Of Record Carrier Patents (Class 369/53.2)
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Patent number: 11886123Abstract: A super-resolution system for nano-patterning is disclosed, comprising an exposure head that enables a super-resolution patterning exposures. The super-resolution exposures are carried out using electromagnetic radiation and plasmonic structure, and in some embodiments, plasmonic structures having specially designed super-resolution apertures, of which the “bow-tie” and “C-aperture” are examples. These apertures create small but bright images in the near-field transmission pattern. A writing head comprising one or more of these apertures is held in close proximity to a medium for patterning. In some embodiments, a data processing system is provided to re-interpret the data to be patterned into a set of modulation signals used to drive the multiple individual channels and multiple exposures, and a detection means is provided to verify the data as written.Type: GrantFiled: March 7, 2022Date of Patent: January 30, 2024Inventors: Franklin Mark Schellenberg, Keith Edward Bennett
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Patent number: 11869589Abstract: An apparatus (e.g., a content addressable memory system) can have a controller; a first content addressable memory coupled to the controller and a second content addressable memory coupled to the controller. The controller can be configured to cause the first content addressable memory to compare input data to first data stored in the first content addressable memory and cause the second content addressable memory to compare the input data to second data stored in the second content addressable memory such the input data is compared to the first and second data concurrently and replace a result of the comparison of the input data to the first data with a result of the comparison of the input data to the second data in response to determining that the first data is invalid and that the second data corresponds to the first data.Type: GrantFiled: March 1, 2021Date of Patent: January 9, 2024Assignee: Micron Technology, Inc.Inventors: Ameen D. Akel, Sean S. Eilert
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Patent number: 11537117Abstract: A method for setting alarm levels for a machine provides defining at least one condition indicator reflecting the condition of the machine with respect to a defect to be monitored of the machine, the at least one condition indicator defined from machine kinematic data, recording measurements of process related parameters during a predetermined period during which the machine is operating normally, calculating at least one condition indicator value for the at least one condition indicator) using machine condition data, determining a graph of the at least one condition indicator value as a function of a first process related parameter chosen from the measured process related parameters, dividing the graph into operating classes, each operating class being representative of different operating conditions of the machine, calculating an alarm level value for each operating class, setting the determined alarm level value at the midpoint of each operating class.Type: GrantFiled: July 26, 2021Date of Patent: December 27, 2022Assignee: Aktiebolaget SKFInventors: Joakim Bergstrom, Per-Erik Larsson
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Patent number: 11488295Abstract: An evaluation device evaluates an image clarity of a print image. The evaluation device includes: an object that is projected onto a measurement surface of a recording medium; an illuminator that makes the object projected onto the measurement surface; an imager that images the measurement surface on which the object has been projected to obtain image data; and a hardware processor that, based on a distribution of parameters related to a brightness of the image data, quantifies a degree of the image clarity into a numerical value and defines the numerical value as an evaluation value of the image clarity.Type: GrantFiled: June 11, 2020Date of Patent: November 1, 2022Assignee: Konica Minolta, Inc.Inventors: Natsuko Minegishi, Yoshiki Nakane, Takenobu Kimura, Hiroshi Morimoto, Kei Okamura, Takashi Akazawa
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Patent number: 11345281Abstract: A mirror assembly includes a mirror housing and a mirror. The mirror is supported by the mirror housing. The mirror has an outer reflective surface. The mirror is bendable between a flat shape and a fisheye shape. The mirror assembly further includes an actuator assembly coupled to the mirror. Upon actuation, the actuator assembly is configured to bend the mirror between the flat shape and the fisheye shape to adjust a field of view of the mirror.Type: GrantFiled: February 17, 2020Date of Patent: May 31, 2022Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Erik B. Golm, Meng Jiang, Shengbing Jiang, Prakash Mohan Peranadam
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Patent number: 10606912Abstract: An information processing system that easily grasps the relationship between contents shared by communication includes a database that saves, in association with each other, a content identifier that identifies content data and a communication identifier that identifies communication performed in relation to the content data, and an associator that associates the first content identifier that identifies the first content data and the second content identifier that identifies the second content data by using a communication identifier that identifies communication performed between the first user and the second user when the first content data and the second content data are shared in relation to the communication.Type: GrantFiled: March 10, 2016Date of Patent: March 31, 2020Assignee: NEC CorporationInventor: Mitsunori Morisaki
