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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Patent number: 8352676Abstract: 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: GrantFiled: October 26, 2010Date of Patent: January 8, 2013Assignee: Hitachi, Ltd.Inventors: Atsushi Kawamura, Junji Ogawa
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Patent number: 8328373Abstract: A vehicle side mirror includes a mirror body, a mirror base fastened to a body panel, and a mirror housing, which houses the mirror body and is supported by the mirror base, and the mirror housing has a housing body, which houses the mirror body on a back side of a vehicle and is attached to the mirror base, a cover member, which is mounted on the housing body so as to cover a front face of the housing body, and a reinforcement plate, which is mounted on the front face between the cover member and the front face of the housing body along the front face.Type: GrantFiled: September 30, 2008Date of Patent: December 11, 2012Assignee: Ichikoh Industries, Ltd.Inventor: Atsushi Kawamura
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Patent number: 8296516Abstract: A first controller has a first CM area having a plurality of first sub-areas, and a second controller has a second CM area having a plurality of second sub-areas. The first controller stores first data in any of the first sub-areas, and in addition, stores a mirror of the first data (first mirror data) in any of the second sub-areas. The first controller manages a pair (an association relationship) of the storage-destination first sub-area of the first data and the storage-destination second sub-area of the first mirror data. Similarly, the second controller stores second data in any of the second sub-areas, and in addition, stores a mirror of the second data (second mirror data) in any of the first sub-areas. The second controller manages a pair (an association relationship) of the storage-destination second sub-area of the second data and the storage-destination first sub-area of the second mirror data.Type: GrantFiled: October 20, 2009Date of Patent: October 23, 2012Assignee: Hitachi, Ltd.Inventors: Atsushi Kawamura, Yusuke Nonaka, Hideyuki Koseki
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Publication number: 20120137638Abstract: The invention provides a packaged tow being characterized in that a carbon fiber precursor tow (1) having a flattened shape in cross section and having a first surface and a second surface opposite to the first surface is layered and packaged in a packaging container in untwisted state. A front end and a back end of the carbon fiber precursor tow (1) thus packaged are placed on a top of the fully-packaged carbon fiber precursor tow. There is no twist in a part of the tow from a bottom parted of the packaged tow to a front end (1a) placed on the top of the carbon fiber precursor tow (1). When the front end (1a) and a back end (1b) of the tow are respectively applied with top/bottom surface identification means to identify top and bottom surfaces thereof, top and bottom surfaces on front ends (1a) and back ends (1b) of tows packaged in a plurality of packaging containers (4) can be correctly identified and joined.Type: ApplicationFiled: August 6, 2010Publication date: June 7, 2012Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Katsuhiko Ikeda, Atsushi Kawamura, Hiromasa Inada
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Publication number: 20120102260Abstract: 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: October 26, 2010Publication date: April 26, 2012Applicant: HITACHI, LTD.Inventors: Atsushi Kawamura, Junji Ogawa
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Publication number: 20120073396Abstract: Provided are a motion guide device and a screw device each having a cover for protecting the device against moisture, such as coolant, and powder dust. The motion guide device has a raceway member 11, a moving member main body 21 mounted on the raceway member 11 through a plurality of rolling elements and cap members 22 attached to respective end surfaces of the moving member main body 21 in a relative moving direction. A seal cover 50 is provided having a cover main body 51 that covers each of the cap members 22 and a seal section 55 that is provided between the cover main body 51 and a cap member-side end surface of the moving member main body 21 to stop a gap between the cap member-side end surface of the moving member main body 21 and the cover main body 51. This structure makes it possible to reliably prevent any foreign material, such as powder dust or swarf, and moisture, such as coolant, from getting into the inside of the moving member 20.Type: ApplicationFiled: May 21, 2011Publication date: March 29, 2012Applicant: THK CO., LTD.Inventors: Takahiro Kawaguchi, Ryuji Furusawa, Yuki Nakamura, Yosuke Irie, Satoshi Kashiwagura, Masanori Yoshino, Masaaki Hihara, Shinya Mori, Katsuya Iida, Atsushi Kawamura
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Patent number: 8142082Abstract: An optical receptacle which couples a connector ferrule in which an optical fiber is inserted and an optical semiconductor package. The optical receptacle comprises: a precise sleeve which holds the connector ferrule; a receptacle body including a connection portion connected to the optical semiconductor package, a cylindrical portion in which the precise sleeve is inserted; a partition portion located between the connection portion and the cylindrical portion; and a transparent member confined in a region between an inner end portion of the precise sleeve and the partition portion, without being fixed.Type: GrantFiled: April 9, 2009Date of Patent: March 27, 2012Assignee: Mitsubishi Electric CorporationInventors: Isao Oshima, Atsushi Kawamura, Toshitsugu Uesugi, Tadayoshi Hata
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Publication number: 20120072641Abstract: 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: ApplicationFiled: September 21, 2010Publication date: March 22, 2012Inventors: Akifumi Suzuki, Atsushi Kawamura, Junji Ogawa
