Patents by Inventor Satoshi Shigematsu
Satoshi Shigematsu 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: 20200311955Abstract: A method of inspecting a device under test for defects includes detecting intensity and directional information of radiation rays emanating from a device under test by a light field camera, generating synthesized images of the device under test detected by the light field camera, and determining a depth of a defect in the device under test from the synthesized images.Type: ApplicationFiled: April 1, 2019Publication date: October 1, 2020Inventors: Yasuhiro Yoshitake, Taiki Murata, Satoshi Shigematsu
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Patent number: 10766347Abstract: A battery unit (38F) comprising a plurality of batteries (3) and a connection control device (35a, 35b, 36a, 36b, 36d, 36e) which controls electrical connection relating to the battery unit (38F) are provided in a vehicle (1). The battery unit (38F) comprises two groups (S1R, S1L) of the batteries (3) disposed to have a space (G) there-between, and the connection control device (35a, 35b, 36a, 36b, 36d, 36e) is disposed in the space (G). The layout of the connection control device (35a, 35b, 36a, 36b, 36d, 36e) is thereby optimized and the length of a harness (34) can be shortened.Type: GrantFiled: February 19, 2010Date of Patent: September 8, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Makoto Iwasa, Hidetoshi Kadota, Tadayoshi Hashimura, Satoshi Shigematsu, Nobuhiro Mori, Kentaro Hatta
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Publication number: 20200203178Abstract: Provided is a method of evaluating the impurity gettering capability of an epitaxial silicon wafer, which allows for very precise evaluation of the impurity gettering behavior of a modified layer formed immediately under an epitaxial layer, the modified layer containing carbon in solid solution. In this method, a modified layer located immediately under an epitaxial layer, the modified layer containing carbon in solid solution, is analyzed by three-dimensional atom probe microscopy, and the impurity gettering capability of the modified layer is evaluated based on a three-dimensional map of carbon in the modified layer, obtained by the analysis.Type: ApplicationFiled: January 12, 2018Publication date: June 25, 2020Applicant: SUMCO CORPORATIONInventors: Satoshi SHIGEMATSU, Ryosuke OKUYAMA, Kazunari KURITA
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Patent number: 10602407Abstract: A CU (Central Unit) executes scheduling for allocating radio resources of RRUs (Remote Radio Units) to radio transmission of downlink data while broadcasting, to DMs (Data Managers) via MFH, downlink data from MBH. Each DM selects, based on an allocation result obtained by scheduling, the downlink data of an RRU (Remote Radio Unit) corresponding to the self DM from the accumulated downlink data from the CU, and transfers the selected downlink data to the corresponding RRU while discarding the downlink data of other RRUs. Based on the allocation result, each RRU performs radio transmission of the downlink data from the DM to a corresponding UE (User Equipment) using the designated radio resource. This makes it possible to efficiently transfer the downlink data from the CU to each RRU via the MFH constructed by a TDM system represented by TDM-PON.Type: GrantFiled: June 22, 2016Date of Patent: March 24, 2020Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hiroyuki Uzawa, Yuki Arikawa, Kenji Kawai, Satoshi Shigematsu
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Patent number: 10485008Abstract: A convergence pattern selection unit (10A) sequentially generates a plurality of different patterns based on designated initial conditions, selects, as a convergence pattern, a pattern in which evaluation value has converged to an extreme value, and repeatedly executes selection of the convergence pattern by changing the initial conditions every time the convergence pattern is selected. A transmission pattern determination unit (10B) selects, as an optimum transmission pattern, one of the convergence patterns obtained by the convergence pattern selection unit (10A), which has the highest evaluation value. This allows searches for an optimum transmission pattern having a better evaluation value.Type: GrantFiled: August 26, 2016Date of Patent: November 19, 2019Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yuki Arikawa, Hiroyuki Uzawa, Kenji Kawai, Satoshi Shigematsu
