Patents by Inventor Takehito Fujii
Takehito Fujii 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: 20240152141Abstract: An ADK determines whether or not a subject device has stopped operation due to control interference caused by a user operation and an ADK operation that were simultaneously performed. When the ADK determines that the subject device has stopped operation due to control interference caused by the user operation and the ADK operation that were simultaneously performed, the ADK transmits to a VP (VCIB), a control request (an operation command) indicating “no request (No request)” corresponding to the subject device that has stopped operation.Type: ApplicationFiled: September 13, 2023Publication date: May 9, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Eisuke ANDO, Takehito FUJII
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Publication number: 20240132089Abstract: When a headlight driver input indicates an AUTO mode, a VCIB accepts a headlight mode request from an ADK. The VCIB identifies a current headlight driver input. The VCIB reads first correspondence information and checks the identified headlight driver input and the accepted headlight mode request against the first correspondence information to determine an illumination status of a headlight.Type: ApplicationFiled: October 15, 2023Publication date: April 25, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Eisuke ANDO, Takehito FUJII
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Patent number: 11897488Abstract: An autonomous driving assistance device includes a manual driving control section, an autonomous driving control section, and a travelling condition determining section. If it is detected that there is a malfunction in a first sensor during control of the autonomous driving of the vehicle, the autonomous driving control section executes emergency autonomous driving until a predetermined condition is satisfied while changing, based on the determined travelling condition, a driving manner of an emergency autonomous driving as compared with a driving manner of the autonomous driving executed before no malfunctions are detected in the first sensor; and after the emergency autonomous driving is terminated, the autonomous driving assistance device being configured to selectively execute one of: causing the autonomous driving control section to stop the vehicle; and causing the manual driving control section to control the manual driving.Type: GrantFiled: December 28, 2021Date of Patent: February 13, 2024Assignee: DENSO CORPORATIONInventors: Kouichi Masuda, Hiroshi Ishikawa, Takahisa Yokoyama, Takehito Fujii
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Publication number: 20230139795Abstract: A body system determines whether or not entrance doors of all seats or entrance doors of rear seats are unlocked. When determination as YES is made, the body system determines whether or not a trunk operate command received by a VCIB from an ADK (ADS) indicates an “Open/Close Request” for a trunk door. When determination as YES is made, the body system determines whether or not it keeps receiving the “Open/Close Request” for one second. When determination as YES is made, the body system starts an action of the trunk door.Type: ApplicationFiled: September 19, 2022Publication date: May 4, 2023Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Eisuke ANDO, Takehito FUJII
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Patent number: 11338818Abstract: An autonomous driving assistance device includes a manual driving control section, an autonomous driving control section, and a travelling condition determining section. If it is detected that there is a malfunction in a first sensor during control of the autonomous driving of the vehicle, the autonomous driving control section executes emergency autonomous driving until a predetermined condition is satisfied while changing, based on the determined travelling condition, a driving manner of an emergency autonomous driving as compared with a driving manner of the autonomous driving executed before no malfunctions are detected in the first sensor; and after the emergency autonomous driving is terminated, the autonomous driving assistance device being configured to selectively execute one of: causing the autonomous driving control section to stop the vehicle; and causing the manual driving control section to control the manual driving.Type: GrantFiled: November 13, 2019Date of Patent: May 24, 2022Assignee: DENSO CORPORATIONInventors: Kouichi Masuda, Hiroshi Ishikawa, Takahisa Yokoyama, Takehito Fujii