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Publication number: 20120066866Abstract: A production method for a carbon fiber precursor fiber bundle and a production apparatus of the carbon fiber precursor fiber bundle. A carbon fiber precursor fiber bundle that has a degree of intermingle of 1 m-1 or less between small tows, consists of substantially straight fibers without imparted crimp, a tow of which straight fibers has a moisture content of less than 10% by mass when housed in a container, and has a widthwise dividing capability to maintain a form of a single aggregate of tows when housed in a container, taken out from the container and guided into a firing step, and to divide into a plurality of small tows in the firing step by the tension generated in the firing step.Type: ApplicationFiled: April 7, 2011Publication date: March 22, 2012Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Katsuhiko IKEDA, Atsushi KAWAMURA
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Publication number: 20110243831Abstract: A production method of a carbon fiber precursor fiber and/or a fiber bundle which permits easy bundling of a plurality of small tows into one bundle, with a dividing capability to divide into the original small tows spontaneously at the time of firing, and is suitable for obtaining a carbon fiber that is excellent in productivity and quality. A production method of carbon fiber precursor fiber and/or a fiber bundle that has a degree of intermingle of 1 m?1 or less between small tows, consists of substantially straight fibers without imparted crimp, a tow of which straight fibers has a moisture content of less than 10% by mass when housed in a container, and has a widthwise dividing capability to maintain a form of a single aggregate of tows when housed in a container, taken out from the container and guided into a firing step, and to divide into a plurality of small tows in the firing step by the tension generated in the firing step.Type: ApplicationFiled: April 7, 2011Publication date: October 6, 2011Applicant: Mitsubishi Rayon Co., Ltd.Inventors: Katsuhiko Ikeda, Takahiko Kunisawa, Atsushi Kawamura
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Publication number: 20110231369Abstract: A first controller has a first CM area having a plurality of first sub-areas, and a second controller has a second CM area having a plurality of second sub-areas. The first controller stores first data in any of the first sub-areas, and in addition, stores a mirror of the first data (first mirror data) in any of the second sub-areas. The first controller manages a pair (an association relationship) of the storage-destination first sub-area of the first data and the storage-destination second sub-area of the first mirror data. Similarly, the second controller stores second data in any of the second sub-areas, and in addition, stores a mirror of the second data (second mirror data) in any of the first sub-areas. The second controller manages a pair (an association relationship) of the storage-destination second sub-area of the second data and the storage-destination first sub-area of the second mirror data.Type: ApplicationFiled: October 20, 2009Publication date: September 22, 2011Applicant: HITACHI, LTD.Inventors: Atsushi Kawamura, Yusuke Nonaka, Hideyuki Koseki
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Patent number: 7941903Abstract: There are provided a carbon fiber precursor fiber bundle which permits easy bundling of a plurality of small tows into one bundle, is provided with a dividing capability to divide into the original small tows spontaneously at the time of firing, and is suitable for obtaining a carbon fiber that is excellent in productivity and quality, and a production method and a production apparatus of the carbon fiber precursor fiber bundle, and an excellent carbon fiber and a production method thereof. A production apparatus of a carbon fiber precursor fiber bundle, comprising an intermingling device that comprises a yarn channel having a flat rectangular section through which a plurality of small tows can pass in a manner adjacent to each other and a plurality of air jet holes disposed with predetermined intervals along the long side direction of the flat rectangle and having the openings thereof in the yarn channel.Type: GrantFiled: February 10, 2005Date of Patent: May 17, 2011Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Katsuhiko Ikeda, Nobuyuki Shimozawa, Takahiko Kunisawa, Atsushi Kawamura
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Patent number: 7852206Abstract: Plural communication areas are provided, and plural electronic control units for mutually making communication in each of the communication areas are provided. A vehicular power line communication system includes a power line coupling the respective communication areas to one another, branch power lines coupling the respective electronic control units in each of the communication areas to one another, and a battery for supplying electric power to the electronic control units through the power line and the branch power lines. The power line is formed of a +B line turning to a positive polarity and a ground line turning to a negative polarity, which are cabled to be spaced from each other in a part of the power line. The branch power lines superpose communication data thereon, thereby making data communication.Type: GrantFiled: June 10, 2008Date of Patent: December 14, 2010Assignee: Yazaki CorporationInventors: Yo Yanagida, Naoyuki Shiraishi, Atsushi Kawamura, Terumitsu Sugimoto
