Patents by Inventor Ryoma TOYODA
Ryoma TOYODA 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: 11516047Abstract: A communication path in a loop form is formed by trunk lines and a redundant communication path, which is formed by a switch and a backup line. In order to be applied to a bus-type communication network such as a CAN, the switch is normally off, and the backup line is disconnected from a path in a steady state. A disconnection detection unit is provided at each of joint connectors. When any disconnection detection unit detects disconnection, the switch is closed to enable use of the redundant path. Further, content of a routing map of a central gateway is automatically rewritten to preferentially select the redundant path that is not disconnected, and thus the path is changed.Type: GrantFiled: February 16, 2021Date of Patent: November 29, 2022Assignee: YAZAKI CORPORATIONInventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
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Patent number: 11456913Abstract: Switching hubs such as relay devices capable of path control are arranged at a plurality of branch positions respectively on a wire harness including a trunk line of a communication line. Each of the relay devices includes a failure detection part, a routing map, and a path control part. The trunk line of the communication line is formed to make it possible to use a plurality of types of paths selectively. When the failure detection part in any relay device detects a failure, an instruction of path change is given to another relay device therefrom. When any relay device receives an instruction of path change from another relay device, the routing maps in the relay device receiving the instruction are switched according to a failure occurrence portion. A VLAN is constructed on an Ethernet communication network, and logical assignment of the VLAN is controlled by a central gateway.Type: GrantFiled: February 16, 2021Date of Patent: September 27, 2022Assignee: YAZAKI CORPORATIONInventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
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Patent number: 11323286Abstract: A plurality of zones is formed in a communication network on the vehicle, and a communication path in a loop form is formed in each zone by zone trunk lines and a backup line. The backup line is connected by a switch only at the time of disconnection so that the loop is not closed. At the time of disconnection detection, an instruction is automatically given to rewrite content of routing maps on zone ECUs and a central gateway. Since each node preferentially selects a communication path that bypasses a disconnection portion from the start of communication by rewriting the content of the routing maps, it is possible to avoid an increase in communication delay. An inter-zone backup line connecting a plurality of zones is provided to enable the use of a new path across the plurality of zones at the time of disconnection.Type: GrantFiled: February 16, 2021Date of Patent: May 3, 2022Assignee: YAZAKI CORPORATIONInventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
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Patent number: 11323861Abstract: An in-vehicle communication system including independent communication hub devices each incorporating a function of relaying communication and a function of controlling a communication path among a plurality of communication connectors, in which each of the communication hub devices includes an internal power supply unit configured to generate, based on input power supply power supplied from a main power supply on a vehicle side, stabilized power supply power necessary for operation of an internal circuit, and a backup power supply output unit configured to supply the input power supply power or the stabilized power supply power generated by the internal power supply unit to the other communication hub device as backup power, in which a backup power supply line is provided which connects the backup power supply output units of the plurality of communication hub devices.Type: GrantFiled: May 14, 2020Date of Patent: May 3, 2022Assignee: YAZAKI CORPORATIONInventors: Ryoma Toyoda, Kunihiko Yamada, Terumitsu Sugimoto, Masashi Suzuki, Kenichi Katsumata, Jun Goto
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Patent number: 11128276Abstract: A noise filter includes a filter circuit including a noise reduction element that reduces a noise component, a conductive first circuit connection member to which a first connection portion of the noise reduction element is electrically connected, and a conductive second circuit connection member to which a second connection portion of the noise reduction element is electrically connected, a first electric connection structure that electrically connects an intermediate connection portion of a core wire of a first electric wire to the first circuit connection member, and a second electric connection structure that electrically connects an intermediate connection portion of a core wire of a second electric wire whose one end is grounded, to the second circuit connection member.Type: GrantFiled: July 2, 2019Date of Patent: September 21, 2021Assignee: YAZAKI CORPORATIONInventors: Masashi Tsukamoto, Kunihiko Yamada, Ryoma Toyoda, Keigo Tsubo
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Publication number: 20210258188Abstract: A communication path in a loop form is formed by trunk lines and a redundant communication path, which is formed by a switch and a backup line. In order to be applied to a bus-type communication network such as a CAN, the switch is normally off, and the backup line is disconnected from a path in a steady state. A disconnection detection unit is provided at each of joint connectors. When any disconnection detection unit detects disconnection, the switch is closed to enable use of the redundant path. Further, content of a routing map of a central gateway is automatically rewritten to preferentially select the redundant path that is not disconnected, and thus the path is changed.Type: ApplicationFiled: February 16, 2021Publication date: August 19, 2021Inventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
