Patents by Inventor Akihito Iwata
Akihito Iwata 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: 11962433Abstract: A switch device includes a plurality of communication ports; a switch unit configured to relay a frame, which has been transmitted from a function unit and to which information including an ID of a VLAN is added, to another function unit via a communication port; and a duplication unit configured to, when the diagnosis device is connected to another switch device, duplicate the frame to be relayed via a designated communication port among the plurality of communication ports, and generate a duplicate frame for diagnosis that is a frame obtained by adding, to a duplicate frame obtained through the duplication, specific information indicating that the duplicate frame for diagnosis should be transmitted to the diagnosis device. The switch unit outputs the duplicate frame for diagnosis generated by the duplication unit from a communication port corresponding to the other switch device.Type: GrantFiled: February 2, 2021Date of Patent: April 16, 2024Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akihito Iwata, Tatsuya Izumi, Hirofumi Urayama, Tadashi Matsumoto, Darmawan Go, Hideki Maeda, Takeshi Hagihara, Masashi Amesara, Hisashi Furukawa, Shu Ishizuka, Hideki Goto
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Patent number: 11951917Abstract: An in-vehicle communication system includes a first switching device and a second switching device each configured to relay, via a transmission path, information between a plurality of function units mounted to a vehicle. Upon being supplied with a power source voltage via a power-source-dedicated line from a power source device mounted to the vehicle, the first switching device supplies a power source voltage via the transmission path to one or a plurality of the function units and the second switching device that are connected to the first switching device, and the second switching device extracts a power source voltage from the transmission path, and supplies a power source voltage via the transmission path to one or a plurality of the function units that are connected to the second switching device.Type: GrantFiled: May 7, 2020Date of Patent: April 9, 2024Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD.Inventors: Akihito Iwata, Takeshi Hagihara, Darmawan Go, Yosuke Shimizu
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Publication number: 20240031123Abstract: An in-vehicle device includes: a processing unit configured to perform time synchronization between own device, which is the in-vehicle device, and another device, which is another in-vehicle device, based on a data propagation delay time between the other device and the own device, and detect occurrence of an update event regarding the propagation delay time, wherein in a case where the processing unit detects occurrence of the update event, the processing unit requests time information used for updating the propagation delay time from the other device.Type: ApplicationFiled: July 30, 2021Publication date: January 25, 2024Inventors: Kazuki KITAGAWA, Tadashi MATSUMOTO, Yojiro SUYAMA, Akihito IWATA, Ryo YAMANE
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Publication number: 20230308256Abstract: Time synchronization is performed between the vehicle-mounted device and another device that is another vehicle-mounted device based on a data propagation delay time between the vehicle-mounted device and the other device. The vehicle-mounted device includes: a processing unit configured to receive, from the other device, request information that requests time information used for updating the propagation delay time, and transmit the time information to the other device; and a detection unit configured to detect an abnormality related to time synchronization, and acquire information regarding the detected abnormality.Type: ApplicationFiled: July 30, 2021Publication date: September 28, 2023Inventors: Kazuki KITAGAWA, Kentaro ASHIBE, Yosuke SHIMIZU, Ryo YAMANE, Akihito IWATA, Yojiro SUYAMA, Hirofumi URAYAMA, Hideki GOTO, Masashi AMESARA, Hisashi FURUKAWA, Shu ISHIZUKA
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Patent number: 11683268Abstract: A switch device for relaying data in an on-vehicle network, being equipped with a switch section and a processing section for performing the relay processing via the switch section, wherein, in the case that a plurality of frames to be subjected to the relay processing is present in the processing section, the processing section performs adjustment processing so that the output rates of the respective frames to the switch section in the case that the transmission source addresses of the respective frames are different are made smaller than the output rate in the case that the transmission source addresses of the respective frames are the same.Type: GrantFiled: March 27, 2018Date of Patent: June 20, 2023Assignees: Sumitomo Electrical industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.Inventors: Akihito Iwata, Takeshi Hagihara, Yasuhiro Yabuuchi
