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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

Information reproduction device and information reproduction method

Номер: US20120002521A1

Автор: Daisuke Shimoda

Принадлежит: Panasonic Corp

A process of reproducing information according to the present invention includes: reproducing record data recorded on an information-recording medium including a data area for recording the record data, and a defect control area for recording defect information of the data area; storing the defect information in a storage unit; and reducing a storage area of the storage unit which is used for storing the defect information.

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Номер записи: 1

19-01-2012 дата публикации

Recording medium for storing information for still picture, recording and/or reproducing method and apparatus therefor

Номер: US20120014666A1

Автор: Jung-Suk Kang, Pan-Qie Park, Seong-Jin Moon, Tae-Yun Chung, Young-Nam Oh

Принадлежит: Individual

A recordable and/or rewriteable recording medium for storing still picture data, and recording and/or reproducing method and apparatus therefor. The recording medium stores still picture group information for grouping a plurality of still pictures in order to manage the still picture at a group level, and stores audio group information for grouping additional audio data added to the still picture data after the still picture data are recorded. Therefore, large-capacity still picture data and additional audio data added thereto can be recorded using a minimum amount of management information. Further, during reproduction, data can be displayed and edited in units of the respective still pictures. Also, it is possible to cope with after-recording of the audio data.

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Номер записи: 2

15-03-2012 дата публикации

Method for storing audio-centered information with a multi-level table-of-contents (toc) mechanism with one master-toc and sub-tocs for various audio formats, a device for use with such mechanism and a unitary storage medium containing such mechanism

Номер: US20120063280A1

Автор: Johannes J. Mons

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

Audio information is stored on a unitary storage medium with a Table-of-Contents (TOC) mechanism for therein specifying an actual configuration of various audio items on the medium. In particular, one or more Sub-TOCs are each assigned to a respective different audio format. A single Master-TOC is provided for specifically pointing to each

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Номер записи: 3

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: 4

26-04-2012 дата публикации

System and method for providing content in two formats on one drm disk

Номер: US20120099410A1

Автор: Christopher Jensen Read

Принадлежит: Individual

A DRM disk such as a Blu-ray stores content in a high resolution version for playing by a disk player. The disk also stores the same content in a lower resolution version for playing by a secondary device such as a Playstation Portable (PSP). The disk can be engaged with the disk player and the lower resolution format transferred to the secondary player through a mechanism such as a removable medium (e.g., a Sony Memory Stick®) or a USB connection or other means in accordance with DRM restrictions on the disk.

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Номер записи: 5

10-05-2012 дата публикации

Information carrier comprising access information

Номер: US20120113788A1

Автор: Aalbert Stek, Bart Van Rompaey, Martinus Wilhelmus BLUM

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

An information carrier for holding user information includes access information for accessing the user information, the access information being stored in a pre-determined first region on the information carrier. The information carrier further includes at least one further region different from the first region, the further region comprising dummy information.

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Номер записи: 6

31-05-2012 дата публикации

Optical disc, optical disc manufacturing method, optical disc recording device and optical disc reproduction device

Номер: US20120134250A1

Автор: Keiji Nishikiori, Makoto Usui, Mamoru Shoji, Masaru Yamaoka, Mitsuro Moriya

Принадлежит: Individual

An optical disc includes a reflective film formed on concave and convex marks after the concave and convex marks are synchronized with the integral multiple of a channel bit length and formed in accordance with modulated main information. Thereafter, continuous or intermittent laser light synchronized with the integral multiple of the channel bit length is irradiated at intervals longer than the longest one of the concave and convex marks in accordance with a spiral track formed in a circumferential direction of the concave and convex marks, whereby an optical characteristic of the reflective film is changed to form a recordable mark and sub-information necessary to reproduce the main information is recorded in a superimposition manner.

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Номер записи: 7

07-06-2012 дата публикации

Information recording medium, device and method for playing back 3d images

Номер: US20120141097A1

Автор: Hiroshi Yahata, Tomoki Ogawa

Принадлежит: Individual

A recording medium allows random access to be performed in playing back 3D graphics. The recording medium includes a digital stream area where a digital stream including temporally-arranged GOP pairs is recorded, and a map information area where map information is recorded. The map information indicates entry addresses in one to one correspondence with entry times on a time axis of the digital stream, and each entry address shows a beginning of a corresponding GOP pair region in the digital stream area. Each GOP pair includes first-type and second-type GOPs, wherein each first-type GOP is data indicating a plain view picture set to be played back from a corresponding entry time, and each second-type GOP is data to be played back with a corresponding first-type GOP to provide a stereoscopic view. The data indicates a difference between a stereoscopic picture set and the plain view picture set.

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Номер записи: 8

21-06-2012 дата публикации

Recording methods and devices for recording information on dual layer recordable disks

Номер: US20120155234A1

Автор: Johannus Leopoldus Bakx

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

The invention relates to recording methods for recording information on a dual layer recordable disk, and to corresponding recording devices. In one such method and recording device the OPC-area is variably located on a layer of the disk. In a preferred embodiment the OPC-area is located relative close to the radius where the data stream switches from the first layer to the second layer. This reduced additional time required for jumping to a fixed OPC-area. Furthermore, in another such method and device the information to be recorded is equally divided over both layers of the dual layer disc. This avoids additional time required for finalization.

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Номер записи: 9

05-07-2012 дата публикации

Systems and Methods for Efficient Data Storage

Номер: US20120173950A1

Автор: Ming Jin, Shaohua Yang

Принадлежит: LSI Corp

Various embodiments of the present invention provide systems and methods for preparing and accessing super sector data sets. As an example, a data storage system including a storage medium is disclosed. The storage medium includes a first servo data region and a second servo data region separated by a user data region. The user data region includes at least a portion of a first codeword and a portion of a second codeword that are together associated with a common header data.

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Номер записи: 10

19-07-2012 дата публикации

String Searching Within Peripheral Storage Devices

Номер: US20120182639A1

Автор: Bradley Edwin Whitney, David G. Hostetter, Gregory S. Toles

Принадлежит: Oracle International Corp

Systems and methods for retrieving data stored on a peripheral storage device such as a magnetic tape drive or disk drive include string searching using the peripheral storage device resources without transferring data to the requesting host computer and transferring only data blocks with matching data to the associated host computer to conserve host resources and data channel and/or network bandwidth.

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Номер записи: 11

16-08-2012 дата публикации

Apparatus, method, and medium storing a program, that reduce playback time differences when joining moving images of different formats

Номер: US20120207450A1

Автор: Araki Matsuda

Принадлежит: Canon Inc

Moving image editing device, method, and storage medium storing a program provide a smart rendering scheme to minimize the variation of playback time, even when editing moving image data that does not match the save format. The format of the moving image-data is compared with the save format. The moving image data is converted into the save format. The moving image data is sequentially joined and saved. A portion or the entirety of the moving image data itself is output if the format of the moving image data matches the save format, or the data encoded into the save format after decoding a portion or the entirety of the moving image data is output if the format of the moving image data does not match the save format. The device repeats sequential joining so that the difference in the playback time with the moving image data is minimized.

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Номер записи: 12

16-08-2012 дата публикации

Data storage medium having security function and output apparatus therefor

Номер: US20120210054A1

Автор: Chang-Jung Kim, Chul-woo Park, Ho-Jung Kim, In-kyeong Yoo

Принадлежит: SAMSUNG ELECTRONICS CO LTD

Provided are a storage medium, which has a security function, for storing media content and an output apparatus for outputting data stored in the storage medium. The storage medium includes a controller for converting at least one of a position of pins of a connector and a storage position of media content in a memory unit in order to control transmission of the media content in the memory unit to the output apparatus.

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Номер записи: 13

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: 14

23-08-2012 дата публикации

Method and apparatus for detecting land pre-pits

Номер: US20120213048A1

Автор: JingFeng Liu, Mats Oberg

Принадлежит: Marvell International Ltd

Aspects of the disclosure provide a method for detecting land pre-pits. The method includes detecting, based on a land pre-pit threshold, a land pre-pit data stream from a signal responsive to land pre-pits on an optical medium, comparing a characteristic of the detected land pre-pit data stream in a specific number of wobble periods with a pre-determined land pre-pit characteristic in the specific number of wobble periods, and adjusting the land pre-pit threshold based on the comparison.

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Номер записи: 15

13-09-2012 дата публикации

Dynamic guarding of a storage media

Номер: US20120233432A1

Автор: Jonathan Williams Haines, Timothy Richard Feldman

Принадлежит: SEAGATE TECHNOLOGY LLC

A fixed data region on a storage medium may be allocated with one of a variety of allocation schemes (e.g., a randomly writable allocation scheme, a non-randomly writeable allocation scheme with a first data isolator spacing, a non-randomly writeable allocation scheme with a second data isolator spacing, and a non-randomly writeable allocation scheme with no dynamic isolators). Dynamic sub-region spacing refers at least to the number of data tracks in a data region of a magnetic disc between dynamic isolators and the number of bits in a data region in flash memory between dynamic isolators. The presently disclosed technology adapts isolators on the storage medium to create dynamic sub-regions based on characteristics of the storage medium, characteristics of the data, and/or expected access patterns of data to be written to the storage medium.

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Номер записи: 16

01-11-2012 дата публикации

Recording medium, playback device, system lsi, playback method, glasses, and display device for 3d images

Номер: US20120275765A1

Автор: Tomoki Ogawa, Wataru Ikeda

Принадлежит: Individual

A recording medium in which a left-view video stream and a right-view video stream are recorded in an interleaved transport stream file. The interleaved transport stream file is identified by a combination of (i) an equivalent identification number being equivalent with the file reference information and (ii) a file extension indicating that video streams are stored in the interleaved manner, the equivalent identification number. Among Extents that constitute the interleaved transport stream file, Extents constituting the left-view or right-view video stream are identified as a normal-format transport stream file by a combination of (i) the equivalent identification number being equivalent with the file reference information and (ii) a file extension indicating that video streams are stored in a normal manner.

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Номер записи: 17

06-12-2012 дата публикации

Recording medium, reproduction and recording method, reproduction and recording device

Номер: US20120307608A1

Автор: Koichiro Nishimura, Masakazu Ikeda, Yutaka Nagai

Принадлежит: Hitachi Consumer Electronics Co Ltd

Obtain an expanded address without altering the bit number of an address which is embedded in a wobble. Generate a virtual bit which is not recorded on a disc, and which is expressed by the disparity from the rules and the presence or absence of information embedded in part or all of the wobble address.

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Номер записи: 18

03-01-2013 дата публикации

Channel circuit and seek method

Номер: US20130003209A1

Автор: Keiichi KISHINO

Принадлежит: Toshiba Corp

A channel circuit includes a reader, a decoder, a prediction module, and a seek module. The reader reads data written in a medium. The decoder performs iterative decoding of the read data. The prediction module predicts whether an early read is possible or not without waiting for arrival of the read data. The seek module continuously initiates a seek when the prediction module predicts that the read is possible.

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Номер записи: 19

10-01-2013 дата публикации

Patterned media with an alternating series of concentric servo zones and overlap zones

Номер: US20130010383A1

Автор: Kei Yasuna, Keiichiro Nonaka, Masahito Kobayashi

Принадлежит: Individual

Embodiments described herein provide for patterned media concentric zones with an alternating series of concentric servo zones and overlap zones. The overlap zones facilitate the writing of servo data between servo zones of different servo frequency. The overlap zones may be dual frequency zones. The dual frequency zones have a first set of overlap patterns with the substantially identical pattern as the bordering lower frequency servo zone and a second set of overlap patterns with the substantially identical pattern as the bordering higher frequency servo zone. A bootstrap zone can be included near the inner diameter to assist initial servo writing. Alternatively the overlap zones are bootstrap zones. Such bootstrap zones have both bootstrap patterns and overlap patterns, the overlap patterns have the substantially identical pattern as a bordering servo zone. Bootstrap patterns only require DC magnetization for servo operability.

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Номер записи: 20

10-01-2013 дата публикации

Information processing apparatus, information recording medium, information processing method, and program

Номер: US20130011117A1

Автор: Toshiya Hamada

Принадлежит: Sony Corp

In processing of recording data on a recording medium, three-dimensional image discrimination data representing whether or not there is a possibility of a three-dimensional image being included in recorded data is recorded as management information. The three-dimensional image discrimination data is recorded in a clip information file set in association with a stream file as a storage file of image data, a playlist file including reproduction section designating information for the clip information file, a disc management file which directly or indirectly designates the playlist file, or the like. A reproducing apparatus can thereby easily determine the presence/absence of a three-dimensional image without performing analysis on reproduction target data.

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Номер записи: 21

31-01-2013 дата публикации

Method and apparatus for redirecting data writes

Номер: US20130031317A1

Автор: In Sik Ryu, Se Wook Na

Принадлежит: SEAGATE TECHNOLOGY LLC

Apparatuses and methods for redirecting data writes are disclosed. In one embodiment a controller may be configured to receive a command including write data and address data identifying a target zone of a data storage medium; determine whether the target zone contains sufficient available data sectors to store the write data; and record the write data to a common area of a different zone when the target zone does not contain sufficient available data sectors, the common area available to store data when a target zone lacks sufficient available data sectors. In another embodiment, a method may comprise receiving a write command identifying a target zone of a data storage medium; determining whether the target zone contains sufficient available data sectors to store the write data; and recording the write data to a common area of a different zone when the target zone does not contain sufficient available data sectors.

