Patents by Inventor Tatsuya HORIGUCHI
Tatsuya HORIGUCHI 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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Patent number: 11947486Abstract: The computing efficiency of an electronic computing device is improved. HPCs 20 to 23 include arithmetic processing units HA0 to HA3, respectively. Each of the arithmetic processing units HA0 to HA3 executes arithmetic processing in parallel. LPCs 30 to 33 includes management processing units LB0 to LB3, respectively. Each of the management processing units LB0 to LB3 manages execution of specific processing by an accelerator 6 when each of the arithmetic processing units HA0 to HA3 causes the accelerator 6 to execute the specific processing, and performs a series of commands for causing the accelerator 6 to execute the specific processing on a DMA controller 5 and the accelerator 6.Type: GrantFiled: March 25, 2020Date of Patent: April 2, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Tatsuya Horiguchi, Tasuku Ishigooka, Kazuyoshi Serizawa, Tsunamichi Tsukidate
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Patent number: 11845452Abstract: An electronic control device includes a first processing control unit and a second processing control unit, wherein: the first processing control unit and the second processing control unit alternately start arithmetic processing with information of an external environment as an input; and second arithmetic processing of the second processing control unit is started after first arithmetic processing by the first processing control unit is started and before the first arithmetic processing is ended.Type: GrantFiled: October 1, 2019Date of Patent: December 19, 2023Assignee: Hitachi Astemo, Ltd.Inventors: Taisuke Ueta, Tatsuya Horiguchi, Kenichi Shimbo, Hideyuki Sakamoto
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Publication number: 20230339484Abstract: Provided is a vehicle control device capable of executing control processing by utilizing a power saving execution determination unit that determines a shift to or a release from a normal mode to a power saving mode on the basis of a preset power saving condition, and a power saving execution unit that executes power saving control of the CPU by determining a shift to the power saving mode and stops the power saving control of the CPU by determining a release of the power saving mode. Then, the power saving execution determination unit has a plurality of power saving conditions, determines to shift to the power saving mode in a case where all of the plurality of power saving conditions are satisfied, and determines to release the power saving mode in the case of being changed to a state in which some of the power saving conditions are not satisfied.Type: ApplicationFiled: December 18, 2020Publication date: October 26, 2023Applicant: Hitachi Astemo, Ltd.Inventors: Tasuku ISHIGOOKA, Nobuyasu KANEKAWA, Tomohito EBINA, Kazuyoshi SERIZAWA, Tatsuya HORIGUCHI
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Patent number: 11789730Abstract: An electronic control device includes a processing control unit and an information acquisition unit.Type: GrantFiled: January 29, 2020Date of Patent: October 17, 2023Assignee: Hitachi Astemo, Ltd.Inventors: Taisuke Ueta, Tatsuya Horiguchi, Kenichi Shimbo, Hideyuki Sakamoto
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Patent number: 11541897Abstract: An object of the present invention is to enhance the reliability of an autonomous driving system. The autonomous driving system includes: a higher-level control device 1 that outputs a control target value of an actuator group based on an action plan of a vehicle; and a lower-level control device 2 that controls the actuator group of the vehicle based on a command from the higher-level control device 1. The lower-level control device 2 holds the control target value of the vehicle provided by the higher-level control device 1 over a specific period. When the higher-level control device 1 does not satisfy a desired function, the lower-level control device 2 is configured to be controlled based on the held control target value. The action plan is followed by determining and correcting a difference between an actual action value and the control target value of the vehicle.Type: GrantFiled: March 15, 2018Date of Patent: January 3, 2023Assignee: HITACHI ASTEMO, LTD.Inventors: Tatsuya Horiguchi, Teppei Hirotsu, Hideyuki Sakamoto, Ryohichi Inada
