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).

  • Publication number: 20210328624
    Abstract: 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: Application
    Filed: August 21, 2019
    Publication date: October 21, 2021
    Inventors: Yuanjun Xian, Makoto Mashita, Takeshi Hagihara, Akihito Iwata, Takehiro Kawauchi, Ichiro Kanda
  • Publication number: 20210328931
    Abstract: 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: Application
    Filed: August 21, 2019
    Publication date: October 21, 2021
    Inventors: Yuanjun Xian, Takeshi Hagihara, Makoto Mashita, Yasuhiro Yabuuchi, Tadashi Matsumoto, Ichiro Kanda, Akihito Iwata, Takehiro Kawauchi
  • Patent number: 11152973
    Abstract: In a communication apparatus, an analog circuit executes an analog process to a differential signal in a condition that a potential of a first conductor is a reference. A communication circuit receives, via a connection circuit, a differential signal obtained by the execution of the analog process of the analog process is executed and generates, based on the received differential signal, a signal with a reference corresponding to a potential of a second conductor. An inductor (a connection element) is connected between the first conductor and the second conductor. The connection circuit includes a circuit element other than a capacitor.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: October 19, 2021
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Makoto Mashita, Takeshi Hagihara, Yuanjun Xian, Nobuyuki Kobayashi, Akihito Iwata, Takehiro Kawauchi, Tatsuya Izumi
  • Patent number: 11134024
    Abstract: A communication control device used in an on-vehicle communication system including an out-of-vehicle communication device being one of a plurality of function units provided in a vehicle and being capable of communicating with an external device outside the vehicle, and a switching device being capable of relaying communication data from one of the function units to another one of the function units, comprises: an acquisition unit that acquires status information indicating a status of a queue for storing in the switching device at least communication data from the out-of-vehicle communication device; and a control unit that determines restriction of transmission of communication data from the external device to the out-of-vehicle communication device based on the status information acquired by the acquisition unit.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: September 28, 2021
    Assignees: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Akihiro Ogawa, Akihito Iwata, Hirofumi Urayama, Takeshi Hagihara, Yasuhiro Yabuuchi
  • Patent number: 11075856
    Abstract: This switch device is mounted on a vehicle, and comprises: a switch unit for relaying communication data communicated between a plurality of communication devices; a buffer for holding the communication data to be relayed; and a control unit for transmitting stop request to at least one communication device of the plurality of communication devices if communication data to be transmitted to a communication device in which abnormality has been detected is held in the buffer, the stop request which requests for stopping transmission of communication data to the switch device and for holding of communication data to be transmitted to the switch device.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: July 27, 2021
    Assignees: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Yuya Tanaka, Akihito Iwata, Takeshi Hagihara, Yasuhiro Yabuuchi
  • Publication number: 20210105324
    Abstract: 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: Application
    Filed: November 30, 2018
    Publication date: April 8, 2021
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Akihito IWATA, Takeshi HAGIHARA, Yasuhiro YABUUCHI
  • Patent number: 10965493
    Abstract: An on-vehicle communication system is an on-vehicle communication system mounted on a vehicle, comprises: a plurality of on-vehicle devices including a first on-vehicle device and a second on-vehicle device; an acquisition unit that acquires error information concerning an error of data received by the first on-vehicle device from the second on-vehicle device; and a determination unit that performs determination processing of determining whether or not a communication route from the second on-vehicle device to the first on-vehicle device is to be switched to another communication route from the second on-vehicle device to the first on-vehicle device by way of another on-vehicle device based on the error information acquired by the acquisition unit.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 30, 2021
    Assignees: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Akihito Iwata, Takeshi Hagihara, Yasuhiro Yabuuchi
  • Patent number: 10938596
    Abstract: A switch device being equipped with an acquisition section for acquiring environmental information indicating the surrounding environment of a vehicle provided with a plurality of function sections; a switching section for performing relay processing for relaying communication data from at least one of the function sections to at least one of the other function sections; and a setting section for setting the priority level of the communication data in the relay processing on the basis of the environmental information acquired by the acquisition section.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: March 2, 2021