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Номер записи: 22

28-02-2013 дата публикации

End-to-end data protection supporting multiple crc algorithms

Номер: US20130055053A1

Автор: Kevin D. Butt, Paul J. Seger

Принадлежит: International Business Machines Corp

A method for providing end-to-end data protection while supporting multiple cyclic-redundancy-check (CRC) algorithms is disclosed. In one embodiment, such a method includes receiving, from a first host device, a data block protected by a first CRC. The first CRC is generated using a first CRC algorithm. The method checks the integrity of the data block using the first CRC and the first CRC algorithm. The method then computes a second CRC for the data block using a second CRC algorithm different from the first CRC algorithm. The method then stores the data block, the first CRC, and the second CRC on a storage medium, such as magnetic tape. A corresponding apparatus is also disclosed.

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Номер записи: 23

11-04-2013 дата публикации

Manufacturing method for optical disc, optical disc, playback method for optical disc, playback apparatus for optical disc, recording apparatus for optical disc

Номер: US20130088945A1

Автор: Shoei Kobayashi

Принадлежит: Sony Corp

Address information that has been error correction encoded is recorded on a second version of a recording medium after being transformed such that such that the address decoding cannot be performed by a playback device that is not compatible with the second version of the recording medium. The address decoding for the second version of the recording medium cannot be performed by the incompatible playback device (for example, a playback device that was manufactured to be compatible only with a first version of the recording medium). In other words, in the playback device that is not compatible with the second version of the recording medium, a state is created in which address errors cannot be corrected, so access is impossible (recording and playback are impossible).

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Номер записи: 24

18-04-2013 дата публикации

Data protection system

Номер: US20130094340A1

Автор: Mark Ayres, Tod R. Earhart

Принадлежит: AKONIA HOLOGRAPHICS LLC

The present invention provides systems and methods for logically organizing data for storage and recovery on a data storage medium using a multi-level format. The present invention also provides systems and methods for protecting data stored on data storage medium so that the data may be recovered without errors.

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Номер записи: 25

02-05-2013 дата публикации

Recording medium and apparatus for protecting copyrighted digital data

Номер: US20130108243A1

Автор: Etsurou Sakamoto, Koichi Sugiyama

Принадлежит: Sony Corp

Copying, dubbing or reproducing copyrighted digital data can be inhibited or restricted to properly protect a copyright. AV data recorded on a pre-recorded tape is output from a reproducing unit of a first digital VCR with protective information indicating whether the copy of the AV data is inhibited or not. The protective information is input with the A/V data to a second digital VCR. Copy permission information of a blank tape loaded in the second digital VCR is discriminated and the second digital VCR records the AV data supplied from the first digital VCR based on the protective information and the copy permission information.

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Номер записи: 26

06-06-2013 дата публикации

Information recording and reproducing method using management information including mapping information

Номер: US20130142496A1

Автор: Haruhiko Toyama, Hideo Ando, Takero Kobayashi, Yasufumi Tsumagari

Принадлежит: Individual

According to one embodiment, there is provided an information playback method, comprising reading out management information used to manage one or more video titles from an information storage medium, the medium storing an advanced content including the management information in which a title timeline indicating playback timings of objects of each video title being individually defined, and playing back objects of each video title in accordance with the title timeline defined in the readout management information.

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Номер записи: 27

04-07-2013 дата публикации

Localized Dispersed Storage Memory System

Номер: US20130170062A1

Автор: Gladwin S. Christopher, Grube Gary W., Markison Timothy W.

Принадлежит: CLEVERSAFE, INC.

A method begins by a processing module receiving data to store and determining error coding dispersal storage function parameters. The method continues with the processing module encoding at least a portion of the data in accordance with the error coding dispersal storage function parameters to produce a set of data slices. The method continues with the processing module defining addressable storage sectors within the single hard drive based on a number of data slices within the set of data slices to produce a set of addressable storage sectors. The method continues with the processing module storing data slices of the set of data slices in corresponding addressable storage sectors of the set of addressable storage sectors. 1. A method for extending life of a single hard drive for reliably storing data , the method comprises:determining an error profile of the single hard drive, wherein the error profile includes at least one of detected storage errors and predicted storage errors;determining error coding dispersal storage function parameters based on the error profile;encoding a data segment of the data in accordance with the error coding dispersal storage function parameters to produce a set of encoded data slices;defining addressable storage sectors within the single hard drive based on the error coding dispersal storage function parameters and on the error profile to produce a set of addressable storage sectors; andstoring encoded data slices of the set of encoded data slices at addressable locations in corresponding addressable storage sectors of the set of addressable storage sectors.2. The method of claim 1 , wherein the determining error coding dispersal storage function parameters further comprises:determining the error coding dispersal storage function parameters based on metadata that includes one or more of: a data object name; a data size indicator; a slice name; a command; a priority indicator; a security indicator; a user identification; a data type; ...

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Номер записи: 28

11-07-2013 дата публикации

Apparatus for and a method of storing a real time stream of digital information signals

Номер: US20130177300A1

Автор: Wilhelmus J. Van Gestel

Принадлежит: KONINKLIJKE PHILIPS ELECTRONICS NV

An apparatus for recording a substantially real time stream of digital information signals on a disc like record carrier has been proposed. The stream of information signals represents information arranged in a sequence of video frames, each video frame arranged in separate, consecutive data blocks comprised in separate, consecutive data packets. The apparatus comprises input means ( 1 ) for receiving the stream of digital signals, processing means ( 100 ) for processing the stream of digital information signals to obtain digital information signals and writing means ( 102 ) for writing the digital information signals into the units of recording on the disc like record carrier. The processing means ( 102 ) are adopted to detect the data blocks in the data packets and to allocate consecutive data blocks comprised in multiple data packets into consecutive logical units, a size of each logical unit corresponding to the predetermined size of the unit of recording. This apparatus is specifically suitable for recording digital video (DV) signals in a manner that preserves the format of original data as much as possible.

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Номер записи: 29

25-07-2013 дата публикации

METHOD OF MAKING A MULTI-CHANNEL TIME BASED SERVO TAPE MEDIA

Номер: US20130188272A1

Автор: Dugas Matthew P.

Принадлежит:

A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations. 151-. (canceled)52. A method of formatting magnetic tape media comprising energizing a plurality of recording channels of a surface thin film magnetic recording head by way of a separate electrically conductive coil for each recording channel , wherein at least one of the plurality of channels is energized with electrical pulses consistent with a timing-based servo pattern of different timing than at least one other of the plurality of channels.53. The method of claim 52 , wherein the recording channels are magnetically isolated.54. The method of claim 53 , wherein the recording channels are magnetically isolated by substantially magnetically impermeable material.55. The method of claim 54 , wherein the recording channels are magnetically isolated at least in part by gaps in a surface thin film of the surface thin film magnetic recording head.56. A method of formatting magnetic tape media comprising independently energizing a plurality of independent and magnetically isolated timing-based recording channels of a surface thin film magnetic recording head with different electrical signals which would cause cross-talk interference if not for the independent and magnetically isolated channels.57. The method of claim 56 , wherein the different electrical signals are ...

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Номер записи: 30

25-07-2013 дата публикации

Disk drive and method for arranging and managing calibration area in disk drive

Номер: US20130188276A1

Автор: Kazuto Kashiwagi, Takeyori Hara

Принадлежит: Toshiba Corp

According to one embodiment, there is provided a disk drive. In the disk drive, a calibration module calibrates a write condition using a first area in a sequential access area on a disk to which data is to be written next time as a calibration area if the calibration is required. A manager enters the calibration area in a management table in association with a physical address of the first area used as the calibration area. A sequential write module continues a sequential writing from a second area following the first area based on skipping the first area.

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Номер записи: 31

05-09-2013 дата публикации

Information playback system using information storage medium

Номер: US20130230298A1

Автор: Haruhiko Toyama, Hideo Ando, Takero Kobayashi, Yasufumi Tsumagari

Принадлежит: Toshiba Corp

According to one embodiment, there is provided a data processing method. The method includes reading management information indicative of a playback and display procedure, acquiring a content from a certain storage position at a timing determined based on the management information, and performing playback and display of the content at a timing determined based on the management information.

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Номер записи: 32

19-09-2013 дата публикации

Low inductance, ferrite sub-gap substrate structure for surface film magnetic recording heads

Номер: US20130242427A1

Автор: Dugas Matthew P.

Принадлежит: Advanced Research Corporation

A thin film magnetic recording head is fabricated by forming a substrate from opposing ferrite blocks which have a ceramic member bonded between them. This structure is then diced to form a plurality of columns, wherein each column has a ferrite/ceramic combination. Each column represents a single channel in the completed head. A block of ceramic is then cut to match the columned structure and the two are bonded together. The bonded structure is then cut or ground until a head is formed, having ceramic disposed between each channel. A ferrite back-gap is then added to each channel, minimizing the reluctance of the flux path. The thin film is patterned on the head to optimize various channel configurations. 151-. (canceled)52. Magnetic tape media comprising:a plurality of servo tracks, each having a timing-based servo pattern written thereon;wherein the plurality of servo tracks are recorded via independently controllable and magnetically isolated magnetic recording head channels using intervals of electrical current comprising different timing from one channel to another.53. Magnetic tape media comprising:a plurality of servo tracks, each having a timing-based servo pattern written thereon;wherein the plurality of servo tracks are recorded via independently controllable and magnetically isolated magnetic recording head channels using electrical current pulses comprising different functions of time from one channel to another.54. Magnetic tape media comprising:a plurality of servo tracks, each having a timing-based servo pattern written thereon;wherein the plurality of servo tracks are recorded via independently controllable and magnetically isolated magnetic recording head channels using electrical current pulses comprising different time signatures from one channel to another.55. Magnetic tape media comprising:a plurality of servo tracks, each having a timing-based servo pattern written thereon;wherein the plurality of servo tracks comprise magnetic transitions ...

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Номер записи: 33

10-10-2013 дата публикации

EFFICIENT ACCESS TO STORAGE DEVICES WITH USAGE BITMAPS

Номер: US20130265861A1

Автор: Dietrick John R., Mehra Karan, Verma Surendra

Принадлежит:

Upon receiving a request to allocate a storage region, a storage device may initialize the contents of the storage device to default values (e.g., zero) in order to avoid problems arising from unknown data stored in the locations of the storage region (e.g., upon writing a data set to a location involved in a mirroring relationship, uninitialized data in the corresponding mirror location may result in a mismatch that jeopardizes the written data). However, initializing the storage device may be time-consuming and inefficient. Instead, a usage bitmap may be generated that, for respective location sets of the storage region, indicates whether values exist in the location. A read request may be fulfilled by examining the usage bitmap to determine whether values exist in the specified location, and if not, the default value may be returned without accessing the storage device. Other efficiencies may also be achieved using the usage bitmap. 2. The method of the storage set comprising:at least two storage regions, anda usage bitmap array comprising usage bitmaps respectively storing indications of values existing in respective locations of a storage region.3. The method of claim 1 , the instructions configured to claim 1 , upon receiving an allocation request to generate the storage region claim 1 , refrain from initializing the storage region.4. The method of claim 1 , calculating the parity value comprising: reading stored data values that are stored at other data locations of the location set, and', 'calculating the parity value using the stored data values and the data values of the write request; and, 'if the usage bitmap indicates data values existing at locations of the location setif the usage bitmap does not indicate values existing at the location set, calculating the parity value using the data values of the write request and default values for other data locations of the location set.5. The method of :at least one unwritten location of the location set not ...

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Номер записи: 34

10-10-2013 дата публикации

EFFICIENT ACCESS TO STORAGE DEVICES WITH USAGE BITMAPS

Номер: US20130265862A1

Автор: Dietrick John R., Mehra Karan, Verma Surendra

Принадлежит:

Upon receiving a request to allocate a storage region, a storage device may initialize the contents of the storage device to default values (e.g., zero) in order to avoid problems arising from unknown data stored in the locations of the storage region (e.g., upon writing a data set to a location involved in a mirroring relationship, uninitialized data in the corresponding mirror location may result in a mismatch that jeopardizes the written data). However, initializing the storage device may be time-consuming and inefficient. Instead, a usage bitmap may be generated that, for respective location sets of the storage region, indicates whether values exist in the location. A read request may be fulfilled by examining the usage bitmap to determine whether values exist in the specified location, and if not, the default value may be returned without accessing the storage device. Other efficiencies may also be achieved using the usage bitmap. 2. The method of the storage set comprising:at least two storage regions, anda usage bitmap array comprising usage bitmaps respectively storing indications of values existing in respective locations of a storage region.3. The method of claim 1 , the instructions configured to claim 1 , upon receiving an allocation request to generate the storage region claim 1 , refrain from initializing the storage region.4. The method of claim 1 , at least one location set comprising:at least two data locations respectively storing a data value, andat least one parity location respectively storing a parity value of the data values of the data locations.5. The method of claim 4 , the instructions configured to claim 4 , upon receiving a write request to write at least one data value to respective locations of a location set:write the data values to the data locations;calculate a parity value for the location set;store the parity value at the parity location for the location set; andupdate the usage bitmap to indicate values existing at the locations ...

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Номер записи: 35

24-10-2013 дата публикации

SERVO PATTERN BY MICROWAVE ASSISTED MAGNETIC RECORDING, PERPENDICULAR MAGNETIC RECORDING MEDIUM, MAGNETIC STORAGE DEVICE AND METHOD FOR MANUFACTURING THE SAME

Номер: US20130279039A1

Автор: SHIROISHI Yoshihiro

Принадлежит: HITACHI , LTD.

