Patents by Inventor Yoshiyuki Hata
Yoshiyuki Hata 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: 20240111003Abstract: A magnetic field measuring apparatus for measuring a to-be-measured magnetic field includes a magnetic impedance element with an impedance change rate that changes depending on the to-be-measured magnetic field, a drive signal providing section and a measurement range setting section. The drive signal providing section provides a drive signal to the magnetic impedance element. A measurement range setting section sets a measurement range in which the to-be-measured magnetic field can be measured. A relationship between the to-be-measured magnetic field and the impedance change rate is arranged to change depending on a frequency of the drive signal. The measurement range setting section is arranged to set the measurement range by setting the frequency.Type: ApplicationFiled: February 1, 2022Publication date: April 4, 2024Applicant: ADVANTEST CORPORATIONInventors: Yoshiyuki HATA, Hisao HORI, Bunichi KAKINUMA
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Patent number: 11852482Abstract: A controller applies a predetermined voltage to a fixed part detection excitation electrode to vibrate a movable part in a second direction and simultaneously applies a predetermined voltage to a fixed part drive electrode to vibrate the movable part in a first direction. The controller acquires, of the movable part, a first resonance frequency along the first direction and a second resonance frequency along the second direction. The controller controls a drive spring adjustment part to adjust a spring constant of the drive spring, such that the first resonance frequency is maintained constant, and controls a detection spring adjustment part to adjust a spring constant of the detection spring such that the second resonance frequency is maintained constant. The controller detects the angular velocity based on a result of synchronously detecting signal from the fixed part detection electrode with the first resonance frequency.Type: GrantFiled: April 27, 2022Date of Patent: December 26, 2023Assignee: DENSO CORPORATIONInventors: Katsuaki Goto, Shota Harada, Takashi Katsumata, Yoshiyuki Hata, Teruhisa Akashi
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Patent number: 11846651Abstract: An electrostatic actuator includes a fixed electrode and a movable electrode arranged to face the fixed electrode. The movable electrode is configured to be displaceable with respect to the fixed electrode and a fixed portion. An attractive force acts between the movable electrode and the fixed portion. In the electrostatic actuator, a non-linear vibration of the movable electrode when a voltage is applied to the fixed electrode and the movable electrode is reduced by the attractive force acting between the movable electrode and the fixed portion.Type: GrantFiled: October 28, 2020Date of Patent: December 19, 2023Assignee: DENSO CORPORATIONInventors: Shota Harada, Keitaro Ito, Tomoya Jomori, Hideo Yamada, Yuuki Inagaki, Teruhisa Akashi, Yoshiyuki Hata
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Publication number: 20230243866Abstract: A multi-axis inertial force sensor includes a mounting material, blocks, and sensors. Each block has a positioning portion that determines its position relative to a contact partner. A pedestal is formed by an assembly of the blocks where the positions are determined relative to each other based on the positioning portion and where inclined surfaces are oriented in different directions. The sensors are respectively arranged on the inclined surfaces of the pedestal so that the main axes are oriented in different directions to detect vector components of inertial force corresponding to the main axes.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Inventors: Teruhisa AKASHI, Shota HARADA, Yoshiyuki HATA
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Publication number: 20230018890Abstract: According to the present invention, a filtering apparatus includes an FIR filter that has multipliers arranged to multiply input digital data having their respective different input time points by respective variable tap coefficients. The variable tap coefficients are each switched from a first tap coefficient to a second tap coefficient sequentially for the input digital data from later to earlier input time points. The first tap coefficient is arranged to cause the FIR filter to serve as a low-pass filter with the cut-off frequency set at a first frequency. The second tap coefficient is arranged to cause the FIR filter to serve as a low-pass filter with the cut-off frequency set at a second frequency different from the first frequency.Type: ApplicationFiled: February 5, 2021Publication date: January 19, 2023Applicant: ADVANTEST CORPORATIONInventors: Tomonori YANAGIDA, Yoshiyuki HATA, Yuji OGATA
