 1 , wherein the controller performs control for writing the data stored in the buffer in the area of the interval marker when a data fill ratio for the single track does not exceed a predetermined value claim 1 , wherein the data fill ratio refers to an amount of written data on the single track divided by a capacity of the single track.3. The device according to claim 2 , wherein the controller ...

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Номер записи: 60

11-07-2013 дата публикации

SELECTIVELY LOWERING RESISTANCE OF A CONSTANTLY USED PROTION OF MOTOR WINDINGS IN DISK DRIVE

Номер: US20130176642A1

Автор: BATES Allen K., BUI Nhan X., HANCOCK REED A., Winarski Daniel J.

Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

Dynamic reconfiguration-switching of motor windings in a disk drive is optimized between winding-configurations by selectively lowering resistance of a constantly used portion of one of the motor windings. Acceleration is traded off in favor of higher velocity upon detecting the electric motor in the electric vehicle is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant. The total back electromotive force (BEMF) is prohibited from inhibiting further acceleration to a higher angular-velocity. 1. A method for switching motor windings within a disk drive using a processor device , the method comprising:optimizing a dynamic reconfiguration-switching of a plurality of motor windings between a plurality of winding-configurations by selectively lowering resistance of a constantly used portion of one of the plurality of motor windings for trading off acceleration in favor of higher velocity upon detecting the disk drive is at an optimal angular-velocity for switching to an optimal lower torque constant and voltage constant thereby preventing a total back electromotive force (BEMF) from inhibiting further acceleration to a higher angular-velocity.2. The method of claim 1 , further including performing the dynamic reconfiguration-switching between the plurality of motor windings using one of a wye connection and a delta connection system for the disk drive.3. The method of claim 1 , further including performing the dynamic reconfiguration-switching between the plurality of winding-configurations in a successive order when a velocity sensor detects the disk drive is at the optimal angular-velocity for switching the torque constant and the voltage constant.4. The method of claim 1 , further including trading off angular-acceleration for a greater angular-velocity as speed of the disk drive is increased whereby the torque constant claim 1 , the voltage constant claim 1 , and the angular-acceleration correspondingly decrease.5. ...

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Номер записи: 61

01-08-2013 дата публикации

SPINDLE MOTOR AND DISC DRIVE DEVICE

Номер: US20130193815A1

Автор: NISHIDATE Masahiro

Принадлежит:

A spindle motor comprises a turntable, on which a disc is loaded, and a motor which rotates the turntable, wherein a top face plate of a magnetic body rotor case, which rotates united with a rotational shaft of the motor, serves as the turntable. A centering member that guides the inner edge of the disc so as to be concentric with the rotational shaft is disposed on the top face plate of the rotor case and a clamping magnet is disposed in a through-opening on the interior of the centering member and is in contact with the top face plate of the rotor case. 1. A spindle motor comprising a turntable on which a disc is loaded , a motor which rotates said turntable , wherein a top face plate of a magnetic body rotor case , which rotates united with a rotational shaft of said motor , serves as said turntable , a centering member that guides an inner edge of the disc so as to be concentric with said rotational shaft is disposed on a top face plate of said rotor case , and a clamping magnet disposed in a through-opening on an interior of said centering member and is in contact with the top face plate of said rotor case.2. The spindle motor recited in claim 1 , wherein said clamping magnet comprises an annular magnet and is disposed concentrically with said rotational shaft.3. The spindle motor recited in claim 2 , wherein the inner circumference of said centering member is in contact with the outer circumference of said clamping magnet.4. The spindle motor recited in claim 3 , wherein said rotational shaft has a protruding portion that protrudes from the top face plate of said rotor case claim 3 , a cylinder member is fixed around said protruding portion claim 3 , and the inner circumference of said clamping magnet is in contact with the outer circumference of said cylinder member claim 3 , and the clamping magnet is disposed concentrically with said rotational shaft.5. The spindle motor recited in claim 4 , wherein said cylinder member has a flange that protrudes radially ...

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Номер записи: 62

01-08-2013 дата публикации

Motor and disk drive apparatus

Номер: US20130194701A1

Автор: Kazuhiko Fukushima

Принадлежит: Nidec Corp

A spindle motor, which is for use in a disk drive apparatus which includes a housing including a base member and a cover member, includes a stationary portion and a rotating portion. The stationary portion includes a stationary shaft and the base member. The rotating portion includes a sleeve portion. The stationary shaft is inserted into the bearing hole. The stationary shaft includes an annular surface arranged to come into direct or indirect contact with the cover member, the annular surface being located higher than the sleeve portion and extending in a circumferential direction, and an upper protrusion arranged to be fixed to a cover inner circumferential surface defining a cover penetrating hole of the cover member, the upper protrusion protruding upward from the radial inner side of the annular surface. The base member includes a fixing portion arranged to directly or indirectly fix the cover member.

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Номер записи: 63

01-08-2013 дата публикации

ELECTRONIC DEVICE AND AUDIO OUTPUT METHOD

Номер: US20130194903A1

Автор: Watabe Kazuo

Принадлежит:

According to one embodiment, electronic device including, turntable configured to rotate recording medium including recording layer along plane on which surface of recording layer extends, servo data providing mechanism configured to provide on surface of turntable facing recording layer of recording medium and provides servo data used for recording of data on recoding medium or reproduction of data from recording medium, and recording and reproduction module configured to irradiate recording layer of recording medium with light having first wavelength and light having second wavelength different from light having first wavelength from opposite side of recording medium with respect to turntable. 1. An electronic device comprising:a turntable configured to rotate a recording medium including a recording layer along a plane on which a surface of the recording layer extends;a servo data providing mechanism configured to provide on a surface of the turntable facing the recording layer of the recording medium and provides servo data used for recording of data on the recoding medium or reproduction of data from the recording medium; anda recording and reproduction module configured to irradiate the recording layer of the recording medium with light having a first wavelength and light having a second wavelength different from the light having the first wavelength from the opposite side of the recording medium with respect to the turntable.2. The electronic device of claim 1 , wherein one of the light having the first wavelength and the line having the second wavelength is focused onto the servo data providing mechanism.3. The electronic device of claim 2 , wherein the other of the light having the first wavelength and the light having the second wavelength is focused onto the recording layer of the recording medium.4. The electronic device of claim 1 , wherein the recording and reproduction unit further comprises a first lens which focuses one of the light having the first ...

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Номер записи: 64

01-08-2013 дата публикации

ROTATING DEVICE

Номер: US20130194907A1

Автор: HAYASHI Daiki, KODAMA Mitsuo, Watanabe Takanori, YAMADA Takuji

Принадлежит: ALPHANA TECHNOLOGY CO., LTD.

