Patents by Inventor Takehiro Hara

Takehiro Hara 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).

  • Publication number: 20240097586
    Abstract: According to one embodiment, a motor control device includes a sensor, a detection circuit, and a controller. The sensor is at a position between a winding of a first phase and a winding of a second phase in a motor. The motor includes windings of three phases. The detection circuit detects when a magnitude relationship between an induced voltage amplitude of the first phase and an induced voltage amplitude of the second phase is switched. The controller performs based on a sensor signal from the sensor and a detection result sensor from the detection circuit.
    Type: Application
    Filed: February 22, 2023
    Publication date: March 21, 2024
    Inventor: Takehiro HARA
  • Patent number: 11437941
    Abstract: According to one embodiment, there is provided a motor control device including an acquisition unit, an AD conversion unit, a calculation unit and a drive control unit. The acquisition unit acquires an analog signal indicating a rotational position of a motor. The AD conversion unit AD-converts the analog signal to generate a digital value. The calculation unit estimates a slope of a waveform of the analog signal by using a plurality of the digital values and obtains an intersection timing at which a straight line corresponding to the estimated slope intersects with a threshold. The drive control unit controls driving of the motor according to a rotation cycle obtained from a plurality of the intersection timings.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: September 6, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
    Inventors: Katsutoshi Moriyama, Takehiro Hara
  • Publication number: 20210297019
    Abstract: According to one embodiment, there is provided a motor control device including an acquisition unit, an AD conversion unit, a calculation unit and a drive control unit. The acquisition unit acquires an analog signal indicating a rotational position of a motor. The AD conversion unit AD-converts the analog signal to generate a digital value. The calculation unit estimates a slope of a waveform of the analog signal by using a plurality of the digital values and obtains an intersection timing at which a straight line corresponding to the estimated slope intersects with a threshold. The drive control unit controls driving of the motor according to a rotation cycle obtained from a plurality of the intersection timings.
    Type: Application
    Filed: September 10, 2020
    Publication date: September 23, 2021
    Inventors: Katsutoshi Moriyama, Takehiro Hara
  • Patent number: 10771454
    Abstract: An information processing system comprises a terminal device; an end server; and an intermediate server connected to the terminal device and the end server via a network. The intermediate server includes a communication device that communicates with the terminal device and the end server; a memory device that stores an ID correspondence table that registers a combination of first login information and second login information, the first login information being for logging in to the intermediate server, the second login information being for logging in to the end server; and a controller, when the controller executes an information processing program, the controller operating as an ID issue receiving unit, an end server accessing unit, an ID issuing unit, and an end server access receiving unit.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: September 8, 2020
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Takehiro Hara
  • Publication number: 20190036902
    Abstract: An information processing method includes: by an intermediate server, receiving an issue application by using a second login information, the issue application being an application for issuing a first login information, the first login information being for logging in to the intermediate server, the second login information being for logging in to the end server; issuing the first login information on a basis of the issue application; registering a combination of the issued first login information and the second login information provided from the terminal device in the ID correspondence table; receiving an access request from the terminal device, the access request requesting to access the end server by using the first login information and the second login information; and if a combination of the first login information and the second login information in the access request is registered in the ID correspondence table, accessing the end server.
