Patents by Inventor Tatsuya Shimada
Tatsuya Shimada 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: 20250007844Abstract: Provided is a communication system comprising: at least one base station accommodating a wireless terminal; at least one transfer device which transfers, to a higher level, an uplink communication of the wireless terminal received via the base station; and a transfer device controller which controls the at least one transfer device, and the communication system further includes: an information acquisition unit for acquiring information regarding a wireless communication for each quality-of-service class between the base station and the wireless terminal; a rate determination unit for determining, for each of the quality-of-service classes, a shaping rate for traffic shaping such that a packet loss caused by congestion does not occur, on the basis of the information regarding the wireless communication for each quality-of-service class; and a communication control unit for executing, for each quality-of-service class, the traffic shaping at the higher level to the base station on the basis of the shaping rateType: ApplicationFiled: October 12, 2021Publication date: January 2, 2025Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kenji MIYAMOTO, Yoshihito SAKAI, Tatsuya SHIMADA
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Publication number: 20240414646Abstract: A first transmission apparatus receives a data signal transmitted by a communication apparatus from a lower transmission apparatus sets the received data signal in a data unit, and transmits the data unit. A second transmission apparatus receives the data unit transmitted by the first transmission apparatus. An electric power controller calculates an arrival start timing that is a timing at which the data unit including a data signal transmitted from a communication apparatus starts to arrive at the second transmission apparatus on a basis of a code rate and a size of a data transmission block used when the communication apparatus transmits the data signal, and performs control such that a sleep state of a signal processor that performs processing on the data unit in the second transmission apparatus is ended before the arrival start timing.Type: ApplicationFiled: October 11, 2021Publication date: December 12, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hirotaka UJIKAWA, Tatsuya SHIMADA, Yoshihito SAKAI, Kenji MIYAMOTO, Yuka OKAMOTO
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Publication number: 20240405909Abstract: A control device includes an acquisition unit that acquires information from a distributed station that notifies the information related to one or more events occurred within a predetermined time period at a predetermined notification frequency, an information analysis unit that executes analysis processing on the information, a frequency derivation unit that derives an occurrence frequency of the information, a load derivation unit that derives a load of analysis processing of the information, and a frequency control unit that controls the predetermined notification frequency with a frequency lower than the occurrence frequency as an upper limit on the basis of at least one of an analysis result of the information, an occurrence frequency of the information, and a load of analysis processing of the information.Type: ApplicationFiled: October 4, 2021Publication date: December 5, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hiroko NOMURA, Hirotaka UJIKAWA, Kenji MIYAMOTO, Kota ASAKA, Yoshihito SAKAI, Tatsuya SHIMADA
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Publication number: 20240392074Abstract: An insulated wire includes a wire conductor and an insulation covering that is made of a crosslinked polymer material and covers the outer periphery of the wire conductor, the crosslinked polymer material includes a metal ion and a silicone resin having a side chain which includes a substituent group capable of forming an ionic bond with the metal ion, and the silicone resin forms a crosslinked product through the ionic bond between the substituent group and the metal ion. A crosslinkable polymer composition including a metal compound from which the metal ion is released by heat and the silicone resin is disposed on an outer periphery of the wire conductor, and then the crosslinked product is formed from the crosslinkable polymer composition by heating to produce the insulation covering made of the crosslinked polymer material, and thus the insulated wire is produced.Type: ApplicationFiled: September 8, 2022Publication date: November 28, 2024Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Masashi SATO, Takehiro HOSOKAWA, Tatsuya SHIMADA, Makoto MIZOGUCHI
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Publication number: 20240372812Abstract: A signal transfer control device acquires first schedule information in which a signal transfer device that finally transfers a signal to an intermediate node in a first network transfers a signal, and acquires, for each signal transferred from the first network, processing time information required for the intermediate node to transfer the signal to a second network. Further, the signal transfer control device calculates a correlation between a traffic volume in the intermediate node and a time required for signal transfer processing on the basis of the first schedule information and a plurality of pieces of the acquired processing time information, predicts a time required for signal transfer according to the traffic volume in the intermediate node on the basis of the correlation and the processing time information acquired for each signal, and determines second schedule information.Type: ApplicationFiled: July 19, 2021Publication date: November 7, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hiroko NOMURA, Keita TAKAHASHI, Tatsuya SHIMADA