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Publication number: 20210258189Abstract: A plurality of zones is formed in a communication network on the vehicle, and a communication path in a loop form is formed in each zone by zone trunk lines and a backup line. The backup line is connected by a switch only at the time of disconnection so that the loop is not closed. At the time of disconnection detection, an instruction is automatically given to rewrite content of routing maps on zone ECUs and a central gateway. Since each node preferentially selects a communication path that bypasses a disconnection portion from the start of communication by rewriting the content of the routing maps, it is possible to avoid an increase in communication delay. An inter-zone backup line connecting a plurality of zones is provided to enable the use of a new path across the plurality of zones at the time of disconnection.Type: ApplicationFiled: February 16, 2021Publication date: August 19, 2021Inventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
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Publication number: 20210258204Abstract: Switching hubs such as relay devices capable of path control are arranged at a plurality of branch positions respectively on a wire harness including a trunk line of a communication line. Each of the relay devices includes a failure detection part, a routing map, and a path control part. The trunk line of the communication line is formed to make it possible to use a plurality of types of paths selectively. When the failure detection part in any relay device detects a failure, an instruction of path change is given to another relay device therefrom. When any relay device receives an instruction of path change from another relay device, the routing maps in the relay device receiving the instruction are switched according to a failure occurrence portion. A VLAN is constructed on an Ethernet communication network, and logical assignment of the VLAN is controlled by a central gateway.Type: ApplicationFiled: February 16, 2021Publication date: August 19, 2021Inventors: Ryoma Toyoda, Kunihiko Yamada, Masashi Tsukamoto, Junki Ema, Masaaki Suguro
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Patent number: 11056775Abstract: An integrated antenna module to be applied to an in-vehicle system includes an antenna element group that is mounted on a vehicle and is formed of a plurality of antenna elements, and the antenna element group constitutes a plurality of antennas capable of transmitting or receiving a plurality of electromagnetic waves by combining the plurality of antenna elements.Type: GrantFiled: February 21, 2019Date of Patent: July 6, 2021Assignee: YAZAKI CORPORATIONInventors: Takashi Shiroki, You Yanagida, Kunihiko Yamada, Ryoma Toyoda
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Patent number: 10994676Abstract: An electric connection box includes: the housing, or a plurality of communication connectors provided therein; a communication switch circuit, which is provided inside the housing, has a communication relay function and controls a communication path between the plurality of communication connectors; and a common power supply circuit, which is provided inside the housing and capable of supplying common power generated based on the power from the input side power supply line to a plurality of electric circuits including the communication switch circuit.Type: GrantFiled: May 13, 2020Date of Patent: May 4, 2021Assignee: YAZAKI CORPORATIONInventors: Ryoma Toyoda, Kunihiko Yamada, Terumitsu Sugimoto, Masashi Suzuki, Kenichi Katsumata, Jun Goto
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Publication number: 20200396577Abstract: An in-vehicle communication system including independent communication hub devices each incorporating a function of relaying communication and a function of controlling a communication path among a plurality of communication connectors, in which each of the communication hub devices includes an internal power supply unit configured to generate, based on input power supply power supplied from a main power supply on a vehicle side, stabilized power supply power necessary for operation of an internal circuit, and a backup power supply output unit configured to supply the input power supply power or the stabilized power supply power generated by the internal power supply unit to the other communication hub device as backup power, in which a backup power supply line is provided which connects the backup power supply output units of the plurality of communication hub devices.Type: ApplicationFiled: May 14, 2020Publication date: December 17, 2020Inventors: Ryoma Toyoda, Kunihiko Yamada, Terumitsu Sugimoto, Masashi Suzuki, Kenichi Katsumata, Jun Goto
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Publication number: 20200391680Abstract: An electric connection box includes: the housing, or a plurality of communication connectors provided therein; a communication switch circuit, which is provided inside the housing, has a communication relay function and controls a communication path between the plurality of communication connectors; and a common power supply circuit, which is provided inside the housing and capable of supplying common power generated based on the power from the input side power supply line to a plurality of electric circuits including the communication switch circuit.Type: ApplicationFiled: May 13, 2020Publication date: December 17, 2020Inventors: Ryoma Toyoda, Kunihiko Yamada, Terumitsu Sugimoto, Masashi Suzuki, Kenichi Katsumata, Jun Goto
