Patents by Inventor Hiroya Fujiwara
Hiroya Fujiwara 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: 20240146633Abstract: An object of the present disclosure is to measure a delay time occurring in a device that receives or outputs a video or an audio without requiring a special apparatus or precise inter-apparatus time synchronization.Type: ApplicationFiled: June 25, 2021Publication date: May 2, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Tatsuya FUKUI, Toshihito FUJIWARA, Ryota SHIINA, Hiroya ONO
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Publication number: 20240129033Abstract: An object of the present invention is to provide a communication method, a transceiver, a relay, a communication system, and a program capable of performing high-speed communication even in a case where there is an obstacle between two separated points in water. In this communication method, two points each confirm the other's position by using sound wave communication which is likely to be diffracted as a wave due to a relatively small frequency and a large wavelength. Since the communication method uses optical wireless communication in which straightness is high but high-speed communication is possible, a relay capable of forming a path for communication while avoiding an obstacle is selected from a plurality of relays. In this communication method, signals are transmitted and received by using optical wireless communication using a relay on the path.Type: ApplicationFiled: February 26, 2021Publication date: April 18, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Satoshi NARIKAWA, Toshihito FUJIWARA, Hiroya ONO
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Publication number: 20240121505Abstract: An object of the present disclosure is to reduce a delay time from input of a plurality of videos to output of combined videos. The present disclosure is a video combining device detecting a time deviation between a timing of a frame of each video and a predetermined timing when videos from a plurality of cameras are combined into one screen, giving an instruction for an imaging frame rate to the cameras such that the time deviation is reduced, and combining the videos from the plurality of cameras into one screen and outputting the combined videos.Type: ApplicationFiled: February 18, 2021Publication date: April 11, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hiroya ONO, Toshihito FUJIWARA, Tatsuya FUKUI
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Publication number: 20240121005Abstract: An object of the present invention is to provide a communication method, a transceiver, a relay, a communication system, and a program capable of performing high-speed communication even in a case where there is an obstacle between two separated points in water. In this communication method, two points each confirm the other's position by using sound wave communication which is likely to be diffracted as a wave due to a relatively small frequency and a large wavelength. Since the communication method uses optical wireless communication in which straightness is high but high-speed communication is possible, a path for communication while avoiding an obstacle via a relay is calculated. In the communication method, the relay is guided and moved to an appropriate place according to the calculated path, and a signal is transmitted and received by using optical wireless communication using the relay that has moved to an appropriate place.Type: ApplicationFiled: February 26, 2021Publication date: April 11, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Satoshi NARIKAWA, Toshihito FUJIWARA, Hiroya ONO
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Publication number: 20240119018Abstract: An object of the present disclosure is to enable data collection from a plurality of USB devices installed at remote locations. The present disclosure is a USB transmission system including: a device-side transmitter/receiver configured to transmit/receive data to/from a USB device; and a host-side transmitter/receiver configured to transmit/receive data to/from a USB host, in which each of the device-side transmitter/receiver and the host-side transmitter/receiver includes a data transmission/reception unit configured to transmit/receive a packet of a USB protocol layer via a data network, and the host-side transmitter/receiver includes a hub configured to transfer data to be transmitted/received by the data transmission/reception unit included in the host-side transmitter/receiver to the USB host.Type: ApplicationFiled: February 18, 2021Publication date: April 11, 2024Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Tatsuya FUKUI, Toshihito FUJIWARA, Hiroya ONO, Ryota SHIINA, Tomohiko IKEDA
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Patent number: 11565669Abstract: A braking force controller causes a first actuator unit to generate a target jerk when the target jerk is equal to or larger than a first jerk, causes the first actuator unit to generate the first jerk and a second actuator unit to generate a jerk obtained by subtracting the first jerk from the target jerk as an additional jerk when the target jerk is smaller than the first jerk and equal to or larger than the sum of the first jerk and a second jerk, and causes the first actuator unit to generate the first jerk and the second actuator unit to generate the second jerk as the additional jerk when the target jerk is smaller than the sum of the first jerk and the second jerk.Type: GrantFiled: April 14, 2022Date of Patent: January 31, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shun Sato, Kazuki Miyake, Yoshihisa Yamada, Akitsugu Sakai, Kazumitsu Sugano, Hiroya Fujiwara, Hiromasa Takai
