Patents by Inventor Yasushi Otsuka
Yasushi Otsuka 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: 11929700Abstract: An electric motor control device that can accurately calculate the rotating speed of an electric motor. The electric motor control device includes a speed calculating unit configured to receive, from a position detector that detects a rotational position of an electric motor and outputs a position detection signal including a periodic error determined according to the rotational position, an input of the position detection signal, receive, from a time detector that outputs a position change time signal obtained by detecting a time period in which the position detection signal output from the position detector changes, an input of the position change time signal, and calculate rotating speed of the electric motor based on the position detection signal and the position change time signal. Further, there is a speed correcting unit for correcting a periodic speed error determined according to the rotational position of the electric motor.Type: GrantFiled: April 11, 2019Date of Patent: March 12, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshiaki Kato, Yasushi Otsuka
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Publication number: 20240059522Abstract: A third instruction determination unit determines a current instruction on the basis of a first current instruction determined by a first instruction determination unit (23) and a second current instruction determined by a second instruction determination unit (24). A brake control unit (25) controls a brake device (6) on the basis of the current instruction. The second instruction determination unit (24) determines the second current instruction so that the value of a current indicated by the current instruction determined by the third instruction determination unit increases stepwise when a brake switch (7) ceases to detect that the brake device (6) is in a non-braking state.Type: ApplicationFiled: March 29, 2021Publication date: February 22, 2024Applicant: Mitsubishi Electric CorporationInventors: Yasushi OTSUKA, Hisahiro WADAYAMA
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Publication number: 20230275108Abstract: A solid-state imaging apparatus is provided that, in a configuration including a mold resin portion formed around an image sensor and cover glass, enables potential burrs of the mold resin on a cover glass surface to be prevented without the need for a dedicated mold, the cover glass having a light blocking effect, and a method for manufacturing the solid-state imaging apparatus and electronic equipment are also provided. The solid-state imaging apparatus includes a substrate, an image sensor provided on the substrate, a transparent member provided on the image sensor via a support portion, and a mold resin portion formed around the image sensor and the transparent member on the substrate, and a front surface, a side surface, or a back surface of the transparent member is provided with a groove portion in a region outside a light receiving area of the image sensor.Type: ApplicationFiled: July 26, 2021Publication date: August 31, 2023Inventors: YASUSHI OTSUKA, WENSHUANG DONG, SHUMPEI AOKI, MITSUHITO KANATAKE
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Publication number: 20220352227Abstract: A drop in image quality is suppressed while inspecting for misalignment in a semiconductor package in which a solid-state image sensor is connected to a substrate by wires. The semiconductor package includes a solid-state image sensor and a light-blocking film. In the semiconductor package, the solid-state image sensor, which is a rectangle, is provided with a pixel array unit. Additionally, in the semiconductor package, a light guide part and window parts are provided in the light-blocking film. The light guide part guides incident light to the pixel array unit. The window parts are provided in positions corresponding to each of a plurality of corners of the rectangle.Type: ApplicationFiled: April 28, 2020Publication date: November 3, 2022Inventors: YASUSHI OTSUKA, DAIGO SAKAMOTO
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Publication number: 20220208718Abstract: In a semiconductor package in which a semiconductor element is connected to a substrate, the semiconductor element is prevented from being warped. The semiconductor package includes a substrate, the semiconductor element, a bonding portion, and protrusions. First ends of wires are connected to a front surface of the substrate. Second ends of wires are connected to one surface of opposite surfaces of the semiconductor element. The bonding portion bonds a part of the other surface of the opposite surfaces of the semiconductor element and the front surface of the substrate. The protrusions protrude from the front surface of the substrate to a remaining part of the other surface of the opposite surfaces of the semiconductor element.Type: ApplicationFiled: June 17, 2020Publication date: June 30, 2022Inventor: YASUSHI OTSUKA
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Publication number: 20220135367Abstract: Proposed is an elevator control device in which an unbalance torque estimation unit configured to estimate an unbalance torque in a motor is implemented in accordance with such a new finding that the unbalance torque can be estimated based on a first time period from an output change of a brake state command signal for switching an operation state of a brake from a braking state to a releasing state to a time when the motor starts a rotating operation along with release of the brake, and on a positive or negative sign of a velocity signal obtained when the motor starts rotation. As a result, as compared to the related art, a smaller calculation load can be achieved. Further, the elevator control device can have a sufficient responsiveness for suppressing an influence of the unbalance torque.Type: ApplicationFiled: March 29, 2019Publication date: May 5, 2022Applicant: Mitsubishi Electric CorporationInventors: Tetsuya KIMURA, Eiji YOKOYAMA, Toshiyuki BABA, Yasushi OTSUKA
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Publication number: 20220029563Abstract: An electric motor control device that can accurately calculate the rotating speed of an electric motor. The electric motor control device includes a speed calculating unit configured to receive, from a position detector that detects a rotational position of an electric motor and outputs a position detection signal including a periodic error determined according to the rotational position, an input of the position detection signal, receive, from a time detector that outputs a position change time signal obtained by detecting a time period in which the position detection signal output from the position detector changes, an input of the position change time signal, and calculate rotating speed of the electric motor based on the position detection signal and the position change time signal. Further, there is a speed correcting unit for correcting a periodic speed error determined according to the rotational position of the electric motor.Type: ApplicationFiled: April 11, 2019Publication date: January 27, 2022Applicant: Mitsubishi Electric CorporationInventors: Toshiaki KATO, Yasushi OTSUKA