Disclosed is a technique of providing a perpendicular magnetic recording medium in which high-quality servo information enabling high-density recording of 500 kTPI or more is recorded, and a magnetic storage device of an adaptive track formatting type having large capacity, high reliability and high performance with high device manufacturing yield. At a servo area of the perpendicular magnetic recording medium, a servo sequence such as a burst pattern for positioning in a servo track is recorded in a seamless manner without big recording footprint (several times longer than the servo bit) and in a magnetization pattern such that a total amount of the recording magnetization is substantially zero. 1. A servo information recording method for recording servo-related information on a perpendicular magnetic recording medium by a magnetic head , the servo-related information including a servo sequence that provides positioning information made up of a seamless pattern having recording footprint in size that can be substantially ignored and having a total amount of recording magnetization that is substantially zero , the magnetic head including: a recording magnetic pole generating recording magnetic field; a high-frequency oscillation element provided in a recording gap of the recording magnetic pole and generating high-frequency magnetic field; a magnetic reproduction element that reads information from a magnetic recording medium; and a TFC element that adjusts clearance between the high-frequency generation element and a magnetic recording medium , the method comprising the steps of:a first step of performing recording/reproducing of servo information on the perpendicular magnetic recording medium while changing a combination of a value of first current that generates the recording magnetic field and a value of second current that generates the high-frequency magnetic field, thus deciding a combination of a value of the first current and a value of the second current, ...

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Номер записи: 36

07-11-2013 дата публикации

METHOD AND SYSTEM FOR MITIGATING ADJACENT TRACK ERASURE IN HARD DISK DRIVES

Номер: US20130293980A1

Автор: KELKAR Bhooshan P., NAGPAL Abhinay R., PATIL Sandeep R.

Принадлежит:

A method, system, and computer program product for mitigating adjacent track erasures in hard disks, includes: determining input/output (I/O) characteristics for a plurality of blocks on a hard disk; assigning the plurality of blocks to a plurality of categories of I/O characteristics by the processor; and clustering content of the blocks assigned to the same category in one or more continuous tracks on the hard disk. Each block is assigned to one category. Blocks with similar I/O characteristics are clustered on one or more continuous tracks. By performing this clustering, blocks with a high number of I/O operations are grouped and stored on fewer tracks than if they were scattered across numerous tracks. This reduces the number of tracks experiencing a high number of I/O operations, and in turn, the amount of refreshing of adjacent tracks is reduced. 1. A method implemented by a computing device for mitigating adjacent track erasures in hard disks , the computing device operationally coupled to a processor , the method comprising:determining input/output (I/O) characteristics for a plurality of blocks on a hard disk by the processor;assigning the plurality of blocks to a plurality of categories of I/O characteristics by the processor; andclustering content of the blocks assigned to the same category in one or more continuous tracks on the hard disk by the processor.2. The method of claim 1 , wherein the determining the I/O characteristics for the plurality of blocks on the hard disk by the processor comprises: determining secure deletion requirements for the plurality of blocks on the hard disk by the processor claim 1 , the secure deletion requirements comprising overwriting rates for the plurality of blocks;wherein the assigning the plurality of blocks to the plurality of categories of I/O characteristics by the processor comprises: assigning the plurality of blocks to a plurality of categories associated with the overwriting rates; andwherein the clustering the ...

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Номер записи: 37

07-11-2013 дата публикации

SMART OPTIMIZATION OF TRACKS FOR CLOUD COMPUTING

Номер: US20130293981A1

Автор: KELKAR Bhooshan P., NAGPAL Abhinay R., PATIL Sandeep R.

Принадлежит:

Optimization of tracks on a hard disk includes: determining I/O characteristics for data clusters to be stored on the hard disk; generating a set of solutions for each possible placement configuration; for each solution, calculating a plurality of cost functions using the I/O characteristics for the plurality of data clusters; for each solution, calculating a membership value using the cost function values; for each solution, calculating a fitness value using the membership value; retaining the solutions with the fitness value greater than a predetermined threshold; determining whether at least one stopping condition has been met; if not, adding new solutions to the retained solutions to generate the next set of solutions; and repeating the calculating the membership value, the calculating the fitness value, and the retaining the solutions with the fitness value greater than the predetermined threshold until at least one stopping condition has been met. 1. A method for optimization of tracks on a hard disk , comprising:determining I/O characteristics for a plurality of data clusters to be stored on the hard disk;determining a plurality of costs of operation of the hard disk for a plurality of possible placement configurations of the plurality of data clusters, wherein the determining uses the I/O characteristics for the plurality of data clusters; anddetermining an optimal placement map for the plurality of data clusters from the plurality of costs of operation.2. The method of claim 1 , wherein the determining the plurality of costs of the operation of the hard disk for the plurality of possible placement configurations of the plurality of data clusters comprises:generating a set of solutions for a possible placement configuration; andfor each solution, calculating a cost function value for a plurality of cost functions.3. A computer program product for optimization of tracks on a hard disk claim 1 , the computer program product comprising: determine I/O ...

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Номер записи: 38

05-12-2013 дата публикации

Apparatus and method for high speed visualization of audio stream in an electronic device

Номер: US20130325154A1

Автор: Kyung-Seok Oh, Sang-Hoon Oh, Yong-Sun Choi

Принадлежит: SAMSUNG ELECTRONICS CO LTD

An electronic device and a method for high speed visualization of an audio stream are provided. The method of operating the electronic device includes extracting only header information from at least one frame included in a specific audio file, extracting a global gain value, which is an average volume of respective frames, by using the extracted frame header information, filtering the extracted global gain value, and displaying the filtered value.

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Номер записи: 39

02-01-2014 дата публикации

SYSTEMS AND METHODS FOR READING AND DECODING ENCODED DATA FROM A STORAGE DEVICE

Номер: US20140002918A1

Автор: Burd Gregory, Chaichanavong Panu, Sheng Hongying

Принадлежит:

Systems and methods of reading data from a storage device are provided. A first codeword and a second codeword are read from a storage device, where the second codeword is positioned after the first codeword. The first and second codewords are decoded in parallel, and the decoding of the second codeword completes before the decoding of the first codeword completes. The decoded second codeword and a signal indicating whether the decoding of the second codeword is complete are transmitted to control circuitry before the decoding of the first codeword completes. 1. A method of reading data from a storage device , the method comprising:reading a first codeword and a second codeword from the storage device, wherein the second codeword is positioned on the storage device after the first codeword;decoding the first codeword and the second codeword in parallel, wherein the decoding of the second codeword completes before the decoding of the first codeword completes; andtransmitting, to control circuitry, before the decoding of the first codeword completes, the decoded second codeword and a signal indicating whether decoding of the second codeword is complete, wherein the signal indicates a position of the second codeword with respect to the first codeword.2. The method of claim 1 , wherein the signal indicating whether decoding of the second codeword is complete includes a tag identifying the position of each codeword with respect to other codewords in the storage device.3. The method of further comprising the control circuitry transmitting an input signal claim 1 , to the storage device claim 1 , initiating the first codeword and the second codeword to be read from the storage device claim 1 , wherein the input signal includes a tag identifying the order in which the first codeword and the second codeword are to be decoded.4. The method of claim 1 , further comprising the control circuitry storing the second codeword in a memory unit once the second codeword has been ...

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Номер записи: 40

09-01-2014 дата публикации

CONTROL METHOD AND SYSTEM

Номер: US20140009850A1

Автор: Daikokuya Hidejirou, Igashira Atsushi, Ikeuchi Kazuhiko, Kobayashi Kenji, Kubota Norihide, Maeda Chikashi, Tsukahara Ryota, Watanabe Takeshi

Принадлежит: FUJITSU LIMITED

A control method of controlling a disk storage unit, includes: obtaining, by a computer, for a plurality of sectors allocated on a disk included in the disk storage unit, track identifying information that identifies a track to which sectors belong, in a first order starting from a first start sector; and storing, if first track identifying information obtained in a first sector of the plurality of sectors does not match second track identifying information obtained in a second sector of the plurality of sectors immediately before the first sector, a data length from the first start sector to the second sector in a storage unit. 1. A control method of controlling a disk storage unit , comprising:obtaining, by a computer, for a plurality of sectors allocated on a disk included in the disk storage unit, track identifying information that identifies a track to which sectors belong, in a first order starting from a first start sector; andstoring if first track identifying information obtained in a first sector of the plurality of sectors does not match second track identifying information obtained in a second sector of the plurality of sectors immediately before the first sector, a data length from the first start sector to the second sector in a storage unit.2. The control method according to claim 1 , further comprising:obtaining, for the plurality of sectors, disk plane identifying information that identifies a disk plane to which sectors belong, in a second order starting from a second start sector; andstoring, if disk plane identifying information obtained in a third sector of the plurality of sectors does not match disk plane identifying information obtained in a fourth sector of the plurality of sectors immediately before the first sector, a data length from the second start sector to the second sector in the storage unit.3. The control method according to claim 1 , wherein the first order is an ascending order or a descending order of serial numbers assigned to ...

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Номер записи: 41

16-01-2014 дата публикации

System, method and apparatus for selection of reserved area data tracks

Номер: US20140016224A1

Автор: Takeshi Shikama, Toshiroh Unoki

Принадлежит: HGST NETHERLANDS BV

Selection of disk drive data tracks for the location of reserved area include providing a media disk with data tracks comprising a user data region. A location is assessed on the media disk with a highest frequency of adjacent track interference and far track interference-refresh potential. The location is then configured to be a reserved area where no user data is written. The reserved area has parameters that are read out first before the disk drive enters an operation enabled state for user interface.

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Номер записи: 42

23-01-2014 дата публикации

Timing-based servo for determining lateral head velocity

Номер: US20140022667A1

Автор: Allen K. Bates, Daniel J. Winarski, Nhan X. Bui, Nils Haustein, Stephen L. Schwartz

Принадлежит: International Business Machines Corp

A servo track has identical servo pattern frames including two pairs of parallel magnetic transitions, the transitions of each pair spaced apart an equal distance, the transitions of the first pair at an azimuth angle to the longitudinal axis of the tape, the transitions of the second pair at an opposite azimuth angle. A servo channel receives signals at first times corresponding to when a servo read head detects the first and second transitions of the first pair of parallel transitions of a servo pattern frame, and second times corresponding to when the servo read head detects the first and second transitions of the second pair of parallel transitions. The servo channel determines a relative lateral movement and velocity between the tape and the tape head based on the azimuth angle and the ratio of the difference of the first and the difference of the second times.

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Номер записи: 43

30-01-2014 дата публикации

Disk storage apparatus and data protection method

Номер: US20140029126A1

Автор: Takayuki Kawabe, Tatsuo Nitta

Принадлежит: Toshiba Corp

A disk storage apparatus according to one embodiment includes a head, a storage device, a write module and a controller. The head writes data on a disk. The storage device has a storage area for temporarily storing the data written by the head. The write module writes data to tracks on a disk, while partially overlapping the data with previously written data to adjacent track. The controller detects a drift-off write of the head while writing data, determines a drift-off write area in which the drift-off write is occurred, and protects the data written in the storage area, if the data is written in the drift-off write area.

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Номер записи: 44

06-02-2014 дата публикации

ROBUST METRIC COMPUTATION OF LONGITUDINAL POSITION (LPOS) DATA SYMBOL DETECTION

Номер: US20140036382A1

Автор: Cherubini Giovanni, Hutchins Robert A., JELITTO Jens

Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

An apparatus according to one embodiment includes a digital correlator configured to compute a correlation signal between a sequence of samples of a readback servo signal and a reference waveform. A timing reference module is configured to provide a reference timing model comprising one or more interpolation instants to the digital correlator, wherein the correlation signal determined at each interpolation instant yields a detection metric for one data symbol. A correlation interpolator is configured to interpolate the correlation signal at the interpolation instants and compute a longitudinal position (LPOS) detection metric according to the interpolated correlation signal samples. 1. An apparatus , comprising:a digital correlator configured to compute a correlation signal between a sequence of samples of a readback servo signal and a reference waveform:a timing reference module configured to provide a reference timing model comprising one or more interpolation instants to the digital correlator, wherein the correlation signal determined at each interpolation instant yields a detection metric for one data symbol; anda correlation interpolator configured to interpolate the correlation signal at the interpolation instants and compute a longitudinal position (LPOS) detection metric according to the interpolated correlation signal samples.2. The apparatus as recited in claim 1 , further comprising a servo signal interpolator configured to provide a sequence of interpolated samples from the sequence claim 1 , wherein the digital correlator is configured to compute a correlation signal between the sequence of interpolated correlation signal samples and the reference waveform.3. The apparatus as recited in claim 2 , wherein the servo signal interpolator produces an interpolated servo signal having about a constant data sample rate per unit length of a magnetic tape.4. The apparatus as recited in claim 1 , wherein a signal-to-distortion ratio of the LPOS detection metric ...

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Номер записи: 45

13-02-2014 дата публикации

INFORMATION RECORDING APPARATUS, INFORMATION PLAYBACK APPARATUS, AND FORMATTING METHOD

Номер: US20140043949A1

Автор: Kuroda Sumio, Ogi Kouichi, SAKAI Yuji, Shimomura Kazuhito, Suzuki Kenichiro

Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, an information recording apparatus includes a divider, a generator, and a recorder. The divider is configured to divide recording data into a plurality of recording data blocks for each predetermined recording unit. The generator is configured to set, as a first block set, n recording data blocks recorded in corresponding areas in file system management areas of n, first to nth (n: integer, n≧2) storages, and generate first parity data from the n recording data blocks forming the first block set. The recorder is configured to record the n recording data blocks forming the first block set and the first parity data. 1. An information recording apparatus comprising:a divider configured to divide recording data into a plurality of recording data blocks for each predetermined recording unit;a generator configured to set, as a first block set, n recording data blocks recorded in corresponding areas in file system management areas of n, first to nth (n: integer, n≧2) storages, and generate first parity data from the n recording data blocks forming the first block set; anda recorder configured to record the n recording data blocks forming the first block set in first areas in the file system management areas of the n storages out of corresponding first areas in the file system management areas of the n storages and one storage, and record the first parity data in the first area in the file system management area of the one storage,wherein the generator is configured to extract, from the plurality of recording data blocks, n recording data blocks for forming the first block set, and configured to, when m (m: integer, m≧1) recording data blocks smaller in number than the n recording data blocks remain, generate temporary parity data based on the remaining m recording data blocks, andthe recorder is configured to record the remaining m recording data blocks in corresponding second areas in the file system management areas of m storages out of the n ...