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Patent number: 12136502Abstract: A communication cable includes a solid sheath on an outer periphery of a signal cable having a plurality of insulated wires and in which transmission characteristics hardly decrease due to a pressure in extrusion-molding a sheath. The signal cable 10 includes a plurality of insulated wires 11 each having a conductor 12 and an insulation coating 13 covering an outer periphery of the conductor 12, and a solid sheath 20 covering an outer periphery of the signal cable 10. A melt flow rate of a constituent material of the sheath 20 measured at 200° and with a load of 2.16 kg is 0.25 g/10 min. or more.Type: GrantFiled: February 5, 2021Date of Patent: November 5, 2024Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Ryoma Uegaki, Kinji Taguchi, Takaki Endo, Tatsuya Shimada, Yuta Yasuyoshi
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Publication number: 20240352161Abstract: A a crosslinkable polymer composition which provides a crosslinked product capable of both heat resistance and re-formability, a crosslinked polymer material capable of both heat resistance and re-formability, and an insulated wire and a wiring harness including the crosslinked polymer material. The crosslinkable polymer composition includes: ingredient A from which metal ion is released by heat; and ingredient B including an organic polymer having a side chain, including an electron-withdrawing substituent group capable of forming an ionic bond with the metal ion, and when B is crosslinked via the metal ion to form a crosslinked product, the product has a flow starting temperature of 190° C. or higher and 300° C. or lower. The crosslinked polymer material includes the crosslinked product of the crosslinkable polymer composition. The insulated wire includes a wire conductor, and an insulation coating including the crosslinked polymer material, and the wiring harness including the insulated wire.Type: ApplicationFiled: August 29, 2022Publication date: October 24, 2024Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Masashi SATO, Takehiro HOSOKAWA, Yasuyuki OTSUKA, Tatsuya SHIMADA, Tatsuya HASE, Makoto MIZOGUCHI
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Publication number: 20240343843Abstract: A crosslinkable polymer composition which provides a crosslinked product capable of both heat resistance and re-formability, a crosslinked polymer material capable of both heat resistance and re-formability, and an insulated wire and a wiring harness including the crosslinked polymer material. The crosslinkable polymer composition includes: ingredient A from which metal ion is released by heat; and ingredient B including an organic polymer having a side chain, including an electron-withdrawing substituent group capable of forming an ionic bond with the metal ion, and when B is crosslinked via the metal ion to form a crosslinked product, the product has a flow starting temperature of 190° C. or higher and 300° C. or lower. The crosslinked polymer material includes the crosslinked product of the crosslinkable polymer composition. The insulated wire includes a wire conductor, and an insulation coating including the crosslinked polymer material, and the wiring harness including the insulated wire.Type: ApplicationFiled: August 29, 2022Publication date: October 17, 2024Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Masashi SATO, Takehiro HOSOKAWA, Tatsuya SHIMADA, Makoto MIZOGUCHI
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Patent number: 12119136Abstract: A shielded communication cable. The shielded communication cable includes a pair of insulated wires twisted with each other containing a conductor and an insulation covering which covers the conductor and has the relative dielectric constant of 2.5 or lower, a braided shield which covers the pair of insulated wires, a film-shaped shield which contains a metal film and longitudinally laps the pair of the insulated wires over the braided shield and a jacket having an inner diameter of 3.5 mm or smaller which covers the film-shaped shield. The pair of insulated wires are twisted with each other with a twist pitch of 30 times of an outer diameter of each of the insulated wires or smaller, and the shielded communication cable has a characteristic impedance in range of 100±5?.Type: GrantFiled: January 23, 2020Date of Patent: October 15, 2024Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Ryoma Uegaki, Kinji Taguchi, Takaki Endo, Tatsuya Shimada, Toru Shimizu, Yuta Yasuyoshi, Kenichiro Iwama
