Patents by Inventor Atsushi Kawamura
Atsushi Kawamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160011938Abstract: In a storage apparatus including a storage medium including a plurality of pages as a unit of reading and writing data, a first data block including a data block received from a higher-level device is generated, a second data block of a predetermined size including one or more undivided first data blocks is generated, a third data block in which a correction code is added to the second data block is generated, the third data block is stored in a page buffer, and one or more of the third data blocks stored in the page buffer is written in a page, which is a write destination, out of the pages of the storage medium.Type: ApplicationFiled: August 30, 2013Publication date: January 14, 2016Applicant: Hitachi, Ltd.Inventors: Hideyuki KOSEKI, Takashi TSUNEHIRO, Junji OGAWA, Nagamasa MIZUSHIMA, Atsushi KAWAMURA
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Publication number: 20160002828Abstract: To perform a flame-resistant treatment on a precursor fiber strand by sending hot air to a heat treatment chamber (2) through a hot air blowing nozzle (4) in a direction parallel to a running direction of a precursor fiber strand (10). The hot air blowing from the hot air blowing nozzle (4) passes through a porous plate and a rectifying member that satisfy the following conditions (1) to (4), wherein the conditions are set as follows: (1) A/B?4.0; (2) 0.15???0.35; (3) 0?B?d?20; and (4) 80% or more of an area of one opening of the porous plate when causing facing surfaces of the porous plate and the rectifying member to overlap each other is included in one opening of the rectifying member, A indicating a hot air passage distance (mm) of the rectifying member, B indicating a horizontal maximum distance (mm) of one opening of the rectifying member, ? indicating a rate of hole area of the porous plate, and d indicating an equivalent diameter (mm) of the porous plate.Type: ApplicationFiled: September 14, 2015Publication date: January 7, 2016Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Satoshi KAJI, Nobuyuki YAMAMOTO, Atsushi KAWAMURA, Hitoshi TOMOBE
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Publication number: 20150378816Abstract: A control device stores information associating each of a plurality of physical areas with a plurality of logical areas. The control device respectively stores a plurality of first user data included in a first stripe and a first parity data created on the basis thereof in each of the plurality of physical areas, and, in accordance with receiving a write request for updated user data that updates the user data, which is stored in a first physical area, for a first logical area associated with the first physical area, creates a second parity data on the basis of a data group formed using the updated user data and a plurality of second user data that differs from the plurality of first user data.Type: ApplicationFiled: October 11, 2013Publication date: December 31, 2015Applicant: HITACHI, LTD.Inventors: Atsushi KAWAMURA, Akira YAMAMOTO
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Publication number: 20150378800Abstract: The degree of deterioration of each physical storage area in a non-volatile memory is evaluated without interrupted operation of a storage device. The storage device includes a non-volatile memory configured to include a plurality of physical storage areas and a controller. The controller calculates the degree of deterioration of each of a plurality of specific physical storage areas by performing an evaluation process of evaluating the plurality of specific physical storage areas part by part over all of the plurality of specific physical storage areas and determines whether to use the corresponding physical storage areas based on the calculated degree of deterioration. In the evaluation process, the controller selects a part of the plurality of specific physical storage areas writes predetermined evaluation data on the physical storage area group, reads the evaluation data and calculates the degree of deterioration based on the read evaluation data.Type: ApplicationFiled: March 19, 2013Publication date: December 31, 2015Inventors: Akifumi SUZUKI, Atsushi KAWAMURA
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Publication number: 20150372304Abstract: A nonaqueous electrolyte secondary battery that has high capacity and good load properties. A nonaqueous electrolyte secondary battery includes a positive electrode for a nonaqueous electrolyte secondary battery, a negative electrode, a separator interposed between the positive electrode for a nonaqueous electrolyte secondary battery and the negative electrode, and an electrolyte. The positive electrode for a nonaqueous electrolyte secondary battery includes a positive electrode current collector and a positive electrode active material layer disposed on the positive electrode current collector, the positive electrode active material layer containing a positive electrode active material and a positive electrode additive. The positive electrode additive contains a Li-containing compound that generates gas at 4.2 V (vs. Li/Li+) or less during first charging of the nonaqueous electrolyte secondary battery.Type: ApplicationFiled: October 4, 2013Publication date: December 24, 2015Applicant: SANYO ELECTRIC CO., LTD.Inventors: Kazuhiro Hasegawa, Atsushi Kawamura, Sho Tsuruta, Atsushi Fukui