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Patent number: 10558561Abstract: A storage layer may be configured to over-provision logical storage resources to objects. The storage layer may provision the resources in response to, inter alia, a request to open and/or create a zero-length file. The storage layer may be further configured to store data of the objects in a contextual format configured to associate the data with respective logical identifiers. The storage layer may determine an actual, storage size of the object based on the associations stored on the stored associations. Storage clients may rely on the storage layer to determine the size of the object and, as such, may defer and/or eliminate updates to persistent metadata.Type: GrantFiled: April 15, 2014Date of Patent: February 11, 2020Assignee: SANDISK TECHNOLOGIES LLCInventors: Nick Piggin, Santhosh Koundinya, Nisha Talagala
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Patent number: 10389600Abstract: A system and method of managing a network with assets are described. The method includes generating a directed graph with each of the assets represented as a node, determining individual failure probability of each node, computing downstream failure probability of each node according to an arrangement of the nodes in the directed graph, computing upstream failure probability of each node according to the arrangement of the nodes in directed graph, and computing network failure probability for each node based on the corresponding individual failure probability, the downstream failure probability, and the upstream failure probability. Managing the network is based on the network failure probability of the assets.Type: GrantFiled: March 23, 2015Date of Patent: August 20, 2019Assignee: Utopus Insights, Inc.Inventors: Aanchal Aggarwal, Younghun Kim, Tarun Kumar, Mark A. Lavin, Giuliano Andrea Pagani, Abhishek Raman
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Patent number: 9818444Abstract: When displaying a plurality of reduced content items corresponding to original content items in a list, reduced content corresponding to original content being reproduced on an external video reproduction device is displayed in a second display mode different from a first display mode for other reduced content items. An instruction to perform a predetermined process on original content related to the reduced content displayed in the second display mode is accepted in response to a user operation on the reduced content. An identifier of the reduced content and the instruction to perform the predetermined process on the original content associated with the identifier are transmitted to an external device.Type: GrantFiled: July 22, 2016Date of Patent: November 14, 2017Assignee: Canon Kabushiki KaishaInventor: Keita Inakura
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Patent number: 9501348Abstract: Embodiments of the present invention provide a method for monitoring components in a library by tracking the movement of library components. By tracking the movement of library components, the degradation of library components can be monitored and the reliability of library components determined, allowing unreliable components to be bypassed or replaced, enhancing the reliability of the library and preventing data loss.Type: GrantFiled: January 29, 2016Date of Patent: November 22, 2016Assignee: KIP CR P1 LPInventors: Michael R. Foster, Allen J. Rohner, Patrick S. Tou
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Patent number: 9311950Abstract: Disclosed herein is an optical disc apparatus including: an optical pickup radiating light having a first wavelength provided for an optical disc medium of a first type and light having a second wavelength which is smaller than the first wavelength and provided for another optical disc medium of a second type; a signal outputting section outputting a signal according to light reflected by the optical disc medium to reflect light radiated by the optical pickup; and a type determination section requesting the optical pickup to radiate light having the first wavelength to an object optical disc medium to acquire the signal output by the signal outputting section and determining the type of the object optical disc medium in accordance with the number of peaks appearing in the acquired output signal output by the signal outputting section while moving the optical pickup in a direction to the object optical disc medium.Type: GrantFiled: October 23, 2014Date of Patent: April 12, 2016Assignees: Sony Corporation, Sony Computer Entertainment Inc.Inventor: Satoshi Mimura
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Patent number: 9293168Abstract: When data is recorded on an optical disc, and stored for a long period of time, there is a need to periodically evaluate whether a quality of the recorded data is determined with time, or not. If the signal quality is lower than a given level as an evaluation result, a work for moving the data to a brand-new optical disc is required. However, in periodical inspection, if the number of optical discs is enormous, a large amount of time is required to evaluate all data recorded on the optical disc. In recording user data on the optical disc, a signal of a particular pattern having a lifetime shorter than a reference lifetime of the user data is recorded in a given area of the optical disc in advance, the particular pattern signal is reading at given time intervals, and processing on the user data is determined on the basis of the evaluation result of the signal quality.Type: GrantFiled: January 29, 2014Date of Patent: March 22, 2016Assignees: HITACHI CONSUMER ELECTRONICS CO., LTD., HITACHI—LG DATA STORAGE, INC.Inventors: Yoshitaka Morimoto, Soichiro Eto, Koichi Watanabe