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Patent number: 11453377Abstract: A braking force control apparatus includes: a prediction unit that predicts a time from a present time until a next start of the gear shift operation in the stepped automatic transmission based on a speed of the vehicle; an acquisition unit that acquires a state of a battery charged by a regenerative power generation of the regenerative generator; and a control unit that stops the regenerative power generation by the regenerative generator before the gear shift of the stepped automatic transmission is started, when it is determined, during the regenerative power generation by the regenerative generator, that the regenerative power generation by the regenerative power generator may be stopped due to the state of the battery during the gear shift operation of the stepped automatic transmission, based on a prediction result by the prediction unit and the state of the battery acquired by the acquisition unit.Type: GrantFiled: April 9, 2020Date of Patent: September 27, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Matsumiya, Shun Sato, Hiroya Fujiwara, Masahiro Nishiu
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Patent number: 11420611Abstract: A braking force control apparatus includes: a prediction unit that predicts a time from a present time until a next start of the gear shift operation in the stepped automatic transmission based on a speed of the vehicle; an acquisition unit that acquires a state of a battery charged by a regenerative power generation of the regenerative generator; and a control unit that stops the regenerative power generation by the regenerative generator before the gear shift of the stepped automatic transmission is started, when it is determined, during the regenerative power generation by the regenerative generator, that the regenerative power generation by the regenerative power generator may be stopped due to the state of the battery during the gear shift operation of the stepped automatic transmission, based on a prediction result by the prediction unit and the state of the battery acquired by the acquisition unit.Type: GrantFiled: April 9, 2020Date of Patent: August 23, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuki Matsumiya, Shun Sato, Hiroya Fujiwara, Masahiro Nishiu
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Publication number: 20220234553Abstract: A braking force controller causes a first actuator unit to generate a target jerk when the target jerk is equal to or larger than a first jerk, causes the first actuator unit to generate the first jerk and a second actuator unit to generate a jerk obtained by subtracting the first jerk from the target jerk as an additional jerk when the target jerk is smaller than the first jerk and equal to or larger than the sum of the first jerk and a second jerk, and causes the first actuator unit to generate the first jerk and the second actuator unit to generate the second jerk as the additional jerk when the target jerk is smaller than the sum of the first jerk and the second jerk.Type: ApplicationFiled: April 14, 2022Publication date: July 28, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shun SATO, Kazuki MIYAKE, Yoshihisa YAMADA, Akitsugu SAKAI, Kazumitsu SUGANO, Hiroya FUJIWARA, Hiromasa TAKAI
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Patent number: 11338779Abstract: A braking force controller causes a first actuator unit to generate a target jerk when the target jerk is equal to or larger than a first jerk, causes the first actuator unit to generate the first jerk and a second actuator unit to generate a jerk obtained by subtracting the first jerk from the target jerk as an additional jerk when the target jerk is smaller than the first jerk and equal to or larger than the sum of the first jerk and a second jerk, and causes the first actuator unit to generate the first jerk and the second actuator unit to generate the second jerk as the additional jerk when the target jerk is smaller than the sum of the first jerk and the second jerk.Type: GrantFiled: January 15, 2020Date of Patent: May 24, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shun Sato, Kazuki Miyake, Yoshihisa Yamada, Akitsugu Sakai, Kazumitsu Sugano, Hiroya Fujiwara, Hiromasa Takai
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Patent number: 10890249Abstract: A shift control device for a vehicle, includes: a minimum vehicle speed calculator that, when it is determined that a vehicle on traveling needs to decelerate before the vehicle arrives at a forward predetermined point, calculates a minimum vehicle speed using the periphery information; a shift position determination unit that determines a target shift position; and a downshift controller that, when the minimum vehicle speed is calculated, commences a downshift from a current shift position to the target shift position. Further, the downshift controller implements first control of performing multiple downshifts from the current shift position to the target shift position such that shift timing is provided at regular intervals, or second control of performing multiple downshifts such that rotational speeds of the engine after the respective downshifts become equal to each other.Type: GrantFiled: October 24, 2019Date of Patent: January 12, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Fujiwara, Shun Sato