    Type: Application
    Filed: July 27, 2018
    Publication date: January 31, 2019
    Inventor: TAKEHIRO HARA
  • Patent number: 8810184
    Abstract: The characteristic is defined by a characteristic line that connects a lowest point at which the duty of the PWM signal is a minimum value and the rotation command signal is a minimum rotation command signal, and a highest point at which the duty of the PWM signal is a maximum value and the rotation command signal is a maximum rotation command signal. The duty calculating circuit updates the characteristic so that the characteristic line passes through a first control point at which the duty of the PWM signal is a value set based on the first setting signal and the rotation command signal is a first rotation command signal between the minimum rotation command signal and the maximum rotation command signal.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: August 19, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toshiaki Ohgushi, Takehiro Hara
  • Patent number: 8598825
    Abstract: According to an embodiment, a lead angle control circuit is configured to control a lead angle of a motor drive signal driving a motor. The lead angle control circuit includes a control signal generating section, an upper limit voltage limit section and a lead angle data generating section. The lead angle data generating section is configured to generate a relationship line between lead angle data representing the lead angle and a lead angle control signal, and configured to generate the lead angle data based on the relationship line and the lead angle control signal. The relationship line reaches an upper limit point from a lower limit point through a changing point. In the changing point, the lead angle control signal is a changing point voltage, and the lead angle data represents the lead angle corresponding to a lead angle setting voltage.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: December 3, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shen Wang, Takehiro Hara
  • Publication number: 20130147413
    Abstract: The characteristic is defined by a characteristic line that connects a lowest point at which the duty of the PWM signal is a minimum value and the rotation command signal is a minimum rotation command signal, and a highest point at which the duty of the PWM signal is a maximum value and the rotation command signal is a maximum rotation command signal. The duty calculating circuit updates the characteristic so that the characteristic line passes through a first control point at which the duty of the PWM signal is a value set based on the first setting signal and the rotation command signal is a first rotation command signal between the minimum rotation command signal and the maximum rotation command signal.
    Type: Application
    Filed: February 10, 2012
    Publication date: June 13, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toshiaki Ohgushi, Takehiro Hara
  • Publication number: 20130076282
    Abstract: According to an embodiment, a lead angle control circuit is configured to control a lead angle of a motor drive signal driving a motor. The lead angle control circuit includes a control signal generating section, an upper limit voltage limit section and a lead angle data generating section. The lead angle data generating section is configured to generate a relationship line between lead angle data representing the lead angle and a lead angle control signal, and configured to generate the lead angle data based on the relationship line and the lead angle control signal. The relationship line reaches an upper limit point from a lower limit point through a changing point. In the changing point, the lead angle control signal is a changing point voltage, and the lead angle data represents the lead angle corresponding to a lead angle setting voltage.
    Type: Application
    Filed: February 9, 2012
    Publication date: March 28, 2013
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shen WANG, Takehiro Hara
  • Patent number: 8374132
    Abstract: A base station device according to the present invention includes: a first reception weight calculator 122 configured to calculate weight of each antenna element of an array antenna 114 to be used in communications with a first mobile station device by using a reference signal transmitted from the first mobile station device; and a second reception weight calculator 124 configured to calculate weight of each antenna element of the array antenna 114 to be used in communications with a second mobile station device, which is different from, the first mobile station device of the multiple mobile station devices, the second reception weight calculator 124 calculating the weight so that null can be directed to an arriving direction of the reference signal transmitted from the first mobile station device, the arriving direction being determined on the basis of weight calculated by the first reception weight calculator 122.
    Type: Grant
    Filed: May 28, 2007
    Date of Patent: February 12, 2013
    Assignee: Kyocera Corporation
    Inventors: Takanori Miura, Takehiro Hara, Toru Sahara
  • Patent number: 8212515
    Abstract: A microcomputer which obtains a rotor position signal from a biphase signal delivered by a resolver mounted on an electric motor according to a rotation phase of a rotor relative to a stator, thereby controlling the motor based on the rotor position signal. The microcomputer includes a digital signal converter which is configured by hardware and converts the biphase signal delivered from the resolver into a digital data position signal, the digital signal converter being mounted on a single chip.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: July 3, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yukihisa Hasegawa, Takehiro Hara
  • Publication number: 20110230221
    Abstract: Provided is a base station device capable of, when there is no downlink communication data to be transmitted at a given frequency while performing communication at the given frequency, preventing a neighboring base station device from starting communication that uses the given frequency. The base station device (101) provided with a plurality of antennas includes; a wireless control section (104) for recognizing presence of the downlink communication data with respect to a mobile station device; and a transmission processing section (106) for, when the downlink communication data is present, transmitting the downlink communication data to the mobile station device by using the plurality of antennas, and, when the downlink communication data is not present, performing omni transmission processing in which dummy data is transmitted omnidirectionally at least once in a given period of time through the plurality of antennas at the same frequency as is used for the downlink communication data.