A rotating device includes: a hub that is rotatably supported by a base, on which a recording disk is to be mounted; a stator core fixed to the base, the core having a ring portion and multiple salient poles that radially extend from the ring portion; and a magnet fixed to the hub, the magnet having multiple magnetic poles arranged along its circumference on its side surface on the salient pole side. The magnet is arranged such that its side surface on the salient pole side faces a side surface of each salient pole and a side surface of a portion of the hub that faces the stator core along a rotational axis direction. 1. A rotating device comprising:a hub that is rotatably supported by a base, on which a recording disk is to be mounted;a core fixed to the base, the core having a ring portion and multiple salient poles that radially extend from the ring portion; anda magnet fixed to the hub, the magnet having multiple magnetic poles arranged along its circumference on its side surface on the salient pole side,wherein the magnet is arranged such that its side surface on the salient pole side faces a side surface of each salient pole and a side surface of a portion of the hub that faces the core along a rotational axis direction.2. The rotating device according to claim 1 , further comprising a yoke configured to support the magnet claim 1 ,wherein the yoke has a cylindrical portion that extends along the rotational axis and a flange portion provided to a end portion of the cylindrical portion on the hub side such that it extends inward along the radial direction,and wherein the hub side surface of the flange portion is in contact with the hub, and the base side surface of the flange portion faces the end surface of the magnet, with a gap between the flange portion and the magnet.3. The rotating device according to claim 1 , wherein the end surface of the magnet on the hub side is in contact with the hub.4. The rotating device according to claim 1 , wherein at least ...

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Номер записи: 65

08-08-2013 дата публикации

SPINDLE MOTOR HAVING MAGNETIC CIRCUIT FOR STATOR AND ROTOR MAGNET, AND STORAGE DISK DRIVE HAVING THE SAME

Номер: US20130201811A1

Автор: Abe Hiroyuki, TAMAOKA Takehito

Принадлежит: NIDEC CORPORATION

A spindle motor includes a base portion; a stator arranged above the base portion; a rotor hub including a cover portion positioned above the stator, and a side wall portion arranged to extend downward from an outer edge of the cover portion; a rotor magnet positioned radially outward of the stator, and fixed to an inner circumferential surface of the side wall portion of the rotor hub; and a bearing mechanism arranged to support the rotor hub and the rotor magnet to be rotatable. A height of the rotor magnet as measured in an axial direction is preferably in a range of about 2 mm to about 3 mm (both inclusive), and a height of a stator core of the stator as measured in the axial direction is preferably in a range of about 50% to about 75% (both inclusive) of the height of the rotor magnet. 1. A spindle motor for use in a disk drive apparatus , the spindle motor comprising:a base portion;a stator arranged above the base portion;a rotor hub including a cover portion positioned above the stator, and a side wall portion arranged to extend downward from an outer edge of the cover portion;a rotor magnet positioned radially outward of the stator, and fixed to an inner circumferential surface of the side wall portion of the rotor hub; anda bearing mechanism arranged to support the rotor hub and the rotor magnet such that the rotor hub and the rotor magnet are rotatable with respect to the base portion and the stator; whereina height of the rotor magnet as measured in an axial direction is in a range of about 2 mm to about 3 mm, both inclusive, and a height of a stator core of the stator as measured in the axial direction is in a range of about 50% to about 75%, both inclusive, of the height of the rotor magnet; anda torque constant of a torque produced between the stator and the rotor magnet is in a range of about 3 mNm/A to about 5 mNm/A, both inclusive.2. The spindle motor for use in the disk drive apparatus according to claim 1 , whereinthe stator core is defined by ...

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Номер записи: 66

22-08-2013 дата публикации

DISK DRIVE DEVICE PROVIDED WITH LUBRICANT-FILLED FLUID DYNAMIC BEARING

Номер: US20130215533A1

Автор: KODAMA Mitsuo, KUROKAWA Yoshio

Принадлежит: SAMSUNG ELECTRO-MECHANICS JAPAN ADVANCED TECHNOLOGY CO., LTD.

In a disk drive device, a hub has an outer circumferential wall portion configured to hold a recording disk. A base member has a cylindrical portion, whose central axis is the rotation axis of the hub, on a surface on the side of the hub. A fluid dynamic bearing holds a lubricant and rotatably supports the hub relative to the base member. A ring-shaped attraction plate including a magnetic material is fixed to the base member and faces a magnet in the axial direction. The outer circumferential wall portion is configured such that the outer circumferential wall portion surrounds the attraction plate and that the range of the outer circumferential wall portion in the axial direction overlaps with the range of the attraction plate in the axial direction. 1. disk drive device comprising:a hub having an outer circumferential wall portion configured to hold a recording disk;a base member having a cylindrical portion, whose central axis is a rotation axis of the hub, on a surface on the side of the hub;a fluid dynamic bearing configured to hold a lubricant and rotatably support the hub relative to the base member;a stator core having a ring portion fixed on an outer circumferential surface of the cylindrical portion and a plurality of salient poles extending in the radial direction from the ring portion; anda magnet fixed to an inner circumferential surface of the outer circumferential wall portion, the magnet being arranged to radially face the plurality of salient poles and provided along the circumferential direction with a plurality of magnetized poles for driving, whereinthe fluid dynamic bearing has a boundary surface between the lubricant and air in an area formed between the base member and the hub,an opening of the cylindrical portion is provided on the outside of the boundary surface in the radial direction,the hub has a cylindrical hanging portion that faces the opening in the radial direction and forms a narrow gap portion with the opening,a dimension of the ...

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Номер записи: 67

12-09-2013 дата публикации

ROTATING DEVICE, MANUFACTURING METHOD THEREOF AND BEARING COMPONENT

Номер: US20130235489A1

Автор: AOSHIMA Hisayuki

Принадлежит: ALPHANA TECHNOLOGY CO., LTD.

An example rotating device is a disk drive device that includes a base, a hub on which a recording disk is to be mounted and which rotates relative to the base, and a fluid dynamic bearing unit that allows the hub to rotate relative to the base. The fluid dynamic bearing unit includes a shaft that performs relative rotation and a cylindrical member that encircles the shaft, the cylindrical member includes a thrust dynamic pressure generating groove which is provided in one end face of the cylindrical member and which generates thrust dynamic pressure, and the thrust dynamic pressure generating groove includes a cut-and-machined face. 1. A bearing component comprising:a cylindrical member comprising a thrust dynamic pressure generating groove which is provided in one end face of the cylindrical member and which generates thrust dynamic pressure, andthe thrust dynamic pressure generating groove comprising a cut-and-machined face.2. The bearing component according to claim 1 , whereinthe cylindrical member further comprises a radial dynamic pressure generating groove which is provided in an inner circumferential surface of the cylindrical member and which generates radial dynamic pressure, andthe radial dynamic pressure generating groove is formed as a set of intermittent recesses.3. The bearing component according to claim 1 , whereinthe thrust dynamic pressure generating groove is a set of intermittent recesses formed intermittently continuous from one another along a spiral line that gradually increases a radius for each turn from an inner circumference to an outer circumference, andthe adjoining intermittent recesses are disposed so as to partially overlap in a radial direction.4. The bearing component according to claim 3 , wherein the intermittent recesses are disposed from the inner circumference toward the outer circumference by equal to or greater than 10 turns and equal to or less than 2000 turns.5. The bearing component according to claim 1 , further ...