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Patent number: 7810931Abstract: A light source apparatus, including: an array light source in which a plurality of emission light sources is arranged; a divergence characteristic controller disposed corresponding to the array light source and configured to control a divergence characteristic of each of the emission light sources of the array light source; and a focusing optical element configured to control a directivity of light emitted from each of the emission light sources of the array light source, and the array light source, the divergence characteristic controller, and the focusing optical element are arranged in this order in a direction of emission from the array light source, and a following formula is satisfied: 0.067?L/f<1.1 where an effective diagonal length of the array light source is L and a focal distance of the focusing optical element is f.Type: GrantFiled: July 20, 2006Date of Patent: October 12, 2010Assignee: Ricoh Company, Ltd.Inventors: Atsushi Kawamura, Hibiki Tatsuno
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Publication number: 20100025697Abstract: An optical module of the present invention includes a semiconductor device, a grounded metal member for mounting the semiconductor device thereon, a substrate for mounting the grounded metal member thereon, and a lead pin fixed to and insulated from the grounded metal member and soldered to the substrate. The lead pin is used to supply power to the semiconductor device. The grounded metal member has a protrusion on a surface thereof facing the substrate and wherein the protrusion of the grounded metal member is in contact with the substrate.Type: ApplicationFiled: October 8, 2009Publication date: February 4, 2010Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Atsushi KAWAMURA
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Publication number: 20090263087Abstract: An optical receptacle which couples a connector ferrule in which an optical fiber is inserted and an optical semiconductor package. The optical receptacle comprises: a precise sleeve which holds the connector ferrule; a receptacle body including a connection portion connected to the optical semiconductor package, a cylindrical portion in which the precise sleeve is inserted; a partition portion located between the connection portion and the cylindrical portion; and a transparent member confined in a region between an inner end portion of the precise sleeve and the partition portion, without being fixed.Type: ApplicationFiled: April 9, 2009Publication date: October 22, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Isao Oshima, Atsushi Kawamura, Toshitsugu Uesugi, Tadayoshi Hata
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Publication number: 20090086347Abstract: A vehicle side mirror includes a mirror body, a mirror base fastened to a body panel, and a mirror housing, which houses the mirror body and is supported by the mirror base, and the mirror housing has a housing body, which houses the mirror body on a back side of a vehicle and is attached to the mirror base, a cover member, which is mounted on the housing body so as to cover a front face of the housing body, and a reinforcement plate, which is mounted on the front face between the cover member and the front face of the housing body along the front face.Type: ApplicationFiled: September 30, 2008Publication date: April 2, 2009Inventor: Atsushi KAWAMURA
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Publication number: 20090016678Abstract: An optical module includes an optical waveguide member for passing light therethrough and an optical path changing member for receiving and reflecting light. The optical path changing member is optically coupled to the optical waveguide member. The optical module further includes a lens optically coupled to the optical path changing member. The optical module further includes a first optical device and a second optical device. The first optical device and the second optical device are disposed to face the optical path changing member through the lens and optically coupled to the lens. The optical path changing member has a first face and a second face at different locations. The first face reflects a first wavelength of light transmitted between the optical waveguide member and the first optical device. The second face reflects a second wavelength of light transmitted between the optical waveguide member and the second optical device.Type: ApplicationFiled: July 2, 2008Publication date: January 15, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Atsushi KAWAMURA, Tatsuo HATTA
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Patent number: 7423519Abstract: Plural communication areas are provided, and plural electronic control units for mutually making communication in each of the communication areas are provided. A vehicular power line communication system includes a power line coupling the respective communication areas to one another, branch power lines coupling the respective electronic control units in each of the communication areas to one another, and a battery for supplying electric power to the electronic control units through the power line and the branch power lines. The power line is formed of a +B line turning to a positive polarity and a ground line turning to a negative polarity, which are cabled to be spaced from each other in a part of the power line. The branch power lines superpose communication data thereon, thereby making data communication.Type: GrantFiled: July 28, 2005Date of Patent: September 9, 2008Assignee: Yazaki CorporationInventors: Yo Yanagida, Naoyuki Shiraishi, Atsushi Kawamura, Terumitsu Sugimoto
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Publication number: 20080203510Abstract: An optical module of the present invention includes: a semiconductor device 14; a grounded metal member 10 for mounting the semiconductor device 14 thereon; a substrate 16 for mounting the grounded metal member 10 thereon; and a lead pin 18 fixed to and insulated from the grounded metal member 10 and soldered to the substrate 16, the lead pin 18 being used to supply power to the semiconductor device 14; wherein the grounded metal member 10 has a protrusion on a surface thereof facing the substrate 16; and wherein the protrusion of the grounded metal member 10 is in contact with the substrate 16.Type: ApplicationFiled: November 1, 2007Publication date: August 28, 2008Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Atsushi KAWAMURA