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Publication number: 20240323800Abstract: According to an aspect of the present invention, there is a wireless communication system including: a plurality of end wireless devices that include an antenna and transmit and receive signals to and from a wireless terminal which is a communication target; a plurality of transfer devices that transfer signals which are transmitted and received by the wireless terminal which is a communication target and the end wireless device; and a transfer management device that, in a case where communication status information indicating a status of communication between the wireless terminal and the end wireless devices is received, executes a transfer route control process of controlling paths between the plurality of transfer devices on the basis of the received communication status information, wherein the end wireless devices execute a switching process of controlling operations of the end wireless devices relating to communication between the end wireless devices and the wireless terminal on the basis of the commuType: ApplicationFiled: August 6, 2021Publication date: September 26, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kenji MIYAMOTO, Yoshihito SAKAI, Tatsuya SHIMADA
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Publication number: 20240323575Abstract: A control device including a collection unit that acquires, at a predetermined cycle, cooperation information, which is information indicating a communication state between a communication system that includes a wireless station including an antenna and an allocation device that allocates a wavelength, and a terminal to be communicated, an analysis unit that analyzes the communication state in the communication system on the basis of the cooperation information, and an allocation control unit that controls execution of wavelength allocation by the allocation device on the basis of an analysis result of the analysis unit.Type: ApplicationFiled: October 4, 2021Publication date: September 26, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Karin UMEDA, Kota ASAKA, Hiroko NOMURA, Hiroshi O, Yoshihito SAKAI, Hirotaka UJIKAWA, Kenji MIYAMOTO, Yuka OKAMOTO, Tatsuya SHIMADA
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Publication number: 20240323746Abstract: A communication system including one or more base stations that accommodates wireless terminals, one or more transfer apparatuses that transfer uplink communication of the wireless terminal received via the base station to an upper side, and a transfer apparatus controller that controls the one or more transfer apparatuses includes an information acquisition unit that acquires information on wireless communication between the base station and the wireless terminal for each traffic flow, a rate determination unit that determines a shaping rate of the traffic shaping for each traffic flow, so that delay jitter in the base station is mitigated on an upper side with respect to the base station, on the basis of the information on the wireless communication for each traffic flow, and a communication control unit that executes traffic shaping on the upper side with respect to the base station on the basis of the shaping rate determined by the rate determination unit.Type: ApplicationFiled: October 12, 2021Publication date: September 26, 2024Inventors: Kenji Miyamoto, Yoshihito SAKAI, Tatsuya SHIMADA, Keita Takahashi
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Publication number: 20240282484Abstract: A communication cable 1 includes: a core wire 2 having a conductor 21 and an insulating layer 22 covering an outer circumference of the conductor 21; and a film-like shield 3 that longitudinally surrounds an outer circumference of the core wire 2, in which the film-like shield 3 includes a metal base layer 32 constituted by a metal layer, and a linear or band-shaped stripe member 33 that is in intimate contact with the metal base layer 32, and a plurality of the stripe members 33 extend in an axial direction A1 of the core wire 2 and are spaced apart from each other in a circumferential direction A2 of the core wire.Type: ApplicationFiled: June 6, 2022Publication date: August 22, 2024Inventors: Shuhei OZU, Hiroyuki KODAMA, Tatsuya SHIMADA, Hiroyuki KOBAYASHI, Yuta YASUYOSHI
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Publication number: 20240270955Abstract: Provided is a silane-crosslinkable polyolefin-based flame-retardant resin composition having high flexibility and high handleability, and an insulated electric wire and a wire harness obtained using the flame-retardant resin composition. The flame-retardant resin composition includes, as resin components: a silane-grafted polyolefin (A) obtained by grafting a silane coupling agent onto a polyolefin; an unmodified polyolefin (B); and a modified polyolefin (C) having one or more functional groups selected from a carboxyl group, an ester group, an acid anhydride group, an amino group, and an epoxy group. The resin composition further includes a flame retardant (D) and a crosslinking catalyst (E). A crosslinked product obtained by subjecting the flame-retardant resin composition to silane crosslinking has a melting point of 80° C. or higher and a flexural modulus of 100 MPa or less.Type: ApplicationFiled: August 2, 2021Publication date: August 15, 2024Inventors: Tatsuya HASE, Tatsuya SHIMADA
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Patent number: 12018146Abstract: A composition for a wire coating material containing a silane-crosslinked polyolefin which is excellent in flame-retardancy, fusion resistance, and heat-deformation resistance, and an insulated wire and a wiring harness coating the composition. A composition for a wire coating material contains (A) a silane-grafted polyolefin which is a polyolefin graft-modified with a silane coupling agent, (B) an unmodified polyolefin, (C) a modified polyolefin having one or more functional groups selected from the group consisting of a carboxy group, an ester group, an acid anhydride group, an amino group, and an epoxy group, (D) a flame retardant, and (E) a crosslinking catalyst. The polyolefin of (A) the silane-grafted polyolefin has a density of 0.855 to 0.890 g/cm3 in an ungrafted state and has a melting point of 80° C. or higher, and the unmodified polyolefin has a density of 0.855 to 0.950 g/cm3.Type: GrantFiled: February 27, 2019Date of Patent: June 25, 2024Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventor: Tatsuya Shimada