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Номер записи: 68

12-09-2013 дата публикации

MOTOR HAVING A DISK SUPPORT MEMBER AND A DISK DRIVE DEVICE HAVING THE SAME

Номер: US20130239131A1

Автор: KANG Dae Lyun, LEE Sang Kyu, SMIRNOV Viatcheslav

Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

A motor including: a rotor case having a chucking device, on which a disk is mounted, press-fitted and coupled thereto; disk support members mounted on an upper surface of the rotor case to support a bottom surface of the disk, and having each of flow path portions therebetween allowing for airflow in a space between the disk and the rotor case; and a push portion disposed in at least one of the rotor case and the disk support members to accelerate the airflow through the flow path portions when the rotor case rotates. 1. A motor comprising:a rotor case having a chucking device, on which a disk is mounted, press-fitted and coupled thereto;disk support members mounted on an upper surface of the rotor case to support a bottom surface of the disk, and having each of flow path portions therebetween allowing for airflow in a space between the disk and the rotor case; anda push portion disposed in at least one of the rotor case and the disk support members to accelerate the airflow through the flow path portions when the rotor case rotates.2. The motor of claim 1 , wherein the plurality of recesses of the push portion are disposed inwardly of the disk support members in a radial direction while being individually disposed between the flow path portions spaced apart from each other.3. The motor of claim 1 , wherein the push portion comprises a first push portion disposed in the upper surface of the rotor case and a second push portion disposed in at least one of an inner circumferential surface and an outer circumferential surface of a corresponding one of the disk support members.4. The motor of claim 3 , wherein the first push portion comprises a plurality of recesses spaced apart from each other in the upper surface of the rotor case in the circumferential direction thereof claim 3 , andthe second push portion comprises a concave recess disposed in the outer circumferential surface of the corresponding disk support member.5. The motor of claim 3 , wherein the first push ...

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Номер записи: 69

19-09-2013 дата публикации

MOTOR AND DISK DRIVE APPARATUS

Номер: US20130242429A1

Автор: IGUCHI Takuro, IWASAKI Shuji, Miyajima Kazuto, Nishimura Hideki, SATO Kazuhiro, SEKII Yoichi, Shuto Takeyuki, TAMAOKA Takehito

Принадлежит: NIDEC CORPORATION

A motor includes a shaft component including an inner shaft portion and an outer shaft portion. A radial gap is defined between a sleeve portion and the outer shaft portion. A radial dynamic pressure generating groove array is arranged on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper and lower radial dynamic pressure generating groove array. The inner shaft portion is fixed to the outer shaft portion in an interference fit. An axial range of a fixing region of the inner shaft portion and the outer shaft portion which is in the interference fit is included in a range between the upper and lower radial dynamic pressure generating groove array. 1. A motor comprising:a rotating portion including a rotor magnet; anda stationary portion including a stator facing the rotor magnet; wherein a shaft component including an inner shaft portion arranged around a central axis and an outer shaft portion fixed to an outer circumferential surface of the inner shaft portion;', 'an upper plate portion defining a single monolithic member together with one of the inner shaft portion and the outer shaft portion and extending radially outward from an upper portion of the one of the inner shaft portion and the outer shaft portion; and', 'a lower plate portion defining a single monolithic member together with the other of the inner shaft portion and the outer shaft portion and extending radially outward from a lower portion of the other of the inner shaft portion and the outer shaft portion;, 'the stationary portion includesthe rotating portion includes a sleeve portion which is disposed between the upper plate portion and the lower plate portion;a lubricating oil is continuously present between an upper thrust gap between the sleeve portion and the upper plate portion, a radial gap between the ...

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Номер записи: 70

19-09-2013 дата публикации

FLUID DYNAMIC BEARING UNIT AND DISK DRIVE DEVICE INCLUDING THE SAME

Номер: US20130242433A1

Автор: SUGIKI Ryusuke

Принадлежит: SAMSUNG ELECTRO-MECHANICS JAPAN ADVANCED TECHNOLOGY CO., LTD.

A first sleeve rotatably extends around a shaft. First and second flanges are fixed to the shaft. A second sleeve extending around the first sleeve is fixed thereto. A first annular member fixed to the second sleeve surrounds the first flange. A second annular member fixed to the second flange surrounds a portion of the second sleeve. A first capillary seal includes a clearance between the first flange and the first annular member. A second capillary seal includes a clearance between the second annular member and the second sleeve. Lubricant is provided in the clearances in the first and second capillary seals. The second annular member and the second sleeve are designed so that the lubricant in the clearance in the second capillary seal can be viewed from a point in a radial position which is outward of the second sleeve as seen in an axial direction. 122-. (canceled)23. A disk drive device comprising:a base;a top cover fixed to the base;a rotator that rotates between the base and the top cover;a sleeve which has a plated surface and which rotates together with the rotator;a shaft assembly comprising a shaft retained in the sleeve in a freely rotatable manner relative to the sleeve, a first flange fixed to the shaft at a location facing with a first end surface of the sleeve with a clearance, and a second flange including an opposed surface facing with a second end surface of the sleeve with a clearance, one end of the shaft assembly being fixed to the base, and another end of the shaft assembly being provided to the top cover in a fixed manner;a first annular member which rotates together with the rotator and which surrounds an outer circumferential surface of the first flange;a second annular member which is provided to the second flange in a fixed manner and which surrounds at least a part of an outer circumferential surface of the sleeve;a radial dynamic pressure groove that is provided in at least one of an outer circumferential surface of the shaft and an ...

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Номер записи: 71

19-09-2013 дата публикации

Fluid dynamic bearing apparatus, spindle motor, and disk drive apparatus

Номер: US20130243356A1

Автор: Hiroki Yamada, Junya Mizukami, Takuro Iguchi, Tetsuya Maruyama, Timothy Edward Langlais, Troy Michael Herndon, Tsuyoshi Morita

Принадлежит: Nidec Corp, SEAGATE TECHNOLOGY LLC

A fluid dynamic bearing apparatus includes a first minute gap, a second minute gap, a third minute gap, a fourth minute gap, and a fifth minute gap. A flow of a lubricating oil from the fifth minute gap to the fourth minute gap is caused by a plurality of dynamic pressure generating grooves arranged within the fluid dynamic bearing apparatus. This flow causes air bubbles mixed in the lubricating oil within the fifth minute gap to flow toward the third minute gap and be discharged to an outside through the third minute gap. The fluid dynamic bearing apparatus further includes a plurality of dynamic pressure generating grooves and an all around groove.

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Номер записи: 72

26-09-2013 дата публикации

Magnetic recording disk drive with three sensors for rotational and linear vibration compensation

Номер: US20130250451A1

Автор: Fu-Ying Huang, Xiaotian Sun

Принадлежит: HGST NETHERLANDS BV

A magnetic recording disk drive has three vibration sensors mounted to the disk drive base to provide feedforward vibration compensation signals. First and second spaced-apart sensors are aligned generally parallel to a radius from the disk rotational axis to a head position on the disk between the inside diameter position (h ID ) and outside diameter position (h OD ) for detecting rotational vibration about the disk rotational axis and linear vibration in the cross-track direction. A third vibration sensor is aligned generally orthogonal to the primary axes of the first and second vibration sensors for detecting primarily linear vibrations in the along-the-track or track circumferential direction. The disk drive servo control processor calculates, from the signals from the three sensors, a rotational vibration feedforward signal, a radial linear vibration feedforward signal, and a circumferential linear vibration feedforward signal which are summed with the actuator control signal to compensate for the vibrations.

