Patents by Inventor Seiju Kawamata
Seiju Kawamata 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: 20230256983Abstract: A vehicle controller includes: a vehicle control unit configured to control a vehicle by executing a vehicle starting program for starting the vehicle; a storage unit including a rewrite limited area where the vehicle starting program is stored and rewrite is limited and a rewrite possible area where the vehicle starting program is rewritably stored; a communication unit configured to communicate with an external device; and a program update unit configured to execute update processing of storing a vehicle starting update program received by the communication unit and utilized for updating the vehicle starting program in the rewrite possible area, in which the vehicle control unit executes the vehicle starting program stored in the rewrite possible area and executes the vehicle starting program stored in the rewrite limited area when the update processing by the program update unit is not normally completed.Type: ApplicationFiled: January 20, 2023Publication date: August 17, 2023Inventors: Hisahiro Kato, Hiroaki Hakukawa, Satoshi Aiyoshizawa, Takayuki Inomata, Seiju Kawamata
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Patent number: 11329462Abstract: An engagement structure includes a cover having an opening portion, a block member inserted into the opening portion, an engagement mechanism configured to engage the block member with the opening portion, and an engagement stabilization mechanism configured to stabilize an engagement state of the engagement mechanism. The engagement stabilization mechanism includes a first stabilization mechanism and a second stabilization mechanism. The first stabilization mechanism permits excessive insertion due to backlash that occurs in the engagement mechanism and to restore the excessive insertion after the block member is engaged with the opening portion. The second stabilization mechanism performs a slide engagement between the block member and the opening portion and to restrict a wall inner surface of the cover from moving away from an outer surface of a side portion of the block member after the slide engagement is completed.Type: GrantFiled: October 11, 2019Date of Patent: May 10, 2022Assignees: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Yoshihito Imaizumi, Jun Sato, Seiju Kawamata, Toshibumi Shiohata
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Patent number: 10811870Abstract: An electric wire protection device includes a voltage adjusting unit that adjusts voltage of a power source side and supplies the resulting voltage to a load, and a controller that includes a calculation unit configured to compute temperature information of an electric wire connecting the power source and the load from a value of an electric current flowing through the voltage adjusting unit, and that is configured to make the voltage adjusting unit into a shutoff state of shutting off the power source and the load on the basis of the temperature information.Type: GrantFiled: March 9, 2018Date of Patent: October 20, 2020Assignees: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takashi Kikuchi, Takahiro Miyakawa, Syunsuke Nagakura, Keisuke Ueta, Tomoya Nishino, Noboru Ujigawa, Seiju Kawamata, Masataka Tsukioka, Rikuya Ezoe
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Patent number: 10707675Abstract: An electric-wire protection device includes a voltage adjustment unit that adjusts the voltage to a load, and a controller that includes a temperature calculation unit that calculates temperature information on an electric wire from a value of current, and makes the voltage adjustment unit into a shut-off state based on the temperature information. The temperature information is calculated from an amount of temperature changes based on the current value and a predetermined initial value. The controller shifts into a sleep state when a sleep condition is satisfied that includes a condition that the temperature information is lower than the initial value. The initial value when the controller returns from the sleep state is based on a convergence value of temperature in conducting energization on the electric wire at a maximum value of steady-state current.Type: GrantFiled: March 5, 2018Date of Patent: July 7, 2020Assignees: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takashi Kikuchi, Keisuke Ueta, Syunsuke Nagakura, Takahiro Miyakawa, Tomoya Nishino, Noboru Ujigawa, Seiju Kawamata, Masataka Tsukioka, Rikuya Ezoe
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Patent number: 10707676Abstract: An electric wire protection device includes a voltage adjuster that adjusts voltage on a power source side to be supplied to a load and a controller that includes a temperature calculation part which calculates temperature information of an electric wire based on a current value flowing through the voltage adjuster. The controller sets a first time constant as a time constant used to calculate the temperature information while the voltage adjuster is in the interrupted state, and sets a second time constant as a time constant used to calculate the temperature information while the voltage adjuster supplies power to the load. The first time constant is a value larger than the second time constant and equal to or larger than an actual time constant of the electric wire, and the second time constant is a value smaller than the actual time constant of the electric wire.Type: GrantFiled: March 5, 2018Date of Patent: July 7, 2020Assignees: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takashi Kikuchi, Keisuke Ueta, Syunsuke Nagakura, Takahiro Miyakawa, Tomoya Nishino, Noboru Ujigawa, Seiju Kawamata, Masataka Tsukioka, Rikuya Ezoe