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Номер записи: 46

13-02-2014 дата публикации

Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method

Номер: US20140044176A1

Автор: Kazuhiko Nakane, Masaaki Shimada, Tomoaki Ryu, Yoshihisa Yamada

Принадлежит: Mitsubishi Electric Corp

Access point pictures designated as randomly accessible positions are I pictures or P pictures. Information indicating the decoding sequence (I 1 , P 1 , B 1 , B 2 , B 3 , B 4 , P 2 , . . . ) of pictures functioning as access points and attribute information (picture_type) indicating whether a picture functions as an access point or is necessary for decoding of the access point following a given access point are recorded on the video information recording medium. Random access is possible even if the GOP interval is lengthened.

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Номер записи: 47

13-02-2014 дата публикации

Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method

Номер: US20140044408A1

Автор: Kazuhiko Nakane, Masaaki Shimada, Tomoaki Ryu, Yoshihisa Yamada

Принадлежит: Mitsubishi Electric Corp

Access point pictures designated as randomly accessible positions are I pictures or P pictures. Information indicating the decoding sequence (I1, P1, B1, B2, B3, B4, P2, . . . ) of pictures functioning as access points and attribute information (picture_type) indicating whether a picture functions as an access point or is necessary for decoding of the access point following a given access point are recorded on the video information recording medium. Random access is possible even if the GOP interval is lengthened.

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Номер записи: 48

13-02-2014 дата публикации

Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method

Номер: US20140044410A1

Автор: Kazuhiko Nakane, Masaaki Shimada, Tomoaki Ryu, Yoshihisa Yamada

Принадлежит: Mitsubishi Electric Corp

Access point pictures designated as randomly accessible positions are I pictures or P pictures. Information indicating the decoding sequence (I 1 , P 1 , B 1 , B 2 , B 3 , B 4 , P 2 , . . . ) of pictures functioning as access points and attribute information (picture_type) indicating whether a picture functions as an access point or is necessary for decoding of the access point following a given access point are recorded on the video information recording medium. Random access is possible even if the GOP interval is lengthened.

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Номер записи: 49

13-02-2014 дата публикации

Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method

Номер: US20140044419A1

Автор: Kazuhiko Nakane, Masaaki Shimada, Tomoaki Ryu, Yoshihisa Yamada

Принадлежит: Mitsubishi Electric Corp

Access point pictures designated as randomly accessible positions are I pictures or P pictures. Information indicating the decoding sequence (I 1 , P 1 , B 1 , B 2 , B 3 , B 4 , P 2 , . . . ) of pictures functioning as access points and attribute information (picture_type) indicating whether a picture functions as an access point or is necessary for decoding of the access point following a given access point are recorded on the video information recording medium. Random access is possible even if the GOP interval is lengthened.

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Номер записи: 50

20-02-2014 дата публикации

Optical disc and optical disc device

Номер: US20140050059A1

Автор: Hironori Nakahara, Masaharu Ogawa, Nobuo Takeshita

Принадлежит: Mitsubishi Electric Corp

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

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Номер записи: 51

20-02-2014 дата публикации

Optical disc and optical disc device

Номер: US20140050065A1

Автор: Hironori Nakahara, Masaharu Ogawa, Nobuo Takeshita

Принадлежит: Mitsubishi Electric Corp

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

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Номер записи: 52

20-02-2014 дата публикации

Optical disc and optical disc device

Номер: US20140050071A1

Автор: Hironori Nakahara, Masaharu Ogawa, Nobuo Takeshita

Принадлежит: Mitsubishi Electric Corp

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

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Номер записи: 53

20-02-2014 дата публикации

Optical disc and optical disc device

Номер: US20140050072A1

Автор: Hironori Nakahara, Masaharu Ogawa, Nobuo Takeshita

Принадлежит: Mitsubishi Electric Corp

In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.

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Номер записи: 54

27-02-2014 дата публикации

DATA ADAPTERS FOR STORAGE TAPE ANALYTICS SYSTEM

Номер: US20140055880A1

Автор: Jhatakia Jitesh Bakul, Rainsbury Quentin Lee, Wharton Cathleen Susan

Принадлежит: ORACLE INTERNATIONAL CORPORATION

A system for monitoring and analyzing operation of a tape infrastructure. The system includes a plurality of real and virtual tape libraries each including a plurality of tape drives and tape media. The system includes a server linked to the tape library. On the server, a storage tape analytics application is provided that functions to extract raw data sets from the tape library corresponding to operations of the tape library. The data pertains to use of the drives and media during data storage operations and data about the activities of the real or virtual tape libraries. The analytics application stores the extracted data sets in an analytics database. The analytics application provides a user interface for viewing data in the analytics database, e.g., a GUI operable by monitoring personnel to view and interact with the gathered and processed tape operations monitoring data to provide historical and user-driven analysis of data for an entire data center. 1. A data storage system for monitoring and analysis of a tape infrastructure , comprising:a tape library comprising a plurality of tape drives and a plurality of tape media for use in the tape drives;a server communicatively linked to the tape library;a tape analytics database provided in a data storage device; andon the server, a storage tape analytics application with a data adapter receiving and requesting data sets from the tape library,wherein the data sets correspond to operations of the tape library including use of the tape drives and the tape media during data storage in the tape library andwherein the data adapter stores the data sets in the tape analytics database.2. The data storage system of claim 1 , wherein the data sets include data about robotic actions to: mount media into the tape drives; dismount media from the tape drives; and move media inside claim 1 , into claim 1 , or out of the automated tape libraries claim 1 , the extracted data sets further including data about activity of the tape ...

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Номер записи: 55

06-03-2014 дата публикации

Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method

Номер: US20140064702A1

Автор: Kazuhiko Nakane, Masaaki Shimada, Tomoaki Ryu, Yoshihisa Yamada

Принадлежит: Mitsubishi Electric Corp

Access point pictures designated as randomly accessible positions are I pictures or P pictures. Information indicating the decoding sequence (I1, P1, B1, B2, B3, B4, P2, . . . ) of pictures functioning as access points and attribute information (picture_type) indicating whether a picture functions as an access point or is necessary for decoding of the access point following a given access point are recorded on the video information recording medium. Random access is possible even if the GOP interval is lengthened.

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Номер записи: 56

13-03-2014 дата публикации

Optical information recording device and method

Номер: US20140071799A1

Автор: Junya IIZUKA

Принадлежит: Hitachi Consumer Electronics Co Ltd

In an optical information recording device and optical information recording method for angularly multiplexing and recording data on pages on the same recording region on a hologram disk, data on each page is sequentially generated by sequentially dividing input data in predetermined units, the pages to be recorded on the same recording region are divided into page groups so that pages to be recorded adjacently by the angular multiplexing may not belong to the same group, each page group is individually subjected to inter-page coding processing for computing an error-correcting code and adding the computed error-correcting code, and data on the pages subjected to the inter-page coding processing is angularly multiplexed and recorded on the hologram disk.

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Номер записи: 57

10-04-2014 дата публикации

Recording control device and method

Номер: US20140098655A1

Автор: Tomotaka Kuraoka

Принадлежит: Sony Corp

There is provided a recording control device including a recording control section which controls data recording to a recording medium by irradiating laser light to the recording medium, and a division section which divides the sequential recording range of a prescribed recording layer, near a boundary of two mutually adjacent sequential recording ranges of the recording layer on a back side of the prescribed recording layer when viewed from a laser incident surface of the recording medium, in a case where data is not recorded to an area of one of the two sequential recording ranges, by setting, as a division position in the prescribed recording layer, a position separated by only a prescribed distance, from a position identical to a position of the boundary, on the other side of the two sequential recording ranges in a direction connecting a center and outer peripheral of the recording medium.

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Номер записи: 58

01-01-2015 дата публикации

DISK STORAGE APPARATUS AND METHOD FOR MANAGING STORAGE AREA

Номер: US20150002957A1

Автор: KAWANA Naoaki, TAKEDA Shingo

Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a disk storage apparatus includes a disk having a storage area, a storage device storing management information, and a controller. The storage area includes a plurality of areas. The management information includes information indicative of a use priority or rank of each of the areas. The information indicative of the use priority or rank is set based on a quality index relating to a read operation or a write operation. The controller selects an area which is high in the use priority or rank and is usable, by referring to the management information, and executes the write operation on the selected area. 1. A disk storage apparatus comprising:a disk comprising a storage area having a plurality of areas;a storage device configured to store management information including information indicative of a use priority or rank of each of the areas, the information indicative of the use priority or rank being set based on a quality index relating to a read operation or a write operation; anda controller configured to select an area which is high in the use priority or rank and is usable, by referring to the management information, and to execute the write operation on the selected area.2. The disk storage apparatus of claim 1 , wherein the controller is further configured to:select areas in descending order in the use priority or rank;determine, based on the management information, whether normal use of each of the selected areas as a storage area is permitted; andexecute an additional process for enhancing reliability of a corresponding area and execute the write operation when the normal use of the corresponding area is inhibited.3. The disk storage apparatus of claim 2 , wherein the management information is generated in a manufacturing process of the disk storage apparatus claim 2 , and is stored in the storage device.4. The disk storage apparatus of claim 2 , wherein the controller is further configured to select an area comprising a free ...

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Номер записи: 59

02-01-2020 дата публикации

Tape drive configuration

Номер: US20200004467A1

Автор: Carl R. Hoerger, Curtis C. Ballard

Принадлежит: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

A method comprising: determining, by a tape library, respective tape densities supported by each of a plurality of tape drives and respective tape densities indicated for each of a plurality of tape cartridges; receiving, by the tape library, a command to load a given one of the tape cartridges into a given one of the tape drives; determining, by the tape library, that the indicated tape density for the given tape cartridge matches a tape density supported by the given tape drive; and in response to the determination that the tape densities match, configuring, by the tape library, the given tape drive to initialize the given tape cartridge to the tape density indicated for the given tape cartridge.

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Номер записи: 60

07-01-2016 дата публикации

WRITING DATA TO A TAPE

Номер: US20160005434A1

Автор: Buckingham Jonathan Peter, Jibry Rafel

Принадлежит:

A method of writing data to a tape on which during a write operation successive data unit groups that comprise a plurality N of data units are written across the tape as N track portions to form N data tracks that extend in a lengthways direction of the tape. The method includes identifying data units written during the write operation that need to be rewritten and writing a rewrite data unit group that contains data units identified as needing to be rewritten. The rewrite data unit group has N track portions written across the tape to form a part of the data tracks. The N track portions contain N-n data units identified as needing to be rewritten and data unit identifier information comprising respective data unit identifiers for the N-n data units contained in at least one list of data unit identifiers. N and n are positive integers. 1. A method of writing data to a tape on which during a write operation successive data unit groups that each comprise a plurality N of data units are written across the tape in N track portions to form N data tracks that extend in a lengthways direction of the tape , the method comprising:identifying data units written during the write operation that need to be rewritten; andwriting a rewrite data unit group that comprises N track portions written across the tape to form a part of the N data tracks,wherein the N track portions of the rewrite data unit group contain N-n data units identified as needing to be rewritten, where n is a positive integer value, and data unit identifier information comprising respective data unit identifiers for the N-n data units, andwherein the data unit identifier information is written in at least one identifier information unit that contains a list of data unit identifiers.2. A method of writing data to a tape as claimed in claim 1 , wherein n equals 1.3. A method of writing data to a tape as claimed in claim 1 , wherein there is at least one identifier information unit that contains a list of the ...

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Номер записи: 61

02-01-2020 дата публикации

RECORD CONTROL APPARATUS

Номер: US20200005829A1

Автор: Hasegawa Takuya, HAYAKAWA Kazuaki

Принадлежит:

A record control apparatus controls record of a data item in one or more record sections. The record control apparatus includes: a data acquisition section that acquires the data item having multiple types; a data storage section that stores in the record section, the one or more data items matching a record condition prepared in advance among the acquired data item having multiple types; and a condition change section that defines the record condition as an old record condition, and sets so that the data storage section utilizes a new record condition in place of the old record condition when receiving the new record condition different from the old condition from an outside. 1. A record control apparatus configured to control a record of a data item in one or more record sections , the record control apparatus comprising:a data acquisition section configured to acquire the data item having a plurality of types;a data storage section configured to store in the one or more record sections, the one or more data items matching a record condition prepared in advance among the acquired data item having the plurality of types; define the record condition as an old record condition, and', 'set so that the data storage section utilizes a new record condition in place of the old record condition when receiving the new record condition different from the old condition from an outside;, 'a condition change section configured to'}a time transmission section configured to transmit reference time information to a partner apparatus, wherein the partner apparatus corresponds to a communication counterpart of the record control apparatus, and returns response data item obtained by applying information to be transmitted by the partner apparatus to the reference time information when receiving the reference time information indicating a time managed by the record control apparatus; and acquire the response data item, and', 'set a generation time of the response data item based on the ...