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Publication number: 20200339098Abstract: A braking force control apparatus includes: a prediction unit that predicts a time from a present time until a next start of the gear shift operation in the stepped automatic transmission based on a speed of the vehicle; an acquisition unit that acquires a state of a battery charged by a regenerative power generation of the regenerative generator; and a control unit that stops the regenerative power generation by the regenerative generator before the gear shift of the stepped automatic transmission is started, when it is determined, during the regenerative power generation by the regenerative generator, that the regenerative power generation by the regenerative power generator may be stopped due to the state of the battery during the gear shift operation of the stepped automatic transmission, based on a prediction result by the prediction unit and the state of the battery acquired by the acquisition unit.Type: ApplicationFiled: April 9, 2020Publication date: October 29, 2020Applicant: Toyota Jidosha Kabushiki KaishaInventors: Yuki Matsumiya, Shun Sato, Hiroya Fujiwara, Masahiro Nishiu
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Publication number: 20200262398Abstract: A braking force controller causes a first actuator unit to generate a target jerk when the target jerk is equal to or larger than a first jerk, causes the first actuator unit to generate the first jerk and a second actuator unit to generate a jerk obtained by subtracting the first jerk from the target jerk as an additional jerk when the target jerk is smaller than the first jerk and equal to or larger than the sum of the first jerk and a second jerk, and causes the first actuator unit to generate the first jerk and the second actuator unit to generate the second jerk as the additional jerk when the target jerk is smaller than the sum of the first jerk and the second jerk.Type: ApplicationFiled: January 15, 2020Publication date: August 20, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shun SATO, Kazuki MIYAKE, Yoshihisa YAMADA, Akitsugu SAKAI, Kazumitsu SUGANO, Hiroya FUJIWARA, Hiromasa TAKAI
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Publication number: 20200132188Abstract: A shift control device for a vehicle, includes: a minimum vehicle speed calculator that, when it is determined that a vehicle on traveling needs to decelerate before the vehicle arrives at a forward predetermined point, calculates a minimum vehicle speed using the periphery information; a shift position determination unit that determines a target shift position; and a downshift controller that, when the minimum vehicle speed is calculated, commences a downshift from a current shift position to the target shift position. Further, the downshift controller implements first control of performing multiple downshifts from the current shift position to the target shift position such that shift timing is provided at regular intervals, or second control of performing multiple downshifts such that rotational speeds of the engine after the respective downshifts become equal to each other.Type: ApplicationFiled: October 24, 2019Publication date: April 30, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya FUJIWARA, Shun SATO
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Patent number: 9739220Abstract: A vehicle drive control device in a vehicle including an engine comprising a throttle valve and a supercharger with an air bypass valve changed from a closing side to an opening side when a closing speed of the throttle valve is higher than a speed determination value, the vehicle drive control device providing a torque-down control of the engine by operating the throttle valve to a closing side, wherein at the time of provision of the torque-down control of the engine in which the throttle valve is operated to the closing side when a rotation speed of the engine is equal to or greater than a predetermined rotation speed and a speed ratio of a torque converter is equal to or less than a predetermined value in a supercharged state, the throttle valve is caused to perform a closing operation at the closing speed lower than the speed determination value.Type: GrantFiled: June 16, 2015Date of Patent: August 22, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Wataru Matsubara, Hiroya Fujiwara, Akira Hino, Shuhei Ishikawa