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Patent number: 9177590Abstract: There is provided a recording apparatus including a light radiating unit that radiates light to an optical recording medium, a recording unit that performs light emission control of the light radiating unit, and performs recording on the optical recording medium, and a control unit that performs control in a manner that, in a state in which a logical address space, a virtual address space obtained by adding at least a spare area to the logical address space, and a physical address space obtained by adding a buffer area to the virtual address space are defined, a process for replacing a recording area of the optical recording medium with the spare area is executed using a virtual address.Type: GrantFiled: March 19, 2013Date of Patent: November 3, 2015Assignee: SONY CORPORATIONInventors: Takashi Nagatomo, Hideyuki Nakamuro
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Patent number: 9001633Abstract: Provided is a method and an apparatus for setting a virtual disc status of an optical disc drive. While set to the virtual disc status, the optical disc drive does not detect if an optical disc is present in the optical disc drive in response to the optical disc drive being powered on. Accordingly, power consumption and noise may be reduced.Type: GrantFiled: February 5, 2014Date of Patent: April 7, 2015Assignee: Toshiba Samsung Storage Technology Korea CorporationInventor: Sang Hoon Hyun
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Patent number: 8976639Abstract: When recording layers were provided on both the front and back sides of an optical disk in order to increase the recording capacity, whether the reproducing surface of the optical disk taken out of the cartridge was the front side or the back side could not be determined. This problem can be solved by adding to the BCA, in addition to disk identification information: type information indicating whether a recording surface is provided on one side or both sides; side information indicating whether the surface with which reproduction is being performed is side A or side B; recording layer quantity information indicating whether the disk has a single layer or a double layer; information indicating the areas other than the BCA and the directions in which data on the read-in, data zones, and read-out are recorded/reproduced; and information indicating the presence/absence of a disk cartridge.Type: GrantFiled: June 10, 2011Date of Patent: March 10, 2015Assignee: Hitachi Consumer Electronics Co., Ltd.Inventor: Taku Hoshizawa
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Patent number: 8964516Abstract: An optical pickup of an optical disc device is configured to read a signal recorded in an optical disc. An envelope signal generation unit is configured to generate an envelope signal from the signal read by the optical pickup. An off-track level storage unit stores an off-track level. An off-track signal generation unit is configured to generate an off-track signal by binarizing the envelope signal, which is generated by the envelope signal generation unit, using the off-track level stored by the off-track level storage unit. A determination unit is configured to output a disc determination signal, which indicates whether the optical disc is a standard-density optical disc or a high-density optical disc in which a line density is higher than the standard density, based on the off-track signal generated by the off-track signal generation unit.Type: GrantFiled: March 21, 2014Date of Patent: February 24, 2015Assignee: JVC Kenwood CorporationInventor: Tsutomu Arai
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Patent number: 8958274Abstract: In accordance with an exemplary embodiment of the present invention, a method for measuring a quality parameter of an optical storage system comprising a non-diffraction-limited optical storage medium and a readout device, the method comprising the process of deriving an impulse response of the optical storage system, and the process of analyzing the impulse response to determine at least one of a width of the impulse response and a skewness of the impulse response as the quality parameter.Type: GrantFiled: September 6, 2011Date of Patent: February 17, 2015Assignee: Thomson LicensingInventors: Dietmar Hepper, Oliver Theis, Xiaoming Chen, Herbert Hoelzemann, Gael Pilard
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Patent number: 8953423Abstract: There is provided a cartridge including a plurality of optical information recording media having unique information recorded thereon, an accommodation body configured to accommodate the plurality of optical information recording media, and an identification device configured to store the unique information of the plurality of optical information recording media and supply the unique information to a changer in a non-contact manner, the identification device being provided in the accommodation body.Type: GrantFiled: November 12, 2013Date of Patent: February 10, 2015Assignee: Sony CorporationInventors: Yoshihisa Chiba, Hisao Tanaka, Osami Banjo
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Patent number: 8942074Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: January 27, 2015Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8913475Abstract: A data detecting device includes a multi-input adaptive equalizer, a binarizing unit, and an equalization error calculating unit. The multi-input adaptive equalizer includes a plurality of adaptive equalizers and outputs a reproduction information signal from a target track and a reproduction information signal from a close track close to the target track as equalization signals by calculating outputs of the adaptive equalizers, the reproduction information signals being input to the adaptive equalizers, respectively as reproduction information signals. The binarizing unit obtains binarized data by performing a binarization process on the equalization signals.Type: GrantFiled: September 20, 2011Date of Patent: December 16, 2014Assignee: Sony CorporationInventor: Junya Shiraishi
