Patents by Inventor Yuto Otsuki

Yuto Otsuki 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).

  • Patent number: 11691614
    Abstract: A vehicle includes a main drive unit, a sub drive unit, and a control unit. The main drive unit includes a main drive rotary electric machine. The sub drive unit includes a sub drive rotary electric machine. The control unit includes a driving force distribution ratio setting unit configured to set a driving force distribution ratio between the main driving force and the sub driving force and is configured to control the outputs of the main drive unit and the sub drive unit so that the main driving force and the sub driving force have the driving force distribution ratio set by the driving force distribution ratio setting unit. The driving force distribution ratio setting unit is configured to set the driving force distribution ratio to minimize electric power loss of the vehicle based on a vehicle speed of the vehicle and a required driving force of the vehicle.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: July 4, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuto Otsuki, Satoshi Ando, Keiichi Ohiso
  • Patent number: 11548496
    Abstract: A vehicle includes a main drive unit, a sub drive unit, and a control unit. The control unit includes a driving force distribution ratio setting unit and is configured to control the main drive unit and the sub drive unit. A drive mode of the main drive unit includes an electric power drive mode and an engine drive mode. The driving force distribution ratio setting unit is configured to set the driving force distribution ratio based on a vehicle speed, a required driving force, and the drive mode. When the drive mode is the engine drive mode, the driving force distribution ratio setting unit is configured to set the driving force distribution ratio so that a distribution ratio of the main driving force is 90% or more.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: January 10, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuto Otsuki, Satoshi Ando, Keiichi Ohiso
  • Publication number: 20220391505
    Abstract: A rule generation apparatus includes processing circuitry configured to enumerate rule candidates with different degrees of abstraction as candidates for a rule for detecting a malware trace using an analysis result of malware, and calculate evaluation values of the rule candidates enumerated using a predetermined evaluation function and sort a rule from among the rule candidates based on the evaluation values.
    Type: Application
    Filed: November 28, 2019
    Publication date: December 8, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuma KUROGOME, Yuhei KAWAKOYA, Makoto IWAMURA, Yuto OTSUKI, Jun MIYOSHI
  • Patent number: 11481307
    Abstract: For the purpose of reproducing a call stack accurately without restricting the range of application, a stack scanner extracts, from a stack area of a thread whose call stack is to be acquired in a memory space of an application process, possible return addresses that are addresses in a feasible region in the memory space each representing a command right after a function call command. A program analyzer analyzes a control flow representing a flow of control configured by a branch in a function that is called by the function call command right before the command represented by each of the possible return addresses and, when there is a route reaching a command currently being executed in the control flow, determines that the possible return address is a return address and, when there is not the route, determines that the possible return address is not a return address.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: October 25, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuto Otsuki, Yuhei Kawakoya, Makoto Iwamura, Takeo Hariu, Takeshi Yagi
  • Publication number: 20220283853
    Abstract: An analysis system includes processing circuitry configured to extract each running process and each thread in each process from data that records a state of a memory of an analysis object apparatus, acquire an object belonging to the process or the thread having been extracted, and specify a same object belonging to a plurality of processes or a plurality of threads among objects acquired and associate the plurality of processes or the plurality of threads to which the same object belongs.
    Type: Application
    Filed: August 7, 2019
    Publication date: September 8, 2022
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuhei KAWAKOYA, Makoto IWAMURA, Jun MIYOSHI, Yuto OTSUKI
  • Patent number: 11318848
    Abstract: A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: May 3, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Yuto Otsuki, Hirokazu Oguma
  • Patent number: 11260771
    Abstract: A vehicle power supply system is provided. The system includes a first power line connected by a first inverter and a first battery, a second power line connected by a second inverter and a second battery, a voltage converter, and a charging and discharging control device operating the inverters and the voltage converter. The control device charges the second battery with second regenerative electric power that is power supplied from the second inverter to the second power line in a case where a second SOC is equal to or less than the second regeneration permission upper limit during regenerative deceleration, and prohibits the second battery from being charged and supplies at least a portion of the second regenerative electric power to the first battery through the voltage converter and the first power line when the second SOC is larger than the second regeneration permission upper limit.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: March 1, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Yuto Otsuki, Hirokazu Oguma
  • Publication number: 20210390183
    Abstract: An analysis function imparting device according to the present invention includes processing circuitry configured to execute a script engine while monitoring the script engine to acquire an execution trace including an application programming interface (API) trace and a branch trace, analyze the execution trace, and detect a hook point that is a location to which a hook is applied and a code for analysis is inserted, detect, based on monitoring at the hook point, a tap point that is a memory monitoring location at which the code for analysis outputs a log, and apply a hook to the script engine to impart an analysis function to the script engine based on the hook point and the tap point.