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Patent number: 11101760Abstract: Provided is an electric motor control device including: a speed controller configured to calculate an operation amount directed to an electric motor, and output the operation amount; a first filter configured to use the operation amount as an input to calculate a first correction amount in accordance with a first transfer function from the operation amount to the first correction amount, and output the first correction amount; a second filter configured to use a rotational speed as an input to calculate a second correction amount in accordance with the second transfer function from the rotational speed to the second correction amount, and output the second correction amount; and a control command calculator configured to add the first correction amount and the second correction amount to one another, to thereby calculate a control command, and output the control command.Type: GrantFiled: December 20, 2017Date of Patent: August 24, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tetsuya Kimura, Yasushi Otsuka, Eiji Yokoyama
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Publication number: 20210194402Abstract: Provided is an electric motor control device including: a speed controller configured to calculate an operation amount directed to an electric motor, and output the operation amount; a first filter configured to use the operation amount as an input to calculate a first correction amount in accordance with a first transfer function from the operation amount to the first correction amount, and output the first correction amount; a second filter configured to use a rotational speed as an input to calculate a second correction amount in accordance with the second transfer function from the rotational speed to the second correction amount, and output the second correction amount; and a control command calculator configured to add the first correction amount and the second correction amount to one another, to thereby calculate a control command, and output the control command.Type: ApplicationFiled: December 20, 2017Publication date: June 24, 2021Applicant: Mitsubishi Electric CorporationInventors: Tetsuya KIMURA, Yasushi OTSUKA, Eiji YOKOYAMA
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Patent number: 9809419Abstract: In an elevator apparatus, a plurality of storage media are arranged in a hoistway so as to be spaced from one another in a hoisting direction of a car. In the car, reading device that reads information stored in the storage media is mounted. The storage media are arranged in the hoisting direction at intervals different from one another. A safety monitor is configured to: execute an operation for detecting two storage media; measure an interval between the detected storage media based on a signal from movement detector; compare the measured interval between the storage media with stored intervals of the storage media: and to grasp the position of the car by using a result of the comparison and the information of the storage media, when a position of the car cannot be grasped.Type: GrantFiled: November 13, 2013Date of Patent: November 7, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yasushi Otsuka, Takuo Kugiya
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Patent number: 9676591Abstract: In an elevator apparatus, a reference position switch is a usually closed switched that is opened by a car moving to a reference position. A detected body is installed inside a hoistway. A detected body detector that detects the detected body is disposed on the car. A car position detecting portion stores as detected position information of the detected body an amount of movement of the car from where the detected body is detected until the car is detected by the reference position switch by a learning run that is implemented in advance. After completion of the learning run, the car position detecting portion detects the car position based on information from the detected body detector, the stored detected position information, and information from a movement detector that outputs a signal that corresponds to an amount of movement of the car.Type: GrantFiled: September 20, 2013Date of Patent: June 13, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hirokazu Banno, Takuo Kugiya, Yasushi Otsuka
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Publication number: 20160214832Abstract: In an elevator apparatus, a reference position switch is a usually closed switched that is opened by a car moving to a reference position. A detected body is installed inside a hoistway. A detected body detector that detects the detected body is disposed on the car. A car position detecting portion stores as detected position information of the detected body an amount of movement of the car from where the detected body is detected until the car is detected by the reference position switch by a learning run that is implemented in advance. After completion of the learning run, the car position detecting portion detects the car position based on information from the detected body detector, the stored detected position information, and information from a movement detector that outputs a signal that corresponds to an amount of movement of the car.Type: ApplicationFiled: September 20, 2013Publication date: July 28, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hirokazu BANNO, Takuo KUGIYA, Yasushi OTSUKA
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Publication number: 20150336768Abstract: In an elevator apparatus, a plurality of storage media are arranged in a hoistway so as to be spaced from one another in a hoisting direction of a car. In the car, reading device that reads information stored in the storage media is mounted. The storage media are arranged in the hoisting direction at intervals different from one another. A safety monitor is configured to: execute an operation for detecting two storage media; measure an interval between the detected storage media based on a signal from movement detector; compare the measured interval between the storage media with stored intervals of the storage media: and to grasp the position of the car by using a result of the comparison and the information of the storage media, when a position of the car cannot be grasped.Type: ApplicationFiled: November 13, 2013Publication date: November 26, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yasushi OTSUKA, Takuo KUGIYA