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Patent number: 11524414Abstract: A sensor unit includes at least three kinesthetic-sense sensors arranged along a plane, each including a first force-receiving part configured to receive an external force. The sensor unit includes a connecting member including a second force-receiving part configured to receive an external force, configured to transfer the external force received by the second force-receiving part to each first force-receiving part and connecting the first force-receiving parts with each other. The sensor unit includes an output unit configured to output signals corresponding to a pressing force in an orthogonal-axis direction orthogonal to the plane and pressing forces in two axial directions parallel to the plane, respectively, the pressing forces being components of divided forces of the external force received by the second force-receiving part, received by the respective first force-receiving parts through the connecting member.Type: GrantFiled: August 16, 2019Date of Patent: December 13, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro Nakayama, Yoshiyuki Hata, Motohiro Fujiyoshi, Yoshiteru Omura
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Publication number: 20220252398Abstract: A controller applies a predetermined voltage to a fixed part detection excitation electrode to vibrate a movable part in a second direction and simultaneously applies a predetermined voltage to a fixed part drive electrode to vibrate the movable part in a first direction. The controller acquires, of the movable part, a first resonance frequency along the first direction and a second resonance frequency along the second direction. The controller controls a drive spring adjustment part to adjust a spring constant of the drive spring, such that the first resonance frequency is maintained constant, and controls a detection spring adjustment part to adjust a spring constant of the detection spring such that the second resonance frequency is maintained constant. The controller detects the angular velocity based on a result of synchronously detecting signal from the fixed part detection electrode with the first resonance frequency.Type: ApplicationFiled: April 27, 2022Publication date: August 11, 2022Inventors: KATSUAKI GOTO, SHOTA HARADA, TAKASHI KATSUMATA, YOSHIYUKI HATA, TERUHISA AKASHI
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Patent number: 11009414Abstract: A sensor system includes a substrate with a reference plane, a plurality of kinesthetic-sense sensors disposed on the substrate, each of the plurality of kinesthetic-sense sensors being configured to output signals of three axial directions corresponding to an orthogonal-axis direction orthogonal to the reference plane and two axial directions parallel to the reference plane, respectively, according to an external force from an object received at a force receiving part, a control unit configured to determine whether or not a value of each of the signals is larger than a predetermined threshold, and calculate a pressing force in the orthogonal-axis direction or a moment around the orthogonal axis received from the object based on a result of the determination, and an output unit configured to output a result of the calculation.Type: GrantFiled: August 27, 2019Date of Patent: May 18, 2021Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takahiro Nakayama, Motohiro Fujiyoshi, Yoshiyuki Hata, Yoshiteru Omura
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Patent number: 10960551Abstract: A sensor system according to the present disclosure includes a substrate, a force sensor, a calculation unit, and an output part. The substrate includes a reference plane and an inclined surface. The force sensor is provided on the inclined surface and outputs signals in three-axis directions that correspond to an orthogonal axis direction that is orthogonal to the inclined surface and two-axis directions that are parallel to the reference plane. The calculation unit calculates a pressing force in each coordinate axis direction of rectangular coordinates formed of an axis vertical to the reference plane and two axes parallel to the reference plane and moments around the respective coordinate axes of the rectangular coordinates. The output part outputs calculation results.Type: GrantFiled: November 25, 2019Date of Patent: March 30, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro Nakayama, Motohiro Fujiyoshi, Yoshiyuki Hata, Yoshiteru Omura
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Publication number: 20210041475Abstract: An electrostatic actuator includes a fixed electrode and a movable electrode arranged to face the fixed electrode. The movable electrode is configured to be displaceable with respect to the fixed electrode and a fixed portion. An attractive force acts between the movable electrode and the fixed portion. In the electrostatic actuator, a non-linear vibration of the movable electrode when a voltage is applied to the fixed electrode and the movable electrode is reduced by the attractive force acting between the movable electrode and the fixed portion.Type: ApplicationFiled: October 28, 2020Publication date: February 11, 2021Inventors: Shota HARADA, Keitaro ITO, Tomoya JOMORI, Hideo YAMADA, Yuuki INAGAKI, Teruhisa AKASHI, Yoshiyuki HATA
