Patents by Inventor Kouichi SAKITA
Kouichi SAKITA 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: 20230305640Abstract: Provided is an input device capable of facilitating an operation for inputting, a command such as characters. The input device includes an operation unit of which an operation amount is variable and a control unit. The control unit selects one command group among a plurality of command groups and decides on a command on the basis of the command group selected and the operation amount of the operation unit. The control unit switches the command group selected when the operation amount of the operation unit is in a prescribed range.Type: ApplicationFiled: January 30, 2023Publication date: September 28, 2023Applicant: TDK CORPORATIONInventors: Kazunori OSHIMA, Masayuki SUGASAWA, Tatsuya HAYASHI, Kouichi SAKITA
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Patent number: 11742703Abstract: A foreign substance detection device for limiting deterioration in accuracy of foreign substance detection even if a foreign substance detection region changes. The device includes an imaging device configured to keep a region for detecting a foreign substance in an imaging range of the imaging device and a determination unit configured to determine a presence or absence of the foreign substance on the basis of a result of comparing a captured image captured by the imaging device with a reference image free of the foreign substance in the imaging range. The determination unit determines that the captured image is free of a foreign substance on the basis of the result of comparing and a prescribed first condition is satisfied, the unit executes an update process of replacing the reference image with the captured image for which the unit determines freedom of a foreign substance as an updated reference image.Type: GrantFiled: December 14, 2021Date of Patent: August 29, 2023Assignee: TDK CORPORATIONInventors: Kouichi Sakita, Masayuki Yamashima, Ryo Shiozaki, Kazuki Yoneda
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Publication number: 20220209578Abstract: A wireless power receiving device that receives AC power from a power transmission coil included in a wireless power transmission device. The wireless power receiving device includes a power receiving coil configured to receive AC power from a power transmission coil, a power receiving-side imaging unit having an auto-focus function, and a control unit configured to cause the power receiving-side imaging unit to image a range able to be imaged by the power receiving-side imaging unit and, in a case in which a marker located at a predetermined first position on an outer surface of the wireless power transmission device is imaged by the power receiving-side imaging unit, to output relative distance information representing relative distance of the power receiving coil with respect to the power transmission coil based on a detected distance using the auto-focus function used by the power receiving-side imaging unit for imaging the marker.Type: ApplicationFiled: December 20, 2021Publication date: June 30, 2022Applicant: TDK CORPORATIONInventors: Masayuki YAMASHIMA, Ryo SHIOZAKI, Kazuyoshi HANABUSA, Kouichi SAKITA, Kazuki YONEDA
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Publication number: 20220200357Abstract: A foreign substance detection device for limiting deterioration in accuracy of foreign substance detection even if a foreign substance detection region changes. The device includes an imaging device configured to keep a region for detecting a foreign substance in an imaging range of the imaging device and a determination unit configured to determine a presence or absence of the foreign substance on the basis of a result of comparing a captured image captured by the imaging device with a reference image free of the foreign substance in the imaging range. The determination unit determines that the captured image is free of a foreign substance on the basis of the result of comparing and a prescribed first condition is satisfied, the unit executes an update process of replacing the reference image with the captured image for which the unit determines freedom of a foreign substance as an updated reference image.Type: ApplicationFiled: December 14, 2021Publication date: June 23, 2022Applicant: TDK CORPORATIONInventors: Kouichi SAKITA, Masayuki YAMASHIMA, Ryo SHIOZAKI, Kazuki YONEDA
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Patent number: 11209643Abstract: A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.Type: GrantFiled: October 2, 2019Date of Patent: December 28, 2021Assignee: MAXELL, LTD.Inventors: Takeshi Shimano, Kouichi Sakita, Mitsuhiko Oota
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Publication number: 20200036876Abstract: A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.Type: ApplicationFiled: October 2, 2019Publication date: January 30, 2020Inventors: Takeshi SHIMANO, Kouichi SAKITA, Mitsuhiko OOTA
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Patent number: 10477086Abstract: A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.Type: GrantFiled: April 25, 2018Date of Patent: November 12, 2019Assignee: MAXELL, LTD.Inventors: Takeshi Shimano, Kouichi Sakita, Mitsuhiko Oota