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Номер записи: 62

07-01-2016 дата публикации

Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method

Номер: US20160006976A1

Автор: Kazuhiko Nakane, Masaaki Shimada, Tomoaki Ryu, Yoshihisa Yamada

Принадлежит: Mitsubishi Electric Corp

Access point pictures designated as randomly accessible positions are I pictures or P pictures. Information indicating the decoding sequence (I 1 , P 1 , B 1 , B 2 , B 3 , B 4 , P 2 , . . . ) of pictures functioning as access points and attribute information (picture_type) indicating whether a picture functions as an access point or is necessary for decoding of the access point following a given access point are recorded on the video information recording medium. Random access is possible even if the GOP interval is lengthened.

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Номер записи: 63

08-01-2015 дата публикации

Variable bit aspect ratios in magnetic media

Номер: US20150009787A1

Автор: Edward Charles Gage, Tim Rausch

Принадлежит: SEAGATE TECHNOLOGY LLC

An apparatus comprises a write transducer, an energy source, and a controller. The write transducer is configured to write data to a magnetic recording medium, and the energy source is configured to heat the magnetic recording medium while it is being written to by the write transducer. The controller is coupled to the write transducer and configured to adjust at least an operating power of the energy source to selectably cause bits having variable bit aspect ratios to be written to the magnetic media.

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Номер записи: 64

27-01-2022 дата публикации

DATA STORAGE DEVICE DYNAMICALLY RELOCATING DATA SECTORS BASED ON MAP-OUT VALUE

Номер: US20220027226A1

Автор: Lamberts Bernd, Pit Remmelt, SRIVASTAVA Abhishek, Venkatesh Karthik, Zayed Ammar A.

Принадлежит:

A data storage device is disclosed comprising a non-volatile storage medium (NVSM) having a plurality of data sectors and a plurality of reserve sectors. A map-out value is generated for each of a first plurality of the data sectors based on a read latency of each of the first plurality of data sectors, and when the map-out value of a first data sector in the first plurality of data sectors exceeds a threshold, a first logical block address (LBA) is mapped from the first data sector to a first reserve sector. When the map-out value of a second data sector in the first plurality of data sectors exceeds the map-out value of the first data sector, the first LBA is mapped from the first reserve sector back to the first data sector, and a second LBA is mapped from the second data sector to the first reserve sector. 1. A data storage device comprising:a non-volatile storage medium (NVSM); and define a plurality of data sectors and a plurality of reserve sectors in the NVSM;', 'generate a map-out value for each of a first plurality of the data sectors based on a read latency of each of the first plurality of data sectors;', 'when the map-out value of a first data sector in the first plurality of data sectors exceeds a threshold, map a first logical block address (LBA) from the first data sector to a first reserve sector;', 'when the map-out value of a second data sector in the first plurality of data sectors exceeds the map-out value of the first data sector:', 'map the first LBA from the first reserve sector back to the first data sector; and', 'map a second LBA from the second data sector to the first reserve sector., 'control circuitry configured to2. The data storage device as recited in claim 1 , wherein the control circuitry is further configured to update the map-out value of at least the second data sector.3. The data storage device as recited in claim 2 , wherein the control circuitry is further configured to:detect a grown defect in the NVSM; andwhen the grown ...

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Номер записи: 65

12-01-2017 дата публикации

MAGNETIC DISK DEVICE AND METHOD OF CONTROLLING MAGNETIC DISK DEVICE

Номер: US20170011769A1

Автор: AOKI Shoichi, Shang Jun

Принадлежит:

According to one embodiment, first data is written into a first storage area with a shingled write recording scheme. A verification process is performed. The verification process includes reading second data and checking whether or not a read error has occurred. The second data is partial data of the first data written into the first storage area and is data written into a sector of the first track that is adjacent to a sector of the second track for which writing has completed. 1. A magnetic disk device comprising:a magnetic head;a magnetic disk that includes a first storage area for which recording is performed with a first recording scheme by the magnetic head, the first recording scheme including repetitive overlapping of a part of a second track with a first track, the second track being adjacent to the first track; anda controller configured to:write first data into the first storage area with the first recording scheme; andperform a verification process, the verification process including reading second data and checking whether or not a read error has occurred, the second data being partial data of the first data written into the first storage area and being data written into a sector of the first track that is adjacent to a sector of the second track for which writing has completed.2. The magnetic disk device according to claim 1 , wherein the controller performs the verification process after a size of the first data written in the first storage area reaches a first size.3. The magnetic disk device according to claim 2 , wherein the second data has a second size smaller than the first size.4. The magnetic disk device according to claim 3 , wherein the second size is determined based on the number of third tracks at a time when the size of the first data written in the first storage area reaches the first size and an influence of an adjacent track interference claim 3 , the third tracks being the first tracks and to which a write process for all sectors of ...

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Номер записи: 66

12-01-2017 дата публикации

RECORDING MEDIUM, PLAYBACK DEVICE, AND PLAYBACK METHOD

Номер: US20170011770A1

Автор: Yahata Hiroshi

Принадлежит:

A recording medium records data including a digital stream where video information has been encoded. A recording region of the recording medium has a first recording region where reading is performed at a first read rate, and a second recording region where reading is performed at a second read rate that is faster than the first read rate. The data is classified into digital stream data having a real-time attribute and a data file having a non-real-time attribute in a file system of the data. The digital stream is not continuously recorded spanning a boundary between the first recording region and the second recording region. The data file is permitted to be continuously recorded spanning the boundary. 1. A recording medium , in which data is recorded , the data including a digital stream where video information has been encoded ,wherein a recording region of the recording medium has a first recording region where reading is performed at a first read rate, and a second recording region where reading is performed at a second read rate that is faster than the first read rate,wherein the data is classified into digital stream data having a real-time attribute and a data file having a non-real-time attribute in a file system of the data,wherein the digital stream is not continuously recorded spanning a boundary between the first recording region and the second recording region,and wherein the data file is permitted to be continuously recorded spanning the boundary.2. The recording medium according to claim 1 ,wherein the file system is Universal Disk Format (UDF),and wherein the digital stream is a file where a value of a filter type field of the digital stream is 249.3. The recording medium according to claim 1 ,wherein the recording medium is a disc recording medium,and wherein read control at the time of reading differs between the first recording region and the second recording region.4. A playback device comprising:a reading unit that reads data recorded in a ...

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Номер записи: 67

14-01-2016 дата публикации

METHOD OF MANAGING, WRITING, AND READING FILE ON TAPE

Номер: US20160012073A1

Автор: Ashida Takashi, HASEGAWA Tohru, Itagaki Hiroshi, Mitsuma Machida, Watanabe Terue

Принадлежит:

Managing a file on a tape. In response to a request to write a first file to a tape, whether a second file including data identical to the first file already exists on the tape is detected. If the second file exists, a first index of the second file is updated. After completing the write of the first file, metadata, including data starting position and size of the first file, is added to the first index. In response to a request to read the first or second files, the metadata of the first and second indexes are read. Based on the metadata, which of the first or second files can be accessed faster from a current head position is determined. The first file or the second file that can be accessed faster is then read from the tape. 1. A method for managing a file on a tape in a file system , the method comprising:in response to a request to write a first file to a tape, detecting whether a second file including data identical to data of the first file already exists on the tape;if the second file exists on the tape, updating a first index of the second file; andin response to completing the write of the first file to the tape, adding metadata, including a data starting position and a size of the first file, to the first index.2. The method according to claim 1 , further comprising:writing the first file onto the tape; andcreating or updating a second index with metadata including a data starting position and a size of the first file on the tape.3. The method according to claim 2 , further comprising:writing the updated first index onto the tape; andwriting the created or updated second index onto the tape.4. The method according to claim 2 , further comprising:in response to a request to read the first file or the second file, reading the metadata of the first index and the second index;determining, based on the read metadata, which of the first file and the second file can be accessed faster from a current head position; andreading, from the tape, the first file or the ...

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Номер записи: 68

11-01-2018 дата публикации

DATA PROTECTION SYSTEM

Номер: US20180011647A1

Автор: Ayres Mark, EARHART Tod R., Loechel Will

Принадлежит:

Systems and methods for logically organizing data for storage and recovery on a data storage medium using a multi-level format are described. Embodiments include systems and methods for protecting data stored on a data storage medium so that the data may be recovered without errors. 1. A method of storing data comprising:creating a first partition in a data storage medium, the first partition comprising a first contiguous subdivision of the data storage medium within which all data is written in one format and at one density;receiving a first logical block from a host, the first logical block including first data;writing the first data to the data storage medium within the first partition;creating a first structure that describes a host defined logical block address of the first data and a physical address of the first data in the data storage medium;creating a second partition in the data storage medium, the second partition comprising a second contiguous subdivision of the data storage medium within which all data is written in one format and at one density;writing the first structure to the storage medium within the second partition.writing within the first partition, an error correction code for the first data; and writing within the second partition, an error correction code for the first structure, wherein error correction within the first partition differs from error correction within the second partition in either or both of (i) type of error correction code, and (ii) amount of data redundancy.2. The method of claim 1 , further comprising:creating a second structure that describes the host defined logical block address of the first data; andwriting the second structure to the storage medium within the first partition.3. The method of claim 2 , further comprising:creating a third partition in the data storage medium, the third partition comprising a third contiguous subdivision of the data storage medium within which all data is written in one format and at ...

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Номер записи: 69

14-01-2016 дата публикации

METHOD AND APPARATUS FOR DETERMINING READ-HEAD DEVIATION USING ORTHOGONAL PREAMBLES

Номер: US20160012842A1

Автор: Nangare Nitin

Принадлежит:

A storage device includes read circuitry having a read head having a detector that outputs signals representing data from a first track and an adjacent track. The read head is subject to off-track excursions during which the read head detects signals from both the first track and an adjacent track. Data on each track includes a preamble including a repeating pattern. The repeating pattern in any first track is orthogonal to the repeating pattern in any track adjacent to the first track. The read circuitry also includes respective Discrete Fourier Transform circuits to identify components in the signals corresponding to respective frequencies characteristic of the repeating pattern on the first track and the repeating pattern on the second track, and computation circuitry to determine from the components a ratio by which the read head is off-track. Corresponding methods are provided for operating such a storage device and for reading data. 1. A method of operating a storage device having a storage medium , the method comprising:writing data to tracks on the storage medium, data for each track including a preamble including a repeating pattern, wherein the repeating pattern in any first track is orthogonal to the repeating pattern in any track adjacent to the first track;detecting with a read head signals from both the first track and an adjacent track;analyzing preamble output of the read head to determine a ratio by which the read head is off-track.2. The method of wherein the analyzing comprises applying a Discrete Fourier Transform to the preamble output of the read head.3. The method of further comprising filtering the preamble output of the read head prior to the applying.4. The method of wherein the applying comprises applying a separate Discrete Fourier Transform for a frequency corresponding to the repeating pattern on the first track and a frequency corresponding to the repeating pattern on the adjacent track.5. The method of wherein the analyzing comprises ...

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Номер записи: 70

14-01-2016 дата публикации

DYNAMIC BAND BOUNDARIES

Номер: US20160012849A1

Автор: Feldman Timothy R.

Принадлежит: SEAGATE TECHNOLOGY LLC

Systems and methods are disclosed for dynamic band boundaries in data storage devices, particularly devices employing shingled magnetic recording. Band boundaries may be modified to include spare sectors from guard areas between bands to achieve field defect-slipping. Band boundaries can also be shifted to migrate spare sectors from one guard area to another in order to dynamically distribute spare sectors. In one embodiment, an apparatus may comprise a data storage medium and a controller. The data storage medium may have a first and second sequence of circumferentially adjacent data sectors, and a first guard area disposed between the first and second sequence such that no sector of the first sequence is directly adjacent to a sector of the second sequence. The controller may be configured to restructure the first sequence to include a sector from the first guard area to produce a shifted first sequence. 1. An apparatus comprising: a first band of multiple tracks including a first sequence of circumferentially adjacent data sectors;', 'a second band of multiple tracks including a second sequence of circumferentially adjacent data sectors;', 'a first guard area disposed between the first sequence and the second sequence such that no sector of the first sequence is directly adjacent to a sector of the second sequence, the first guard area comprising sectors not designated for storing data;, 'a data storage medium having restructure the first sequence by adjusting a boundary of the first band to include a selected sector from the first guard area to produce a shifted first sequence; and', 'designate the selected sector for storing data., 'a controller configured to2. The apparatus of further comprising the first sequence includes a plurality of data tracks configured to store data in a shingled manner where one track partially overlaps an adjacent track.3. The apparatus of further comprising: a first spare sector to replace defective sectors; and', 'isolation sectors ...

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Номер записи: 71

14-01-2016 дата публикации

BINDING SHINGLED RECORDING BANDS

Номер: US20160012850A1

Автор: Feldman Timothy R.

Принадлежит: SEAGATE TECHNOLOGY LLC

Systems and methods are disclosed for binding shingled recording bands in data storage devices, particularly devices employing shingled magnetic recording. In one embodiment, an apparatus may comprise a controller configured to define boundaries of an area of a data storage medium based on a constraint and a list of defective sectors. In another embodiment, an apparatus may comprise a data storage device including a memory configured to store data in a shingled manner where one track partially overlaps an adjacent track, and a controller configured to define boundaries of a plurality of bands, each band including a plurality of tracks of the memory, based on the results of an error discovery scan for defective sectors of the memory. 1. An apparatus comprising: perform a defect discovery scan on a data storage medium to determine defective sectors;', 'define boundaries of a writable area of a band of the data storage medium based on a constraint and defective sectors located in the band, the band including a plurality of shingled tracks of the data storage medium where one track partially overlaps an adjacent track., 'a controller configured to2. The apparatus of further comprising:the controller further configured to define boundaries of the writable area by designating a first track and a last track.3. The apparatus of further comprising: read data from the writable area;', 'modify the read data; and', 'write the modified data to the writable area., 'the constraint includes an amount of time to4. (canceled)5. The apparatus of further comprising:the constraint includes a selected number of non-defective data sectors in the writable area.6. The apparatus of further comprising: 'define the boundaries of the writable area by designating at least one guard track to separate the writable area from other writable data sectors, the at least one guard tracks not being used to store user data.', 'the controller configured to7. The apparatus of comprising the controller ...