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Patent number: 10914794Abstract: A measuring apparatus that measures a measurement target amount generated from a measurement target, includes an additional amount generating section, a sensor, and a deriving section. The additional amount generating section generates an additional amount to be added to the measurement target amount. The sensor measures a composite amount of the measurement target amount added with the additional amount. The deriving section derives the measurement target amount from an output of the sensor. The additional amount is a pulse. The pulse has an amplitude higher than the absolute value of the maximum of the measurement target amount. The maximum of the pulse is zero. The pulse has a frequency high enough to ignore the 1/f noise. The deriving section detects the output value of the sensor to derive the measurement target amount.Type: GrantFiled: January 16, 2019Date of Patent: February 9, 2021Assignee: ADVANTEST CORPORATIONInventor: Yoshiyuki Hata
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Publication number: 20200171672Abstract: A sensor system according to the present disclosure includes a substrate, a force sensor, a calculation unit, and an output part. The substrate includes a reference plane and an inclined surface. The force sensor is provided on the inclined surface and outputs signals in three-axis directions that correspond to an orthogonal axis direction that is orthogonal to the inclined surface and two-axis directions that are parallel to the reference plane. The calculation unit calculates a pressing force in each coordinate axis direction of rectangular coordinates formed of an axis vertical to the reference plane and two axes parallel to the reference plane and moments around the respective coordinate axes of the rectangular coordinates. The output part outputs calculation results.Type: ApplicationFiled: November 25, 2019Publication date: June 4, 2020Applicant: Toyota Jidosha Kabushiki KaishaInventors: Takahiro Nakayama, Motohiro Fujiyoshi, Yoshiyuki Hata, Yoshiteru Omura
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Publication number: 20200070354Abstract: A sensor unit 10 includes at least three kinesthetic-sense sensors 11 arranged along a plane, each including a first force-receiving part 111 configured to receive an external force. The sensor unit 10 includes a connecting member 12 including a second force-receiving part 13 configured to receive an external force, configured to transfer the external force received by the second force-receiving part 13 to each first force-receiving part 111 and connecting the first force-receiving parts 111 with each other. The sensor unit 10 includes an output unit 15 configured to output signals corresponding to a pressing force in an orthogonal-axis direction orthogonal to the plane and pressing forces in two axial directions parallel to the plane, respectively, the pressing forces being components of divided forces of the external force received by the second force-receiving part 13, received by the respective first force-receiving parts 111 through the connecting member 12.Type: ApplicationFiled: August 16, 2019Publication date: March 5, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro NAKAYAMA, Yoshiyuki HATA, Motohiro FUJIYOSHI, Yoshiteru OMURA
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Publication number: 20200072691Abstract: A sensor system according to the present disclosure includes a substrate with a reference plane, a plurality of kinesthetic-sense sensors disposed on the substrate, each of the plurality of kinesthetic-sense sensors being configured to output signals of three axial directions corresponding to an orthogonal-axis direction orthogonal to the reference plane and two axial directions parallel to the reference plane, respectively, according to an external force from an object received at a force receiving part, a control unit configured to determine whether or not a value of each of the signals is larger than a predetermined threshold, and calculate a pressing force in the orthogonal-axis direction or a moment around the orthogonal axis received from the object based on a result of the determination, and an output unit configured to output a result of the calculation.Type: ApplicationFiled: August 27, 2019Publication date: March 5, 2020Inventors: Takahiro Nakayama, Motohiro Fujiyoshi, Yoshiyuki Hata, Yoshiteru Omura