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Номер записи: 73

26-09-2013 дата публикации

EJECTING MODULE FOR HARD DISK DRIVES

Номер: US20130250746A1

Автор: YANG MENG-LIANG

Принадлежит:

An ejecting module is used in a server and includes a connector, a holder, a hard disk drive, a detecting circuit, a current output circuit, a first electromagnet and a second electromagnet. The hard disk drive is received in the holder. The detecting circuit detects whether the hard disk drive is electronically connected to the connector to output a control signal. The current output circuit receives the control signal and outputs a current. The first electromagnet is adjacent to the connector, and the second electromagnet faces the first electromagnet, the first electromagnet and the second electromagnet being electronically connected to the current output circuit. The current magnetizes the first electromagnet and the second electromagnet, a repulsion force is produced between the first electromagnet and the second electromagnet for moving the second electromagnet from the first electromagnet to be spaced from each other. 1. An ejecting module used in a server , the ejecting module comprising:a connector;a holder;a hard disk drive received in the holder;a detecting circuit for detecting the hard disk drive to not be electronically connected to the connector and outputting a control signal;a current output circuit for receiving the control signal and outputting a current; anda first electromagnet adjacent to the connector and a second electromagnet facing the first electromagnet, the first electromagnet and the second electromagnet being electronically connected to the current output circuit;wherein when the current magnetizes the first electromagnet and the second electromagnet, a repulsion force is produced between the first electromagnet and the second electromagnet for driving the second electromagnet away from the first electromagnet.2. The ejecting module as claimed in claim 1 , further comprising a printed circuit board claim 1 , wherein the detecting circuit is located on the printed circuit board and is electronically connected to a corresponding ...

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Номер записи: 74

26-09-2013 дата публикации

Method and system for displaying a series of recordable events

Номер: US20130251349A1

Автор: Deborah E. Rodgers, Mark D. Goodwin

Принадлежит: DirecTV Group Inc

A method and system for displaying identifiers for one or more series of recordable events is described. A system, such as the system of a digital video recorder, may receive a set of recordable events data, such as a listing of all television shows to be broadcast over a two-week period. The system analyzes the set of recordable events data for determining one or more sets of recordable events, where each set includes recordable events having the same title. The system analyzes each set of recordable events to determine sub-sets of recordable events based on relationships between the recordable events of each sub-set. The system displays an identifier for each sub-set of a given set of recordable events when the given set of recordable events is selected for display. A user may select to record a sub-set of recordable events by selecting the identifier that represents the sub-set.

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Номер записи: 75

03-10-2013 дата публикации

BRUSHLESS MOTOR, DISK DRIVE APPARATUS, AND METHOD OF MANUFACTURING THE BRUSHLESS MOTOR

Номер: US20130258522A1

Автор: Du Hongbing, Enokizono Kazuya, Hashimoto Junichi, Himeno Toshikazu

Принадлежит: NIDEC CORPORATION

A stationary unit of a brushless motor includes a flat armature and a base member arranged to support the armature. The armature includes a power supply portion to which a lead wire is connected. The base member includes a wall portion and a window portion. The wall portion is radially opposed to an outer edge portion of the armature. The window portion is positioned below the power supply portion to axially extend through the base member. An adhesive agent exists between the wall portion and the outer edge portion of the armature. Accordingly, the base member and the armature are strongly fixed to each other. Further, a sealing material is interposed between a whole periphery of an edge of the window portion and the armature, so that the window portion is sealed. (FIG. ) 1. A brushless motor , comprising:a stationary unit; anda rotary unit rotatably supported with respect to the stationary unit,wherein the stationary unit includes a flat armature extending in a direction orthogonal to a vertically-extending center axis and a base member arranged to support the armature,the rotary unit includes a magnet positioned above the armature and a magnetic rotor yoke positioned below the armature,the armature includes a power supply portion to which a lead wire is connected,the base member includes a wall portion radially opposed to an outer edge portion of the armature and a window portion positioned below the power supply portion to axially extend through the base member,an adhesive agent exists between the wall portion and the outer edge portion of the armature, anda sealing material is interposed between a whole periphery of an edge of the window portion and the armature.2. The brushless motor of claim 1 , wherein the rotary unit further includes a hub lying above the armature and extending in a radial direction and a circumferential direction claim 1 , the outer edge portion of the armature being positioned radially outward of an outer edge portion of the hub.3. The ...

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Номер записи: 76

03-10-2013 дата публикации

ELECTRONIC DEVICE WITH SAFETY SHUTDOWN DEVICE

Номер: US20130263164A1

Автор: WANG He-Li, ZHAO TING-TING

Принадлежит:

An electronic device able to read an optical disc includes a base, a cover, a driving unit for rotating and supporting the optical disc, and a shutdown device. The shutdown device is arranged between the base and the cover, and includes a raster sensor and an engaging component. The engaging component is secured to the cover and pivots about the base. When the cover is opened, the engaging component moves away from the raster sensor, the raster sensor emits a first control signal in response, which controls the driving unit to stop rotating. 1. An electronic device reproducing information recorded on an optical disc , comprising:a base;a cover rotatably connected to the base;a driving unit for rotating and supporting the optical disc; and a raster sensor secured to the base; and', 'an engaging component secured to the cover and capable of pivoting about the base when the cover rotates with respect to the base;', 'wherein when the cover is opened, the engaging component moves away from the raster sensor, and the raster sensor emits a first control signal, for controlling the driving unit to stop rotating., 'a shutdown device arranged between the base and the cover, the shutdown device comprising2. The electronic device as claimed in claim 1 , wherein when the cover is closed claim 1 , the engaging component moves toward the raster sensor claim 1 , the raster sensor emits a second control signal claim 1 , for controlling the driving unit to rotating.3. The electronic device as claimed in claim 1 , wherein the cover comprises a hinge component claim 1 , the base comprises a connecting portion engaging with the hinge component for rotatably connecting the cover to the base.4. The electronic device as claimed in claim 3 , wherein the hinge component comprises a first arm and a second arm connected to the first arm; the first arm slantingly projects from the cover claim 3 , the second arm slantingly projects from an end of the first arm opposite to the cover; the engaging ...

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Номер записи: 77

17-10-2013 дата публикации

BASE FOR MOTOR AND HARD DISK DRIVE INCLUDING THE SAME

Номер: US20130271868A1

Автор: Choi Tae Young

Принадлежит: SAMSUNG ELECTRO-MECHANICS CO., LTD.

A base for a motor, the base including: a base body formed by performing press processing on a steel plate, a base material; an outer wall part defining an outer edge of the base body and formed by being bent from an end portion of the base body; and at least one weight reducing part formed by removing a predetermined region of the outer wall part. 1. A base for a motor , the base comprising:a base body formed by performing press processing on a steel plate; andan outer wall part defining an outer edge of the base body and formed by being bent from an end portion of the base body,wherein a part of the outer wall part is removed.2. The base of claim 1 , wherein the outer wall part includes an inner side wall part formed by being bent from the end portion of the base body claim 1 , an upper wall part formed by being bent from an end portion of the inner side wall part claim 1 , and an outer side wall part formed by being bent from an end portion of the upper wall part.3. The base of claim 2 , wherein the removed part of the outer wall part is formed in at least any one of the inner side wall part claim 2 , the upper wall part and the outer side wall part.4. The base of claim 2 , wherein an upper surface of the upper wall part is a flat surface so that a sealing part for sealing from the outside is disposed thereon.5. The base of claim 2 , wherein the upper surface of the upper wall part is provided in parallel with an upper surface of the base body.6. The base of claim 2 , wherein an edge of the upper surface of the upper wall part has a radius of curvature.7. A hard disk drive comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the base for a motor of ;'}a spindle motor coupled to the base for a motor and rotating a disk; anda head driver moving a magnetic head to a predetermined position on the disk, the magnetic head writing data on the disk and reproducing the data stored on the disk.8. The base of claim 2 , wherein the removed part of the outer wall ...