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Publication number: 20180249052Abstract: A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.Type: ApplicationFiled: April 25, 2018Publication date: August 30, 2018Inventors: Takeshi SHIMANO, Kouichi SAKITA, Mitsuhiko OOTA
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Patent number: 9967441Abstract: A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.Type: GrantFiled: October 16, 2013Date of Patent: May 8, 2018Assignee: MAXELL, LTD.Inventors: Takeshi Shimano, Kouichi Sakita, Mitsuhiko Oota
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Patent number: 9577539Abstract: A power supply device includes a transformer, a rectification smoothing circuit having positive and negative output ends that rectifies and smoothes an induced voltage at a secondary winding of the transformer so as to generate a direct current voltage between positive and negative output terminals, a serial connection terminal to which another power supply device is connectable and is connected to the positive output end, the negative output terminal is connected to the negative output end, the reverse flow prevention rectifying device is connected between the positive output end and the positive output terminal, its forward direction faces toward the positive output terminal, and the bypass rectifying device is connected between the positive output end and the negative output end, its forward direction faces toward the positive output end. Therefore, a plurality of power supply devices are easily connected in series without providing external diodes for each power supply device.Type: GrantFiled: January 29, 2014Date of Patent: February 21, 2017Assignee: TDK CORPORATIONInventor: Kouichi Sakita
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Publication number: 20160057337Abstract: A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.Type: ApplicationFiled: October 16, 2013Publication date: February 25, 2016Inventors: Takeshi SHIMANO, Kouichi SAKITA, Mitsuhiko OOTA
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Patent number: 9252666Abstract: A charging device is configured with a power supply device and a DC-DC converter that have constant current voltage drooping type overcurrent protection characteristics and that are connected in series. A constant current value in a voltage drooping state of the DC-DC converter is lower than a constant current value in a voltage drooping state of the power supply device. The DC-DC converter is shifted to an operation state to supply a charging current of the constant current value to a charging target when a voltage value of a direct current voltage that is output from the power supply device reaches a maximum output voltage value or an approximate value thereof. Therefore, the charging target can be charged to a higher voltage even though a charging voltage of the charging target is low.Type: GrantFiled: January 29, 2014Date of Patent: February 2, 2016Assignee: TDK CorporationInventor: Kouichi Sakita
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Publication number: 20140210402Abstract: A charging device is configured with a power supply device and a DC-DC converter that have constant current voltage drooping type overcurrent protection characteristics and that are connected in series. A constant current value in a voltage drooping state of the DC-DC converter is lower than a constant current value in a voltage drooping state of the power supply device. The DC-DC converter is shifted to an operation state to supply a charging current of the constant current value to a charging target when a voltage value of a direct current voltage that is output from the power supply device reaches a maximum output voltage value or an approximate value thereof. Therefore, the charging target can be charged to a higher voltage even though a charging voltage of the charging target is low.Type: ApplicationFiled: January 29, 2014Publication date: July 31, 2014Applicant: TDK CORPORATIONInventor: Kouichi SAKITA
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Publication number: 20140211513Abstract: A power supply device includes a transformer, a rectification smoothing circuit having positive and negative output ends that rectifies and smoothes an induced voltage at a secondary winding of the transformer so as to generate a direct current voltage between positive and negative output terminals, a serial connection terminal to which another power supply device is connectable and is connected to the positive output end, the negative output terminal is connected to the negative output end, the reverse flow prevention rectifying device is connected between the positive output end and the positive output terminal, its forward direction faces toward the positive output terminal, and the bypass rectifying device is connected between the positive output end and the negative output end, its forward direction faces toward the positive output end. Therefore, a plurality of power supply devices are easily connected in series without providing external diodes for each power supply device.Type: ApplicationFiled: January 29, 2014Publication date: July 31, 2014Applicant: TDK CorporationInventor: Kouichi SAKITA