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Patent number: 10575738Abstract: In a magnetic field measurement apparatus and a magnetic field measurement method provided herein, a magnetic field from an object is measured by a magnetic sensor group including a plurality of magnetic sensors. Then, an estimated value of a common noise component included in observed quantities of the magnetic sensors of all the channels of the magnetic sensor group is obtained as an external magnetic noise component. Finally the magnetic signal from the object is calculated by subtracting the estimated value from the observed quantity of each of the magnetic sensors.Type: GrantFiled: July 10, 2017Date of Patent: March 3, 2020Assignee: ADVANTEST COPORATIONInventors: Takeshi Tanaka, Yuji Ogata, Yoshiyuki Hata, Toshiaki Hayakawa, Tomoaki Ueda
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Patent number: 10444298Abstract: There is provided a magnetic noise rejection apparatus which includes: a plurality of cancellation coils arranged near a target object; a plurality of magnetic sensors disposed inside the respective cancellation coils; an adder circuit configured to take a sum of outputs of the plurality of magnetic sensors; and a feedback control circuit configured to supply the cancellation coils with such a common feedback drive current that the sum of the outputs of the magnetic sensors is equal to a sum of outputs of the magnetic sensors under a zero magnetic field.Type: GrantFiled: December 22, 2016Date of Patent: October 15, 2019Assignee: ADVANTEST CORPORATIONInventors: Yoshiyuki Hata, Yuji Ogata, Takeshi Tanaka, Toshiaki Hayakawa
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Publication number: 20190227128Abstract: A measuring apparatus that measures a measurement target amount generated from a measurement target, includes an additional amount generating section, a sensor, and a deriving section. The additional amount generating section generates an additional amount to be added to the measurement target amount. The sensor measures a composite amount of the measurement target amount added with the additional amount. The deriving section derives the measurement target amount from an output of the sensor. The additional amount is a pulse. The pulse has an amplitude higher than the absolute value of the maximum of the measurement target amount. The maximum of the pulse is zero. The pulse has a frequency high enough to ignore the 1/f noise. The deriving section detects the output value of the sensor to derive the measurement target amount.Type: ApplicationFiled: January 16, 2019Publication date: July 25, 2019Applicant: ADVANTEST CORPORATIONInventor: Yoshiyuki HATA
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Publication number: 20180014738Abstract: In a magnetic field measurement apparatus and a magnetic field measurement method provided herein, a magnetic field from an object is measured by a magnetic sensor group including a plurality of magnetic sensors. Then, an estimated value of a common noise component included in observed quantities of the magnetic sensors of all the channels of the magnetic sensor group is obtained as an external magnetic noise component. Finally the magnetic signal from the object is calculated by subtracting the estimated value from the observed quantity of each of the magnetic sensors.Type: ApplicationFiled: July 10, 2017Publication date: January 18, 2018Inventors: Takeshi Tanaka, Yuji Ogata, Yoshiyuki Hata, Toshiaki Hayakawa, Tomoaki Ueda
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Publication number: 20170219661Abstract: There is provided a magnetic noise rejection apparatus which includes: a plurality of cancellation coils arranged near a target object; a plurality of magnetic sensors disposed inside the respective cancellation coils; an adder circuit configured to take a sum of outputs of the plurality of magnetic sensors; and a feedback control circuit configured to supply the cancellation coils with such a common feedback drive current that the sum of the outputs of the magnetic sensors is equal to a sum of outputs of the magnetic sensors under a zero magnetic field.Type: ApplicationFiled: December 22, 2016Publication date: August 3, 2017Inventors: Yoshiyuki Hata, Yuji Ogata, Takeshi Tanaka, Toshiaki Hayakawa
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Patent number: 9584114Abstract: A semiconductor switch is configured to conduct or cutoff a signal path from its first terminal to its second terminal. An enhancement-type first transistor is arranged between the first terminal and the second terminal. A first bias circuit is connected to apply a gate voltage VG that corresponds to a control signal VCNT to the gate of the first transistor when the power supply voltages VDD and VSS are supplied. A second bias circuit is connected such that a voltage that corresponds to the lower voltage of the voltages at the first terminal and the second terminal is applied to the gate of the first transistor when the power supply voltages VDD and VSS are not supplied.Type: GrantFiled: June 3, 2015Date of Patent: February 28, 2017Assignee: ADVANTEST CORPORATIONInventors: Yoshiyuki Hata, Taku Sato, Masahiko Takikawa