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Publication number: 20200119532Abstract: An engagement structure includes a cover having an opening portion, a block member inserted into the opening portion, an engagement mechanism configured to engage the block member with the opening portion, and an engagement stabilization mechanism configured to stabilize an engagement state of the engagement mechanism. The engagement stabilization mechanism includes a first stabilization mechanism and a second stabilization mechanism. The first stabilization mechanism permits excessive insertion due to backlash that occurs in the engagement mechanism and to restore the excessive insertion after the block member is engaged with the opening portion. The second stabilization mechanism performs a slide engagement between the block member and the opening portion and to restrict a wall inner surface of the cover from moving away from an outer surface of a side portion of the block member after the slide engagement is completed.Type: ApplicationFiled: October 11, 2019Publication date: April 16, 2020Inventors: Yoshihito Imaizumi, Jun Sato, Seiju Kawamata, Toshibumi Shiohata
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Publication number: 20180262001Abstract: An electric wire protection device includes a voltage adjusting unit that adjusts voltage of a power source side and supplies the resulting voltage to a load, and a controller that includes a calculation unit configured to compute temperature information of an electric wire connecting the power source and the load from a value of an electric current flowing through the voltage adjusting unit, and that is configured to make the voltage adjusting unit into a shutoff state of shutting off the power source and the load on the basis of the temperature information.Type: ApplicationFiled: March 9, 2018Publication date: September 13, 2018Applicants: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takashi KIKUCHI, Takahiro MIYAKAWA, Syunsuke NAGAKURA, Keisuke UETA, Tomoya NISHINO, Noboru UJIGAWA, Seiju KAWAMATA, Masataka TSUKIOKA, Rikuya EZOE
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Publication number: 20180261998Abstract: An electric wire protection device includes a voltage adjuster that adjusts voltage on a power source side to be supplied to a load and a controller that includes a temperature calculation part which calculates temperature information of an electric wire based on a current value flowing through the voltage adjuster. The controller sets a first time constant as a time constant used to calculate the temperature information while the voltage adjuster is in the interrupted state, and sets a second time constant as a time constant used to calculate the temperature information while the voltage adjuster supplies power to the load. The first time constant is a value larger than the second time constant and equal to or larger than an actual time constant of the electric wire, and the second time constant is a value smaller than the actual time constant of the electric wire.Type: ApplicationFiled: March 5, 2018Publication date: September 13, 2018Applicants: Yazaki Corporation, HONDA MOTOR CO., LTD.Inventors: Takashi KIKUCHI, Keisuke UETA, Syunsuke NAGAKURA, Takahiro MIYAKAWA, Tomoya NISHINO, Noboru UJIGAWA, Seiju KAWAMATA, Masataka TSUKIOKA, Rikuya EZOE
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Publication number: 20180261996Abstract: An electric-wire protection device includes a voltage adjustment unit that adjusts the voltage to a load, and a controller that includes a temperature calculation unit that calculates temperature information on an electric wire from a value of current, and makes the voltage adjustment unit into a shut-off state based on the temperature information. The temperature information is calculated from an amount of temperature changes based on the current value and a predetermined initial value. The controller shifts into a sleep state when a sleep condition is satisfied that includes a condition that the temperature information is lower than the initial value. The initial value when the controller returns from the sleep state is based on a convergence value of temperature in conducting energization on the electric wire at a maximum value of steady-state current.Type: ApplicationFiled: March 5, 2018Publication date: September 13, 2018Applicants: Yazaki Corporation, HONDA MOTOR CO., LTD.Inventors: Takashi KIKUCHI, Keisuke UETA, Syunsuke NAGAKURA, Takahiro MIYAKAWA, Tomoya NISHINO, Noboru UJIGAWA, Seiju KAWAMATA, Masataka TSUKIOKA, Rikuya EZOE
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Patent number: 6075438Abstract: A communication network for vehicle control and a method of diagnosing the same in which the self-diagnosis functions attributed to some of control units in the communication network are combined with a manual diagnosis operation, whereby the diagnosis can be carried out by a relatively simple arrangement without sacrificing readiness and correctness, thus ensuring higher cost performance and reliability. The communication network includes control units, each coupled to at least one of auxiliary input and output devices, connected with communication lines to one another for transmitting and receiving unique signals. Each of at least two of the control units includes a transmitter, a receiver, a controller, and an indicating means, and has a diagnosis function.Type: GrantFiled: February 6, 1997Date of Patent: June 13, 2000Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tomofumi Abe, Hirofumi Ohtsuka, Hirohide Suda, Kouji Yamaoka, Seiju Kawamata