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Номер записи: 78

17-10-2013 дата публикации

SPINDLE MOTOR AND DISK DRIVE APPARATUS

Номер: US20130271870A1

Автор: FUKUHARA Sho, Shimizu Takashi, TAKAYAMA Hirofumi, WATANABE Tsuchitsugu, YOKOSAWA Tomohiro

Принадлежит: NIDEC CORPORATION

In a spindle motor, a cup portion of a base member includes a cylindrical portion and a bottom plate portion. The cylindrical portion is concentric or substantially concentric with a central axis extending in a vertical direction. The bottom plate portion closes a bottom portion of the cylindrical portion. The bearing mechanism is accommodated in the cup portion. An adhesive is arranged between an outer circumferential surface of the bearing mechanism and an inner circumferential surface of the cylindrical portion. At least one of the outer circumferential surface of the bearing mechanism and the inner circumferential surface of the cylindrical portion includes an axially extending vertical groove. A communicating hole which is not filled with the adhesive is arranged in at least a portion of an inside of the vertical groove. The communicating hole extends continuously from an upper to a lower end portion of the vertical groove. 1. A spindle motor comprising:a base member;a bearing mechanism fixed to the base member; and a cylindrical portion arranged to be concentric or substantially concentric with a central axis extending in a vertical direction; and', 'a bottom plate portion defined integrally with the cylindrical portion, and arranged to close a bottom portion of the cylindrical portion;, 'a rotating portion rotatably supported by the bearing mechanism; wherein the base member includes a cup portion includingthe bearing mechanism is accommodated in the cup portion;an adhesive is arranged between an outer circumferential surface of the bearing mechanism and an inner circumferential surface of the cylindrical portion;at least one of the outer circumferential surface of the bearing mechanism and the inner circumferential surface of the cylindrical portion includes an axially extending vertical groove; anda communicating hole which is not filled with the adhesive is arranged in at least a portion of an inside of the vertical groove, the communicating hole extending ...

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Номер записи: 79

24-10-2013 дата публикации

Rotating device and manufacturing method thereof

Номер: US20130279043A1

Автор: Mitsuo Kodama, Shuji TSURUSAKO, Taketo Nonaka

Принадлежит: Samsung Electro Mechanics Japan Advanced Technology Co Ltd

A rotating device includes a shaft body that includes a lower rod and an upper rod formed with a retainer hole encircling a part of the lower rod and fixing the lower rod, a bearing body including a shaft encircling member that encircles the shaft body, and freely rotatable relative to the shaft body, a radial dynamic pressure generating groove which is provided in either one of the shaft body and the bearing body and which generates dynamic pressure in a radial direction, a thrust dynamic pressure generating groove which is provided in either one of the shaft body and the bearing body and which generates dynamic pressure in a thrust direction, and a lubrication medium present in a gap between the shaft body and the bearing body.

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Номер записи: 80

31-10-2013 дата публикации

Method and apparatus for generating personalized media streams

Номер: US20130290843A1

Автор: Antti Johannes Eronen, Arto Juhani Lehtiniemi, Juha Henrik Arrasvuori

Принадлежит: Nokia Oyj

An approach is provided for mixing at least one additional element on top of a media stream. A mix media platform determines at least a first media item for rendering in a first application. The mix media platform next determines one or more interactions with at least one connecting user interface element to associate a first representation of the first media item with a second representation of one or more media sources of a second application. The mix media platform then causes, at least in part, a mixing of the first media item and at least a portion of one or more second media items associated with the one or more media sources to cause, at least in part, a generation of a mix item.

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Номер записи: 81

31-10-2013 дата публикации

Methods and Apparatus to Manage Zones of a Multi-Zone Media Playback System

Номер: US20130290888A1

Автор: Joni R. HOADLEY, Robert M. REIMANN

Принадлежит: Sonos Inc

Methods and apparatus to manage zones of a playback system are disclosed. An example method includes displaying a plurality of zone icons, including a first zone icon and a second zone icon, each of the zone icons representing zone player(s) operable to play back multimedia content in a local area network, wherein the first and second zone icons are currently located in a first zone group region, and wherein the zone players associated with the first and second zone icons are members of a first zone group, the first zone group synchronously playing back a first multimedia content; receiving a first drag and drop input to select the second zone icon and drag the second zone icon from inside the first zone group region to outside the first zone region; and, based on the first drag and drop input, causing the zone player(s) associated with the second zone icon to be disassociated with the first zone group.

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Номер записи: 82

14-11-2013 дата публикации

BASE UNIT

Номер: US20130301161A1

Автор: SAEKI Shintaro

Принадлежит: NIDEC CORPORATION

A base unit includes a stator, a wiring substrate, and a base portion. The base portion includes a tubular portion, a first recess portion surrounding the tubular portion, and first through-holes arranged within the first recess portion. The wiring substrate includes a connection portion arranged on an upper surface of the base portion and provided with lands, a power feeding portion arranged on a lower surface of the base portion, and an extension portion arranged to interconnect the connection portion and the power feeding portion. A first bonding layer is arranged between the connection portion and a bottom of the first recess portion to bond the connection portion and the bottom of the first recess portion. A second bonding layer is arranged between the power feeding portion and the lower surface of the base portion to bond the power feeding portion and the lower surface of the base portion. 1. A base unit for use in a disk drive apparatus , comprising:a stator including a plurality of coils;a wiring substrate electrically connected to the stator; anda base portion including an upper surface and a lower surface; whereinthe base portion includes a tubular portion in which the stator is arranged, a first recess portion arranged on the upper surface of the base portion so as to surround the tubular portion, and a plurality of first through-holes arranged within the first recess portion to extend through the upper surface and the lower surface of the base portion;the wiring substrate includes a connection portion arranged on the upper surface of the base portion and provided with a plurality of lands electrically connected to the coils, a power feeding portion arranged on the lower surface of the base portion and an extension portion arranged to interconnect the connection portion and the power feeding portion;the plurality of first through-holes axially overlap with at least a portion of at least one of the plurality of lands; at least one lead wire is led out from ...

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Номер записи: 83

21-11-2013 дата публикации

Logging disk recovery operations in a non-volatile solid-state memory cache

Номер: US20130308433A1

Автор: Akhila Tadinada, Yunaldi Yulizar

Принадлежит: SEAGATE TECHNOLOGY LLC

An apparatus includes a controller capable of being coupled to a magnetic data storage media and a cache. The cache includes non-volatile, solid-state memory. The controller is configured to detect a defect in the data storage media requiring a recovery operation and allocate a portion of the cache for storage of a journal to be used in the recovery operation. The controller is further configured to log steps of the recovery operation to the journal.