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Patent number: 9341263Abstract: Vehicle control device of vehicle including lockup clutch configured to directly couple between input/output rotating members of fluid power transmission device transmitting power of engine to automatic transmission, vehicle control device engaging lockup clutch when running state of vehicle in predetermined running state, vehicle control device providing lockup clutch pressure learning control of learning oil pressure of lockup clutch used in start-time lockup slip control in which lockup clutch placed in slip-engaged state toward engaged state at start of vehicle based on rotation speed of engine at time of engagement of lockup clutch, vehicle control device inhibiting engagement of lockup clutch when running state of vehicle in predetermined running state and also in second predetermined running state, vehicle control device engaging lockup clutch after running state of vehicle goes out of second predetermined running state, and providing lockup clutch pressure learning control in engaging process of lockuType: GrantFiled: June 19, 2015Date of Patent: May 17, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Wataru Matsubara, Hiroya Fujiwara, Akira Hino, Shun Minaki, Naoto Tanaka
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Publication number: 20150369361Abstract: Vehicle control device of vehicle including lockup clutch configured to directly couple between input/output rotating members of fluid power transmission device transmitting power of engine to automatic transmission, vehicle control device engaging lockup clutch when running state of vehicle in predetermined running state, vehicle control device providing lockup clutch pressure learning control of learning oil pressure of lockup clutch used in start-time lockup slip control in which lockup clutch placed in slip-engaged state toward engaged state at start of vehicle based on rotation speed of engine at time of engagement of lockup clutch, vehicle control device inhibiting engagement of lockup clutch when running state of vehicle in predetermined running state and also in second predetermined running state, vehicle control device engaging lockup clutch after running state of vehicle goes out of second predetermined running state, and providing lockup clutch pressure learning control in engaging process of lockuType: ApplicationFiled: June 19, 2015Publication date: December 24, 2015Inventors: Wataru MATSUBARA, Hiroya FUJIWARA, Akira HINO, Shun MINAKI, Naoto TANAKA
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Publication number: 20150369149Abstract: A vehicle drive control device in a vehicle including an engine comprising a throttle valve and a supercharger with an air bypass valve changed from a closing side to an opening side when a closing speed of the throttle valve is higher than a speed determination value, the vehicle drive control device providing a torque-down control of the engine by operating the throttle valve to a closing side, wherein at the time of provision of the torque-down control of the engine in which the throttle valve is operated to the closing side when a rotation speed of the engine is equal to or greater than a predetermined rotation speed and a speed ratio of a torque converter is equal to or less than a predetermined value in a supercharged state, the throttle valve is caused to perform a closing operation at the closing speed lower than the speed determination value.Type: ApplicationFiled: June 16, 2015Publication date: December 24, 2015Inventors: Wataru MATSUBARA, Hiroya FUJIWARA, Akira HINO, Shuhei ISHIKAWA
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Patent number: 8909441Abstract: A driving power source rotational speed control device is provided in a vehicle outputs power of a rotary driving power source via a continuously variable transmission as motive power, that changes the rotational speed of the rotary driving power source in association with changes in the vehicle speed when acceleration is requested. The control device includes: acceleration/deceleration state determination means determines whether the vehicle is accelerating or decelerating when acceleration is requested; and rotary driving power source rotational speed change setting means sets the change gradient of the rotary driving power source rotational speed to establish the association of the rotary driving power source rotational speed with changes in the vehicle speed when acceleration is requested.Type: GrantFiled: November 12, 2008Date of Patent: December 9, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroya Fujiwara, Akira Hino
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Publication number: 20100235061Abstract: A driving power source rotational speed control device is provided in a vehicle outputs power of a rotary driving power source via a continuously variable transmission as motive power, that changes the rotational speed of the rotary driving power source in association with changes in the vehicle speed when acceleration is requested. The control device includes: acceleration/deceleration state determination means determines whether the vehicle is accelerating or decelerating when acceleration is requested; and rotary driving power source rotational speed change setting means sets the change gradient of the rotary driving power source rotational speed to establish the association of the rotary driving power source rotational speed with changes in the vehicle speed when acceleration is requested.Type: ApplicationFiled: November 12, 2008Publication date: September 16, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroya Fujiwara, Akira Hino