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Номер записи: 72

14-01-2016 дата публикации

SHINGLE VERIFY ARCHIVE APPLIANCE

Номер: US20160012860A1

Автор: Biskeborn Robert G., Lo Calvin S.

Принадлежит:

An apparatus according to one embodiment includes a controller configured to control a write transducer to perform shingled writing where a currently written track is written over a portions of a previously written track thereby defining a shingled track comprising a remaining portion of the previously written track. The controller is also configured to cause reading of data from at least one shingled track during the shingled writing using a read transducer. 1. An apparatus , comprising:a controller configured to control a write transducer to perform shingled writing where a currently written track is written over a portions of a previously written track thereby defining a shingled track comprising a remaining portion of the previously written track,the controller being configured to cause reading of data from at least one shingled track during the shingled writing using a read transducer.2. The apparatus as recited in claim 1 , wherein the write transducer is positioned on a first module and the read transducer is positioned on a second module separate from the first module.3. The apparatus as recited in claim 2 , wherein the first module and the second module are independently positionable.4. The apparatus as recited in claim 2 , wherein the second module is disengageable from a tape during reading thereof and/or writing thereto.5. The apparatus as recited in claim 2 , comprising a second read transducer on a third module that is separate from the first and second modules claim 2 , wherein the controller is configured to use the read transducer to read data from the one of the shingled tracks during the shingled writing in a first direction claim 2 , wherein the controller is configured to use the second read transducer to read data from another of the shingled tracks during the shingled writing in a second direction opposite the first direction.6. The apparatus as recited in claim 1 , wherein the controller is further configured to perform read verification of ...

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Номер записи: 73

10-01-2019 дата публикации

Self-healing in a storage system

Номер: US20190013046A1

Автор: Ajay Narayan Kulkarni, Timothy R. Feldman

Принадлежит: SEAGATE TECHNOLOGY LLC

A storage system such as a hard disc drive (HDD), solid-state drive (SSD), hybrid drive (SSHD), storage rack, set of storage racks, JBOD, array of discs, etc. may include a variety of storage media. Failures may be detected in the storage media of the storage system. Such a failure may affect the physical capacity of the storage system. A storage controller of the storage system initiates a media conversion that converts a portion of the storage media from media storing data according to a first recording scheme to a media storing data according to a second recording scheme. The second recording scheme stores data at a higher density compared to the first recording scheme.

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Номер записи: 74

14-01-2021 дата публикации

MAGNETIC RECORDING MEDIUM

Номер: US20210012799A1

Автор: MAESHIMA Katsunori, TERAKAWA Masaru, YAMAGA Minoru

Принадлежит:

A tape-shaped magnetic recording medium includes a substrate; and a magnetic layer that is provided on the substrate and contains a magnetic powder. An average thickness of the magnetic layer is not more than 90 nm, an average aspect ratio of the magnetic powder is not less than 1.0 and not more than 3.0, the coercive force Hc1 in a vertical direction is not more than 3000 Oe, and the coercive force Hc1 in the vertical direction and a coercive force Hc2 in a longitudinal direction satisfy a relationship of Hc2/Hc1≤0.8. 118-. (canceled)19. A tape-shaped magnetic recording medium , comprising:a substrate;an underlayer provided on the substrate,a magnetic layer that is provided on the underlayer and contains a magnetic powder; anda back layer provided on the substrate opposite to the underlayer, whereinan average thickness of the magnetic layer is not more than 90 nm,an average aspect ratio of the magnetic powder is not less than 1.0 and not more than 3.0,a coercive force Hc1 in a vertical direction of the magnetic recording medium is not more than 3000 Oe, andthe coercive force Hc1 in the vertical direction of the magnetic recording medium and a coercive force Hc2 in a longitudinal direction satisfy a relationship of Hc2/Hc1≤0.8.20. The magnetic recording medium according to claim 19 , whereinthe magnetic layer includes a plurality of servo bands, anda ratio of a total area of the plurality of servo bands to an area of a surface of the magnetic layer is not more than 4.0%.21. The magnetic recording medium according to claim 20 , whereinthe number of the servo bands is not less than five.22. The magnetic recording medium according to claim 20 , whereinthe number of the servo bands is not less than 5+4n (where n represents a positive number).23. The magnetic recording medium according to claim 20 , whereinthe servo bands each have a width of not more than 95 μm.24. The magnetic recording medium according to claim 19 , wherein the magnetic layer is configured to be ...

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Номер записи: 75

14-01-2021 дата публикации

OPTICAL DISK RECORDING METHOD, OPTICAL DISK DEVICE, AND INTEGRATED CIRCUIT

Номер: US20210012802A1

Автор: KOKURA Takeshi, NAKAMURA Atsushi

Принадлежит:

A mark corresponding to recording data is formed on an optical disk by: encoding the recording data in accordance with a modulation code and generating encoded data; classifying the encoded data by a combination of at least two of a mark length of a mark, a space length of a preceding space, the mark length of a preceding mark, and the space length of a succeeding space; setting a correction amount for adjusting the position of the start edge and the end edge of a recording pulse based on an evaluation index of a decoding result, which is a result of decoding a reproduction signal of the encoded data, for each of the classification; and generating the recording pulse corresponding to the encoded data by using the correction amount corresponding to the classification of the run length of the encoded data. 1. An optical disk recording method for irradiating an optical disk with an optical beam to form a plurality of marks on a medium , and recording information using edge positions of each mark and a space between two adjacent marks , comprising:encoding recording data according to modulation codes to generate binary encoded data corresponding to the mark and the space;regarding run lengths of the mark and the space in the encoded data, if a mark of interest is target mark, classifying the encoded data according to a combination of at least two run lengths of a mark length of the target mark, a space length of a preceding space on a preceding side of the target mark, a mark length of a preceding mark on the preceding side of the target mark, and a space length of a succeeding space on a succeeding side of the target mark;for each classification of the run length of the encoded data, setting individual correction amounts for adjusting positions of a start edge and an end edge of a recording pulse for forming the mark, based on an evaluation index of a decoding result which is obtained when a reproduction signal obtained by reproducing the mark and space corresponding ...

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Номер записи: 76

14-01-2021 дата публикации

CARTRIDGE MEMORY, RECORDING MEDIUM CARTRIDGE, AND METHOD OF PRODUCING THE SAME

Номер: US20210012804A1

Автор: Abe Masayoshi, Adachi Naohiro, ANNO Kazuo, IWAMA Takanobu, NAKASHIO Eiji, TOCHIKUBO Shinya, YAMAGA Minoru

Принадлежит:

[Object] A cartridge memory according to an embodiment of the present technology is a cartridge memory for a recording medium cartridge, including: a memory unit; and a capacity setting unit. The memory unit has a memory capacity capable of storing management information relating to a second information recording medium configured to be capable of recording information with a second data track number larger than a first data track number. The capacity setting unit is configured to be capable of setting a data storage area limited to a first capacity capable of storing management information relating to a first information recording medium configured to be capable of recording information with the first data track number. 1. A cartridge memory for a recording medium cartridge , comprising:a memory unit that has a memory capacity capable of storing management information relating to a second information recording medium configured to be capable of recording information with a second data track number larger than a first data track number; anda capacity setting unit configured to be capable of setting, to the memory unit, a data storage area limited to a first capacity capable of storing management information relating to a first information recording medium configured to be capable of recording information with the first data track number.2. The cartridge memory according to claim 1 , whereinthe capacity setting unit is configured to be capable of expanding the data storage area limited to the first capacity to a second capacity capable of storing management information relating to the second information recording medium.3. The cartridge memory according to claim 1 , whereinthe memory unit has a memory capacity of not less than 32 kilobytes, andthe capacity setting unit sets a data storage area having the first capacity of not more than 16 kilobytes to the memory unit.4. The cartridge memory according to claim 1 , further comprisinga voltage generation unit that ...

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Номер записи: 77

14-01-2021 дата публикации

MAGNETIC RECORDING MEDIUM AND CARTRIDGE

Номер: US20210012805A1

Автор: IWAMA Takanobu, Takahashi Jun, TERAKAWA Masaru, YAMAGA Minoru

Принадлежит:

[Object] Provided is a technology that is capable of further improving a recording density of data. 1. A magnetic recording medium in a shape of a tape that is long in a longitudinal direction and is short in a width direction , the medium comprising:a base material;a magnetic layer; anda non-magnetic layer that is provided between the base material and the magnetic layer, and contains one or more types of non-magnetic inorganic particles, whereinthe magnetic layer includes a data band long in the longitudinal direction in which a data signal is to be written, and a servo band long in the longitudinal direction in which a servo signal is written, and in the magnetic layer, a degree of vertical orientation is greater than or equal to 65%, a half width of a solitary waveform in a reproduction waveform of the servo signal is less than or equal to 195 nm, and a thickness of the magnetic layer is less than or equal to 90 nm, and{'sup': −5', '3, 'the non-magnetic layer contains at least Fe-based non-magnetic particles as the non-magnetic inorganic particles, and in the non-magnetic layer, an average particle volume of the Fe-based non-magnetic particles is less than or equal to 2.0×10μm, and a thickness of the non-magnetic layer is less than or equal to 1.1 μm.'}2. The magnetic recording medium according to claim 1 , wherein{'sup': −5', '3, 'the average particle volume of the Fe-based non-magnetic particles is less than or equal to 1.0×10μm.'}3. The magnetic recording medium according to claim 1 , whereinthe half width of the solitary waveform is less than or equal to 180 nm.4. The magnetic recording medium according to claim 3 , whereinthe half width of the solitary waveform is less than or equal to 160 nm.5. The magnetic recording medium according to claim 4 , whereinthe half width of the solitary waveform is less than or equal to 140 nm.6. The magnetic recording medium according to claim 5 , whereinthe half width of the solitary waveform is less than or equal to 120 nm ...

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Номер записи: 78

15-01-2015 дата публикации

Optimum tape layout selection for improved error correction capability

Номер: US20150015982A1

Автор: Robert A. Hutchins, Roy D. Cideciyan, Thomas Mittelholzer

Принадлежит: International Business Machines Corp

According to one embodiment, a system for selecting an optimum tape layout to store data on a tape medium may include a processor and logic integrated with and/or executable by the processor, the logic being configured to: select a family of data set layouts based on parameters associated with at least a tape drive and the tape medium, compute a set of all minimum distances for the selected family of data set layouts, calculate a first performance metric associated with each possible set of parameters, select a best first performance metric from all calculated first performance metrics and store a set of parameters associated with the best first performance metric, and select a data set layout algorithm which utilizes the set of parameters associated with the best first performance metric, wherein the data set layout algorithm and a rewrite layout algorithm combine to form an optimum tape layout.

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Номер записи: 79

21-01-2016 дата публикации

Detecting a servo pattern using a data channel in a magnetic tape drive

Номер: US20160019920A1

Автор: Giovanni Cherubini, Jens Jelitto, Katherine T. Blinick, Robert A. Hutchins

Принадлежит: International Business Machines Corp

In one embodiment, a system for processing data includes an equalizer having a finite impulse response (FIR) filter configured to process data read with a channel using servo coefficients to generate equalized data, and one or more low-pass filters configured to filter the equalized data to output filtered data. The one or more low-pass filters is configured to remove high frequency noise from the equalized data. A method for processing data in a read channel, in one embodiment, includes receiving data read from a magnetic tape using the read channel of a magnetic tape drive. A finite impulse response (FIR) filter is applied to the data by an equalizer using servo coefficients to output equalized data. One or more low-pass filters is applied to the equalized data to obtain filtered data, the one or more low-pass filters being configured to remove high frequency noise from the equalized data.

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Номер записи: 80

17-04-2014 дата публикации

AUTOMATED CLUSTER SIZE MEASUREMENT

Номер: US20140104718A1

Автор: Asselin Pierre, Jury Jason Charles, Wu Xiaowei

Принадлежит: SEAGATE TECHNOLOGY LLC

A cluster size measurement method includes writing a first pattern of a first size of a first number of magnetic clusters. A second pattern of a second size of a second number of magnetic clusters is written, wherein the second plurality of clusters includes clusters of the first number of clusters and a switched cluster. A cluster size of the switched cluster is automatically determined by contrasting the first size and the second size. 1. A method comprising:forming a first plurality of magnetic clusters;forming a second plurality of magnetic clusters; andcalculating a cluster size by contrasting the first plurality of magnetic clusters and the second plurality of magnetic clusters.2. The method of wherein the calculating comprises:determining a difference between the first plurality of magnetic clusters and the second plurality of magnetic clusters;integrating an area under the difference; andnormalizing the area to a peak amplitude to determine a normalized area, wherein the normalized area is determined to be the cluster size.4. The method of wherein the first plurality of magnetic clusters and the second plurality of magnetic clusters are oriented in magnetically different orientations.5. The method of claim 1 , whereinthe second plurality of magnetic clusters includes clusters of the first plurality of magnetic clusters and a switched cluster; andcalculating comprises calculating the cluster size of the switched cluster.6. The method of wherein the cluster size is a minimum size to which a bit of recorded information can be stored.7. The method of further comprising:forming a third plurality of magnetic clusters;calculating a second cluster size by contrasting the second plurality of magnetic clusters and the third plurality of magnetic clusters; andrecording a distribution of a plurality of cluster sizes, wherein the distribution includes the cluster size and the second cluster size.8. A non-transitory computer readable medium having stored thereon claim 1 , ...