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Patent number: 10397133Abstract: An upstream allocation circuit (14) and a downstream allocation circuit (15) are provided in an OLT (1). For example, a superimposed frame obtained by bundling upstream frames (upstream control frames+upstream data frames) from all ONUS is input to the upstream allocation circuit (14) via a frame reproduction circuit (12-1). The superimposed frame may be generated at the stage of optical signals or generated after converting optical signals into electrical signals. The upstream allocation circuit (14) allocates each of the upstream control frames bundled into the superimposed frame to a predetermined PON control circuit (13) based on information (PON port number or LLID) added to the frames. The downstream allocation circuit (15) allocates, to a preset frame reproduction circuit (12), each downstream control frames output from the PON control circuits (13).Type: GrantFiled: July 14, 2016Date of Patent: August 27, 2019Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Saki Hatta, Tomoaki Kawamura, Kenji Kawai, Nobuyuki Tanaka, Satoshi Shigematsu, Namiko Ikeda, Shoko Ohteru, Junichi Kato
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Publication number: 20190245715Abstract: A link control circuit (10) includes a plurality of hardware processing units serving as an uplink parser unit (11) configured to output, as an event, the contents of link control notified by an uplink control frame, a timer unit (12) configured to start/stop a timer and output a link event in accordance with expiration of the timer, a frame generation unit (13) configured to generate a downlink control frame containing the contents of link control, and a state management unit (15) configured to manage the state of the link in accordance with these events, and instruct the timer unit to start/stop the timer and the frame generation unit to generate the downlink control frame in accordance with the state of the link, thereby controlling connection establishment, maintenance, and disconnection of the link.Type: ApplicationFiled: July 18, 2017Publication date: August 8, 2019Inventors: Saki HATTA, Nobuyuki TANAKA, Satoshi SHIGEMATSU
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Patent number: 10193630Abstract: A selection and distribution circuit (13) is provided between N optical transceivers (11) and one PON control circuit (12). The selection and distribution circuit (13) selects the optical transceiver (11) corresponding to an upstream frame that time-divisionally arrives, thereby transferring the upstream frame opto-electrically converted by the transceiver (11) to the PON control circuit (12) and distributing a downstream frame from the PON control circuit (12) to each optical transceiver (11). A power supply control circuit (23) stops power supply to at least one of one of optical transceivers (11) that are not used to transfer the frame of the optical transceivers (11) and a circuit that is not used to transfer the frame in the selection and distribution circuit (13). This can reduce the system cost per ONU in the optical transmission system.Type: GrantFiled: March 4, 2016Date of Patent: January 29, 2019Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko Ohteru, Namiko Ikeda, Saki Hatta, Satoshi Shigematsu, Nobuyuki Tanaka, Kenji Kawai, Junichi Kato, Tomoaki Kawamura, Hiroyuki Uzawa, Yuki Arikawa, Naoki Miura
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Patent number: 10074830Abstract: A battery housing structure for housing a battery body that includes a positive electrode layer, a solid electrolyte layer, and a negative electrode layer. A housing member houses the battery body and includes conductors connected to the positive electrode layer and the negative electrode layer, respectively. An interposition member is interposed between the battery body and the housing member.Type: GrantFiled: March 26, 2014Date of Patent: September 11, 2018Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Satoshi Shigematsu, Kazuhiro Yamada, Masanori Endo
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Patent number: 10062501Abstract: An ESD protection device includes a multilayer body including base material layers, a hollow portion inside the multilayer body, a ground electrode exposed at the hollow portion, first and second discharge electrodes exposed at the shared hollow portion and opposing the common ground electrode, and an auxiliary discharge electrode including conductive particles dispersed in the base material layer and extending along an inner surface of the hollow portion. At least the auxiliary discharge electrode in an adjacent region between the first discharge electrode and the second discharge electrode is divided into a portion on the first discharge electrode side and a portion on the second discharge electrode side by a non-formation section where the auxiliary discharge electrode is not provided in the hollow portion.Type: GrantFiled: August 15, 2016Date of Patent: August 28, 2018Assignee: Murata Manufacturing Co., Ltd.Inventor: Satoshi Shigematsu