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Publication number: 20220135056Abstract: An autonomous driving assistance device includes a manual driving control section, an autonomous driving control section, and a travelling condition determining section. If it is detected that there is a malfunction in a first sensor during control of the autonomous driving of the vehicle, the autonomous driving control section executes emergency autonomous driving until a predetermined condition is satisfied while changing, based on the determined travelling condition, a driving manner of an emergency autonomous driving as compared with a driving manner of the autonomous driving executed before no malfunctions are detected in the first sensor; and after the emergency autonomous driving is terminated, the autonomous driving assistance device being configured to selectively execute one of: causing the autonomous driving control section to stop the vehicle; and causing the manual driving control section to control the manual driving.Type: ApplicationFiled: December 28, 2021Publication date: May 5, 2022Inventors: Kouichi MASUDA, Hiroshi ISHIKAWA, Takahisa YOKOYAMA, Takehito FUJII
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Publication number: 20200079394Abstract: An autonomous driving assistance device includes a manual driving control section, an autonomous driving control section, and a travelling condition determining section. If it is detected that there is a malfunction in a first sensor during control of the autonomous driving of the vehicle, the autonomous driving control section executes emergency autonomous driving until a predetermined condition is satisfied while changing, based on the determined travelling condition, a driving manner of an emergency autonomous driving as compared with a driving manner of the autonomous driving executed before no malfunctions are detected in the first sensor; and after the emergency autonomous driving is terminated, the autonomous driving assistance device being configured to selectively execute one of: causing the autonomous driving control section to stop the vehicle; and causing the manual driving control section to control the manual driving.Type: ApplicationFiled: November 13, 2019Publication date: March 12, 2020Inventors: Kouichi MASUDA, Hiroshi ISHIKAWA, Takahisa YOKOYAMA, Takehito FUJII
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Patent number: 8234041Abstract: A correction value calculating section 70 is provided with a pinion shaft torsion angle correction value calculating section 74 and a pinion shaft torsion angular velocity correction value calculating section 75 for calculating a correction value in consideration with the transmission characteristic of the steering assist torque from the electric motor 6 to the steerable vehicle wheel 9. Therefore, the electric motor 6 can generate the steering assist torque compensating for the influence by the transmission characteristic of the steering assist torque from the electric motor 6 to the steerable vehicle wheel 9 by correcting a target value defined by a detection value of the torque sensor 3 with the correction value.Type: GrantFiled: October 21, 2008Date of Patent: July 31, 2012Assignee: Denso CorporationInventors: Takehito Fujii, Motoaki Kataoka, Kunihiko Chiba, Daiji Watanabe
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Patent number: 8229643Abstract: An acceleration control system stores a target acceleration calculation equation acquired by transforming an equation that expresses that a product of the differentiation of the square power of the speed and the environmental factor ?env represents a sensed value ? of acceleration. A surrounding environment monitor device detects surrounding bodies present in the forward periphery of the vehicle, and an environmental factor calculation unit calculates the environmental factor ?env by using the detected positions of the surrounding bodies. A target acceleration setting unit successively sets target accelerations aref in compliance with the target acceleration calculation equation by using the environmental factor ?env. The acceleration is executed to match the driver's feeling.Type: GrantFiled: October 27, 2010Date of Patent: July 24, 2012Assignee: Denso CorporationInventors: Hiroshi Inou, Minoru Okada, Takehito Fujii, Seiji Totsuka
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Patent number: 8170797Abstract: A method and an apparatus for estimating behaviors of a vehicle are provided. At least two GPS antennas are located along a longitudinal axis of a vehicle so that speed vectors at the positions where the GPS antennas are located can be determined based on GPS signals received by the GPS antennas. The speed vectors are known to be estimated with high accuracy based on the GPS signals. The positions of the GPS antennas on the local coordinate system are estimated based on such highly accurate speed vectors, so that the estimated positions may also have high accuracy. Based on a line connecting these highly accurate positions of the GPS antennas, an inclination of the longitudinal axis of the vehicle is estimated. Use of the high-accuracy speed vectors enables high-accuracy estimation on the positions of the GPS antennas and the vehicle direction on the local coordinate system.Type: GrantFiled: December 20, 2010Date of Patent: May 1, 2012Assignee: Denso CorporationInventors: Minoru Okada, Mamoru Sawada, Takehito Fujii, Hiromichi Tanaka