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Patent number: 9183136Abstract: A storage control apparatus comprises a storage unit, an association unit, and an execution unit. The storage unit stores association information showing multiple physical chunks which are configured in a physical address space of a nonvolatile semiconductor memory, multiple logical storage areas which are configured in a logical address space of the nonvolatile semiconductor memory, multiple logical chunks which are respectively associated with the multiple physical chunks, and an association between a logical storage area and a logical chunk. The association unit changes the association by changing the association information in accordance with a state of the nonvolatile semiconductor memory, and identifies based on the association information a physical storage area corresponding to a logical storage area specified in an input/output request from a computer. The execution unit executes the input/output request with respect to the identified physical storage area.Type: GrantFiled: May 16, 2012Date of Patent: November 10, 2015Assignee: Hitachi, Ltd.Inventors: Atsushi Kawamura, Junji Ogawa
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Publication number: 20150317097Abstract: Data capacity efficiency is improved by de-duplicating data assigned with a code that is different for each data. A storage apparatus comprising a flash memory control device equipped with one or more flash memory modules, wherein the flash memory module comprises at least one flash memory chip for providing a storage area, and a controller for controlling writing/reading of data including user data and a guarantee code accompanying the user data to and from the storage area provided by the flash memory chip, wherein the controller respectively divides a plurality of the data having the common user data into the user data and the guarantee code, stores one of the user data in an area of a predetermined unit of the storage area, and links and stores each of the guarantee codes accompanying the plurality of user data in an area of a predetermined unit of the storage area.Type: ApplicationFiled: July 14, 2015Publication date: November 5, 2015Applicant: HITACHI, LTD.Inventors: Atsushi KAWAMURA, Junji OGAWA
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Patent number: 9175429Abstract: Provided is a pressure steam treatment apparatus of a fiber bundle and a producing method of a carbon fiber precursor fiber bundle for producing a carbonated precursor fiber bundle to suppress an influence of a leakage of a pressure steam to the outside of the apparatus so as to hold down a pressure steam supply amount to the minimum, simultaneously reduce a broken yarn, improve a yield ratio and have a high productivity. A pressure steam treatment apparatus is provided with labyrinth sealing chambers in back and forth of a pressure steam treatment chamber, and treats a plurality of fiber bundles traveling in parallel like a sheet along a fiber bundle travel path in a lump under a pressure steam atmosphere. The fiber bundle travel path of the labyrinth sealing chamber is divided in parallel to the fiber bundle.Type: GrantFiled: February 9, 2012Date of Patent: November 3, 2015Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Yukihiro Mizutori, Atsushi Kawamura, Hiromasa Inada
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Publication number: 20150299909Abstract: A horizontal heat treatment device continuously subjects an untreated continuous flat object to heat treatment while horizontally transferring the untreated object within a heat treatment chamber. Seal chambers are interconnected to the untreated-object loading opening and treated-object unloading opening of the heat treatment chamber. A passage is connected to an opening of each of the seal chambers, the opening located on the side opposite the heat treatment chamber. The untreated-object passage loading opening interconnected to the untreated-object seal chamber loading opening and the treated-object passage unloading opening interconnected to the treated-object seal chamber unloading opening are the untreated-object loading opening and treated-object unloading opening of the heat treatment device. A pair of gas ejection nozzles are provided at upper and lower positions of the passages. The nozzles eject gas in specific directions, and the nozzle openings have a specific shape, a direction, and a length.Type: ApplicationFiled: February 7, 2013Publication date: October 22, 2015Applicant: MITSUBISHI RAYON CO., LTD.Inventors: Keishi Mizuno, Tetsu Yasunami, Atsushi Kawamura, Youji Hatanaka, Nobuyuki Yamamoto, Hiromasa Inada
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Patent number: 9157679Abstract: A furnace to flame-resistantly treat a precursor fiber strand by sending hot air to a heat treatment chamber through a hot air blowing nozzle in a direction parallel to a running direction of the strand is provided. The hot air passes through a porous plate and a rectifying member satisfying the following conditions: (1) A/B?4.0; (2) 0.15???0.35; (3) 0?B?d?20; and (4) 80% or more of the area of one opening of the porous plate when facing surfaces of the porous plate and the rectifying member overlap is included in one opening of the rectifying member, where A is the rectifying member hot air passage distance (mm), B is a horizontal maximum distance (mm) of one opening of the rectifying member, ? is a rate of hole area of the porous plate, and d is the porous plate equivalent diameter (mm).Type: GrantFiled: July 26, 2012Date of Patent: October 13, 2015Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Satoshi Kaji, Nobuyuki Yamamoto, Atsushi Kawamura, Hitoshi Tomobe