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Номер записи: 81

16-01-2020 дата публикации

DATA-CENTER DRIVE WITH SPLIT-ACTUATOR THAT INCREASES READ/WRITE PERFORMANCE VIA DATA STRIPING

Номер: US20200020357A1

Автор: DUNN Eric R., Schmidt Thorsten

Принадлежит:

A method for writing data in a disk drive having actuators each controlling arms extending over disk surfaces, including: receiving a write command from a host; receiving from the host data; dividing the data into data blocks; determining: a first surface from the disk surfaces where data is written by a first head of an arm controlled by a first actuator of the actuators; and a second surface from the disk surfaces where data is written by a second head of an arm controlled by a second actuator of the actuators; determining storage blocks of each of the first and the second surface; and writing first data blocks of the divided data blocks to the determined storage blocks of the first surface using the first head while writing second data blocks of the divided data blocks to the determined storage blocks of the second surface using the second head. 1. A method for writing data in a disk drive having a plurality of actuators that each controls a plurality of arms extending over a plurality of disk surfaces , the method comprising:receiving a write command from a host device;receiving from the host device data to be written by the write command;dividing the received data into data blocks; a first surface from the plurality of disk surfaces where data is written by a first head of an arm controlled by a first actuator of the plurality of actuators; and', 'a second surface from the plurality of disk surfaces where data is written by a second head of an arm controlled by a second actuator of the plurality of actuators;, 'determiningdetermining one or more storage blocks of each of the first and the second surface where the divided data blocks are written; andwriting one or more first data blocks of the divided data blocks to the determined storage blocks of the first surface using the first head while writing one or more second data blocks of the divided data blocks to the determined storage blocks of the second surface using the second head.2. The method according to ...

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Номер записи: 82

21-01-2021 дата публикации

Magnetic recording medium

Номер: US20210020197A1

Автор: Katsunori Maeshima, Masaru Terakawa, Minoru Yamaga

Принадлежит: Sony Corp

A tape-shaped magnetic recording medium includes a base, a nonmagnetic layer that is provided on the base and contains a nonmagnetic powder, and a magnetic layer that is provided on the nonmagnetic layer and contains a magnetic powder. In the magnetic recording medium, the magnetic layer has an average thickness of not more than 90 nm, the magnetic powder has an average aspect ratio of from 1.0 to 3.0, a coercive force Hc1 in a perpendicular direction is not more than 3,000 Oe, the coercive force Hc1 in the perpendicular direction and a coercive force Hc2 in a longitudinal direction satisfy the relation of Hc2/Hc1≤0.8, the nonmagnetic layer has an average thickness of not more than 1.1 μm, and the nonmagnetic powder has an average particle volume of not more than 2.0×10 −5 μm 3 .

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Номер записи: 83

26-01-2017 дата публикации

INFORMATION RECORDING MEDIUM AND METHOD FOR REPRODUCING THE SAME

Номер: US20170025142A1

Автор: ADACHI Yoshihisa

Принадлежит:

An information recording medium () including a first region () in which medium identification information has been recorded, a data region (), and a second region () which is positioned between the first region () and the data region () and in which control information has been recorded, in which an area of the first region () is greater than an area of the second region () in size. 1. An information recording medium comprising:a first region that includes medium identification information indicating a structure of the information recording medium;a data region in which user data can be recorded or has been recorded; anda second region which is positioned between the first region and the data region, and includes control information indicating whether or not an apparatus can access a region on the information recording medium,wherein the number of tracks of the first region is greater than the number of tracks of the second region.2. The information recording medium according to claim 1 , wherein the medium identification information at least includes either or both a first address and a last address of the data region as reference address information for the data region.3. A method for reproducing the information recording medium according to claim 2 , the method comprising:an address recognition step of recognizing reference address information for the data region from medium identification information recorded in the first region;an address moving step of, on a basis of the reference address information, moving to an address in which information of the data region is recorded; anda reproduction step of reproducing information recorded in the data region. The present invention relates to an information recording medium capable of recording any data and a method for reproducing the same.An information recording medium such as an optical disc has a first region (PIC (=permanent information & control data) region) in which medium identification information indicating ...

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Номер записи: 84

28-01-2016 дата публикации

CHANNEL BITWORD PROSESSOR, PRML DECODER, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE

Номер: US20160027468A1

Автор: KIKUGAWA Atsushi

Принадлежит:

It is an objective of the present invention to provide a technique to balance DSV in channel bit word when using fixed-length run length limited code based on enumeration. A channel bit word processor according to the present invention: evaluates DSV of a channel bit word in NRZI format which is generated on the basis of enumeration; and selects a connection word which causes a minimum absolute value of DSV after connecting a plurality of channel bit words (refer to FIG. ). 1. A channel bit word processor that processes a channel bit word using a run length limited code of fixed length based on enumeration , comprising:a channel bit word generator that generates the channel bit word of NRZI format using a user bit word;a DSV evaluator that calculates a DSV of a plurality of consecutive ones of the channel bit words; anda connection word selector that selects one of a plurality of connection word candidates that are candidates of connection word connecting the plurality of consecutive ones of the channel bit words,{'b': 1', '1, 'wherein the plurality of connection word candidates includes one of the connection word candidate that includes an odd number of bit “” in NRZ format and one of the connection word candidate that includes an even number of bit “” in NRZ format,'}and wherein the connection word selector selects one of the connection word candidates as the connection word, so that an absolute value of DSV of a code stream in which the plurality of consecutive ones of the channel bit words and the connection word are combined is minimized.2. A PRML decoder that decodes , using PRML method , a bit frame configured by a channel bit word of NRZI format using a run length limited code of fixed length based on enumeration and a connection word between the channel bit words , comprising:an ACS unit that calculates a path metric in PRML decode process; anda connection word determinator that determines which one of a plurality of connection word candidates is selected ...

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Номер записи: 85

28-01-2016 дата публикации

Systems and Methods for Rank Independent Cyclic Data Encoding

Номер: US20160028419A1

Автор: Li Shu, Yang Shaohua

Принадлежит: LSI Corporation

The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for data encoding. 1. A data processing system , the data processing system comprising: receive a user data input; and', 'apply a rank independent encoding algorithm to the user data input to yield an encoded output, wherein the rank independent encoding algorithm includes multiplying an interim data set by a quasi-pseudo inverse matrix., 'a rank independent data encoding circuit operable to2. The data processing system of claim 1 , wherein the quasi-pseudo inverse matrix is part of an encoding matrix claim 1 , and wherein the encoding matrix further includes a first user matrix claim 1 , a second user matrix claim 1 , a first interim matrix claim 1 , a second interim matrix.3. The data processing system of claim 2 , wherein the interim data set is a first interim data set claim 2 , and wherein the rank independent data encoding circuit comprises:a first vector multiplier circuit operable to multiply the user data input by an inverse of the first user matrix to yield a second interim data set;a second vector multiplier circuit operable to multiply the second interim data set by the first interim matrix to yield a third interim data set;a third vector multiplier circuit operable to multiply the third interim data set by the second interim matrix to yield a fourth interim data set;a fourth vector multiplier circuit operable to multiply the user data input by the second user matrix to yield a fifth interim data set; anda fifth vector multiplier circuit operable to multiply a combination of the fourth interim data set and the fifth interim data set by the quasi-pseudo inverse matrix to yield the first interim data set.4. The data processing system of claim 3 , wherein the rank independent data encoding circuit further comprises:an adder array circuit operable to add the fourth interim data set to the fifth interim data set to yield the combination ...

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Номер записи: 86

24-04-2014 дата публикации

I/O BALANCE PROCESSING METHOD AND DEVICE

Номер: US20140111881A1

Автор: Zhao Chunyang

Принадлежит: Huawei Technologies Co., Ltd.

The present disclosure provides a method and device for processing I/O balance. The method includes: receiving a storage request message carrying a data table, an estimated capacity of the data table, a size of a data block corresponding to the data table, and a disk identifier indicating storage of the data table, where the data table includes at least one data file; and acquiring database information according to the estimated capacity of the data table, the size of the data block corresponding to the data table and the total number of disks corresponding to the disk identifier, generating a first shell script according to the storage request message and the database information, and creating a database according to the first shell script. 1. A method for processing I/O balance , comprising:receiving a storage request message, wherein the storage request message comprises: a data table, an estimated capacity of the data table, a size of a data block corresponding to the data table, and a disk identifier indicating storage of the data table, the data table comprising at least one data file;acquiring database information according to the estimated capacity of the data table, the size of the data block corresponding to the data table and the total number of disks corresponding to the disk identifier, wherein the database information comprises: an estimated capacity of the data table in each disk corresponding to the disk identifier, the number of data files in each disk corresponding to the disk identifier, and a size of the data file; andgenerating a first shell script according to the storage request message and the database information, and creating a database according to the first shell script.2. The method according to claim 1 , wherein acquiring the database information according to the estimated capacity of the data table claim 1 , the size of the data block corresponding to the data table and the total number of the disks corresponding to the disk identifier ...

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Номер записи: 87

24-01-2019 дата публикации

SYSTEM AND METHOD FOR TAPE LAYOUT OPTIMIZATION

Номер: US20190027186A1

Автор: Arslan Suayb S., Goker Turguy, Le Hoa, Lee Jaewook

Принадлежит:

A tape layout module for determining a tape layout allocation strategy for laying out data on tape, the data being organized into a plurality of fixed-size subdata sets with each of the plurality of subdata sets including a plurality of codeword interleaves, the tape including a plurality of media defect characteristics, includes a tape layout optimization system including a processor that receives information on the plurality of media defect characteristics. The tape layout optimization system determines the tape layout allocation strategy based at least in part on at least one of the plurality of media defect characteristics. Additionally, the tape layout optimization system can determine the tape layout allocation strategy further based on distance spectra between pairs of the plurality of codeword interleaves. Further, the tape layout optimization system can determine the tape layout allocation strategy by selectively utilizing at least one tape layout parameter. 119-. (canceled)20. A magnetic tape for use in a tape drive , the magnetic tape comprising:a plurality of tracks that are laid out along a length of the magnetic tape, each of the plurality of tracks being configured to receive data, the data being organized into a plurality of fixed-size subdata sets with each of the plurality of subdata sets including a plurality of codeword interleaves; anda plurality of media defect characteristics;wherein the data is laid out on the plurality of tracks in accordance with a tape layout allocation strategy as determined by a tape layout module, the tape layout module including:a tape layout optimization system including a processor that receives information on the plurality of media defect characteristics, the tape layout optimization system determining the tape layout allocation strategy based at least in part on at least one of the plurality of media defect characteristics, and the tape layout optimization system determining the tape layout allocation strategy ...

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Номер записи: 88

24-01-2019 дата публикации

SHINGLED MAGNETIC RECORDING STORAGE SYSTEM

Номер: US20190027187A1

Автор: Liu Xiong, Qiang Jian, XIE WENXIANG

Принадлежит:

The disclosed technology provides a method that improves CCT in SMR device systems. In one implementation, the method comprises writing data to a shingled magnetic recording (SMR) band in a storage device, determining whether an off-track write has occurred, identifying unsafe written data in response to determining that an off-track write has occurred, determining whether caching space is available upon identifying unsafe written data, continue writing data to the SMR band without a write retry upon determining that caching space is available, and writing unsafe written data to the available caching space. In another implementation, the method comprises receiving a request to repair an encroached track in an SMR band, recovering encroached data to a dynamic random-access memory, determining whether caching space is available, writing the recovered data to the available caching space upon determining that caching space is available, and merging other cached data in the SMR band. 1. A method comprising:determining whether an off-track write has occurred during writing data to a shingled magnetic recording (SMR) band in a storage device;identifying unsafe written data in response to determining that an off-track write has occurred;determining whether caching space is available upon identifying unsafe written data;continue writing data to the SMR band without a write retry upon determining that caching space is available; andcaching unsafe written data to the available caching space.2. The method of claim 1 , further comprising:transferring cached unsafe written data to the SMR band when the storage device is in an idle state.3. The method of claim 1 , further comprising:performing a normal disc write operation upon determining that an off-track write has not occurred.4. The method of claim 1 , further comprising:packing the unsafe written data as one packet; andwriting the one packet of packed unsafe written data to the available caching space.5. The method of claim 1 ...

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Номер записи: 89

23-01-2020 дата публикации

METHODS AND SYSTEMS FOR STORING DATA SEQUENTIALLY ON A MEDIA

Номер: US20200026868A1

Автор: Flowers Jeff, Rees Mark

Принадлежит: Wasabi Technologies, Inc.

Systems and methods for storing data are provided herein using a data archive architecture controlled by a head server. The head server can write data in a contiguous manner across multiple storage devices by partitioning objects into multiple portions and spreading the portions across the multiple storage devices. Portions of a first object can be transmitted to a first subset of storage devices and portions of a second object can be transmitted to a second subset of storage devices. The first subset of storage devices can write the portions of the first object to a first write location indicated by a write pointer. The head server can increment the write pointer based on a length of the portions of the first object to a second write location. The second subset of storage devices can write the portions of the second object to the second write location. 1. A method to store data sequentially on a media comprising:receiving, by a head server in communication with a plurality of storage devices, a first object;dividing, by the head server, the first object into a first portion having a first length and a second portion having a second length, the first length different from the second length;transmitting, by the head server, the first portion to a first storage device of the plurality of storage devices;writing, by the first storage device, the first portion to a first write location of the first storage device indicated by a write pointer;incrementing, by the head server, the write pointer to a second write location based on the first length, the second write location of the first storage device;transmitting, by the head server, a first subset of the second portion to the first storage device and a second subset of the second portion to a second storage device of the plurality of storage devices;writing, by the first storage device, the first subset of the second portion to the second write location of the first storage device, the second write location in a ...

