Patents by Inventor Yasuhiro Yamasaki

Yasuhiro Yamasaki 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: 20240195598
    Abstract: The vehicle control system includes an abnormality diagnosis unit for determining whether a synchronization abnormality between a master ECU and a slave ECU has occurred. The abnormality diagnosis unit transmits and receives a signal between the master ECU and the slave ECU and acquires time information. The slave ECU calculates a delay time of transmission based on the acquired time information. Then, the abnormality diagnosis unit first determines whether or not there is a periodic shift. When determining that there is no periodic deviation, the abnormality diagnosis unit determines whether or not there is an offset deviation based on the difference obtained by subtracting the delay time from the second time and the first time. The abnormality diagnosis unit determines that a synchronization abnormality has occurred when it is determined that there is a periodic deviation or when it is determined that there is the offset deviation.
    Type: Application
    Filed: September 27, 2023
    Publication date: June 13, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi OTA, Yasuhiro Yamasaki, Kenichiro Hayashi
  • Publication number: 20240179215
    Abstract: An in-vehicle control device is installed in a vehicle and comprises a control unit performing control related to communication between a first in-vehicle device and a second in-vehicle device via an in-vehicle network. The control unit generates setting information of the in-vehicle network according to a state of the vehicle, derives a required time period required to change a network setting according to the setting information in the first in-vehicle device, derives a required time period required to change a network setting according to the setting information in the second in-vehicle device, and performs a setting change instruction on at least one of the network setting in the first in-vehicle device and the network setting in the second in-vehicle device so that the derived two required time periods at least partially overlap with each other.
    Type: Application
    Filed: June 23, 2022
    Publication date: May 30, 2024
    Applicants: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Darmawan GO, Hirofumi URAYAMA, Tatsuya IZUMI, Hideyuki TANAKA, Yusuke YAMAMOTO, Kenta OGATA, Hideki GOTO, Yasuhiro YAMASAKI, Takashi YASUDA
  • Publication number: 20240147289
    Abstract: A method of controlling an SDN system, an SDN sub-controller, and an SDN system is provided. The SDN controller sends a keepalive notification to the SDN switch and the SDN sub-controller. The SDN switch sends a switching request to the SDN sub-controller on condition that the keepalive notification cannot be received during a predetermined specific period. The SDN sub-controller starts to control a communication setting of the SDN switch on condition that the keepalive notification cannot be received during the specific period and that the switching request has been received.
    Type: Application
    Filed: October 18, 2023
    Publication date: May 2, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro YAMASAKI, Hideki GOTO, Ikuyoshi OTAKE
  • Publication number: 20230291647
    Abstract: A communication control device includes a memory and a processor connected to the memory. The processor is configured to perform processing related to changing a network setting, on a communication device that is connected to the network and that is a setting change target, and perform processing to return the network setting to a prior state, on the communication device that is the setting change target, in a case in which a communication abnormality notification is received from a communication device that is connected to the network and that is not a setting change target.
    Type: Application
    Filed: February 21, 2023
    Publication date: September 14, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro YAMASAKI, Kunihiro MIYAUCHI, Hideki GOTO, Ikuyoshi OTAKE
  • Publication number: 20230291650
    Abstract: A communication control system includes a memory and a processor coupled to the memory. The processor is configured to according to an instruction from an external device, perform processing related to changing a network setting on a communication device, after the processing has been executed, determine whether or not communication of the communication device matches a specific communication condition, and notify an error to the external device in a case in which determination has been made that the communication of the communication device does not match the specific communication condition.
