Patents by Inventor Shin-ichiro Matsuzawa
Shin-ichiro Matsuzawa 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: 20230327485Abstract: Provided is a power transmission device that has a simple structure and suppresses magnetic field leakage from a power transmission coil while suppressing excessive increase in the outer shape and the weight of the power transmission device. A power transmission device 1 includes: a power transmission portion 2 including a power transmission coil 20 and a housing 3 made of metal and having a peripheral wall 30 surrounding the power transmission portion 2. A shielding portion 5 protruding inward of the peripheral wall 30 is integrated with, of the peripheral wall 30, a top end 30t located on a power reception coil 90 placement side.Type: ApplicationFiled: March 22, 2023Publication date: October 12, 2023Inventors: Toru KANTO, Minoru SHIBATA, Shin-ichiro MATSUZAWA, Toshiaki WATANABE
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Patent number: 10574094Abstract: Provided is a transmitter which can maximize the efficiency of rectification in a power-receiving electronic device irrespective of the distance therebetween. The transmitter transmits electric power to the electronic device through use of a microwave. The electronic device receives the microwave, converts the microwave to DC power, and uses the DC power as operation power.Type: GrantFiled: February 22, 2018Date of Patent: February 25, 2020Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Masaya Ishida, Toshiaki Watanabe, Shin-ichiro Matsuzawa
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Patent number: 10516217Abstract: An antenna apparatus has a dielectric substrate and conductors. The antenna apparatus includes an antenna element which is arranged on a main surface of the dielectric substrate and has directivity ahead of the main surface, and a directional characteristic control member which includes a sidewall part which projects ahead of the main surface on at least one side of directivity of the antenna element with respect to the antenna element, and a roof part which projects in a direction of the antenna element from the sidewall part at a predetermined angle of more than 70° and less than 120° with respect to the sidewall part so that orthogonal projection to the main surface does not reach the antenna element, to reflect or absorb radio waves.Type: GrantFiled: April 21, 2017Date of Patent: December 24, 2019Assignee: DENSO CORPORATIONInventors: Akihisa Fujita, Asahi Kondo, Shin-ichiro Matsuzawa
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Publication number: 20180301945Abstract: Provided is a transmitter which can maximize the efficiency of rectification in a power-receiving electronic device irrespective of the distance therebetween. The transmitter transmits electric power to the electronic device through use of a microwave. The electronic device receives the microwave, converts the microwave to DC power, and uses the DC power as operation power.Type: ApplicationFiled: February 22, 2018Publication date: October 18, 2018Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Masaya ISHIDA, Toshiaki WATANABE, Shin-ichiro MATSUZAWA
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Publication number: 20170222328Abstract: An antenna apparatus has a dielectric substrate and conductors. The antenna apparatus includes an antenna element which is arranged on a main surface of the dielectric substrate and has directivity ahead of the main surface, and a directional characteristic control member which includes a sidewall part which projects ahead of the main surface on at least one side of directivity of the antenna element with respect to the antenna element, and a roof part which projects in a direction of the antenna element from the sidewall part at a predetermined angle of more than 70° and less than 120° with respect to the sidewall part so that orthogonal projection to the main surface does not reach the antenna element, to reflect or absorb radio waves.Type: ApplicationFiled: April 21, 2017Publication date: August 3, 2017Inventors: Akihisa Fujita, Asahi Kondo, Shin-ichiro Matsuzawa
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Patent number: 9696415Abstract: A radar apparatus includes a change amount calculation section for obtaining, for each of a plurality of peaks of a first spectrum belonging to the same group, a peak value at the present point in time and calculating the difference between the peak value and a peak value obtained before the present point in time; a ratio calculation section for comparing the obtained difference with a predetermined difference threshold and calculating a ratio of the number of peaks whose differences are greater than the difference threshold to the number of all the peaks belonging to the same group; and a pedestrian determination section for determining that the object is a pedestrian when the calculated ratio is greater than a predetermined ratio threshold and at least one of peaks belonging to the same group differs from the remaining peaks in terms of the sign of the difference.Type: GrantFiled: October 1, 2014Date of Patent: July 4, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Makoto Nakai, Shin-ichiro Matsuzawa, Yoshiaki Minami, Yuji Oda
