Patents by Inventor Masayuki Yamashima
Masayuki Yamashima 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: 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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Patent number: 11437654Abstract: A battery pack which includes: a battery cell which contains a non-aqueous electrolyte, wherein the battery cell is a non-aqueous electrolyte secondary battery; a casing which stores the battery cell; and at least one liquid leakage sensor which detects liquid leakage from the battery cell, wherein the casing and/or the battery cell have a leaked liquid retention region in which the non-aqueous electrolyte tends to be retained when the non-aqueous electrolyte leaks out of the battery cell, wherein the liquid leakage sensor outputs measurement information as a detection result without using a charging/discharging circuit which charges and discharges the battery cell, and wherein at least one sensor unit of the liquid leakage sensor is provided in the leaked liquid retention region.Type: GrantFiled: November 20, 2018Date of Patent: September 6, 2022Assignee: TDK CORPORATIONInventors: Masayuki Yamashima, Mikio Tsuruoka, Hiroki Kitamura
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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: 10658850Abstract: Disclosed herein is a battery module that includes an external power supply terminal, a battery cell, a monitoring circuit that monitors a state of the battery cell, and a switch circuit that supplies one of an electric power supplied from the external power supply terminal and an electric power supplied from the battery cell to the monitoring circuit based on a switching signal.Type: GrantFiled: January 19, 2018Date of Patent: May 19, 2020Assignee: TDK CORPORATIONInventors: Takayuki Mino, Masayuki Yamashima
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Publication number: 20200067145Abstract: A battery pack which includes: a battery cell which contains a non-aqueous electrolyte, wherein the battery cell is a non-aqueous electrolyte secondary battery; a casing which stores the battery cell; and at least one liquid leakage sensor which detects liquid leakage from the battery cell, wherein the casing and/or the battery cell have a leaked liquid retention region in which the non-aqueous electrolyte tends to be retained when the non-aqueous electrolyte leaks out of the battery cell, wherein the liquid leakage sensor outputs measurement information as a detection result without using a charging/discharging circuit which charges and discharges the battery cell, and wherein at least one sensor unit of the liquid leakage sensor is provided in the leaked liquid retention region.Type: ApplicationFiled: November 20, 2018Publication date: February 27, 2020Applicant: TDK CORPORATIONInventors: Masayuki YAMASHIMA, Mikio TSURUOKA, Hiroki KITAMURA
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Publication number: 20180212444Abstract: Disclosed herein is a battery module that includes an external power supply terminal, a battery cell, a monitoring circuit that monitors a state of the battery cell, and a switch circuit that supplies one of an electric power supplied from the external power supply terminal and an electric power supplied from the battery cell to the monitoring circuit based on a switching signal.Type: ApplicationFiled: January 19, 2018Publication date: July 26, 2018Applicant: TDK CorporationInventors: Takayuki MINO, Masayuki Yamashima
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Patent number: 6967449Abstract: The present invention relates to a discharge lamp lighting apparatus in which overshoot occurring when the polarity of AC rectangular wave voltage/current is inverted is suppressed. An inverter converts DC power supplied by a converter to AC rectangular wave power and outputs the AC rectangular wave power. A power calculation unit generates a power detection signal based upon a voltage detection signal and a current detection signal detected on the output side of the converter. A control target value setting unit outputs an output power command value to be used to control the DC power so as to achieve a target value. A correction signal generation unit outputs a correction signal to be used to correct the output power command value in conformance to the power detection signal in synchronization with a polarity inversion of the AC rectangular wave power.Type: GrantFiled: March 24, 2004Date of Patent: November 22, 2005Assignee: TDK CorporationInventors: Yutaka Ishihara, Akiko Takeya, Masayuki Yamashima
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Publication number: 20040189217Abstract: The present invention relates to a discharge lamp lighting apparatus in which overshoot occurring when the polarity of AC rectangular wave voltage/current is inverted is suppressed. An inverter converts DC power supplied by a converter to AC rectangular wave power and outputs the AC rectangular wave power. A power calculation unit generates a power detection signal based upon a voltage detection signal and a current detection signal detected on the output side of the converter. A control target value setting unit outputs an output power command value to be used to control the DC power so as to achieve a target value. A correction signal generation unit outputs a correction signal to be used to correct the output power command value in conformance to the power detection signal in synchronization with a polarity inversion of the AC rectangular wave power.Type: ApplicationFiled: March 24, 2004Publication date: September 30, 2004Applicant: TDK CORPORATIONInventors: Yutaka Ishihara, Akiko Takeya, Masayuki Yamashima