    Assignees: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Akihiro Ogawa, Akihito Iwata, Hirofumi Urayama, Takeshi Hagihara, Yashuhiro Yabuuchi
  • Patent number: 10892913
    Abstract: A gateway that is mounted on a vehicle, includes: a communication unit that can communicate with an external device through other gateway capable of communicating with the external device outside the vehicle, wherein said other gateway includes a switch unit that executes relay processing of relaying communication data and a processing unit that controls the relay processing of the switch unit, wherein said communication unit can relay communication data received from said switch unit to a device inside said vehicle, said gateway further including: a control unit that determines abnormality in said other gateway and if it is determined that said abnormality occurs, controls relay processing of said other gateway.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: January 12, 2021
    Assignees: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Akihito Iwata, Hirofumi Urayama, Akihiro Ogawa, Takeshi Hagihara, Yasuhiro Yabuuchi
  • Publication number: 20210006435
    Abstract: 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: Application
    Filed: November 22, 2018
    Publication date: January 7, 2021
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Akihito IWATA, Takeshi HAGIHARA, Yasuhiro YABUUCHI
  • Publication number: 20200410785
    Abstract: This on-vehicle communication system is an on-vehicle communication system including one or a plurality of switch devices each configured to relay data between a plurality of function units mounted to a vehicle. The on-vehicle communication system includes: a detection unit configured to detect an abnormality regarding a function unit; and a change unit configured to, when an abnormality has been detected by the detection unit, perform a protocol change process of causing the function unit for which the abnormality has been detected, to change a protocol that is used.
    Type: Application
    Filed: January 31, 2019
    Publication date: December 31, 2020
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD.
    Inventors: Takehiro KAWAUCHI, Akihito IWATA, Takeshi HAGIHARA, Yasuhiro YABUUCHI, Yuanjun XIAN, Makoto MASHITA
  • Patent number: 10826720
    Abstract: A switching device is a switching device mounted on a vehicle and includes a plurality of communication ports connectable to cables for Ethernet communication, a circuit operated by using power supplied via each of the communication ports, an acquisition unit that acquires a measurement result for noise of the power supplied via each of the communication ports, and a determination unit that performs determination processing for determining whether or not power to be supplied via a corresponding one of the communication ports is to be output to the circuit based on the measurement result for noise acquired by the acquisition unit.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: November 3, 2020
    Assignees: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Akihito Iwata, Hirofumi Urayama, Akihiro Ogawa, Takeshi Hagihara, Yasuhiro Yabuuchi
  • Patent number: 10812290
    Abstract: An on-vehicle communication system mounted on a vehicle comprises a first switching device, a second switching device and a third switching device each including a first communication port and a second communication port. The first communication port and the second communication port of the first switching device are respectively connected to the first communication port of the second switching device and the first communication port of the third switching device, and the second communication port of the second switching device and the second communication port of the third switching device are connected to each other. Each of the first switching device, the second switching device and the third switching device measures a reception signal quality for the first communication port of the device itself and a reception signal quality for the second communication port of the device itself.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: October 20, 2020
    Assignees: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Akihito Iwata, Hirofumi Urayama, Akihiro Ogawa, Takeshi Hagihara, Yasuhiro Yabuuchi
  • Publication number: 20200313724
    Abstract: In a communication apparatus, an analog circuit executes an analog process to a differential signal in a condition that a potential of a first conductor is a reference. A communication circuit receives, via a connection circuit, a differential signal obtained by the execution of the analog process of the analog process is executed and generates, based on the received differential signal, a signal with a reference corresponding to a potential of a second conductor. An inductor (a connection element) is connected between the first conductor and the second conductor. The connection circuit includes a circuit element other than a capacitor.