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Patent number: 10811790Abstract: A noise filter includes a filter circuit including a noise reduction element that reduces a noise component, a conductive first circuit connection member to which a first connection portion of the noise reduction element is electrically connected, and a conductive second circuit connection member to which a second connection portion of the noise reduction element is electrically connected, and an electric connection structure that electrically connects an intermediate connection portion of a core wire of an electric wire to one of the first circuit connection member and the second circuit connection member. The electric connection structure includes a circuit side connection body provided in one of the first circuit connection member and the second circuit connection member and indirectly or directly electrically connected to the intermediate connection portion by an elastic force indirectly or directly exerted on the intermediate connection portion.Type: GrantFiled: June 27, 2019Date of Patent: October 20, 2020Assignee: YAZAKI CORPORATIONInventors: Kunihiko Yamada, Masashi Tsukamoto, Ryoma Toyoda
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Patent number: 10777875Abstract: A loop antenna transmits and receives a radio wave including a signal. A RFID detection circuit includes a circuit terminal and a circuit terminal connected with the loop antenna. A switch circuit switches, according to a state of an object to be detected, between a gain reduced state in which a gain of the loop antenna is reduced and a gain unreduced state in which the gain of the loop antenna is not reduced. The switch circuit has a first point of action and a second point of action for reducing the gain of the loop antenna, when ? is a wavelength of the radio wave, the point of action is located within a gain reduction range that represents a range on the loop antenna from the circuit terminal to a position of ?/32 away from the circuit terminal in a direction in which the loop antenna extends.Type: GrantFiled: October 1, 2018Date of Patent: September 15, 2020Assignee: YAZAKI CORPORATIONInventors: You Yanagida, Ryoma Toyoda
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Publication number: 20200014356Abstract: A noise filter includes a filter circuit including a noise reduction element that reduces a noise component, a conductive first circuit connection member to which a first connection portion of the noise reduction element is electrically connected, and a conductive second circuit connection member to which a second connection portion of the noise reduction element is electrically connected, a first electric connection structure that electrically connects an intermediate connection portion of a core wire of a first electric wire to the first circuit connection member, and a second electric connection structure that electrically connects an intermediate connection portion of a core wire of a second electric wire whose one end is grounded, to the second circuit connection member.Type: ApplicationFiled: July 2, 2019Publication date: January 9, 2020Applicant: Yazaki CorporationInventors: Masashi TSUKAMOTO, Kunihiko YAMADA, Ryoma TOYODA, Keigo TSUBO
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Publication number: 20200014132Abstract: A noise filter includes a filter circuit including a noise reduction element that reduces a noise component, a conductive first circuit connection member to which a first connection portion of the noise reduction element is electrically connected, and a conductive second circuit connection member to which a second connection portion of the noise reduction element is electrically connected, and an electric connection structure that electrically connects an intermediate connection portion of a core wire of an electric wire to one of the first circuit connection member and the second circuit connection member. The electric connection structure includes a circuit side connection body provided in one of the first circuit connection member and the second circuit connection member and indirectly or directly electrically connected to the intermediate connection portion by an elastic force indirectly or directly exerted on the intermediate connection portion.Type: ApplicationFiled: June 27, 2019Publication date: January 9, 2020Inventors: Kunihiko Yamada, Masashi Tsukamoto, Ryoma Toyoda
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Publication number: 20190267702Abstract: An integrated antenna module to be applied to an in-vehicle system includes an antenna element group that is mounted on a vehicle and is formed of a plurality of antenna elements, and the antenna element group constitutes a plurality of antennas capable of transmitting or receiving a plurality of electromagnetic waves by combining the plurality of antenna elements.Type: ApplicationFiled: February 21, 2019Publication date: August 29, 2019Inventors: Takashi Shiroki, You Yanagida, Kunihiko Yamada, Ryoma Toyoda
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Publication number: 20190103651Abstract: A loop antenna transmits and receives a radio wave including a signal. A RFID detection circuit includes a circuit terminal and a circuit terminal connected with the loop antenna. A switch circuit switches, according to a state of an object to be detected, between a gain reduced state in which a gain of the loop antenna is reduced and a gain unreduced state in which the gain of the loop antenna is not reduced. The switch circuit has a first point of action and a second point of action for reducing the gain of the loop antenna, when ? is a wavelength of the radio wave, the point of action is located within a gain reduction range that represents a range on the loop antenna from the circuit terminal to a position of ?/32 away from the circuit terminal in a direction in which the loop antenna extends.Type: ApplicationFiled: October 1, 2018Publication date: April 4, 2019Applicant: Yazaki CorporationInventors: You YANAGIDA, Ryoma TOYODA