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Publication number: 20150245212Abstract: A device management apparatus that mediates between an owner of a device and a user who is not the owner of the device in order to permit the user to use the device, includes a device information storage section in which information on each of a plurality of devices is registered, an acquisition section which acquires a desired condition from a user, and a matching process section which performs matching between the desired condition acquired from the user and the information on each device registered in the device information storage section thereby selecting a device satisfying the desired condition as a target device, generating contract information related to the use of the target device between an owner of the target device and the user, and granting a control right of the target device to the user.Type: ApplicationFiled: July 31, 2013Publication date: August 27, 2015Applicant: OMRON CorporationInventor: Atsushi Kawamura
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Patent number: 9111618Abstract: Data capacity efficiency is improved by de-duplicating data assigned with a code that is different for each data. A flash memory module includes a plurality of flash memory chips and a memory controller. Each flash memory chip includes a plurality of blocks, each block including a plurality of physical pages, each physical page being a unit for writing/reading data. The memory controller is configured to manage a first set and a second set of user data and a guarantee code associated with the user data. If the first set and the second set of user data are the same, then the same data sets are stored in a first physical page and the first and second guarantee codes are stored in a second physical page.Type: GrantFiled: July 11, 2014Date of Patent: August 18, 2015Assignee: HITACHI, LTD.Inventors: Atsushi Kawamura, Junji Ogawa
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METHOD FOR PRODUCING CARBON FIBER BUNDLE AND HEATING FURNACE FOR CARBON FIBER PRECURSOR FIBER BUNDLE
Publication number: 20150184941Abstract: The present invention relates to a heating furnace suitable for a step in which a precursor fiber bundle is flameproofed. The heating furnace is provided with a hot air introduction duct disposed in a horizontal space and a heat treating chamber, and in the hot air introduction duct outside the heat treatment chamber, a heating device and a circulation fan for the hot air. The interior of the heat treatment chamber comprises a fiber travel path in which the fiber bundles each having a sheet shape horizontally travels the hot air flowing in a low-temperature region is directed to the high-temperature region side by an air direction change plate to be narrowed and flow in the width direction of the hot air introduction duct As a result, the temperature distribution in the width direction in the treatment chamber can be improved.Type: ApplicationFiled: June 28, 2013Publication date: July 2, 2015Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Risa Arai, Satoshi Kaji, Atsushi Kawamura, Hiroyuki Nishi, Takafumi Tanaka, Masashi Shimahara -
Patent number: 9063663Abstract: The flash memory controller compresses data in response to a write request. On condition that there is a compression effect with respect to the compressed data, the flash memory controller writes the compressed data to the base area of a physical block of a flash memory. As physical pages assigned to the physical block, the flash memory controller reduces the physical pages assigned to the base area from 102 down to 59, and increases the physical pages assigned to the update area from 26 up to 69. Therefore, it is possible to suppress exhaustion of physical pages which are assigned to the update area, to reduce the number of erases of the physical block, and to consequently prolong device operating life.Type: GrantFiled: September 21, 2010Date of Patent: June 23, 2015Assignee: Hitachi, Ltd.Inventors: Akifumi Suzuki, Atsushi Kawamura, Junji Ogawa
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Publication number: 20150142848Abstract: In a technology for allowing accurate and easy search of a device which satisfies a request of a user from among a large number of devices present at various places, an area ID capable of uniquely identifying a target area of the device is registered in a storage section as information on the device. A device search request from the user includes an area condition for identifying an area in which exertion of an operation by the device is desired by the user as a search condition. A matching process section determines the device to be extracted by comparing the target area identified by the area ID of each device with the area condition included in the device search request.Type: ApplicationFiled: March 8, 2013Publication date: May 21, 2015Applicant: OMRON CORPORATIONInventors: Atsushi Kawamura, Atsushi Hisano