    Type: Application
    Filed: February 14, 2020
    Publication date: October 1, 2020
    Inventors: Makoto Mashita, Takeshi Hagihara, Yuanjun Xian, Nobuyuki Kobayashi, Akihito Iwata, Takehiro Kawauchi, Tatsuya Izumi
  • Publication number: 20200195619
    Abstract: The on-vehicle communication device is an on-vehicle communication device to be mounted on a vehicle and is provided with: a storage unit configured to store a first encryption time that is a time required for encryption of data in another on-vehicle communication device, and a first decryption time that is a time required for decryption of data in the on-vehicle communication device itself; and a synchronization processing unit configured to perform synchronization processing of carrying out time synchronization of the on-vehicle communication device itself with the another on-vehicle communication device on the basis of the first encryption time and the first decryption time.
    Type: Application
    Filed: February 20, 2018
    Publication date: June 18, 2020
    Applicants: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Akihito IWATA, Takeshi HAGIHARA, Yasuhiro YABUUCHI
  • Publication number: 20200195471
    Abstract: An on-vehicle communication system is an on-vehicle communication system mounted on a vehicle, comprises: a plurality of on-vehicle devices including a first on-vehicle device and a second on-vehicle device; an acquisition unit that acquires error information concerning an error of data received by the first on-vehicle device from the second on-vehicle device; and a determination unit that performs determination processing of determining whether or not a communication route from the second on-vehicle device to the first on-vehicle device is to be switched to another communication route from the second on-vehicle device to the first on-vehicle device by way of another on-vehicle device based on the error information acquired by the acquisition unit.
    Type: Application
    Filed: February 6, 2018
    Publication date: June 18, 2020
    Applicants: Sumitomo Electric Industries, Ltd., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Akihito IWATA, Takeshi HAGIHARA, Yasuhiro YABUUCHI
  • Publication number: 20200172028
    Abstract: 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: Application
    Filed: January 24, 2018
    Publication date: June 4, 2020
    Applicants: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd.
    Inventors: Takehiro KAWAUCHI, Akihito IWATA, Hirofumi URAYAMA, Takeshi HAGIHARA, Yasuhiro YABUUCHI
  • Publication number: 20200106704
    Abstract: 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: Application
    Filed: March 27, 2018
    Publication date: April 2, 2020
    Applicants: Sumitomo Electric Industries, Ltd., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Akihito IWATA, Takeshi HAGIHARA, Yasuhiro YABUUCHI
  • Publication number: 20200059438
    Abstract: A communication control device used in an on-vehicle communication system including an out-of-vehicle communication device being one of a plurality of function units provided in a vehicle and being capable of communicating with an external device outside the vehicle, and a switching device being capable of relaying communication data from one of the function units to another one of the function units, comprises: an acquisition unit that acquires status information indicating a status of a queue for storing in the switching device at least communication data from the out-of-vehicle communication device; and a control unit that determines restriction of transmission of communication data from the external device to the out-of-vehicle communication device based on the status information acquired by the acquisition unit.
    Type: Application
    Filed: August 2, 2017
    Publication date: February 20, 2020
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Akihiro Ogawa, Akihito Iwata, Hirofumi Urayama, Takeshi Hagihara, Yasuhiro Yabuuchi
  • Publication number: 20200036554
    Abstract: A gateway that is mounted on a vehicle, includes: a communication unit that can communicate with an external device through other gateway capable of communicating with the external device outside the vehicle, wherein said other gateway includes a switch unit that executes relay processing of relaying communication data and a processing unit that controls the relay processing of the switch unit, wherein said communication unit can relay communication data received from said switch unit to a device inside said vehicle, said gateway further including: a control unit that determines abnormality in said other gateway and if it is determined that said abnormality occurs, controls relay processing of said other gateway.
    Type: Application
    Filed: June 28, 2017
    Publication date: January 30, 2020
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Akihito IWATA, Hirofumi URAYAMA, Akihiro OGAWA, Takeshi HAGIHARA, Yasuhiro YABUUCHI