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Patent number: 6818986Abstract: An IC (semiconductor device) comprises a package substrate provided on its face side with a plurality of wiring patterns such as electrode lands and wirings and provided on its back side with a plurality of electrode bumps corresponding to the wiring patterns, an IC chip mounted on the face side of the package substrate in a face-up manner, a sealing resin sealing the IC chip, and an indication provided on the back side of the package substrate for indicating the position of the IC chip. A method of inspecting a failure reason in the case of some failure of the IC chip comprises the steps of forming an opening by removing from the back side the package substrate in the region surrounded by the indication, mounting the IC chip on a test substrate, passing an electric current to the IC chip for operation, and inspecting and analyzing the reason of failure by a photo-emission analyzing method.Type: GrantFiled: October 23, 2001Date of Patent: November 16, 2004Assignee: Sony CorporationInventors: Yuichiro Ikenaga, Yasushi Otsuka
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Publication number: 20020063250Abstract: An IC (semiconductor device) comprises a package substrate provided on its face side with a plurality of wiring patterns such as electrode lands and wirings and provided on its back side with a plurality of electrode bumps corresponding to the wiring patterns, an IC chip mounted on the face side of the package substrate in a face-up manner, a sealing resin sealing the IC chip, and an indication provided on the back side of the package substrate for indicating the position of the IC chip. A method of inspecting a failure reason in the case of some failure of the IC chip comprises the steps of forming an opening by removing from the back side the package substrate in the region surrounded by the indication, mounting the IC chip on a test substrate, passing an electric current to the IC chip for operation, and inspecting and analyzing the reason of failure by a photo-emission analyzing method.Type: ApplicationFiled: October 23, 2001Publication date: May 30, 2002Inventors: Yuichiro Ikenaga, Yasushi Otsuka
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Patent number: 6093970Abstract: An improved semiconductor device and method of manufacturing employs interconnecting films on film circuit as ground lines which extend to the periphery of the film circuit where there is a further connection to a conductive reinforcing plate 25. Advantageously, the conductive reinforcing plate reduces electrical noise from interfering with the semiconductor device and prevents the semiconductor device from radiating undesired signals. The interconnecting films also reduce cross-talk between signal lines of the semiconductor device.Type: GrantFiled: July 27, 1999Date of Patent: July 25, 2000Assignee: Sony CorporationInventors: Kenji Ohsawa, Makoto Ito, Yasushi Otsuka, Kazuhiro Sato
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Patent number: 5945741Abstract: A semiconductor device employs interconnecting films on film circuit as ground lines which extend to the periphery of the film circuit where there is a further connection to a conductive reinforcing plate. Advantageously the conductive reinforcing plate reduces electrical noise from interfering with the semiconductor device and prevents the semiconductor device from radiating undesired signals. The interconnecting films also reduce cross-talk between signal lines of the semiconductor device.Type: GrantFiled: March 5, 1997Date of Patent: August 31, 1999Assignee: Sony CorporationInventors: Kenji Ohsawa, Makoto Ito, Yasushi Otsuka, Kazuhiro Sato
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Patent number: 5444603Abstract: A push-on fixer for screw engagement in which a plurality of radially extending notches are formed in a circumferential edge region of a circular hole formed at a center portion of a thin discoid body, and a plurality of inner plate spring pieces are formed on the circumferential edge region of the circular hole so as to allow insertion of an aiming screw into the circular hole and so as to clamp the inserted aiming screw, is provided. An aiming screw is inserted into an aiming screw insertion hole of a lamp body of an automobile head lamp, and is retained so as to be prevented from coming out of the lamp body. A plurality of outer plate spring pieces which press against a push-on fixer abutment surface of the lamp body and a plurality of clamp release claws for releasing the clamping of the screw by the screw clamp plate spring pieces are formed on the outer circumferential edge of the thin discoid body.Type: GrantFiled: July 14, 1994Date of Patent: August 22, 1995Assignee: Koito Manufacturing Co., Ltd.Inventors: Yasushi Otsuka, Masayoshi Unno, Hideki Ohashi
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Patent number: 5379644Abstract: A strain or stress gauge 1A is presented for measuring the stress of a structure or a member. The gauge 1A comprises a bundle of electric conductive fibers 3, and a pair of terminals 4, for measuring an electric resistance of the bundle of electric conductive fibers provided on both ends thereof. It presents a strain or stress gauge having a simple structure, which can be produced inexpensively, and its size can be chosen freely. It is possible to know not only the state of a strain or stress but also the history of stress in a structure or a structural member which, by the characteristics of a specific curve relating the stress/strain relationship of the gauge.Type: GrantFiled: July 24, 1992Date of Patent: January 10, 1995Assignees: Shimizu Costruction Co., Ltd., Hiroaki YanagidaInventors: Hiroaki Yanagida, Masaru Miyayama, Norio Muto, Minoru Sugita, Teruyuki Nakatsuji, Yasushi Otsuka
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Patent number: 4951178Abstract: A headlight for a motor vehicle which can selectively be used as an ordinary headlight or a fog light. A yellow cover is slidably mounted slidable along the axial direction of the bulb of the headlight so that it can be moved between a position where is surrounds the bulb, in which light emitted by the bulb must pass through the cover before reaching the reflector, and a position where the light from the bulb can proceed directly to the reflector without passing through the cover.Type: GrantFiled: September 29, 1989Date of Patent: August 21, 1990Assignee: Koito Manfacturing Co., Ltd.Inventors: Katsutada Shirai, Yasushi Otsuka