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Patent number: 8140222Abstract: A control unit estimates reverse transfer torque transferred from tires to a steering wheel and calculates an assist gain based on the reverse transfer torque. The control unit calculates basic assist torque demand by multiplying torsion torque detected by a torque sensor by the assist gain. The control unit further calculates assist torque command by adding compensation for stabilization. Since the assist gain is determined based on the reverse transfer torque, actual assist torque is generated in accordance with the force transferred from the road surface. Thus, a driver can operate the steering wheel while feeling the force from the road surface.Type: GrantFiled: October 1, 2008Date of Patent: March 20, 2012Assignee: Denso CorporationInventors: Daiji Watanabe, Tomoyuki Hori, Motoaki Kataoka, Shuji Kuramitsu, Takehito Fujii
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Patent number: 8082081Abstract: A vehicle control system controls vibrations that are generated at a plurality of portions of a vehicle. An engine/drive system ECU and a brake system ECU store the same vehicle vibration model that is separated into a vehicle body vibration model, a chassis vibration model and a tire vibration model, respectively. The engine/drive system ECU controls the suppression of the vehicle body vibrations that are estimated from the vehicle vibration model and the brake system ECU controls the suppression of the chassis vibrations and the tire vibrations. Accordingly, it is easy to execute control for suppressing the respective vibrations.Type: GrantFiled: April 2, 2008Date of Patent: December 20, 2011Assignee: Denso CorporationInventors: Toshiki Matsumoto, Mamoru Sawada, Takehito Fujii
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Patent number: 7997363Abstract: A vehicle control system calculates driver-required wheel torque, correction wheel torque to stabilize vehicle motion, required output shaft torque, alternator base torque, target engine torque and alternator torque to realize the output shaft torque. The required output shaft torque is required to realize vehicle motion, and the alternator base torque is required to maintain amounts of electric power in batteries. In order to realize the torque including wide band frequency torque, a torque division unit divides the sum of the torque into each torque actuator response frequency torque. Therefore, the target alternator torque is calculated by the alternator base torque to maintain electric power in batteries and high frequency band torque required by vehicle motion control.Type: GrantFiled: September 9, 2008Date of Patent: August 16, 2011Assignee: Denso CorporationInventors: Katsuyuki Mori, Mamoru Sawada, Toshiki Matsumoto, Takehito Fujii
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Publication number: 20110093198Abstract: A method and an apparatus for estimating behaviors of a vehicle are provided. At least two GPS antennas are located along a longitudinal axis of a vehicle so that speed vectors at the positions where the GPS antennas are located can be determined based on GPS signals received by the GPS antennas. The speed vectors are known to be estimated with high accuracy based on the GPS signals. The positions of the GPS antennas on the local coordinate system are estimated based on such highly accurate speed vectors, so that the estimated positions may also have high accuracy. Based on a line connecting these highly accurate positions of the GPS antennas, an inclination of the longitudinal axis of the vehicle is estimated. Use of the high-accuracy speed vectors enables high-accuracy estimation on the positions of the GPS antennas and the vehicle direction on the local coordinate system.Type: ApplicationFiled: December 20, 2010Publication date: April 21, 2011Applicant: DENSO CORPORATIONInventors: Minoru Okada, Mamoru Sawada, Takehito Fujii, Hiromichi Tanaka
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Publication number: 20110071745Abstract: An acceleration control system stores a target acceleration calculation equation acquired by transforming an equation that expresses that a product of the differentiation of the square power of the speed and the environmental factor ?env represents a sensed value ? of acceleration. A surrounding environment monitor device detects surrounding bodies present in the forward periphery of the vehicle, and an environmental factor calculation unit calculates the environmental factor ?env by using the detected positions of the surrounding bodies. A target acceleration setting unit successively sets target accelerations ?ref in compliance with the target acceleration calculation equation by using the environmental factor ?env. The acceleration is executed to match the driver's feeling.Type: ApplicationFiled: October 27, 2010Publication date: March 24, 2011Applicant: DENSO CORPORATIONInventors: Hiroshi Inou, Minoru Okada, Takehito Fujii, Seiji Totsuka