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Publication number: 20150127896Abstract: A storage system comprises a storage comprising a nonvolatile storage medium, and a storage control apparatus for inputting/outputting data to/from the storage. The storage control apparatus comprises a memory for storing management information, which is information used in inputting/outputting data to/from the storage, and a control part for controlling access to the storage. The control part stores the management information, which is stored in the memory, in the storage as a base image, and when the management information is updated subsequent to the base image being stored in the storage, creates a journal comprising information related to this update, and stores the journal in the storage as a journal group which is configured from multiple journals.Type: ApplicationFiled: January 15, 2015Publication date: May 7, 2015Applicant: HITACHI, LTD.Inventors: Atsushi KAWAMURA, Junji OGAWA
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Patent number: 8972651Abstract: A storage system comprises a storage comprising a nonvolatile storage medium, and a storage control apparatus for inputting/outputting data to/from the storage. The storage control apparatus comprises a memory for storing management information, which is information used in inputting/outputting data to/from the storage, and a control part for controlling access to the storage. The control part stores the management information, which is stored in the memory, in the storage as a base image, and when the management information is updated subsequent to the base image being stored in the storage, creates a journal comprising information related to this update, and stores the journal in the storage as a journal group which is configured from multiple journals.Type: GrantFiled: October 5, 2011Date of Patent: March 3, 2015Assignee: Hitachi, Ltd.Inventors: Atsushi Kawamura, Junji Ogawa
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Publication number: 20140344454Abstract: When receiving a use request of information from an information use device (3), an information selection unit (31) selects information to be transmitted to the information use device (3). The information selection unit (31) selects information based on provision side information stored in a provider contract DB (13) and use side information stored in a user contract DB (14). A communication unit (12) transmits the information selected by the information selection unit (31) to the information use device (3). Further, an evaluation value calculation unit (33), for each piece of the information provided from the information provision device (2), calculates an evaluation value based on transmission performance that the communication unit (12) has transmitted the information to the information use device (3).Type: ApplicationFiled: August 29, 2012Publication date: November 20, 2014Applicant: OMRON CORPORATIONInventors: Atsushi Kawamura, Atsushi Hisano, Kazuki Kasai
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Publication number: 20140321208Abstract: Data capacity efficiency is improved by de-duplicating data assigned with a code that is different for each data. A storage apparatus comprising a flash memory control device equipped with one or more flash memory modules, wherein the flash memory module comprises at least one flash memory chip for providing a storage area, and a controller for controlling writing/reading of data including user data and a guarantee code accompanying the user data to and from the storage area provided by the flash memory chip, wherein the controller respectively divides a plurality of the data having the common user data into the user data and the guarantee code, stores one of the user data in an area of a predetermined unit of the storage area, and links and stores each of the guarantee codes accompanying the plurality of user data in an area of a predetermined unit of the storage area.Type: ApplicationFiled: July 11, 2014Publication date: October 30, 2014Applicant: HITACHI, LTD.Inventors: Atsushi KAWAMURA, Junji OGAWA
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Patent number: 8839492Abstract: A pressure steam treatment apparatus according to the invention includes a pressure steam treatment chamber and labyrinth sealing chambers. The labyrinth sealing chambers are respectively arranged on a fiber bundle inlet and on a fiber bundle outlet of the steam treatment apparatus, having a running path of the fiber bundle in a horizontal direction and having plural labyrinth nozzles on top and bottom of the running path. The difference between a maximum value and a minimum value of the distance in the perpendicular direction of the top and bottom side labyrinth nozzles, of a pair of opposing labyrinth nozzles is 0.5 mm or smaller when the ambient temperature of the labyrinth sealing chamber is 140° C. This structure ensures that the energy cost can be reduced, the deformation of the apparatus and also, the raise of fuzz on the fiber bundle and fiber bundle breakage can be prevented at the same time.Type: GrantFiled: January 17, 2012Date of Patent: September 23, 2014Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Yukihiro Mizutori, Atsushi Kawamura, Hiromasa Inada