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Номер записи: 84

28-11-2013 дата публикации

Brushless motor and disk drive apparatus

Номер: US20130313935A1

Автор: Hongbing Du, Junichi Hashimoto, Kazuya Enokizono, Toshikazu HIMENO

Принадлежит: Nidec Corp

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. The rotary unit includes a magnet, a hub made of a magnetic material and a rotor yoke made of a magnetic material. The armature includes a plurality of coil patterns arranged along a circumferential direction. The hub includes an inner lower surface, an outer lower surface and a recess portion. The recess portion is arranged between the inner lower surface and the outer lower surface and depressed upward. At least a portion of the magnet is accommodated within the recess portion. At least one of the inner lower surface and the outer lower surface is positioned above a lower surface of the magnet.

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Номер записи: 85

28-11-2013 дата публикации

SYSTEM AND METHOD FOR CONTROLLING AUDIO SOURCE

Номер: US20130315044A1

Автор: Bastian Mark-Jan

Принадлежит: N2IT Holding B.V.

An apparatus for signal processing, wherein a disc is placed on a turntable and is provided with a groove which can be followed by the pick-up element, and employing a time-code signal wherein during use of the disc the said time-code signal controls the digital audio source. 1. A method of signal processing for controlling a sound source , comprising:deriving a time code signal from a rotating disc, the derived time code signal comprising an absolute time code signal in the audible range;filtering the derived time code signal to determine a relative time code signal;determining the speed of rotation of the rotating disc based on the absolute time code signal; anddetermining a place on the rotating disc based on the relative time code signal.2. The method according to claim 1 , wherein the relative time code signal is determined based on a phase difference between right and left channels of the absolute time code signal.3. The method according to claim 1 , further comprising determining the direction of the rotation of the rotating disk based on the relative time code signal.4. The method according to claim 3 , further comprising:controlling the speed of play of the sound source based on the absolute time code; andcontrolling the direction of play of the sound source based on the relative time code signal.5. The method according to claim 1 , wherein an accurate time code signal is determined based on the absolute time code signal and the relative time code signal claim 1 , andwherein play of the sound source is controlled based on the accurate time code signal.6. The method according to claim 1 , wherein the absolute time code signal and the relative time code signal are used to control output from the sound source.7. The method according to claim 6 , wherein controlling output from the sound source includes one or more of:controlling the play of sound from the sound source;controlling the play of music from the sound source;controlling the play of DVD images from ...

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Номер записи: 86

05-12-2013 дата публикации

Shingled magnetic recording disk drive with compensation for the effect of far track erasure (fte) on adjacent data bands

Номер: US20130321948A1

Автор: Damien Cyril Daniel Le Moal, Shad Henry Thorstenson, Zvonimir Z. Bandic

Принадлежит: Individual

A shingled magnetic recording (SMR) disk drive has concentric shingled data tracks having data sectors with physical block addresses (PBAs), with the tracks being arranged in annular bands separated by annular inter-band gaps. The disk drive also has an on-disk extended cache region and may have writable inter-band cache (IBC) tracks in the inter-band gaps. A count is maintained in memory for each band and each IBC, and the count is incremented for each writing to a band or an IBC. When a count for a band or IBC reaches a predetermined threshold, the data is read from the tracks in the boundary region of the adjacent band that are within the range of the FTE and that data is then written to the extended cache. The FTE-affected tracks are then invalidated, meaning that PBAs can no longer be assigned to the data sectors in those tracks.

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Номер записи: 87

05-12-2013 дата публикации

BEARING MECHANISM, MOTOR, AND DISK DRIVE APPARATUS

Номер: US20130321951A1

Автор: KIMURA Akihiro, SAKURADA Kunio, SUMIJI Akinobu

Принадлежит: NIDEC CORPORATION

A bearing mechanism includes a shaft portion, a sleeve portion, a lower opposing portion, a lower outer annular portion, and an upper opposing portion. The sleeve portion includes a sleeve body and a lower thrust plate. A radial dynamic pressure bearing portion is defined in a radial gap. A lower thrust dynamic pressure bearing portion is defined in a lower thrust gap. A lower seal portion is defined in a lower seal gap located between the sleeve portion and the lower outer annular portion. An upper seal portion is defined in an upper seal gap continuous with an upper thrust gap. The sleeve portion includes a first communicating channel in communication with the upper seal gap, and a second communicating channel located between the sleeve body and the lower thrust plate. A lower mouth portion of the first communicating channel axially overlaps the lower thrust dynamic pressure bearing portion. 1. A bearing mechanism comprising:a shaft portion centered on a central axis extending in a vertical direction, and including a cylindrical outer circumferential surface;a sleeve portion including a sleeve body and a lower thrust plate, and arranged to be rotatable about the central axis, the sleeve body including a through hole in which the shaft portion is accommodated, and the lower thrust plate being fixed to a lower portion of the sleeve body;a lower opposing portion arranged to extend radially outward from a lower portion of the shaft portion, and including an upper surface arranged axially opposite a lower end surface of the sleeve portion with a lower thrust gap defined therebetween;a lower outer annular portion whose position relative to the lower opposing portion is fixed, and including a cylindrical or substantially cylindrical inner circumferential surface arranged to surround at least a portion of an outer circumferential surface of the sleeve portion; andan upper opposing portion arranged to extend radially above the sleeve portion, and including a lower surface ...

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Номер записи: 88

05-12-2013 дата публикации

BEARING MECHANISM, MOTOR AND DISK DRIVE APPARATUS

Номер: US20130321952A1

Автор: KIMURA Akihiro, SAKURADA Kunio, SUMIJI Akinobu

Принадлежит: NIDEC CORPORATION

A bearing mechanism includes a shaft portion, a sleeve portion, a lower opposing portion, a lower outer ring-shaped portion, and an upper opposing portion. A lower seal portion serving as a pumping seal portion is provided in a lower seal gap between the sleeve portion and the lower outer ring-shaped portion. An upper seal portion is provided in an upper seal gap joined to an upper thrust gap. The lower portion of the sleeve portion includes a large-diameter portion and a small-diameter portion positioned below the large-diameter portion. The sleeve portion includes a communication path joined to the upper seal gap. The communication path includes an opening portion opened in a border between the large-diameter portion and the small-diameter portion. The outer peripheral portion of the lower opposing portion includes an outer periphery protrusion portion radially opposed to the small-diameter portion and axially opposed to the large-diameter portion. 1. A bearing mechanism , comprising:a shaft portion arranged about a center axis extending in an up-and-down direction, the shaft portion including a cylindrical outer circumferential surface;a sleeve portion arranged to rotate about the center axis, the sleeve portion including a through-hole arranged to accommodate the shaft portion;a lower opposing portion extending radially outward from a lower portion of the shaft portion, the lower opposing portion including an upper surface axially opposed to a lower end surface of the sleeve portion through a lower thrust gap;a lower outer ring-shaped portion whose relative position is fixed with respect to the lower opposing portion, the lower outer ring-shaped portion including a cylindrical or substantially cylindrical inner circumferential surface arranged to surround at least a portion of an outer circumferential surface of the sleeve portion; andan upper opposing portion extending radially outward from the shaft portion at an upper side of the sleeve portion, the upper ...