    Type: Application
    Filed: May 21, 2019
    Publication date: December 16, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Toshinori USUI, Yuto OTSUKI, Makoto IWAMURA, Yuhei KAWAKOYA, Jun MIYOSHI
  • Patent number: 11182479
    Abstract: A call stack acquisition device reproduces, from a memory dump, a memory space of a process to which a thread as a production target of a call stack belongs. Then, the call stack acquisition device acquires execution context of the thread by acquiring, from a virtual memory space, register information of the thread, which is stored in a memory by an OS. In addition, the call stack acquisition device acquires a current stack position and a currently executed function from the acquired execution context. Thereafter, the call stack acquisition device acquires the call stack by tracing return addresses of a series of functions as callers of the currently executed function on the stack from metadata of an execution file of the process including the thread.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: November 23, 2021
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuto Otsuki, Yuhei Kawakoya, Makoto Iwamura, Takeo Hariu, Takeshi Yagi
  • Publication number: 20210276536
    Abstract: A vehicle includes a main drive unit, a sub drive unit, and a control unit. The control unit includes a driving force distribution ratio setting unit and is configured to control the main drive unit and the sub drive unit. A drive mode of the main drive unit includes an electric power drive mode and an engine drive mode. The driving force distribution ratio setting unit is configured to set the driving force distribution ratio based on a vehicle speed, a required driving force, and the drive mode. When the drive mode is the engine drive mode, the driving force distribution ratio setting unit is configured to set the driving force distribution ratio so that a distribution ratio of the main driving force is 90% or more.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 9, 2021
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yuto OTSUKI, Satoshi ANDO, Keiichi OHISO
  • Publication number: 20210276530
    Abstract: A vehicle includes a main drive unit, a sub drive unit, and a control unit. The main drive unit includes a main drive rotary electric machine. The sub drive unit includes a sub drive rotary electric machine. The control unit includes a driving force distribution ratio setting unit configured to set a driving force distribution ratio between the main driving force and the sub driving force and is configured to control the outputs of the main drive unit and the sub drive unit so that the main driving force and the sub driving force have the driving force distribution ratio set by the driving force distribution ratio setting unit. The driving force distribution ratio setting unit is configured to set the driving force distribution ratio to minimize electric power loss of the vehicle based on a vehicle speed of the vehicle and a required driving force of the vehicle.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 9, 2021
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yuto OTSUKI, Satoshi ANDO, Keiichi OHISO
  • Publication number: 20210245608
    Abstract: A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.