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Publication number: 20230141041Abstract: A switch device includes a plurality of communication ports; a switch unit configured to relay a frame, which has been transmitted from a function unit and to which information including an ID of a VLAN is added, to another function unit via a communication port; and a duplication unit configured to, when the diagnosis device is connected to another switch device, duplicate the frame to be relayed via a designated communication port among the plurality of communication ports, and generate a duplicate frame for diagnosis that is a frame obtained by adding, to a duplicate frame obtained through the duplication, specific information indicating that the duplicate frame for diagnosis should be transmitted to the diagnosis device. The switch unit outputs the duplicate frame for diagnosis generated by the duplication unit from a communication port corresponding to the other switch device.Type: ApplicationFiled: February 2, 2021Publication date: May 11, 2023Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd., Autonetworks Technologies, Ltd., Toyota Jidosha Kabushiki Kaisha,Inventors: Akihito IWATA, Tatsuya IZUMI, Hirofumi URAYAMA, Tadashi MATSUMOTO, Darmawan GO, Hideki MAEDA, Takeshi HAGIHARA, Masashi AMESARA, Hisashi FURUKAWA, Shu ISHIZUKA, Hideki GOTO
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Publication number: 20230142079Abstract: A switch device includes: a plurality of communication ports; a switch unit configured to relay a frame, which has been transmitted from a function unit and to which information including an ID of a VLAN and priority information is added, to another function unit via a communication port, according to the priority information; and a duplication unit configured to, when the diagnosis device is connected to another switch device, duplicate the frame to be relayed via a designated communication port, thereby generating a duplicate frame for diagnosis. The duplication unit is able to set the priority information to be added to the duplicate frame for diagnosis, separately from the priority information to be added to the frame as an original. The switch unit outputs the duplicate frame for diagnosis, from a communication port corresponding to the other switch device, according to the priority information set by the duplication unit.Type: ApplicationFiled: February 2, 2021Publication date: May 11, 2023Applicants: Sumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd., Autonetworks Technologies, Ltd., Toyota Jidosha Kabushiki Kaisha,Inventors: Akihito IWATA, Tatsuya IZUMI, Hirofumi URAYAMA, Tadashi MATSUMOTO, Hideki MAEDA, Darmawan GO, Takeshi HAGIHARA, Masashi AMESARA, Hisashi FURUKAWA, Shu ISHIZUKA, Hideki GOTO
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Patent number: 11516294Abstract: A switch device includes: a switch unit configured to relay an Ethernet frame between a plurality of function units installed in a vehicle; a monitoring unit configured to monitor predetermined data in the Ethernet frame; and a specification unit configured to specify a protocol being used by a target function unit which is a function unit serving as a transmission source of the Ethernet frame, based on a monitoring result of the monitoring unit. The monitoring unit performs an operation monitoring process of selectively monitoring an operation of the target function unit according to the target protocol that is the protocol specified by the specification unit.Type: GrantFiled: November 30, 2018Date of Patent: November 29, 2022Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Akihito Iwata, Takeshi Hagihara, Yasuhiro Yabuuchi
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Publication number: 20220374372Abstract: An in-vehicle communication device for transmitting and receiving a signal by a predetermined communication protocol related to Ethernet® (registered trademark), the in-vehicle communication device comprising: a control circuit configured to generate transmission data including interrupt data inserted into an inter-frame gap between Ethernet frames; and a PHY unit having a communication circuit configured to convert the transmission data generated by the control circuit into a signal and transmit the signal.Type: ApplicationFiled: August 13, 2020Publication date: November 24, 2022Inventors: Yuanjun XIAN, Takeshi HAGIHARA, Makoto MASHITA, Nobuyuki KOBAYASHI, Takehiro KAWAUCHI, Tatsuya IZUMI, Akihito IWATA, Yusuke YAMAMOTO