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Номер записи: 90

01-02-2018 дата публикации

MAXIMIZE SMR DRIVE CAPACITY

Номер: US20180032263A1

Автор: Liu Xiong, Shen Feng, TAN SZE CHEK, XIE WENXIANG

Принадлежит: SEAGATE TECHNOLOGY LLC

Systems and methods for maximizing shingled magnetic recording (SMR) drive capacity are described. In one embodiment, the SMR drive may include a main store to store user-accessible data, a media cache and media scratchpad to store internal data temporarily for internal operations, and a storage controller to process read and write requests. In some cases, the main store comprises a shingled media partition and an unshingled media partition. The storage controller may designate one or more data tracks from the shingled media partition as temporary data track guard bands. In some embodiments, a track range is selected based at least in part on at least one of an amount of data in the media cache, a size of the new data in the media cache, and an association between the new data in the media cache and data currently stored within the selected track range. 1. A storage device , the storage device comprising:a main store to store user-accessible data, wherein the main store comprises a shingled media partition;a media cache to store internal data temporarily for internal operations;a storage controller to identify new data on the media cache to transfer to the main store, identify one or more aspects of the new data, and upon identifying the one or more aspects of the new data select a track range from tracks n to n+m among z total tracks in the shingled media partition based on at least one of the one or more aspects of the new data.2. The storage device of claim 1 , comprising:the storage controller to copy the identified new data in the media cache to a data buffer of the storage device.3. The storage device of claim 2 , comprising:the storage controller to determine whether the media cache includes a copy of data written to at least one track from tracks n to n+m−1.4. The storage device of claim 3 , comprising:upon determining the media cache includes a copy of data written to at least one track from tracks n to n+m−1, the storage controller to copy from the media ...

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Номер записи: 91

01-02-2018 дата публикации

ENCODING DATA

Номер: US20180033460A1

Автор: HARRINGTON MICHAEL HUGH

Принадлежит:

Data can be encoded in physical medium and represented by shapes having many various physical attributes. In various examples, data points are encoded and represented by the physical shape, color, size, and/or structure of objects. In one embodiment, holes in memory surface substrates represent data. Various attributes of such holes, including depth, profile size, profile shape, and/or angle can represent data. 1. A method for encoding data , comprising: one or more physical attributes of the feature represent data; and', 'the one or more physical attributes comprise at least one of a feature elevation and a feature height., 'creating a feature on a memory substrate, wherein2. The method of claim 1 , wherein the feature comprises a subsurface feature.3. The method claim 1 , wherein a quantity of possible outcomes of the physical attributes represent data.4. The method of claim 1 , wherein the feature has a location that represents data.5. The method claim 1 , further comprising encrypting the data.6. The method claim 1 , wherein creating the feature on the memory substrate comprises creating the feature of a selected material claim 1 , the selected material representing data.7. The method claim 1 , wherein the one or more physical attributes of the feature comprise a feature opacity level or a feature reflectiveness.8. The method of claim 1 , wherein the one or more physical attributes comprise a feature length.9. A data storage medium claim 1 , comprising a feature on a memory substrate claim 1 , wherein:one or more physical attributes of the feature represent data andthe one or more physical attributes of the feature comprises a feature shape.10. The data storage medium of claim 9 , wherein the feature comprises a subsurface feature.11. The data storage medium of claim 9 , wherein the memory substrate comprises two data layers.12. The data storage medium of claim 9 , wherein a quantity of possible outcomes of the physical attributes represent data.13. The data ...

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Номер записи: 92

02-02-2017 дата публикации

RECORDING MEDIUM, PLAYBACK DEVICE, AND PLAYBACK METHOD

Номер: US20170034497A1

Автор: Toma Tadamasa, Yahata Hiroshi

Принадлежит:

A recording medium according an aspect of the present disclosure has recorded therein a main video stream where a main video has been encoded, and a sub-video stream where a sub-video, that is to be superimposed on the main video and displayed, has been encoded. The sub-video stream includes bitmap data indicating a design of the sub-video and palette data specifying the display color of the design. The palette data includes first palette data for a first luminance dynamic range (SDR), and second palette data for a second luminance dynamic range (HDR) that is broader than the first dynamic range. 1. A recording medium , in which is recorded a main video stream where a main video has been encoded , and a sub-video stream where a sub-video , that is to be superimposed on the main video and displayed , has been encoded ,wherein the sub-video stream includes bitmap data indicating a design of the sub-video and palette data specifying the display color of the design,and wherein the palette data includes first palette data for a first luminance dynamic range, and second palette data for a second luminance dynamic range that is broader than the first dynamic range.2. The recording medium according to claim 1 ,wherein the bitmap data includes first bitmap data for the first dynamic range, and second bitmap data for the second dynamic range, is obtained by a plurality of types of the sub-video displayed superimposed on the main video being encoded, and', 'includes a plurality of sets, each of which corresponds to one of the plurality of types of sub-video, each including a first sub-video stream including the first palette data and the first bitmap data of the corresponding sub-video image, and a second sub-video stream including the second palette data and the second bitmap data of the corresponding sub-video image., 'and wherein the sub-video stream'}3. The recording medium according to claim 2 ,wherein a difference value between a value of a first identifier given to a ...

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Номер записи: 93

01-05-2014 дата публикации

Method of reproducing a still picture from a recording medium, method of decoding the still picture and the recording medium

Номер: US20140119714A1

Автор: Byung Jin Kim, Jea Yong Yoo, Kang Soo Seo

Принадлежит: LG ELECTRONICS INC

In the method, video data is reproduced from the recording medium, and an I-picture and a number of P-pictures are output as a still picture based on the reproduced video data. The output data may then be received and decoded for display.

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Номер записи: 94

30-01-2020 дата публикации

SEQUENTIAL WRITE MANAGEMENT IN A DATA STORAGE SYSTEM

Номер: US20200034039A1

Автор: Chen Tao T., Hart Brian W., Jiang Liang J., Kalavakolanu Anil, Ramagiri Vani D.

Принадлежит:

Sequential write management in accordance with the present description permits impermissible write retries to be processed by a hard drive such as a Shingled Magnetic Recording (SMR) hard dive. In one embodiment, logic returns a successful write indication in response to a received retry write request operation without writing data to the SMR hard drive if the data of the received retry write operation has already been successfully written to the same location requested by the received retry write request operation. Conversely, a failure notice is returned if the data of the received retry write request operation has not been previously successfully written to the same location requested by the received retry write request operation. Other features and aspects may be realized, depending upon the particular application. 1. A system , comprising:a data storage system having a storage controller and at least one storage unit controlled by the storage controller and configured to store data in the primary volume, wherein the storage unit has a processor; and receiving a write request operation to write data to a location in the storage unit;', 'determining whether the received write request operation is a retry write request operation of a previous write request operation to write to the same location of the previous write request operation;', 'in response to a determination that the received write request operation is a retry write request operation of a previous write request operation, determining if the data of the previous write request operation has previously been successfully written to the same location of the received write request operation; and', 'in response to a determination that the data of the previous write request operation has been successfully written to the same location of the received write request operation, bypassing execution of the received write request operation and returning a successful write indication in response to the received write ...

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Номер записи: 95

08-02-2018 дата публикации

MAGNETIC DISK DEVICE, MAGNETIC DISK CONTROL DEVICE, MAGNETIC DISK CONTROL METHOD AND RECORDING MEDIUM

Номер: US20180039450A1

Автор: ISHII Suguru, Ito Tsukasa, Tanaka Tsubasa

Принадлежит: BUFFALO INC

There is provided a magnetic disk device including a magnetic disk, and circuitry configured to receive a control command for instructing to write data in the magnetic disk or to rear the data from the magnetic disk, perform a data access process of writing the data in the magnetic disk or reading the data from the magnetic disk according to the received control command, specify a data amount of object data of the data access process, calculate a cumulative value of the data amount of the object data from a start of an operation, and perform notification when the cumulative value is equal to or larger than a predetermined threshold. 1. A magnetic disk device comprising:a magnetic disk; and receive a control command for instructing to write data in the magnetic disk or to read the data from the magnetic disk;', 'perform a data access process of writing the data in the magnetic disk or reading the data from the magnetic disk according to the received control command;', 'specify a data amount of object data of the data access process;', 'calculate a cumulative value of the data amount of the object data from a start of an operation; and', 'perform notification when the cumulative value is equal to or larger than a predetermined threshold., 'circuitry configured to2. The magnetic disk device according to claim 1 ,wherein the circuitry specifies the data amount of the object data using information representing a data length of the object data included in the received control command.3. The magnetic disk device according to claim 1 ,wherein the circuitry specifies the data amount of the object data based on an amount of data processed by the circuitry.4. The magnetic disk device according to claim 1 ,wherein the circuitry calculates a remaining period to be required until the cumulative value will reach the predetermined threshold, using the cumulative value and a period required to reach the cumulative value, and the circuitry notifies the calculated remaining period.5. ...

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Номер записи: 96

12-02-2015 дата публикации

METHOD FOR GENERATING ADDRESS DATA AND DISK STORAGE APPARATUS

Номер: US20150043099A1

Автор: HARA Takeyori, KAWABE Takayuki

Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, there is provided a method for generating address data. The method generates a first code corresponding to a cylinder number. The cylinder number is divided and recorded on servo sectors in association with an identification of a cylinder on a disk. The first code is formed of some codes obtained by dividing the cylinder number based on a number of each of the servo sectors. The method generates a second code corresponding to address data for each of the servo sectors, by encoding the first code based on the servo sector number and a servo format number. The servo format number is used to identify a format of each of the servo sectors. 1. A method for generating address data in a disk drive , the method comprising:generating a first code corresponding to a cylinder number, the cylinder number being divided and recorded on a plurality of servo sectors in association with an identification of a cylinder on a disk, the first code being formed of some codes obtained by dividing the cylinder number based on a respective servo sector number of each of the servo sectors, the servo sectors being respectively assigned servo sector format numbers used to identify formats of the servo sectors; andgenerating a second code corresponding to address data for each of the servo sectors, by encoding the first code based on the respective servo sector number and a respective servo format number corresponding to each of the servo sectors.2. The method of claim 1 , wherein:the first code is formed of a high-order code having a number of bits obtained by the division based on the respective servo sector number, and a low-order code having a number of bits common to the respective servo sector number; andgenerating the second code comprises generating the second code by executing an exclusive OR operation between a third code corresponding to the respective servo format number and the first code.3. The method of claim 2 , wherein:the first code comprises a ...

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Номер записи: 97

12-02-2015 дата публикации

STORING RANDOM AND SEQUENTIAL DATA ON DIFFERENT TRACK WIDTHS OF A RECORDING MEDIUM

Номер: US20150043100A1

Автор: Benakli Mourad, ERDEN Mehmet Fatih

Принадлежит:

Host data to be written to a recording medium is categorized as one of sequential data or random data. The sequential data is written to a first track width on the recording medium. The random data is written to a second track width on the recording medium, the second track width being larger than the first track width. 120-. (canceled)21. An apparatus comprising: obtain, via the reader, a first signal comprising a first component generated from a full width of a first track and second component generated from a partial width of a second track, the first track comprising first subtracks that are read together by the reader and resolved into more than two signal values;', 'obtain, via the reader, a second signal comprising a third component generated from a full width of the second track and fourth component generated from a partial width of the first track; and', 'extract information from at least the first track based on joint processing of the first and second signals, the information comprising a combination of binary bit values of the first subtracks., 'a processor capable of being coupled to at least one reader that generates signals while in proximity to a recording medium, the processor configured to22. The apparatus of claim 21 , wherein the first subtracks comprise three subtracks and are resolved into four signal values claim 21 , and wherein the information comprises two bits corresponding to each of the four signal values.23. The apparatus of claim 21 , wherein the recording medium comprises a shingled track pattern with a relatively wider track width and a relatively narrower width.24. The apparatus of claim 23 , wherein the at least one reader has an effective read width corresponding to the relatively wider track width.25. The apparatus of claim 23 , wherein the first subtracks correspond to the relatively narrower width and the second track corresponds to the relatively wider width claim 23 , and wherein the second track comprises binary signal data. ...

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Номер записи: 98

11-02-2016 дата публикации

Digital optical tape storage system

Номер: US20160042755A1

Автор: Daniel Scott Rosen

Принадлежит: GROUP 47 Inc

Digital optical tape archival storage systems and methods are disclosed. A digital optical tape recorder may simultaneously write data and two or more guide tracks onto a digital optical tape recording medium. A digital optical taper reader may include a camera comprising an array of detectors to capture a two-dimensional image of the digital optical tape recording medium, and an image processor to extract the data from the two-dimensional image. The camera may capture the two-dimensional image of the digital optical tape recording medium without aligning individual data bits recorded on the digital optical tape recording medium to individual detectors within the camera.

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Номер записи: 99

12-02-2015 дата публикации

CHANNEL BITWORD PROCESSOR, PRML DECODER, AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE

Номер: US20150043321A1

Автор: KIKUGAWA Atsushi

Принадлежит:

It is an objective of the present invention to provide a technique, when using fixed-length run-length limit codes based on enumeration, that generates fixed-length channel bit words satisfying maximum run-length limitation using a simple configuration. A channel bit word processor according to the present invention includes an avoidance list that describes a difference between a user bit word satisfying a maximum run-length limitation of run-length limit code and a user bit word not satisfying the maximum run-length limitation. The channel bit word processor, if a user bit word does not satisfy the maximum run-length limitation, generates a channel bit word using a user bit word after the difference is added.

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Номер записи: 100