Patents by Inventor Yuji Watanabe
Yuji Watanabe 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: 8977841Abstract: A system includes a server connectable to a client, the server configured to allow the client to acquire a message of an index designated by the client among N messages held by the server where N is an integer of two or more. The server includes a classification unit configured to classify the N messages into M classified messages by contents of the messages; a message encryption unit configured to encrypt each of the M classified messages; a message provision unit configured to provide the M encrypted classified messages to the client; and a key sending unit configured to send the client, by oblivious transfer, a message key for decrypting the classified message corresponding to the message of the index designated by the client.Type: GrantFiled: December 6, 2012Date of Patent: March 10, 2015Assignee: International Business Machines CorporationInventors: Takaaki Tateishi, Yuji Watanabe
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Patent number: 8956057Abstract: An optical fiber connector comprises a ferrule having a rear end, a chuck located rearward of the ferrule, a ring having a front end, and a coil spring. The ring is attached to the chuck so as to surround the chuck. The optical fiber connector holds an optical fiber which is inserted from a rear end of the optical fiber connector. In detail, when the optical fiber is inserted into the optical fiber connector, an end of the optical fiber passes through the chuck to be accommodated in the ferrule. The coil spring presses the ring forward (toward the ferrule) so that the chuck is squeezed to hold the inserted optical fiber. When the ring is moved rearward by a stopper inserted between the rear end of the ferrule and the front end of the ring, the chuck is released to release the optical fiber.Type: GrantFiled: November 29, 2012Date of Patent: February 17, 2015Assignees: Japan Aviation Electronics Industry, Limited, Asahi Glass Company, LimitedInventors: Osamu Imaki, Hideto Shimazu, Yuji Watanabe, Minoru Sekine
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Publication number: 20150039882Abstract: Provided is an identifying device for identifying request content from an encrypted request to a server, the identifying device including: a target acquiring unit for acquiring the data size of an encrypted response returned from the server for the encrypted request to the server to be identified; a candidate acquiring unit for acquiring the data size of each of a plurality of encrypted response candidates returned by the server in response to a plurality of encrypted request candidates to be identified sent to the server corresponding to a plurality of known request content candidates; and an identifying unit for identifying the request content to be identified from the plurality of request candidates on the basis of results obtained by comparing the data size of an encrypted response for an encrypted request to be identified to the data sizes of a plurality of encrypted response candidates.Type: ApplicationFiled: July 30, 2014Publication date: February 5, 2015Inventor: Yuji Watanabe
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Publication number: 20150033018Abstract: Provided is a server connectable to a client for input of a string and that has an automaton defining a subsequent state for transition for each state and each character. This server has a key chain generating unit for generating a key chain for each combination of index, character and state expressing the position of each character in a string, the key chain having encrypted keys for the next index corresponding to the subsequent state of transition from the current state in accordance with the character on the basis of the key corresponding to the current state, and a providing unit for communicating with a client and providing to the client a key chain corresponding to each inputted key among a set of key chains for each index in a state concealing the inputted characters from the client.Type: ApplicationFiled: January 10, 2013Publication date: January 29, 2015Inventors: Takaaki Tateishi, Yuji Watanabe
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Patent number: 8941277Abstract: A motor includes a bearing holder and an attachment plate fixed to a radial outer surface of the bearing holder. The attachment plate includes a flat portion including a circular hole and a burring portion axially protruding from the circular hole. The bearing holder includes holder protrusion portions each including a radial outer surface at least partially making contact with the burring portion and holder recess portions and the holder protrusion portions and the holder recess portions are alternately arranged along a circumferential direction. The burring portion includes a plurality of caulking sections extending radially outward to make contact with the circuit board and the plurality of caulking sections are arranged radially outward of the holder recess portions.Type: GrantFiled: January 15, 2013Date of Patent: January 27, 2015Assignee: Nidec CorporationInventors: Yuji Watanabe, Masamichi Nagata