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Номер записи: 89

05-12-2013 дата публикации

Hydrodynamic bearing assembly and spindle motor including the same

Номер: US20130322792A1

Автор: Hong Joo Lee, Hyun Ho Shin, Ju Ho Kim, Seung Heon Han, Sung Yeol Park

Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a hydrodynamic bearing assembly and a spindle motor including the same. The hydrodynamic bearing assembly includes: a sleeve including a shaft hole to have a shaft rotatably installed therein; and a cover member covering the shaft hole at a lower portion of the shaft hole in an axial direction, wherein an inner surface of the sleeve is provided with depression parts depressed in an outer diameter direction between upper and lower portions of the sleeve and portions in which radial bearings are formed, such that the portions in which the radial bearings are formed are provided with bearing closure adhesion parts allowing the portions in which the radial bearings are formed to be closer to the shaft than portions other than the portions in which the radial bearings are formed.

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Номер записи: 90

12-12-2013 дата публикации

Movement Mechanism and Optical Disc Apparatus

Номер: US20130332944A1

Автор: Kawabata Toru

Принадлежит: Panasonic Corporation

The present invention provides a movement mechanism that is capable of easily releasing a bite-in state of a feed screw and a rack without increasing the size or the cost of an apparatus and without breaking the movement mechanism. A movement mechanism according to the present invention linearly moves a movement object, and includes: a feed screw; a drive motor for rotating the feed screw; a drive section for supplying a drive pulse to the drive motor; a movement member for linearly moving the movement object along with the rotation of the feed screw by the drive motor, the movement member being engaged with the feed screw; a detection section for detecting a situation in which the movement object is not moving; and a control section for, when the detection section has detected a situation in which the movement object is not moving, causing the drive section to output a drive pulse that causes the drive motor to rotate and vibrate. 1. A movement mechanism for linearly moving a movement object , the movement mechanism comprising:a feed screw;a drive motor for rotating the feed screw;a drive section for supplying a drive pulse to the drive motor;a movement member for linearly moving the movement object along with the rotation of the feed screw by the drive motor, the movement member being engaged with the feed screw;a detection section for detecting a situation in which the movement object is not moving; anda control section for, when the detection section has detected a situation in which the movement object is not moving, causing the drive section to output a drive pulse that causes the drive motor to rotate and vibrate.2. The movement mechanism according to claim 1 , whereinthe drive motor is a stepping motor, andthe control section, when the detection section has detected a situation in which the movement object is not moving, causes the drive section to output a drive pulse having a resonance frequency of the stepping motor or a frequency close to the resonance ...

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Номер записи: 91

19-12-2013 дата публикации

Method of and system for mobile surveillance and event recording

Номер: US20130336634A1

Автор: Robert V. Vanman, Simon Christopher Goble

Принадлежит: Enforcement Video LLC

A data-encoding system includes a source of unencoded data, and a first encoder interoperably coupled to the source, wherein the first encoder is adapted to receive the unencoded data, encode the unencoded data, and output encoded data at a first data rate. The data encoding system further includes a second encoder interoperably coupled to the source, wherein the second encoder is adapted to receive the unencoded data, encode the unencoded data, and output encoded data at a second data rate in which the second data rate exceeds the first data rate. This Abstract is provided to comply with rules requiring an Abstract that allows a searcher or other reader to quickly ascertain subject matter of the technical disclosure. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

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Номер записи: 92

26-12-2013 дата публикации

Spindle motor

Номер: US20130342061A1

Автор: Hyun Ho Shin

Принадлежит: Samsung Electro Mechanics Co Ltd

There is provided a spindle motor including a lower thrust member fixed to a base member; a shaft having a lower end portion fixed to the lower thrust member; a rotating member rotating around the shaft; an upper thrust member fixed to an upper end portion of the shaft and forming a bearing clearance together with the rotating member; and a cover member fixed to the upper thrust member.

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Номер записи: 93

26-12-2013 дата публикации

Information processing device, information processing method, and storage medium

Номер: US20130342928A1

Автор: Takayuki Niiyama

Принадлежит: Fujitsu Ltd

An information processing device includes an acceleration sensor that detects an acceleration; a processor that is coupled to the acceleration sensor and configured to: cause a storage that is included in the information processing device to execute crash-proof processing based on the acceleration detected by the acceleration sensor, and cause the storage to terminate the crash-proof processing when the processor detects that an external device is mechanically coupled to the information processing device.

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Номер записи: 94

26-12-2013 дата публикации

DISK DRIVE DEVICE

Номер: US20130342932A1

Автор: ANDO Susumo, KODAMA Mitsuo, NONAKA Taketo, Watanabe Takanori

Принадлежит:

A disk drive device comprises a rotor on which a recording disk is to be mounted and a fixed body rotatably supporting the rotor through a bearing unit. The rotor includes a projecting portion configured to fit into a central hole of the recording disk, a clamper configured to be fixed to the projecting portion, and a seating portion provided radially outward of the projecting portion. The projecting portion and the seating portion are configured such that the seating portion moves with respect to the projecting portion by fixing the clamper to the projecting portion with the recording disk being in between the clamper and the seating portion. 1. A disk drive device , comprising:a rotor on which a recording disk is to be mounted; anda fixed body rotatably supporting the rotor through a bearing unit, a projecting portion configured to fit into a central hole of the recording disk;', 'a clamper configured to be fixed to the projecting portion; and', 'a seating portion provided radially outward of the projecting portion,, 'wherein the rotor includeswherein the projecting portion and the seating portion are configured such that the seating portion moves with respect to the projecting portion by fixing the clamper to the projecting portion with the recording disk being in between the clamper and the seating portion.2. The disk drive device according to claim 1 , wherein the projecting portion and the seating portion are integrally formed as a hub claim 1 , andwherein the shape of the hub and the elasticity of the hub are determined such that the seating portion moves with respect to the projecting portion by fixing the clamper to the projecting portion with the recording disk being in between the clamper and the seating portion.3. The disk drive device according to claim 1 , wherein claim 1 , in the case where a position claim 1 , in an axial direction claim 1 , of the seating portion with respect to the projecting portion is called a seating portion position claim 1 , ...

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Номер записи: 95

26-12-2013 дата публикации

DISK DRIVING APPARATUS HAVING IMPROVED QUALITY

Номер: US20130342933A1

Автор: KITAMURA Tetsuo, OMURA Yuji, SUZUKI Aikra

Принадлежит: SAMSUNG ELECTRO-MECHANICS JAPAN ADVANCED TECHNOLOGY CO., LTD.