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Patent number: 8913471Abstract: A recording apparatus includes: a recording unit configured to perform recording of information on a recoding medium having a plurality of layers serving as recording layers where recording of information is performed, and a track serving as a continuous recording area is formed in the plurality of layers and recording of data is performed within a track; and a control unit configured to cause the recording unit to execute recording to the recording medium according to a request from a host apparatus, and also to enable the host apparatus to recognize, in the event of determining that a certain layer of the recording medium is in a recording disabled state, that all of tracks in this layer are in a recording disabled state.Type: GrantFiled: June 19, 2013Date of Patent: December 16, 2014Assignee: Sony CorporationInventor: Tomotaka Kuraoka
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Patent number: 8902722Abstract: A counter is configured to generate counts associated with different locations, within a smallest addressable unit of data, on a storage medium of a disk drive. A detector is configured to detect a change in a property of a signal sensed from the storage medium. A controller is configured to: determine a count of the counter corresponding to a location, within a smallest addressable data unit on the storage medium, at which the change in the property of the signal sensed from the storage medium is detected, and change a response of at least one of the detector, a read channel controller of the disk drive, or a servo controller of the disk drive based on (i) the count and (ii) the counter.Type: GrantFiled: December 2, 2013Date of Patent: December 2, 2014Assignee: Marvell World Trade Ltd.Inventor: Mats Oberg
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Patent number: 8897112Abstract: An information recording and reproduction device comprises an optical pickup that has an objective lens and records information to a tape-form medium or reproduces information from a tape-form medium using laser light; a tape threading component that allows the tape-form medium to be arranged opposite the objective lens; a controller that detects that the tape-form medium is a cleaning tape; a movement mechanism that operates so as to bring the tape-form medium and the objective lens into contact with each other, in response to the detection by the control unit; and a first drive mechanism that plays out the tape-form medium in a state in which the tape-form medium and the objective lens are in contact with each other. The information recording and reproduction device is capable of cleaning the optical pickup even with a tape-form medium.Type: GrantFiled: June 7, 2012Date of Patent: November 25, 2014Assignee: Panasonic CorporationInventor: Akinaga Natsui
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Patent number: 8873359Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: October 28, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8867328Abstract: An optical recording medium includes: a medium information region on which medium identification information is recorded; a content region on which content information is recorded; and a blank region provided between the medium information region and the content region and in which at least two tracks are provided so as to connect a train of prepits in the medium information region and a train of prepits in the content region. No information is recorded on the blank region. Thus, an optical recording medium is provided in which a region on which medium identification information is recorded and a region on which content information is recorded are different in track pitch and in which a reproduction error hardly occurs when reproduction shifts from the region on which the medium identification information is recorded to the region on which the content information is recorded.Type: GrantFiled: February 18, 2014Date of Patent: October 21, 2014Assignee: Sharp Kabushiki KaishaInventors: Toshihiko Sakai, Hirohisa Yamada, Masaki Yamamoto, Yasuhiro Harada, Go Mori, Hideharu Tajima, Nobuyuki Takamori
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Patent number: 8854937Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: October 7, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Publication number: 20140293763Abstract: An optical pickup of an optical disc device is configured to read a signal recorded in an optical disc. An envelope signal generation unit is configured to generate an envelope signal from the signal read by the optical pickup. An off-track level storage unit stores an off-track level. An off-track signal generation unit is configured to generate an off-track signal by binarizing the envelope signal, which is generated by the envelope signal generation unit, using the off-track level stored by the off-track level storage unit. A determination unit is configured to output a disc determination signal, which indicates whether the optical disc is a standard-density optical disc or a high-density optical disc in which a line density is higher than the standard density, based on the off-track signal generated by the off-track signal generation unit.Type: ApplicationFiled: March 21, 2014Publication date: October 2, 2014Applicant: JVC KENWOOD CORPORATIONInventor: Tsutomu ARAI