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Publication number: 20180242337Abstract: A convergence pattern selection unit (10A) sequentially generates a plurality of different patterns based on designated initial conditions, selects, as a convergence pattern, a pattern in which evaluation value has converged to an extreme value, and repeatedly executes selection of the convergence pattern by changing the initial conditions every time the convergence pattern is selected. A transmission pattern determination unit (10B) selects, as an optimum transmission pattern, one of the convergence patterns obtained by the convergence pattern selection unit (10A), which has the highest evaluation value. This allows searches for an optimum transmission pattern having a better evaluation value.Type: ApplicationFiled: August 26, 2015Publication date: August 23, 2018Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Yuri ARIKAWA, Hiroyuki UZAWA, Kenji KAWAI, Satoshi SHIGEMATSU
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Publication number: 20180212897Abstract: An upstream allocation circuit (14) and a downstream allocation circuit (15) are provided in an OLT (1). For example, a superimposed frame obtained by bundling upstream frames (upstream control frames+upstream data frames) from all ONUS is input to the upstream allocation circuit (14) via a frame reproduction circuit (12-1). The superimposed frame may be generated at the stage of optical signals or generated after converting optical signals into electrical signals. The upstream allocation circuit (14) allocates each of the upstream control frames bundled into the superimposed frame to a predetermined PON control circuit (13) based on information (PON port number or LLID) added to the frames. The downstream allocation circuit (15) allocates, to a preset frame reproduction circuit (12), each downstream control frames output from the PON control circuits (13).Type: ApplicationFiled: July 14, 2016Publication date: July 26, 2018Inventors: Saki HATTA, Tomoaki KAWAMURA, Kenji KAWAI, Nobuyuki TANAKA, Satoshi SHIGEMATSU, Namiko IKEDA, Shoko OHTERU, Junichi KATO
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Publication number: 20180192328Abstract: A CU (Central Unit) executes scheduling for allocating radio resources of RRUs (Remote Radio Units) to radio transmission of downlink data while broadcasting, to DMs (Data Managers) via MFH, downlink data from MBH. Each DM selects, based on an allocation result obtained by scheduling, the downlink data of an RRU (Remote Radio Unit) corresponding to the self DM from the accumulated downlink data from the CU, and transfers the selected downlink data to the corresponding RRU while discarding the downlink data of other RRUs. Based on the allocation result, each RRU performs radio transmission of the downlink data from the DM to a corresponding UE (User Equipment) using the designated radio resource. This makes it possible to efficiently transfer the downlink data from the CU to each RRU via the MFH constructed by a TDM system represented by TDM-PON.Type: ApplicationFiled: June 22, 2016Publication date: July 5, 2018Inventors: Hiroyuki UZAWA, Yuki ARIKAWA, Kenji KAWAI, Satoshi SHIGEMATSU
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Patent number: 9954617Abstract: An OLT (1) is formed by N optical transceivers (11), one PON control circuit (12), and one selection and distribution circuit (13). An optical transceiver selection control signal (SC) is transferred from the PON control circuit (12) to the selection and distribution circuit (13). The optical transceiver selection control signal (SC) indicates the timing of a discovery window, the timing of a grant, and a logical link identification number of a registered ONU assigned to the grant (a logical link identification number for a logical link with the registered ONU). The selection and distribution circuit (13) selects one optical transceiver (11-s (s is an integer falling within a range of 0 to N?1)) from the optical transceivers (11-0 to 11-N?1) based on the optical transceiver selection control signal (SC) from the PON control circuit (12).Type: GrantFiled: August 19, 2015Date of Patent: April 24, 2018Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kenji Kawai, Yuki Arikawa, Tomoaki Kawamura, Nobuyuki Tanaka, Satoshi Shigematsu, Naoki Miura
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Publication number: 20180062746Abstract: A selection and distribution circuit (13) is provided between N optical transceivers (11) and one PON control circuit (12). The selection and distribution circuit (13) selects the optical transceiver (11) corresponding to an upstream frame that time-divisionally arrives, thereby transferring the upstream frame opto-electrically converted by the transceiver (11) to the PON control circuit (12) and distributing a downstream frame from the PON control circuit (12) to each optical transceiver (11). A power supply control circuit (23) stops power supply to at least one of one of optical transceivers (11) that are not used to transfer the frame of the optical transceivers (11) and a circuit that is not used to transfer the frame in the selection and distribution circuit (13). This can reduce the system cost per ONU in the optical transmission system.Type: ApplicationFiled: March 4, 2016Publication date: March 1, 2018Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko OHTERU, Namiko IKEDA, Saki HATTA, Satoshi SHIGEMATSU, Nobuyuki TANAKA, Kenji KAWAI, Junichi KATO, Tomoaki KAWAMURA, Hiroyuki UZAWA, Yuki ARIKAWA, Naoki MIURA