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Patent number: 7885765Abstract: A method and an apparatus for estimating behaviors of a vehicle are provided. At least two GPS antennas are located along a longitudinal axis of a vehicle so that speed vectors at the positions where the GPS antennas are located can be determined based on GPS signals received by the GPS antennas. The speed vectors are known to be estimated with high accuracy based on the GPS signals. The positions of the GPS antennas on the local coordinate system are estimated based on such highly accurate speed vectors, so that the estimated positions may also have high accuracy. Based on a line connecting these highly accurate positions of the GPS antennas, an inclination of the longitudinal axis of the vehicle is estimated. Use of the high-accuracy speed vectors enables high-accuracy estimation on the positions of the GPS antennas and the vehicle direction on the local coordinate system.Type: GrantFiled: July 26, 2007Date of Patent: February 8, 2011Assignee: Denso CorporationInventors: Minoru Okada, Mamoru Sawada, Takehito Fujii, Hiromichi Tanaka
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Patent number: 7853390Abstract: An acceleration control system stores a target acceleration calculation equation acquired by transforming an equation that expresses that a product of the differentiation of the square power of the speed and the environmental factor ?env represents a sensed value ? of acceleration. A surrounding environment monitor device detects surrounding bodies present in the forward periphery of the vehicle, and an environmental factor calculation unit calculates the environmental factor ?env by using the detected positions of the surrounding bodies. A target acceleration setting unit successively sets target accelerations aref in compliance with the target acceleration calculation equation by using the environmental factor ?env. The acceleration is executed to match the driver's feeling.Type: GrantFiled: June 24, 2008Date of Patent: December 14, 2010Assignee: Denso CorporationInventors: Hiroshi Inou, Minoru Okada, Takehito Fujii, Seiji Totsuka
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Publication number: 20100228441Abstract: In a steering system, a generator generates a first commanded value for assist torque, and a converter converts a second commanded value for the assist torque to a commanded current value. A current controller controls a drive current for driving a motor for generating the assist torque. A characteristic limiter is functionally interposed between a commanded-value generator and a converter, and limits, to a preset characteristic range, a characteristic of a functional downstream of the converter in the steering system. The functional downstream of the converter in the steering system includes a steering mechanism including the motor. The commanded-value generator inputs, to the characteristic limiter, the first commanded value. The characteristic limiter determines the second commanded current value for the assist torque based on the characteristic of the functional downstream and the first commanded value.Type: ApplicationFiled: March 9, 2010Publication date: September 9, 2010Applicant: DENSO CORPORATIONInventors: Daiji Watanabe, Takehito Fujii, Tomoyuki Hori
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Publication number: 20090112406Abstract: A correction value calculating section 70 is provided with a pinion shaft torsion angle correction value calculating section 74 and a pinion shaft torsion angular velocity correction value calculating section 75 for calculating a correction value in consideration with the transmission characteristic of the steering assist torque from the electric motor 6 to the steerable vehicle wheel 9. Therefore, the electric motor 6 can generate the steering assist torque compensating for the influence by the transmission characteristic of the steering assist torque from the electric motor 6 to the steerable vehicle wheel 9 by correcting a target value defined by a detection value of the torque sensor 3 with the correction value.Type: ApplicationFiled: October 21, 2008Publication date: April 30, 2009Applicant: DENSO CORPORATIONInventors: Takehito Fujii, Motoaki Kataoka, Kunihiko Chiba, Daiji Watanabe
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Publication number: 20090099731Abstract: A control unit estimates reverse transfer torque transferred from tires to a steering wheel and calculates an assist gain based on the reverse transfer torque. The control unit calculates basic assist torque demand by multiplying torsion torque detected by a torque sensor by the assist gain. The control unit further calculates assist torque command by adding compensation for stabilization. Since the assist gain is determined based on the reverse transfer torque, actual assist torque is generated in accordance with the force transferred from the road surface. Thus, a driver can operate the steering wheel while feeling the force from the road surface.Type: ApplicationFiled: October 1, 2008Publication date: April 16, 2009Applicant: DENSO CORPORATIONInventors: Daiji Watanabe, Tomoyuki Hori, Motoaki Kataoka, Shuji Kuramitsu, Takehito Fujii