A disk driving apparatus includes a base member, a hub member, and a fluid bearing unit. The base member has a head movement region on which a head unit is to be mounted such that a head portion of the head unit can be moved along the radial direction of a recording face in a reciprocating manner while facing the recording face of a recording disk to be mounted on the hub member, and a recessed housing portion housing the fluid bearing unit such that it surrounds at least a part of a rotor unit supported by the fluid bearing unit. Furthermore, the base member has an inhibiting wall at a boundary between the head movement region and the recessed housing portion so as to prevent a lubricant fluid from migrating toward the recording disk side. 1. A disk driving apparatus configured to mount a head unit for performing at least reading or writing of data from or onto a recording disk , comprising:a base member;a rotor unit on which the recording disk is to be mounted;a fluid bearing unit configured to be filled with a lubricant fluid and produce a dynamic pressure in the lubricant fluid so as to rotatably support the rotor unit relative to the base member;a driving unit configured to include a coil and a magnet and rotationally drive the rotor unit relative to the base member; anda head movement region in which the head unit is to be mounted in a movable manner,wherein a gas-liquid interface of the lubricant fluid communicates with the head movement region via a gap in the driving unit, andwherein a capturing mechanism is provided in a path that communicates with the gap in the driving unit and the head movement region.2. The disk driving apparatus according to claim 1 , wherein the capturing mechanism is provided on a surface of the base member that faces the rotor unit.3. The disk driving apparatus according to claim 2 ,wherein the base member has a recessed housing portion surrounding at least a part of the rotor unit, andwherein the capturing mechanism is arranged on ...

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Номер записи: 96

26-12-2013 дата публикации

MOTOR AND DISK DRIVE APPARATUS

Номер: US20130342934A1

Автор: SATO Kazuhiro, SHIRAISHI Masahiro, Takahashi Katsuya

Принадлежит: NIDEC CORPORATION

A spindle motor arranged to rotate a disk about a center axis extending in an up-down direction includes a rotary unit including a rotor magnet and a stationary unit including a stator opposed to the rotor magnet and a base plate. The base plate includes a flat plate-shaped member positioned around the center axis and made of a first kind of metallic material and a base body axially overlapping with the plate-shaped member and made of a second kind of metallic material. The first kind of metallic material is larger in Young's modulus than the second kind of metallic material. The base body includes a cylindrical or substantially cylindrical bearing attachment portion axially extending about the center axis and a bottom plate portion radially extending from a lower portion of the bearing attachment portion. The plate-shaped member is positioned below the bottom plate portion to contact the bottom plate portion. 1. A spindle motor for rotating a disk about a center axis extending in an up-down direction , comprising:a rotary unit including a rotor magnet; anda stationary unit including a stator opposed to the rotor magnet and a base plate; whereinthe base plate includes a flat plate-shaped member positioned around the center axis and made of a first kind of metallic material and a base body axially overlapping with the plate-shaped member and made of a second kind of metallic material;the first kind of metallic material is larger in Young's modulus than the second kind of metallic material;the base body includes a cylindrical or substantially cylindrical bearing attachment portion axially extending about the center axis and a bottom plate portion radially extending from a lower portion of the bearing attachment portion; andthe plate-shaped member is positioned below the bottom plate portion to contact the bottom plate portion and fixed to the base body.2. The spindle motor of claim 1 , wherein an axial thickness of a portion of the plate-shaped member contacting the ...

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Номер записи: 97

26-12-2013 дата публикации

DISK DRIVE DEVICE WITH HUB WITH THINNESS AND SUPPRESSED TORQUE DECREASE

Номер: US20130342935A1

Автор: IWAI Hiroshi, Tashiro Tomoyuki, Watanabe Takanori

Принадлежит: SAMSUNG ELECTRO-MECHANICS JAPAN ADVANCED TECHNOLOGY CO., LTD.

The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The diameter of the inner cylinder portion is larger than the diameter of the outer cylinder portion. 1. A disk drive device comprising:a base member;a hub;a bearing unit which is arranged on the base member and which rotatably supports the hub; anda spindle drive unit, which drives the hub to rotate, wherein the spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole, and a magnet configured with an outer diameter portion and a portion that is opposite to the salient pole,wherein the hub is formed of a magnetic material,wherein the base member includes a wire hole through which a wire for forming the coil passes, and a concavity that is formed at a bottom surface of the base member, at least a part of the concavity being arranged at a position that is radially outside of the outer diameter portion of the magnet,wherein the wire passes through the wire hole and is arranged along the bottom surface of the base member to a wiring member to which the wire is connected at the concavity at the bottom surface of the base member at a position that is outside of the outer diameter portion of the magnet in the radial direction,wherein the wiring member is positioned outside the wire hole in the diameter direction.2. The disk drive device according to claim 1 , wherein the spindle drive unit comprises a radial dynamic pressure bearing configured to rotatably support the hub claim ...

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Номер записи: 98

02-01-2014 дата публикации

Fluid dynamic bearing assembly and spindle motor having the same, and method of assembling shaft and stopper

Номер: US20140001904A1

Автор: Ik Sun LEE

Принадлежит: Samsung Electro Mechanics Co Ltd

There are provided a fluid dynamic bearing assembly, a spindle motor having the same, and a method of assembling a shaft and a stopper, the fluid dynamic bearing assembly, including: a shaft, a sleeve rotatably supporting the shaft by fluid dynamic pressure, the shaft rotating relative thereto accordingly, and a stopper having a body inserted into a fixing recess provided on a lower portion of the shaft, and a flange provided to be protruded from a lower end of the body to an outer side thereof in a radial direction and caught by a lower end of the sleeve, wherein the stopper includes an air vent penetrating therethrough in an axial direction.

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Номер записи: 99

02-01-2014 дата публикации

MAGNETIC RECORDING HEAD, AND DISK DRIVE COMPRISING THE SAME

Номер: US20140002924A1

Автор: KOUI Katsuhiko, Matsumoto Takuya, NARITA Naoyuki, TAGUCHI Tomoko, TAKEO Akihiko, YAMADA Kenichiro

Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a magnetic recording head includes a disk-facing surface configured to face a recording layer of a recording medium, a main magnetic pole includes a distal end located on the disk-facing surface and configured to apply a recording magnetic field to the recording layer of the recording medium, a leading shield on a leading side of the main magnetic pole, opposed to the distal end of the main magnetic pole across a gap, a high-frequency oscillator between the leading shield and the distal end of the main magnetic pole, and a recording coil configured to excite the main magnetic pole with a magnetic field. 1. A magnetic recording head comprising:a disk-facing surface configured to face a recording layer of a recording medium;a main magnetic pole comprising a distal end located on the disk-facing surface and configured to apply a recording magnetic field to the recording layer of the recording medium;a leading shield on a leading side of the main magnetic pole, opposed to the distal end of the main magnetic pole across a gap;a high-frequency oscillator between the leading shield and the distal end of the main magnetic pole; anda recording coil configured to excite the main magnetic pole with a magnetic field.2. The magnetic head of claim 1 , wherein the leading shield comprises a distal on the leading side of the magnetic pole claim 1 , opposed to the distal end of the magnetic pole across a gap claim 1 , and a connecting portion connected to a part of the main magnetic pole located apart from the disk-facing surface claim 1 , and the leading shield forms a magnetic core together with the main magnetic pole.3. The magnetic head of claim 2 , wherein the connecting portion comprises a nonconductor.4. The magnetic head of claim 3 , further comprising a trailing head opposed to a trailing side of the distal end of the main magnetic pole across a write gap.5. The magnetic head of claim 4 , wherein a ratio of length TSW of a part of the trailing ...

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Номер записи: 100