    Type: Application
    Filed: March 6, 2023
    Publication date: September 14, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro YAMASAKI, Kunihiro MIYAUCHI, Hideki GOTO, Ikuyoshi OTAKE
  • Patent number: 11388097
    Abstract: A setting device to set a parameter for transmission queues at an Ethernet switch, the setting device including a processor. The processor is configured to assign associations between an attribute associated with a transmission frame and a plurality of the queues having different priorities, set a parameter for a high priority queue having a priority equal to or higher than a threshold based on an adverse condition transmission schedule having transmission timings less desirable than those of a preset transmission schedule, and set a parameter for a low priority queue having a priority of less than the threshold using processing that is different from processing for setting the parameter for the high priority queue.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: July 12, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro Yamasaki, Daisuke Takata, Keigo Kawahara
  • Patent number: 11374787
    Abstract: 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: Grant
    Filed: August 1, 2019
    Date of Patent: June 28, 2022
    Assignees: Sumitomo Electric Industries, Ltd., AutoNetwork Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Akihito Iwata, Hideyuki Tanaka, Hideki Maeda, Tatsuya Izumi, Takeshi Hagihara, Yasuhiro Yabuuchi, Yasuhiro Yamasaki, Hiroya Ando, Toshio Kawamura, Hirofumi Urayama
  • Patent number: 11228635
    Abstract: Provided are a communication terminal, communication system, information sharing method and information sharing program, which are capable of reducing the control load when detecting duplicate held content among a plurality of communication terminals. A communication terminal comprises: a communication unit which communicates with another terminal; a content retention unit which retains content; a content list transmission and receiving unit which transmits and receives a content list relating to the retained content; and a transmission timing determination unit which determines the timing at which to transmit the content list on the basis of the number of held content items.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: January 18, 2022
    Assignee: NEC CORPORATION
    Inventors: Kazumine Ogura, Yasuhiro Yamasaki
  • Patent number: 11201685
    Abstract: An in-vehicle network system includes first device and second device configured to send or receive to or from each other, and an intermediate node connected between the first device and the second device, the intermediate node being configured to output buffered messages in a sequence determined by a relative priority scheme. The first device includes a control unit configured to measure a communication delay for each of a plurality of different priority messages, set a delay representative value less than a maximum value of the plurality of communication delays, and adjust time that a time management unit manages, based on time that the first device manages, time that the second device manages, and the delay representative value.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: December 14, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yasuhiro Yamasaki
  • Patent number: 11201803
    Abstract: An object of the present invention is to avoid the situation where data to be transmitted have to be discarded, even when a network to which the data is to be transmitted is unavailable. The electronic control unit has: a determination part that executes a first determination process for determining whether a network to which data is to be transmitted is available or not; and a transmission part that executes a first transmission process for transmitting the data to the network when it is determined that the network is available, and executes a storage process for storing the data in a storage medium when it is determined that the network is unavailable. The electronic control unit executes the same processes for another network as well.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: December 14, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro Yamasaki, Toshio Kawamura, Nobuyuki Nakagawa, Yoshitaka Kaseda
  • Publication number: 20210367893
    Abstract: A setting device to set a parameter for transmission queues at an Ethernet switch, the setting device including a processor. The processor is configured to assign associations between an attribute associated with a transmission frame and a plurality of the queues having different priorities, set a parameter for a high priority queue having a priority equal to or higher than a threshold based on an adverse condition transmission schedule having transmission timings less desirable than those of a preset transmission schedule, and set a parameter for a low priority queue having a priority of less than the threshold using processing that is different from processing for setting the parameter for the high priority queue.
    Type: Application
    Filed: April 5, 2021
    Publication date: November 25, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro YAMASAKI, Daisuke TAKATA, Keigo KAWAHARA
  • Publication number: 20210344522
    Abstract: 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: Application
    Filed: August 1, 2019
    Publication date: November 4, 2021
    Applicants: Sumitomo Electric Industries, Ltd., AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Akihito IWATA, Hideyuki TANAKA, Hideki MAEDA, Tatsuya IZUMI, Takeshi HAGIHARA, Yasuhiro YABUUCHI, Yasuhiro YAMASAKI, Hiroya ANDO, Toshio KAWAMURA, Hirofumo URAYAMA
  • Patent number: 11095542
    Abstract: An electronic control unit that monitors a subject electronic control unit that is different from the electronic control unit and is connected to a network includes a transmitting unit that transmits a monitoring packet to the subject electronic control unit, an estimating unit that estimates a state of the subject electronic control unit, based on a reply packet transmitted from the subject electronic control unit in response to the monitoring packet, and a monitoring unit that monitors the subject electronic control unit, based on a monitoring policy selected according to a combination of the state of the subject electronic control unit estimated by the estimating unit, and the state of the electronic control unit.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: August 17, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shu Ishizuka, Yasuhiro Yamasaki, Toshio Kawamura, Masashi Amesara
  • Patent number: 11063908