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Patent number: 8848499Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 30, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8848497Abstract: A recording management apparatus includes: a control unit configured to perform track setting processing arranged to set a fixed management information track where management information to be fixedly disposed with a data structure conforming to the UDF, in a layer on the front-most side as viewed from a laser entry face side, to a recording medium having a plurality of layers serving as recording layers where recording of information is performed by laser irradiation on which a track serving as a continuous recording area is formed in which recording of data is performed, closing track processing arranged to set the fixed management information track to a consecutive recording completed state immediately after setting, and writing request processing arranged to record, by performing management information writing request for the fixed management track which has been closed, management information relating to this writing request in another track by sparing processing.Type: GrantFiled: June 14, 2013Date of Patent: September 30, 2014Assignee: Sony CorporationInventor: Tomotaka Kuraoka
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Publication number: 20140286150Abstract: Disclosed is a data archive system that executes inspection of a recording quality of an optical disc, estimates a recording quality deterioration factor, and informs it to a user, and a method for estimating the recording quality deterioration factor. The data archive system has a server and a data library device. The server has a whole control part, a data library I/F part, and a recording medium. The data library device has multiple recording media, a recording medium storing part, multiple recording/reproducing parts, and a library control part. The recording medium stores attribute information about the recording medium. The whole control part executes first quality inspection on a first recording medium, executes second quality inspection on a second recording medium, refers to attribute information of the recording media recorded on the information recording medium, and controls so that a factor deteriorating the qualities of the recording media may be estimated.Type: ApplicationFiled: February 28, 2014Publication date: September 25, 2014Applicant: HITACHI-LG DATA STORAGE, INC.Inventor: Masayoshi MIURA
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Patent number: 8842509Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 23, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8837265Abstract: An optical information reproduction device includes a light source (14) configured to emit reproduction light, a plasmon resonance element (9) including a resonance section (22) arranged adjacent to a recording region (4) of a recording layer (2), the resonance section (22) causing plasmon resonance between the recording region (4) and the resonance section (22), a photodetector (17a) configured to detect reflected light or transmitted light from the plasmon resonance element (9) on which the reproduction light is irradiated, and a reproduction unit (24) configured to determine, on the basis of a detection signal from the photodetector (17a), whether the recording region (4) is in a recorded state or an unrecorded state, and reproduce information recorded in the recording region (4).Type: GrantFiled: August 18, 2011Date of Patent: September 16, 2014Assignee: Panasonic CorporationInventors: Teruhiro Shiono, Yoshiharu Kobayashi
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Patent number: 8837266Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 16, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8830804Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 9, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8830805Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 9, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8824259Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 2, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8824258Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 2, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8824256Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 2, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8824251Abstract: In a library apparatus, it is not considered that eliminated is an operation for reversing a direction of a double-sided readable/writable recording medium. In the library apparatus having a function of transporting and loading a recording medium from a recording medium storage unit to a recording and reproducing unit through a recording medium transportation unit, a direction in which an unrecorded recording medium is first loaded in the recording and reproducing unit is afterward treated as a front surface, and a direction opposite to the above direction is treated as a rear surface.Type: GrantFiled: February 20, 2013Date of Patent: September 2, 2014Assignees: Hitachi-LG Data Storage, Inc., Hitachi Consumer Electronics Co., Ltd.Inventors: Shimpei Usui, Masayuki Kobayashi, Toshihiro Kato
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Patent number: 8824257Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: September 2, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8811137Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: August 19, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Publication number: 20140226451Abstract: In an optical information storage medium reproduction apparatus reproducing an optical information storage medium including a plurality of information recording layers each including a recording mark having a length shorter than an optical system resolution limit, reproduction laser power reading an information recording layer closest to a reproduction-laser-incident surface of the optical information storage medium is set to be lower than reproduction laser power reading an information recording layer farthest from the reproduction-laser-incident surface but not lower than minimum reproduction laser power that satisfies a reproduction signal characteristic that the optical information storage medium reproduction apparatus requires.Type: ApplicationFiled: April 18, 2014Publication date: August 14, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Masaki Yamamoto, Hirohisa Yamada, Yasuhiro Harada, Go Mori, Hideharu Tajima, Shigemi Maeda, Yoshiteru Murakami