    Type: Application
    Filed: April 26, 2021
    Publication date: August 12, 2021
    Applicant: Honda Motor Co., Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA
  • Patent number: 11007883
    Abstract: A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: May 18, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Yuto Otsuki, Hirokazu Oguma
  • Patent number: 10981455
    Abstract: The electric vehicle includes a first battery, a second battery having an output weight density higher than that of the first battery and an energy weight density lower than that of the first battery, a motor generator, an electric power conversion circuit, and a control device for controlling the electric power conversion circuit. The control device controls the electric power conversion circuit so that, during a powering operation of the motor generator, at least a part of electric power necessary for changing a vehicle speed among requested electric power is discharged from the second battery, and remaining electric power obtained by subtracting the electric power discharged from the second battery from the requested electric power is discharged from the first battery; and it controls the electric power conversion circuit so that, during a regenerative operation of the motor generator, electric power generated is charged to the second battery.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: April 20, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuto Otsuki, Hirokazu Oguma
  • Patent number: 10960768
    Abstract: A vehicle power supply system includes a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter, a charging and discharging control device that operates the inverters and the voltage converter, and a second regenerable electric power acquisition unit that acquires second regenerable electric power. The charging and discharging control device charges the second battery with second regenerative electric power that is power supplied from the second inverter to the second power line during regenerative deceleration, and supplies second surplus regenerative electric power to the first power line in a case where the second regenerative electric power is larger than the second regenerable electric power, wherein the second surplus regenerative electric power is obtained by excluding the second regenerable electric power from the second regenerative electric power.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: March 30, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuya Oyama, Yuto Otsuki, Hirokazu Oguma
  • Publication number: 20200242002
    Abstract: For the purpose of reproducing a call stack accurately without restricting the range of application, a stack scanner extracts, from a stack area of a thread whose call stack is to be acquired in a memory space of an application process, possible return addresses that are addresses in a feasible region in the memory space each representing a command right after a function call command. A program analyzer analyzes a control flow representing a flow of control configured by a branch in a function that is called by the function call command right before the command represented by each of the possible return addresses and, when there is a route reaching a command currently being executed in the control flow, determines that the possible return address is a return address and, when there is not the route, determines that the possible return address is not a return address.
    Type: Application
    Filed: June 28, 2018
    Publication date: July 30, 2020
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuto OTSUKI, Yuhei KAWAKOYA, Makoto IWAMURA, Takeo HARIU, Takeshi YAGI
  • Publication number: 20200218803
    Abstract: A call stack acquisition device reproduces, from a memory dump, a memory space of a process to which a thread as a production target of a call stack belongs. Then, the call stack acquisition device acquires execution context of the thread by acquiring, from a virtual memory space, register information of the thread, which is stored in a memory by an OS. In addition, the call stack acquisition device acquires a current stack position and a currently executed function from the acquired execution context. Thereafter, the call stack acquisition device acquires the call stack by tracing return addresses of a series of functions as callers of the currently executed function on the stack from metadata of an execution file of the process including the thread.
    Type: Application
    Filed: July 2, 2018
    Publication date: July 9, 2020
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Yuto OTSUKI, Yuhei KAWAKOYA, Makoto IWAMURA, Takeo HARIU, Takeshi YAGI
  • Publication number: 20190299798
    Abstract: A power supply system includes a first drive motor, a second drive motor, a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter that converts a voltage between the first power line and the second power line, and an ECU that operates the first and second inverters and and the voltage converter and controls charging and discharging of the first and second batteries. In a case where total required power is larger than first outputtable power of the first battery, the ECU discharges a shortage of power from the second battery to the second power line, wherein the shortage of power is obtained by excluding an amount that is output by the first battery from the total required power.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA
  • Publication number: 20190299788
    Abstract: A vehicle power supply system includes a first power line to which a first inverter and a first battery are connected, a second power line to which a second inverter and a second battery are connected, a voltage converter, a charging and discharging control device that operates the inverters and the voltage converter, and a second regenerable electric power acquisition unit that acquires second regenerable electric power. The charging and discharging control device charges the second battery with second regenerative electric power that is power supplied from the second inverter to the second power line during regenerative deceleration, and supplies second surplus regenerative electric power to the first power line in a case where the second regenerative electric power is larger than the second regenerable electric power, wherein the second surplus regenerative electric power is obtained by excluding the second regenerable electric power from the second regenerative electric power.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA
  • Publication number: 20190299796
    Abstract: A vehicle power supply system is provided. The vehicle power supply system includes a first power line connected by a first battery, a second power line to which a second battery is connected, a voltage converter, a charging and discharging control device that controls charging and discharging of the batteries by operating inverters and the voltage converter, and a permission unit that permits or prohibits execution of the electrical pass control for charging the second battery with power discharged from the first battery. The charging and discharging control device executes the electrical pass control when a second SOC is equal to or less than a predetermined value and the electrical pass control is permitted by the permission unit. The permission unit permits the execution of the electrical pass control with the power discharged from the first battery being supplied to a second drive motor through the voltage converter as a condition.
    Type: Application
    Filed: March 29, 2019
    Publication date: October 3, 2019
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Kazuya OYAMA, Yuto OTSUKI, Hirokazu OGUMA