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Patent number: 11531896Abstract: The present invention addresses the problem of implementing a neural network using a small-scale circuit by simplifying the multiplication of the input data by weight data. The neural network circuit according to the present invention is configured from: a means for multiplying input data by a rounded value of the mantissa part of weight data; a means for shifting the multiplication result by the number of bits of the rounded value; a means for adding the shifted result to the original input data; and a means for shifting the addition result by the number of bits of the exponent part of the weight.Type: GrantFiled: January 10, 2017Date of Patent: December 20, 2022Assignee: Hitachi, Ltd.Inventors: Toshiaki Nakamura, Teppei Hirotsu, Tatsuya Horiguchi
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Patent number: 11511763Abstract: An electronic control device including a sensor fusion processing unit that integrates a plurality of pieces of sensor information having been input from a plurality of sensors. The electronic control device further including a behavior prediction processing unit that obtains a future value in which a future behavior of a target object is predicted based on joint information integrated by the sensor fusion processing unit. The electronic control device further including a comparison unit that compares a future value predicted by the behavior prediction processing unit with output information of each sensor of the sensor fusion processing unit at a predicted time.Type: GrantFiled: December 14, 2018Date of Patent: November 29, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Tatsuya Horiguchi, Hideyuki Sakamoto, Teppei Hirotsu
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Patent number: 11392093Abstract: A prediction control device controls an actuator for automatic driving of a vehicle including: a command value generation unit generating an operation amount for the actuator and an operation amount candidate as a predicted value; an output prediction unit outputting a control amount candidate as a predicted value corresponding to the actuator output by using an operation model; an evaluation function calculation unit expressing constraint conditions for the automatic driving; a situation degree detection obtaining a measure of giving priority to ride comfort or giving priority to danger avoidance of an own vehicle while traveling; and a responsiveness adjusting unit obtaining a next operation amount candidate from the situation degree from the situation degree detection unit. The operation command value generation unit generates an operation amount for the actuator, and the responsiveness adjusting unit adjusts the output of the evaluation function according to the situation degree.Type: GrantFiled: September 28, 2018Date of Patent: July 19, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Toshiaki Nakamura, Teppei Hirotsu, Tatsuya Horiguchi, Tadanobu Toba, Hideyuki Sakamoto
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Publication number: 20220214993Abstract: The computing efficiency of an electronic computing device is improved. HPCs 20 to 23 include arithmetic processing units HA0 to HA3, respectively. Each of the arithmetic processing units HA0 to HA3 executes arithmetic processing in parallel. LPCs 30 to 33 includes management processing units LB0 to LB3, respectively. Each of the management processing units LB0 to LB3 manages execution of specific processing by an accelerator 6 when each of the arithmetic processing units HA0 to HA3 causes the accelerator 6 to execute the specific processing, and performs a series of commands for causing the accelerator 6 to execute the specific processing on a DMA controller 5 and the accelerator 6.Type: ApplicationFiled: March 25, 2020Publication date: July 7, 2022Applicant: Hitachi Astemo, Ltd.Inventors: Tatsuya HORIGUCHI, Tasuku ISHIGOOKA, Kazuyoshi SERIZAWA, Tsunamichi TSUKIDATE
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Patent number: 11352019Abstract: An electronic control device for a vehicle according to the present invention includes an action prediction unit that predicts the action of an object around the vehicle on the basis of external information acquired from external information detection units that detect external information of the vehicle, and a determination unit for a detection unit that determines whether an abnormality has occurred in the external information detection unit by comparing external information acquired from the external information detection unit at the time corresponding to a prediction result of the action prediction unit to the prediction result of the action prediction unit.Type: GrantFiled: March 8, 2018Date of Patent: June 7, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Tatsuya Horiguchi, Hideyuki Sakamoto, Teppei Hirotsu
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Publication number: 20220058020Abstract: An electronic control device includes a processing control unit and an information acquisition unit.Type: ApplicationFiled: January 29, 2020Publication date: February 24, 2022Applicant: Hitachi Astemo, Ltd.Inventors: Taisuke UETA, Tatsuya HORIGUCHI, Kenichi SHIMBO, Hideyuki SAKAMOTO