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Publication number: 20160056539Abstract: An antenna apparatus has a dielectric substrate and conductors. The antenna apparatus includes an antenna element which is arranged on a main surface of the dielectric substrate and has directivity ahead of the main surface, and a directional characteristic control member which includes a sidewall part which projects ahead of the main surface on at least one side of directivity of the antenna element with respect to the antenna element, and a roof part which projects in a direction of the antenna element from the sidewall part at a predetermined angle of more than 70° and less than 120° with respect to the sidewall part so that orthogonal projection to the main surface does not reach the antenna element, to reflect or absorb radio waves.Type: ApplicationFiled: March 20, 2014Publication date: February 25, 2016Inventors: Akihisa Fujita, Asahi Kondo, Shin-ichiro Matsuzawa
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Patent number: 9110162Abstract: An antenna cover (1) for a radar (2) for a vehicle has a rectangular parallelepiped shape, having a flat cover top (10) that faces a microstrip antenna (21a, 21b) of the radar (2) and a sidewall (11) that covers the microstrip antenna (21a, 21b) sideways. The sidewall (11) is located out of the range where the electromagnetic waves to be received by the microstrip antenna (21a, 21b) are directly received. An inner face (11a) of the sidewall (11) is at a right angle to the cover top (10). An outer face (11b) of the sidewall (11) is at a constant angle ? larger than 0 degree but smaller than 90 degrees, to the inner face (11a) of the sidewall (11). The sidewall (11) is structured such that its thickness increases toward the side where the microstrip antenna (21a, 21b) is present.Type: GrantFiled: July 19, 2011Date of Patent: August 18, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shin-ichiro Matsuzawa, Masaru Ogawa, Koji Takeuchi
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Publication number: 20150097713Abstract: A radar apparatus includes a change amount calculation section for obtaining, for each of a plurality of peaks of a first spectrum belonging to the same group, a peak value at the present point in time and calculating the difference between the peak value and a peak value obtained before the present point in time; a ratio calculation section for comparing the obtained difference with a predetermined difference threshold and calculating a ratio of the number of peaks whose differences are greater than the difference threshold to the number of all the peaks belonging to the same group; and a pedestrian determination section for determining that the object is a pedestrian when the calculated ratio is greater than a predetermined ratio threshold and at least one of peaks belonging to the same group differs from the remaining peaks in terms of the sign of the difference.Type: ApplicationFiled: October 1, 2014Publication date: April 9, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Makoto NAKAI, Shin-ichiro MATSUZAWA, Yoshiaki MINAMI, Yuji ODA
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Patent number: 8878719Abstract: A radar apparatus forming a series-feed array-antenna includes an array antenna having transmission/reception antennas, and each antenna includes a plurality of antenna elements arrayed with feed-lines to be series-connected each other. A calibration line is disposed between the transmission antenna and the reception antenna via a switch which connects or disconnects the calibration line. The signal having a phase shift is transmitted via the calibration line when the switch connects the calibration line and an amount of phase shift from the signal transmitted via the calibration line is calculated based on a reference phase at the transmission antenna thereby calibrating the phase shift.Type: GrantFiled: August 30, 2011Date of Patent: November 4, 2014Assignee: Denso CorporationInventors: Kento Nakabayashi, Tetsuya Katayama, Shin-ichiro Matsuzawa, Masaru Ogawa