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Patent number: 11502873Abstract: This switch device includes: a relay unit configured to perform a first relay process of relaying data between function units installed in a vehicle and belonging to different VLANs; a calculation unit configured to calculate time correction information on the basis of a transmission time of data from a first function unit serving as the function unit to the switch device, a reception time in the switch device of the data transmitted from the first function unit, a transmission time of data from a second function unit serving as the function unit to the switch device, and a reception time in the switch device of the data transmitted from the second function unit; and a notification unit configured to notify the second function unit of the time correction information calculated by the calculation unit.Type: GrantFiled: November 22, 2018Date of Patent: November 15, 2022Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Akihito Iwata, Takeshi Hagihara, Yasuhiro Yabuuchi
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Publication number: 20220345357Abstract: An in-vehicle communication system includes a plurality of in-vehicle devices each being connected to an Ethernet network and a CAN (Controller Area Network). Each of the plurality of in-vehicle devices transmits and receives information to and from another in-vehicle device via the Ethernet network and the CAN. At least one of the plurality of in-vehicle devices is able to transmit the same information to the Ethernet network and the CAN in parallel.Type: ApplicationFiled: May 7, 2020Publication date: October 27, 2022Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD.Inventors: Akihito IWATA, Takeshi HAGIHARA, Darmawan GO, Yosuke SHIMIZU
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Publication number: 20220242338Abstract: An in-vehicle communication system includes a first switching device and a second switching device each configured to relay, via a transmission path, information between a plurality of function units mounted to a vehicle. Upon being supplied with a power source voltage via a power-source-dedicated line from a power source device mounted to the vehicle, the first switching device supplies a power source voltage via the transmission path to one or a plurality of the function units and the second switching device that are connected to the first switching device, and the second switching device extracts a power source voltage from the transmission path, and supplies a power source voltage via the transmission path to one or a plurality of the function units that are connected to the second switching device.Type: ApplicationFiled: May 7, 2020Publication date: August 4, 2022Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD.Inventors: Akihito IWATA, Takeshi HAGIHARA, Darmawan GO, Yosuke SHIMIZU
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Patent number: 11374787Abstract: A switch device installed in a vehicle is provided with: a switch unit configured to relay communication data between a plurality of function units installed in the vehicle; a storage unit configured to hold the communication data to be relayed; and a control unit configured to determine a state of the storage unit, and adjust, for each of applications, a throughput of the communication data to be transmitted from the function units, based on a result of the determination.Type: GrantFiled: August 1, 2019Date of Patent: June 28, 2022Assignees: Sumitomo Electric Industries, Ltd., AutoNetwork Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Akihito Iwata, Hideyuki Tanaka, Hideki Maeda, Tatsuya Izumi, Takeshi Hagihara, Yasuhiro Yabuuchi, Yasuhiro Yamasaki, Hiroya Ando, Toshio Kawamura, Hirofumi Urayama
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Patent number: 11343347Abstract: In a relay device, a control unit stores, in a temporary storage unit data which is received by an Ethernet communication unit through a communication line. When the data stored in the temporary storage unit is transmitted, the control unit deletes the transmitted data from the temporary storage unit. When the control unit determines that, for the data received by the Ethernet communication unit, the amount of data stored in the temporary storage unit is equal to or greater than a threshold value, the Ethernet communication unit transmits instruction data giving an instruction to stop transmission through a communication line and to perform transmission through a communication bus.Type: GrantFiled: August 21, 2019Date of Patent: May 24, 2022Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Yuanjun Xian, Makoto Mashita, Takeshi Hagihara, Ichiro Kanda, Akihito Iwata, Takehiro Kawauchi
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Patent number: 11342960Abstract: In a relay device, a communication unit receives a data frame transmitted cyclically through a communication line. A control unit stores, in a temporary storage unit, the data frame received by the communication unit. When the data frame stored in the temporary storage unit is transmitted, the control unit deletes the transmitted data frame from the temporary storage unit. When the control unit determines that, for the data frame received through the communication line, the amount of data relevant to the data frames stored in the temporary storage unit is equal to or greater than a threshold value, the communication unit transmits, through the communication line, a cycle change frame which gives an instruction to change a transmission cycle for transmitting the data frame to a longer cycle.Type: GrantFiled: August 21, 2019Date of Patent: May 24, 2022Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Yuanjun Xian, Makoto Mashita, Takeshi Hagihara, Akihito Iwata, Takehiro Kawauchi, Ichiro Kanda