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Publication number: 20240171521Abstract: A signal transfer device according to an embodiment receives a plurality of signals including an aperiodic signal having a higher priority than other signals, respectively holds the plurality of received signals by a plurality of buffers according to the priority, acquires signal information including at least one of a time at which the aperiodic signal is transmitted or received and a data length of the aperiodic signal, predicts a timing at which the aperiodic signal arrives at the buffer based on the acquired signal information, sets reservation of a period for transmitting the aperiodic signal with priority over other signals based on the predicted timing, controls the plurality of buffers to output the aperiodic signal with priority over other signals in the period in which the reservation is set, and transmits the signal output by the buffer.Type: ApplicationFiled: March 23, 2021Publication date: May 23, 2024Inventors: Takamitsu TOCHINO, Tatsuya SHIMADA, Keita Takahashi, Yoshihito SAKAI
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Publication number: 20240150554Abstract: Provided are a communication cable that includes a resin composition formed by adding a halogenated flame retardant and a flame retardant auxiliary to an olefin-based polymer and is excellent in stability of the communication properties and heat resistance, a wire harness that includes such a communication cable, and a manufacturing method according to which such a communication cable can be manufactured with high productivity. A communication cable 1 includes a signal wire 10 constituted by a pair of insulated wires 11 each having a conductor 12 and an insulating coating 13 covering the outer circumference of the conductor 12, and an insulating external layer 20 covering the outer circumference of the signal wire 10. The characteristic impedance is within a range of 100±10?.Type: ApplicationFiled: February 22, 2022Publication date: May 9, 2024Inventors: Tatsuya SHIMADA, Yuta YASUYOSHI, Katsushi SAKAMOTO
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Publication number: 20240105362Abstract: A communication electric wire 1 includes: a conductor 2; an insulating layer 3 covering an outer periphery of the conductor 2; and a magnetic sheath layer 8 covering an outside of the insulating layer 3, wherein the magnetic sheath layer 8 contains an organic polymer and a magnetic material, the magnetic sheath layer 8 contains 15 parts by mass or more of an acid-modified polymer in 100 parts by mass of the entire organic polymer, and the magnetic material is composed of particles with an average particle diameter of 50 ?m or less, and a content of the magnetic material in the magnetic sheath layer 8 is 300 parts by mass or more with respect to 100 parts by mass of the entire organic polymer.Type: ApplicationFiled: January 6, 2022Publication date: March 28, 2024Inventors: Yuta YASUYOSHI, Tatsuya SHIMADA
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Publication number: 20240047101Abstract: A communication cable 1 is provided with a conductor 2, an insulation layer 3 containing an organic polymer and covering an outer periphery of the conductor 2, a metal foil 5 for covering an outer periphery of the insulation layer 3, and a magnetic sheath layer 7 containing an organic polymer and a powdered magnetic material and covering an outer periphery of the metal foil 5. A tensile modulus of elasticity of the magnetic sheath layer 7 is lower than that of the insulation layer 3. Assuming that an organic polymer having a melting point of 100° C. or lower is a low melting point polymer and a mass ratio of the low melting point polymer to organic polymer components constituting each layer is a low melting point component ratio, the low melting point component ratio is larger in the magnetic sheath layer 7 than in the insulation layer 3.Type: ApplicationFiled: December 22, 2021Publication date: February 8, 2024Inventors: Yuta YASUYOSHI, Tatsuya SHIMADA
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Patent number: 11837378Abstract: A communication cable includes a coating layer that contains a powdery magnetic material and that can suppress the occurrence of a powdery substance containing the magnetic material when processing the coating layer. The communication cable further includes a conductor, an insulating coating that covers an outer circumstance of the conductor, and a magnetic sheath layer that covers an outer side of the insulating coating, and the magnetic sheath layer contains the magnetic material and the magnetic material has a particle shape with an average particle diameter of not more than 50 ?m and an aspect ratio of not greater than 4.Type: GrantFiled: December 7, 2020Date of Patent: December 5, 2023Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Toru Shimizu, Kinji Taguchi, Tatsuya Shimada, Takaki Endo, Ryoma Uegaki, Yuta Yasuyoshi