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Patent number: 8736514Abstract: The antenna includes a first ground plate, a first dielectric substrate formed on the first ground plate, a transmission line made of a conductive material formed on the first dielectric substrate, and a plurality of antenna elements electromagnetically coupled to the transmission line. The transmission line is constituted of at least one first line serving as a resonator having a resonator length equal to (2n?1)/2 times (n being a positive integer) a guide wavelength of the transmission line and a plurality of second lines each having an electrical length longer than half the guide wavelength, the first and second lines being disposed alternately at predetermined intervals. Each of the antenna elements is electromagnetically coupled to a corresponding one of the second lines.Type: GrantFiled: May 5, 2011Date of Patent: May 27, 2014Assignee: Denso CorporationInventors: Kento Nakabayashi, Shin-ichiro Matsuzawa, Masaru Ogawa
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Publication number: 20130229299Abstract: An antenna cover (1) for a radar (2) for a vehicle has a rectangular parallelepiped shape, having a flat cover top (10) that faces a microstrip antenna (21a, 21b) of the radar (2) and a sidewall (11) that covers the microstrip antenna (21a, 21b) sideways. The sidewall (11) is located out of the range where the electromagnetic waves to be received by the microstrip antenna (21a, 21b) are directly received. An inner face (11a) of the sidewall (11) is at a right angle to the cover top (10). An outer face (11b) of the sidewall (11) is at a constant angle ? larger than 0 degree but smaller than 90 degrees, to the inner face (11a) of the sidewall (11). The sidewall (11) is structured such that its thickness increases toward the side where the microstrip antenna (21a, 21b) is present.Type: ApplicationFiled: July 19, 2011Publication date: September 5, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shin-ichiro Matsuzawa, Masaru Ogawa, Koji Takeuchi
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Publication number: 20120229364Abstract: The antenna includes a first ground plate, a first dielectric substrate formed on the first ground plate, a transmission line made of a conductive material formed on the first dielectric substrate, and a plurality of antenna elements electromagnetically coupled to the transmission line. The transmission line is constituted of at least one first line serving as a resonator having a resonator length equal to (2n?1)/2 times (n being a positive integer) a guide wavelength of the transmission line and a plurality of second lines each having an electrical length longer than half the guide wavelength, the first and second lines being disposed alternately at predetermined intervals. Each of the antenna elements is electromagnetically coupled to a corresponding one of the second lines.Type: ApplicationFiled: May 5, 2011Publication date: September 13, 2012Applicant: DENSO CORPORATIONInventors: Kento Nakabayashi, Shin-ichiro Matsuzawa, Masaru Ogawa
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Publication number: 20120050094Abstract: A radar apparatus forming a series-feed array-antenna includes an array antenna having transmission/reception antennas, and each antenna includes a plurality of antenna elements arrayed with feed-lines to be series-connected each other. A calibration line is disposed between the transmission antenna and the reception antenna via a switch which connects or disconnects the calibration line. The signal having a phase shift is transmitted via the calibration line when the switch connects the calibration line and an amount of phase shift from the signal transmitted via the calibration line is calculated based on a reference phase at the transmission antenna thereby calibrating the phase shift.Type: ApplicationFiled: August 30, 2011Publication date: March 1, 2012Applicant: DENSO CORPORATIONInventors: Kento Nakabayashi, Tetsuya Katayama, Shin-ichiro Matsuzawa, Masaru Ogawa
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Patent number: 6831611Abstract: The invention is an antenna system that transmits and receives image signals audio signal and/or data signals. The antenna system has at least one antenna element and one or more power supply elements. A power supply switching device switches the power supply element or elements to select at least one antenna element and a power supply cable supplies power to the power supply switching device.Type: GrantFiled: January 31, 2003Date of Patent: December 14, 2004Assignee: Toyota Jidosha Kabushiki KaishaInventors: Junzo Ooe, Kansei Mizutani, Kazuo Sato, Shin-ichiro Matsuzawa, Kunitoshi Nishikawa
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Publication number: 20030156069Abstract: The invention is an antenna system that transmits and receives image signals audio signal and/or data signals. The antenna system has at least one antenna element and one or more power supply elements. A power supply switching device switches the power supply element or elements to select at least one antenna element and a power supply cable supplies power to the power supply switching device.Type: ApplicationFiled: January 31, 2003Publication date: August 21, 2003Applicant: Toyota Jidosha Kabushiki KaishaInventors: Junzo Ooe, Kansei Mizutani, Kazuo Sato, Shin-Ichiro Matsuzawa, Kunitoshi Nishikawa