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Publication number: 20220017119Abstract: Provided is an automatic driving system based on a model predictive control, the automatic driving system where, in an event of a failure of an actuator, identification between a real vehicle and a vehicle model is simplified. Based on information regarding the failure of the actuator, the automatic driving system updates a spot in the vehicle model, the spot corresponding to the spot of failure detected, to a fixed value, and causes an actuator control device for the actuator, where the failure is detected, to fix a command value that is overwritten in accordance with a state of the actuator. With this configuration, the identification between the real vehicle and the vehicle model is simplified.Type: ApplicationFiled: November 27, 2019Publication date: January 20, 2022Applicant: Hitachi Astemo, Ltd.Inventors: Yuki TANAKA, Tatsuya HORIGUCHI, Teppei HIROTSU, Hideyuki SAKAMOTO
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Publication number: 20210362706Abstract: The reliability of path planning calculation can be evaluated with low load without using multiplexing of calculation or an additional sensor.Type: ApplicationFiled: August 8, 2019Publication date: November 25, 2021Inventors: Tatsuya HORIGUCHI, Teppei HIROTSU, Hideyuki SAKAMOTO
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Patent number: 11173922Abstract: Achieved is a vehicle control device capable of performing seamless automatic driving control even when an operation abnormality occurs in an operation processing unit in a vehicle control device, and improving safety. When operation processing of an actuator control command is performed by two microcomputers of microcomputers 11b and 12b in synchronization, and a monitoring circuit 11m detects an abnormality of the microcomputer 11b, a communication circuit 11c that communicates the actuator control command of the microcomputer 11b to a brake control unit 13 or the like is latched in a disabled state, and the actuator control command from an icon 12b is transmitted to the brake control unit 13 or the like via the communication circuit 12c. The disabled state of the communication circuit 11c is maintained until an IGNSW or an automatic driving SW of the vehicle toggles, and until that time, the actuator control command from the microcomputer 12b is transmitted to the brake control unit 13 or the like.Type: GrantFiled: March 29, 2018Date of Patent: November 16, 2021Assignee: HITACHI ASTEMO, LTD.Inventors: Hideyuki Sakamoto, Tatsuya Horiguchi, Takeshi Yamakawa
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Publication number: 20210347375Abstract: An electronic control device includes a first processing control unit and a second processing control unit, wherein: the first processing control unit and the second processing control unit alternately start arithmetic processing with information of an external environment as an input; and second arithmetic processing of the second processing control unit is started after first arithmetic processing by the first processing control unit is started and before the first arithmetic processing is ended.Type: ApplicationFiled: October 1, 2019Publication date: November 11, 2021Inventors: Taisuke UETA, Tatsuya HORIGUCHI, Kenichi SHIMBO, Hideyuki SAKAMOTO
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Patent number: 11125572Abstract: There is achieved an electronic control device capable of calculating an optimal travel plan even during dynamic reconfiguration of a calculation circuit configuration. When a driving state changes, a travel plan parameter generation/selection unit divides evaluation calculation units into two blocks and performs reconfiguration of the respective evaluation calculation units a plurality of times via a reconfiguration control unit. While the evaluation calculation units are reconfigured, the evaluation calculation units performs evaluation calculation, and while the evaluation calculation units are reconfigured, the evaluation calculation units perform evaluation calculation. Thus, even while some of the evaluation calculation units are being reconfigured, it is possible to continue evaluation of the travel plan in the rest of the evaluation calculation units.Type: GrantFiled: October 26, 2017Date of Patent: September 21, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Ryoichi Inada, Tatsuya Horiguchi, Teppei Hirotsu, Hideyuki Sakamoto