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Publication number: 20150014840Abstract: A semiconductor device includes a substrate, a semiconductor chip mounted on the substrate, an encapsulating body encapsulating the semiconductor chip on the substrate, the encapsulating body including a top surface and a side surface, and a plurality of heat sink plates embedded in the encapsulating body, each of the heat sink plates including an upper portion and a lower portion, the upper portion having an upper surface exposed from the top surface of the encapsulating body, the lowering portion being embedded in the encapsulating body, each of the plurality of heat sink plates being spaced from the semiconductor chip by the encapsulating body. The lower portion of each of the plurality of the heat sink plates includes a protrusion extending horizontally to an outside of an outer edge of the lower portion.Type: ApplicationFiled: September 30, 2014Publication date: January 15, 2015Inventor: Yuji WATANABE
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Patent number: 8935268Abstract: A method and system for controlling disclosure of trace data related to moving object. The method includes the steps of: receiving, for at least one moving object in a first region, a first record aggregate; receiving, for at least one moving object in a second region, a second record aggregate; calculating trace data from at least one attribute value of a first identifier that is in received first and second record aggregates in response to data search request; calculating to satisfy a condition of the moving object passing through at least one region and to satisfy another condition of at least two of the moving objects being present in each of the region; and returning calculated trace data as a search result if the moving object moves in calculated ranges and if the moving object has the first identifier that is in both the received first and second record aggregates.Type: GrantFiled: January 17, 2012Date of Patent: January 13, 2015Assignee: International Business Machines CorporationInventors: Naohiko Uramoto, Yuji Watanabe
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Publication number: 20140342701Abstract: A data server to authenticate a passenger anonymously and allow an outside service to provide a service on the basis of this authentication. A passenger in an automobile uses a portable terminal with an acceleration sensor to send the acceleration sensor log in the portable terminal to a data server. The data server calculates the degree of similarity between the acceleration sensor log and time-series data related to acceleration obtained from probe data acquired from the automobile, and verifies that the portable terminal is indeed inside the automobile by confirming that there is a sufficiently high correlation between the log and the time-series data. The data server provides an access permission code to the portable terminal in response to successful acceleration authentication. The portable terminal provides the access permission code to an outside service, and the outside service accesses probe data in the data server using the access permission code.Type: ApplicationFiled: November 8, 2012Publication date: November 20, 2014Inventors: Takaaki Tateishi, Yuji Watanabe
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Patent number: 8891760Abstract: A server having an automaton whose state transitions in accordance with received characters, determines whether the automaton has transitioned to a final state on the basis of the characters. The server receives a coding sequence from the client in the characters included in the string. The coding sequence elements corresponding to the characters are values encrypting a non-unity using a first encryption scheme having homomorphism, and whose elements not corresponding to the characters are values encrypting a unity using the first encrypting scheme. The server generates, in response to receiving the coding sequence, exchange data encrypting a subsequent state key corresponding to each of a plurality of previous states of the automaton on the basis of the coding sequence using the first encryption scheme; encrypts exchange data with the corresponding previous state key and sends the encrypted exchange data to the client.Type: GrantFiled: December 17, 2012Date of Patent: November 18, 2014Assignee: International Business Machines CorporationInventors: Takaaki Tateishi, Yuji Watanabe
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Patent number: 8872325Abstract: A semiconductor device has a substrate, a semiconductor chip mounted on the substrate, an encapsulating body encapsulating the semiconductor chip on the substrate, and a plurality of heat sink plates embedded in the encapsulating body so as to have a surface that is exposed to an exterior of the encapsulating body and positioned on the same plane. The heat sink plates are spaced from each other.Type: GrantFiled: October 7, 2011Date of Patent: October 28, 2014Assignee: PS4 Luxco S.A.R.L.Inventor: Yuji Watanabe