    Type: Application
    Filed: November 19, 2009
    Publication date: September 22, 2011
    Applicant: KYOCERA CORPORATION
    Inventor: Takehiro Hara
  • Publication number: 20100157909
    Abstract: A base station device according to the present invention includes: a first reception weight calculator 122 configured to calculate weight, of each antenna element of an array antenna 114 to be used in communications with a first mobile station device by using a reference signal transmitted from the first mobile station device; and a second reception weight calculator 124 configured to calculate weight of each antenna element of the array antenna 114 to be used in communications with a second mobile station device, which is different from, the first mobile station device of the multiple mobile station devices, the second reception weight calculator 124 calculating the weight so that null can be directed to an arriving direction of the reference signal transmitted from the first mobile station device, the arriving direction being determined on the basis of weight calculated by the first reception weight calculator 122.
    Type: Application
    Filed: May 28, 2007
    Publication date: June 24, 2010
    Applicant: KYOCERA CORPORATION
    Inventors: Takanori Miura, Takehiro Hara, Toru Sahara
  • Publication number: 20100007294
    Abstract: A microcomputer which obtains a rotor position signal from a biphase signal delivered by a resolver mounted on an electric motor according to a rotation phase of a rotor relative to a stator, thereby controlling the motor based on the rotor position signal. The microcomputer includes a digital signal converter which is configured by hardware and converts the biphase signal delivered from the resolver into a digital data position signal, the digital signal converter being mounted on a single chip.
    Type: Application
    Filed: July 13, 2009
    Publication date: January 14, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yukihisa Hasegawa, Takehiro Hara
  • Patent number: 7021497
    Abstract: A device for compressing flexible tubes containing pastes, creams and the like, provided with a receptacle for storing dental floss, making it easy to handle flexible tubes (2) for storing pasty or creamy products, thus providing the full utilization thereof thanks to a differentiated construction and design, wherein a device (1) inserted through its center gap (6) into the lower part of the flexible tube (2) and manually pushed toward the nozzle runs along and compresses the flexible body (2) to expel the product, said device (1) also being provided with a bevel (5) at one of the ends of its upper side, so that the handling thereof may cause a light displacement as it reaches the point wherein there is an accumulation of the product so that the device (1) is locked on the side edges of the flexible tube (2) after the product is expelled, and, because of such displacement, it is prevented from being pushed back, therefore becoming self-locked so that the next time the user uses same he/she will start dispensi
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: April 4, 2006
    Inventor: Takehiro Hara
  • Publication number: 20050029278
    Abstract: A device for compressing flexible tubes containing pastes, creams and the like, provided with a receptacle for storing dental floss, making it easy to handle flexible tubes (2) for storing pasty or creamy products, thus providing the full utilization thereof thanks to a differentiated construction and design, wherein a device (1) inserted through its center gap (6) into the lower part of the flexible tube (2) and manually pushed toward the nozzle runs along and compresses the flexible body (2) to expel the product, said device (1) also being provided with a bevel (5) at one of the ends of its upper side, so that the handling thereof may cause a light displacement as it reaches the point wherein there is an accumulation of the product so that the device (1) is locked on the side edges of the flexible tube (2) after the product is expelled, and, because of such displacement, it is prevented from being pushed back, therefore becoming self-locked so that the next time the user uses same he/she will start dispensi
    Type: Application
    Filed: July 21, 2003
    Publication date: February 10, 2005
    Inventor: Takehiro Hara
  • Patent number: D506657
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: June 28, 2005
    Inventor: Takehiro Hara