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Patent number: 10955836Abstract: Provided is a method of detecting and preventing soft errors without performing multiplexing. As a result, it is possible to improve reliability of a device while suppressing an increase in mounting cost and reduction in operation speed accompanied with it. A diagnosis system includes an initial parameter generation unit which generates a plurality of initial parameters predicted on the basis of an external input; an operation unit which has a plurality of operators operating optimal solutions to the initial parameters by using an evaluation function describing a control object; and a diagnosis unit which diagnoses the operation unit on the basis of an output of the operation unit. When an optimal solution candidate giving an evaluation value deviating from a value taken by each evaluation value by a constant threshold or more among evaluation values corresponding to the optimal solutions to the initial parameters is found, the diagnosis unit diagnoses an error of the operation unit.Type: GrantFiled: April 13, 2017Date of Patent: March 23, 2021Assignee: Hitachi, Ltd.Inventors: Tatsuya Horiguchi, Teppei Hirotsu, Hiroshi Iwasawa
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Publication number: 20210053580Abstract: To provide an electronic control device generating low heat due to a simplified configuration and a reduced verification arithmetic load without multiplexing of sensors and calculations. A sensor fusion processing unit 4 that integrates a plurality of pieces of sensor information having been input from a plurality of first sensors 11 and second sensors 12, a behavior prediction processing unit 5 that obtains a surrounding object prediction map 8 in which a future behavior of a target object is predicted based on an own vehicle surrounding map 9 integrated by the sensor fusion processing unit 4, and a first comparison unit 102 that compares the surrounding object prediction map 8 predicted by the behavior prediction processing unit 5 with output information of each of the first sensors 11 and the second sensors 12 of the sensor fusion processing unit 4 at a predicted time are included.Type: ApplicationFiled: December 14, 2018Publication date: February 25, 2021Applicant: Hitachi Automotive Systems, Ltd.Inventors: Tatsuya HORIGUCHI, Hideyuki SAKAMOTO, Teppei HIROTSU
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Publication number: 20200301374Abstract: A prediction control device controls an actuator for automatic driving of a vehicle including: a command value generation unit generating an operation amount for the actuator and an operation amount candidate as a predicted value; an output prediction unit outputting a control amount candidate as a predicted value corresponding to the actuator output by using an operation model; an evaluation function calculation unit expressing constraint conditions for the automatic driving; a situation degree detection obtaining a measure of giving priority to ride comfort or giving priority to danger avoidance of an own vehicle while traveling; and a responsiveness adjusting unit obtaining a next operation amount candidate from the situation degree from the situation degree detection unit. The operation command value generation unit generates an operation amount for the actuator, and the responsiveness adjusting unit adjusts the output of the evaluation function according to the situation degree.Type: ApplicationFiled: September 28, 2018Publication date: September 24, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Toshiaki NAKAMURA, Teppei HIROTSU, Tatsuya HORIGUCHI, Tadanobu TOBA, Hideyuki SAKAMOTO
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Publication number: 20200139982Abstract: Achieved is a vehicle control device capable of performing seamless automatic driving control even when an operation abnormality occurs in an operation processing unit in a vehicle control device, and improving safety. When operation processing of an actuator control command is performed by two microcomputers of microcomputers 11b and 12b in synchronization, and a monitoring circuit 11m detects an abnormality of the microcomputer 11b, a communication circuit 11c that communicates the actuator control command of the microcomputer 11b to a brake control unit 13 or the like is latched in a disabled state, and the actuator control command from an icon 12b is transmitted to the brake control unit 13 or the like via the communication circuit 12c. The disabled state of the communication circuit 11c is maintained until an IGNSW or an automatic driving SW of the vehicle toggles, and until that time, the actuator control command from the microcomputer 12b is transmitted to the brake control unit 13 or the like.Type: ApplicationFiled: March 29, 2018Publication date: May 7, 2020Applicant: Hitachi Automotive Systems, Ltd.Inventors: Hideyuki SAKAMOTO, Tatsuya HORIGUCHI, Takeshi YAMAKAWA