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Patent number: 11260808Abstract: This on-vehicle communication apparatus is configured to communicate with another on-vehicle communication apparatus by using one differential signal line, and includes: a high-band communication unit configured to generate a high-band signal including communication information and output the high-band signal to the differential signal line; and a low-band communication unit configured to generate a direct-current signal or a low-band signal and to output the direct-current signal or the low-band signal to the differential signal line.Type: GrantFiled: January 24, 2018Date of Patent: March 1, 2022Assignees: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems Ltd.Inventors: Takehiro Kawauchi, Akihito Iwata, Hirofumi Urayama, Takeshi Hagihara, Yasuhiro Yabuuchi
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Publication number: 20210344522Abstract: A switch device installed in a vehicle is provided with: a switch unit configured to relay communication data between a plurality of function units installed in the vehicle; a storage unit configured to hold the communication data to be relayed; and a control unit configured to determine a state of the storage unit, and adjust, for each of applications, a throughput of the communication data to be transmitted from the function units, based on a result of the determination.Type: ApplicationFiled: August 1, 2019Publication date: November 4, 2021Applicants: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Toyota Jidosha Kabushiki KaishaInventors: Akihito IWATA, Hideyuki TANAKA, Hideki MAEDA, Tatsuya IZUMI, Takeshi HAGIHARA, Yasuhiro YABUUCHI, Yasuhiro YAMASAKI, Hiroya ANDO, Toshio KAWAMURA, Hirofumo URAYAMA
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Publication number: 20210344773Abstract: In a relay device, a control unit stores, in a temporary storage unit data which is received by an Ethernet communication unit through a communication line. When the data stored in the temporary storage unit is transmitted, the control unit deletes the transmitted data from the temporary storage unit. When the control unit determines that, for the data received by the Ethernet communication unit, the amount of data stored in the temporary storage unit is equal to or greater than a threshold value, the Ethernet communication unit transmits instruction data giving an instruction to stop transmission through a communication line and to perform transmission through a communication bus.Type: ApplicationFiled: August 21, 2019Publication date: November 4, 2021Inventors: Yuanjun Xian, Makoto Mashita, Takeshi Hagihara, Ichiro Kanda, Akihito Iwata, Takehiro Kawauchi
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Publication number: 20210328624Abstract: In a relay device, a communication unit receives a data frame transmitted cyclically through a communication line. A control unit stores, in a temporary storage unit, the data frame received by the communication unit. When the data frame stored in the temporary storage unit is transmitted, the control unit deletes the transmitted data frame from the temporary storage unit. When the control unit determines that, for the data frame received through the communication line, the amount of data relevant to the data frames stored in the temporary storage unit is equal to or greater than a threshold value, the communication unit transmits, through the communication line, a cycle change frame which gives an instruction to change a transmission cycle for transmitting the data frame to a longer cycle.Type: ApplicationFiled: August 21, 2019Publication date: October 21, 2021Inventors: Yuanjun Xian, Makoto Mashita, Takeshi Hagihara, Akihito Iwata, Takehiro Kawauchi, Ichiro Kanda
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Publication number: 20210328931Abstract: In a relay device, a control unit detects simultaneous transmission of a plurality of data through a first communication bus. When the number of times of detection of the simultaneous transmission within a predetermined time by the control unit is less than the predetermined number of times, a CAN communication unit starts transmission of data through the first communication bus. When the number of times of detection of the simultaneous transmission within the predetermined time by the control unit is equal to or greater than the predetermined number of times, an Ethernet communication unit transmits data through a first communication line.Type: ApplicationFiled: August 21, 2019Publication date: October 21, 2021Inventors: Yuanjun Xian, Takeshi Hagihara, Makoto Mashita, Yasuhiro Yabuuchi, Tadashi Matsumoto, Ichiro Kanda, Akihito Iwata, Takehiro Kawauchi