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Publication number: 20170272167Abstract: An OLT (1) is formed by N optical transceivers (11), one PON control circuit (12), and one selection and distribution circuit (13). An optical transceiver selection control signal (SC) is transferred from the PON control circuit (12) to the selection and distribution circuit (13). The optical transceiver selection control signal (SC) indicates the timing of a discovery window, the timing of a grant, and a logical link identification number of a registered ONU assigned to the grant (a logical link identification number for a logical link with the registered ONU). The selection and distribution circuit (13) selects one optical transceiver (11-s (s is an integer falling within a range of 0 to N?1)) from the optical transceivers (11-0 to 11-N?1) based on the optical transceiver selection control signal (SC) from the PON control circuit (12).Type: ApplicationFiled: August 19, 2015Publication date: September 21, 2017Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kenji KAWAI, Yuki ARIKAWA, Tomoaki KAWAMURA, Nobuyuki TANAKA, Satoshi SHIGEMATSU, Naoki MIURA
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Patent number: 9602212Abstract: A communication system and method comprising a higher-network apparatus and a lower-network apparatus connected through a PON system, which transfers uplink data from the lower-network apparatus to the higher-network apparatus at high speed so as to meet severe conditions required for a delay time between the higher-network apparatus and the lower-network apparatus. The method including a scheduling execution process in which a higher-network apparatus performs scheduling for uplink communication from each of the lower-network apparatus to the device itself and an uplink data transmission permission process in which the higher-network apparatus calculates a transmission time and a transmission permission amount of uplink data transmitted from an ONU to OLT based on the scheduling for uplink communication and notifies the OLT.Type: GrantFiled: November 6, 2013Date of Patent: March 21, 2017Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shigeru Kuwano, Jun Terada, Noriko Iiyama, Takeshi Sakamoto, Nobuyuki Tanaka, Satoshi Shigematsu
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Publication number: 20160351327Abstract: An ESD protection device includes a multilayer body including base material layers, a hollow portion inside the multilayer body, a ground electrode exposed at the hollow portion, first and second discharge electrodes exposed at the shared hollow portion and opposing the common ground electrode, and an auxiliary discharge electrode including conductive particles dispersed in the base material layer and extending along an inner surface of the hollow portion. At least the auxiliary discharge electrode in an adjacent region between the first discharge electrode and the second discharge electrode is divided into a portion on the first discharge electrode side and a portion on the second discharge electrode side by a non-formation section where the auxiliary discharge electrode is not provided in the hollow portion.Type: ApplicationFiled: August 15, 2016Publication date: December 1, 2016Inventor: Satoshi SHIGEMATSU
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Publication number: 20150311980Abstract: This invention provides a communication system constituted of a higher-network apparatus and a lower-network apparatus connected through a PON system, and an object of the invention is to transfer uplink data from the lower-network apparatus to the higher-network apparatus at high speed so as to meet severe conditions required for a delay time between the higher-network apparatus and the lower-network apparatus.Type: ApplicationFiled: November 6, 2013Publication date: October 29, 2015Inventors: Shigeru KUWANO, Jun TERADA, Noriko IIYAMA, Takeshi SAKAMOTO, Nobuyuki TANAKA, Satoshi SHIGEMATSU
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Patent number: 8928279Abstract: An electric vehicle structure is provided with a charging port, an electric charging harness and an intermediate connector. The charging port is configured to be provided on a portion of a vehicle. The electric charging harness includes a first wiring portion electrically connected to the charging port and a second wiring portion configured to be connected to an electrical component of the vehicle. The intermediate connector releasably connects the first wiring portion of the electric charging harness to the second wiring portion of the electric charging harness with a repeatable connecting and disconnecting connection.Type: GrantFiled: April 13, 2010Date of Patent: January 6, 2015Assignee: Nissan Motor Co., Ltd.Inventors: Kiyohito Sekido, Satoshi Shigematsu