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Patent number: 8730027Abstract: A vehicle notification sound emitting apparatus is basically provided with a sound emitting device and a notification sound control device. The sound emitting device emits a starting movement notification sound to outside of a vehicle to inform a person in an outside area surrounding the vehicle that the vehicle will transition from a stopped state to a moving state, and emits a moving notification sound to outside of the vehicle to inform a person in the outside area surrounding the vehicle that the vehicle is moving. The notification sound control device operates the sound emitting device to selectively emit the starting movement notification sound. The notification sound control device includes a notification sound emission timing section that sets a start timing of the starting movement notification sound in response to a shift operation having been performed and an additional start movement preparation operation of the vehicle having been performed.Type: GrantFiled: February 7, 2011Date of Patent: May 20, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Hironori Saito, Katsumi Kimura, Tsuyoshi Kanuma, Hideo Yoshino, Yuji Watanabe, Toshiyuki Yamamoto
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Patent number: 8713691Abstract: A system which implements a method for providing attribute data. A request is received from a user device via a network for a virtual ID token relating to attribute information pertaining to a subscriber associated with the user device. A data record including L attributes of the subscriber is read from a database, L being at least 2. The data record is provided to the user device via the network. A selection of M attributes of the L attributes is received from the user device via the network, M being less than L. A virtual record including the M attributes selected from the data record is generated, the virtual record including a virtual ID (VID) for identifying the virtual record. The generated virtual record is stored in the database. The virtual ID token is provided to the user device via the network, wherein the virtual ID token includes the VID.Type: GrantFiled: January 4, 2012Date of Patent: April 29, 2014Assignee: International Business Machines CorporationInventors: Yoshinobu Ishigaki, Masayuki Numao, Madoka Yuriyama, Yuji Watanabe
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Publication number: 20140075205Abstract: A method is provided to process data so that the data can be externally stored with minimized risk of information leakage. A framework (virtual execution framework) based on virtual machines (VMs) is utilized as a substitute for a trusted institution. Encryption of consolidated data can reduce risk of information leakage and enhance security. Since the virtual execution framework can control connection and direction of communication, financial institutions are allowed to apply encryption to data on their own, which makes the data further appropriate for external storage. By allowing financial institutions to apply their own decryption, it is possible to prevent one of two financial institutions from retrieving externally stored data into the external execution framework without intervention of the other. Additionally, associated acting subjects can be provided with freedom depending on the degree of information leakage risk.Type: ApplicationFiled: November 19, 2013Publication date: March 13, 2014Applicant: International Business Machines CorporationInventor: Yuji Watanabe
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Patent number: 8669858Abstract: A vehicle notification sound emitting apparatus is basically provided with a sound emitting device and a notification sound control device. The sound emitting device is configured to emit a movement notification sound to an outside of a vehicle to inform a person in an area surrounding the vehicle that the vehicle will move. The notification sound control device is configured to operate the sound emitting device in response to occurrence of a vehicle condition. The notification sound control device setting the movement notification sound of the sound emitting device to a frequency in a range of 1.5 kHz to 6 kHz.Type: GrantFiled: February 7, 2011Date of Patent: March 11, 2014Assignee: Nissan Motor Co, Ltd.Inventors: Hideo Yoshino, Tsuyoshi Kanuma, Hironori Saito, Katsumi Kimura, Yuji Watanabe, Toshiyuki Yamamoto
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Patent number: 8665081Abstract: A vehicle notification sound emitting apparatus is basically provided with a sound emitting device and a notification sound control device. The sound emitting device emits forward and reverse advancement notification sounds outside of a vehicle to inform a person in an area surrounding the vehicle that the vehicle will move. The notification sound control device operates the sound emitting device to selectively emit the forward and reverse movement notifications. The notification sound control device includes forward and reverse advancement notification sound emission timing sections. A start timing of the forward advancement notification sound is set in response to both a forward movement shift operation having been performed and an additional start movement preparation operation of the vehicle having been performed. A start timing of the reverse movement notification sound is set to be emitted immediately in response to the reverse movement shift operation having been performed.Type: GrantFiled: February 7, 2011Date of Patent: March 4, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Hideo Yoshino, Tsuyoshi Kanuma, Hironori Saito, Katsumi Kimura, Yuji Watanabe, Toshiyuki Yamamoto