    Abstract: This on-vehicle communication device includes: a storage unit configured to store correspondence information indicating a correspondence relationship between an address and a port number; and a communication unit configured to perform, by using the correspondence information, filtering of a packet having been received. A target port number which is a port number of a target instrument is registered in advance in the correspondence information. In the filtering, the communication unit selectively allows a packet that includes the target port number, to pass. The communication unit performs an address registration process of acquiring an address from the packet that includes the target port number and registering, into the correspondence information, the acquired address in association with the target port number. In the filtering after the address registration process, the communication unit selectively allows a packet that includes the target port number and the corresponding address, to pass.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: July 13, 2021
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Darmawan Go, Hideki Maeda, Takeshi Hagihara, Yasuhiro Yabuuchi, Yasuhiro Yamasaki, Hiroya Ando, Toshio Kawamura, Hirofumi Urayama
  • Patent number: 11038802
    Abstract: An in-vehicle apparatus includes a processor configured to obtain first transmission data with a first communication address as a destination and second transmission data with a second communication address as a destination from one or more applications, transmit the first transmission data to a relay unit at a first timing among a plurality of timings set at an interval of a predetermined cycle corresponding to a buffer size of the relay unit to which the in-vehicle apparatus is connected, and transmit the second transmission data to the relay unit at a second timing among the plurality of timings, the second timing being different from the first timing.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: June 15, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro Yamasaki, Toshio Kawamura
  • Publication number: 20200389436
    Abstract: This on-vehicle communication device includes: a storage unit configured to store correspondence information indicating a correspondence relationship between an address and a port number; and a communication unit configured to perform, by using the correspondence information, filtering of a packet having been received. A target port number which is a port number of a target instrument is registered in advance in the correspondence information. In the filtering, the communication unit selectively allows a packet that includes the target port number, to pass. The communication unit performs an address registration process of acquiring an address from the packet that includes the target port number and registering, into the correspondence information, the acquired address in association with the target port number. In the filtering after the address registration process, the communication unit selectively allows a packet that includes the target port number and the corresponding address, to pass.
    Type: Application
    Filed: August 30, 2019
    Publication date: December 10, 2020
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Darmawan GO, Hideki MAEDA, Takeshi HAGIHARA, Yasuhiro YABUUCHI, Yasuhiro YAMASAKI, Hiroya ANDO, Toshio KAWAMURA, Hirofumi URAYAMA
  • Patent number: 10839619
    Abstract: An electronic control unit mounted on a vehicle includes a processor configured to: detect a connection request from an outside device; determine, in response to the connection request, whether or not a start condition for starting a connection authentication process is satisfied, the connection authentication process being a process for determining propriety of the connection request from the outside device; control a communication state between the outside device and the electronic control unit such that the communication state becomes a linkup state when the start condition is satisfied; and start the connection authentication process when the communication state is the linkup state.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: November 17, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shu Ishizuka, Masashi Amesara, Toshio Kawamura, Yasuhiro Yamasaki
  • Publication number: 20200304558
    Abstract: Provided are a communication terminal, communication system, information sharing method and information sharing program, which are capable of reducing the control load when detecting duplicate held content among a plurality of communication terminals. A communication terminal comprises: a communication unit which communicates with another terminal; a content retention unit which retains content; a content list transmission and receiving unit which transmits and receives a content list relating to the retained content; and a transmission timing determination unit which determines the timing at which to transmit the content list on the basis of the number of held content items.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 24, 2020
    Applicant: NEC CORPORATION
    Inventors: Kazumine OGURA, Yasuhiro YAMASAKI
  • Publication number: 20200259579
    Abstract: An in-vehicle network system includes first device and second device configured to send or receive to or from each other, and an intermediate node connected between the first device and the second device, the intermediate node being configured to output buffered messages in a sequence determined by a relative priority scheme. The first device includes a control unit configured to measure a communication delay for each of a plurality of different priority messages, set a delay representative value less than a maximum value of the plurality of communication delays, and adjust time that a time management unit manages, based on time that the first device manages, time that the second device manages, and the delay representative value.
    Type: Application
    Filed: January 29, 2020
    Publication date: August 13, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yasuhiro YAMASAKI
  • Patent number: 10601601
    Abstract: An information processing system includes: a first information processing device including a transmission unit, the transmission unit being configured to transmit a dummy segment including dummy data, after sequentially transmitting transmission segments into which transmission data is divided; and a second information processing device configured to communicate with the first information processing device using a transmission control protocol, the second information processing device including a removal unit configured to remove the dummy segment and to set data including the transmission segments as the transmission data when the transmission segments and the dummy segment are received.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: March 24, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yasuhiro Yamasaki, Toshio Kawamura