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Patent number: 8804471Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: August 12, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8792314Abstract: 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.Type: GrantFiled: October 25, 2013Date of Patent: July 29, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8755257Abstract: 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.Type: GrantFiled: April 4, 2012Date of Patent: June 17, 2014Assignee: Marvell World Trade Ltd.Inventors: Mats Oberg, Jingfeng Liu
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Patent number: 8755258Abstract: 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.Type: GrantFiled: October 24, 2013Date of Patent: June 17, 2014Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
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Patent number: 8750086Abstract: A test method includes the steps of providing a test optical disc stored data that is reproduced to display a plurality of images having a plurality of single colors, the plurality of single colors comprising a plurality of first single colors; providing a first timer that begins counting for a first predetermined time when the disc player begins to read the test optical disc; displaying test images according to the video signals generated by the disc player that read the test optical disc. The test method further includes the steps of detecting the color of the test images, determining whether the currently detected color is substantially the same as one of the first single colors after the first timer has timed out; determining that the read performance of the disc player is unsatisfactory if the currently detected color is substantially the same as one of first single colors.Type: GrantFiled: June 7, 2013Date of Patent: June 10, 2014Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.Inventors: Xiao-Li Wang, Hai-Feng Zhang, Hung-Lun Chiang, Bing Zhou, Jun Liu, Na Liang
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Patent number: 8705333Abstract: A super-resolution optical recording medium includes: a medium information region on which medium identification information is recorded; a content region on which content information is recorded; and a blank region provided between the medium information region and the content region and in which at least two tracks are provided so as to connect a train of prepits in the medium information region and a train of prepits in the content region. No information is recorded on the blank region. Thus a super-resolution optical recording medium is provided in which a region on which medium identification information is recorded and a region on which content information is recorded are different in track pitch and in which a reproduction error hardly occurs when reproduction shifts from the region on which the medium identification information is recorded to the region on which the content information is recorded.Type: GrantFiled: September 16, 2013Date of Patent: April 22, 2014Assignee: Sharp Kabushiki KaishaInventors: Toshihiko Sakai, Hirohisa Yamada, Masaki Yamamoto, Yasuhiro Harada, Go Mori, Hideharu Tajima, Nobuyuki Takamori
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Patent number: 8693297Abstract: Noise generation in transferring data is suppressed or prevented by transferring data at a data transfer rate according to the amount of data to be transferred to a memory. In a reproducing apparatus, when a read unit or both reads data from a storage medium or both, a determination unit determines the type of the storage medium from which the data is read, then, according to the determined type of the storage medium, a transfer rate change unit orders a data transfer unit to use a preset transfer rate corresponding to the type of the storage medium. The data transfer unit transfers the read data to the temporary storage unit at the ordered transfer rate. This allows data to be transferred without a significant change in the amount of data transfer, which suppresses or prevents noise.Type: GrantFiled: June 27, 2012Date of Patent: April 8, 2014Assignee: Funai Electric Co., Ltd.Inventor: Atsushi Higashide
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Patent number: 8665678Abstract: A reproduction device, contains a rotatable operation disk part for performing an input related to reading of data stored in a memory and a capacitance sensor section for outputting a sensor value expressing a change of a capacitance according to depression of the rotatable operation disk part. The device also contains a storage part for storing a reference value corresponding to the sensor value obtained while the rotatable operation disk part is not depressed, and a control part for judging presence/absence of pressing on the rotatable operation disk part based on a vector quantity being a relative value obtained from a difference between the sensor value output from the capacitance sensor section and the reference value stored in the storage part.Type: GrantFiled: September 29, 2008Date of Patent: March 4, 2014Assignee: D&M Holdings, Inc.Inventor: Kazuhiro Onizuka