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Patent number: 8641438Abstract: In an electronic device, a slider is disposed in an insertion opening of a housing of a card edge connector. The slider is movable with an insertion operation of a circuit board into the insertion opening from an initial position before the circuit board is inserted to an insertion completed position where the insertion operation of the circuit board is completed by being pushed by the circuit board. When the slider is at the initial position, terminal projections are supported on a support surface of the slider in a resiliently deformed condition so that contacts are separated from an electrode-formed surface of the circuit board. When the slider is at the insertion completed position, the terminal projections are completely separated from the slider and in a state of applying a spring back force of resilient deformation to the circuit board through the contacts.Type: GrantFiled: February 23, 2012Date of Patent: February 4, 2014Assignee: Denso CorporationInventors: Takashi Kamiya, Taku Iida, Yuji Watanabe
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Publication number: 20140006445Abstract: A database search system ensures the privacy of a search request and the security of a database with high processing efficiency. The system comprises a database server residing on a network that stores predetermined data, and a client terminal issuing to the database server a search request for inquiring for desired data while keeping the desired data secret. The database server further comprises: a database storing predetermined data; and a search response message generation unit for receiving through a network the data search request in which data to be searched for is kept secret, searching the database by a predetermined computation based on the search request and a list of the data stored in the database while a data item involved with the search request is kept secret, and generating a response to the search request.Type: ApplicationFiled: September 3, 2013Publication date: January 2, 2014Applicant: International Business Machines CorporationInventors: Masayuki NUMAO, Yuji WATANABE
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Patent number: 8618905Abstract: The present invention provides an apparatus for verifying the authority of an owner, in terms of an identifier of a product, the first verification information for verifying the authority held at a terminal for an owner with the authority involving the product, and the second verification information for verifying the authority concerning the identifier of the product stored in a product database. The apparatus comprises means for receiving the identifier and the first verification information, means for acquiring the second verification information from the product DB, and means for determining whether or not there is the authority from the first verification information and the second verification information. A hash value acquired from a one-way hash function is employed as a verification key of the verification information.Type: GrantFiled: July 8, 2008Date of Patent: December 31, 2013Assignee: International Business Machines CorporationInventors: Masayuki Numao, Yoshinobu Ishigaki, Yuji Watanabe
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Patent number: 8615808Abstract: A method is provided to process data so that the data can be externally stored with minimized risk of information leakage. A framework (virtual execution framework) based on virtual machines (VMs) is utilized as a substitute for a trusted institution. Encryption of consolidated data can reduce risk of information leakage and enhance security. Since the virtual execution framework can control connection and direction of communication, financial institutions are allowed to apply encryption to data on their own, which makes the data further appropriate for external storage. By allowing financial institutions to apply their own decryption, it is possible to prevent one of two financial institutions from retrieving externally stored data into the external execution framework without intervention of the other. Additionally, associated acting subjects can be provided with freedom depending on the degree of information leakage risk.Type: GrantFiled: June 30, 2011Date of Patent: December 24, 2013Assignee: International Business Machines CorporationInventor: Yuji Watanabe
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Publication number: 20130330529Abstract: There is provided a diamond film for cutting-tools which has high toughness, excellent adhesiveness, high hardness, and in which tool service life is considerably improved in relation to cutting ultra-hard alloys and other very hard work materials. A diamond film for cutting-tools formed on a base material, in which at least one or more multilayered film layers [A] are included in which the layers are constituted by layering a film layer [?] having a film thickness of 1 ?m or more and 15 ?m or less and a film layer [?] having a film thickness of 1 ?m or more and 20 ?m or less so that the film layer [?] is disposed on the base material side and the film layer [?] is disposed on the surface layer side; the film thickness of the entire film body is set to 4 ?m or more and 30 ?m or less; and the film layer [?] and the film layer [?] have predetermined film compositions.Type: ApplicationFiled: April 1, 2013Publication date: December 12, 2013Applicant: UNION TOOL CO.Inventors: Akira SATO, Yuji WATANABE, Tetsutaro OHORI, Shuntaro SUZUKI, Kazutaka SATO