Patents by Inventor Sohei Okamoto
Sohei Okamoto 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: 20190287120Abstract: A networked system includes a plurality of devices that access user portals, a plurality of digital displays located in a retail store alongside retail or product displays and a real-time data store and processor. Each digital display displays content related to the retail or product displays, includes sensors and a camera and is configured to create user sessions with date and time stamps based on each camera detecting an anonymous customer's face. The processor is configured to analyze data collected from the sensors of each digital display during each user session to determine real-time in-store customer insight data related to in-store customer behavior and configured to relay the insight data to the user portals accessed by the plurality of devices.Type: ApplicationFiled: March 19, 2019Publication date: September 19, 2019Inventors: Luis F. Galvez, Tianwei Liu, Ivan Yakovenko, Brijhette R. Farmer, Afsoon Nicknam, Sohei Okamoto
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Patent number: 9667159Abstract: A control unit controls the amplitude of at least either an output voltage or an output current by shifting at least either a first on time or a second on time.Type: GrantFiled: July 28, 2015Date of Patent: May 30, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Keiji Akamatsu, Takaaki Norisada, Sohei Okamoto, Daisuke Fukuda, Goh Yamada
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Patent number: 9543823Abstract: A power conversion apparatus includes an inductor inserted between a secondary winding and a switching device, and an auxiliary switching device inserted between the secondary winding and the switching device in parallel to the inductor. The auxiliary switching device is in an off state in a power supply mode in which an output voltage and an output current of a connector have the same polarity. The auxiliary switching device is in an on state in a power regeneration mode in which the output voltage and the output current of the connector have different polarities.Type: GrantFiled: October 20, 2015Date of Patent: January 10, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Goh Yamada, Sohei Okamoto, Keiji Akamatsu, Daisuke Fukuda, Takaaki Norisada
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Patent number: 9487098Abstract: A power conversion apparatus according to one aspect of the present disclosure comprises a bridge circuit including a first switch and a second switch, a first auxiliary switch, a first auxiliary inductor, a control device, a transformer, a secondary-side inductor, a rectifier circuit, a smoothing circuit, and an output detection circuit. The control device performs an on/off operation on the first auxiliary switch if a value detected by the output detection circuit is smaller than or equal to a setting value, and maintains the first auxiliary switch in an off state if the detected value exceeds the setting value.Type: GrantFiled: February 20, 2015Date of Patent: November 8, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Goh Yamada, Takaaki Norisada, Hajime Hida, Sohei Okamoto, Keiji Akamatsu
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Patent number: 9431917Abstract: An electric power converter includes a bridge circuit, a transformer, a rectifier circuit, and a smoothing circuit. The rectifier circuit includes a first secondary-side diode disposed in a first current path extending between one end of a secondary winding and a first terminal of the smoothing circuit, a second secondary-side diode disposed in a second current path extending between the other end of the secondary winding and the first terminal of the smoothing circuit, a third secondary-side diode, a fourth secondary-side diode, a first secondary-side switching element, and a second secondary-side switching element. The first secondary-side switching element and the second secondary-side switching element are connected in common to a first node at which the first current path and the second current path are connected to each other.Type: GrantFiled: January 8, 2015Date of Patent: August 30, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Sohei Okamoto, Goh Yamada, Daisuke Fukuda, Takaaki Norisada, Keiji Akamatsu
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Publication number: 20160141972Abstract: A power conversion apparatus includes an inductor inserted between a secondary winding and a switching device, and an auxiliary switching device inserted between the secondary winding and the switching device in parallel to the inductor. The auxiliary switching device is in an off state in a power supply mode in which an output voltage and an output current of a connector have the same polarity. The auxiliary switching device is in an on state in a power regeneration mode in which the output voltage and the output current of the connector have different polarities.Type: ApplicationFiled: October 20, 2015Publication date: May 19, 2016Inventors: GOH YAMADA, SOHEI OKAMOTO, KEIJI AKAMATSU, DAISUKE FUKUDA, TAKAAKI NORISADA
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Publication number: 20160105119Abstract: A control unit controls the amplitude of at least either an output voltage or an output current by shifting at least either a first on time or a second on time.Type: ApplicationFiled: July 28, 2015Publication date: April 14, 2016Inventors: KEIJI AKAMATSU, TAKAAKI NORISADA, SOHEI OKAMOTO, DAISUKE FUKUDA, GOH YAMADA
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Publication number: 20150256089Abstract: A power conversion apparatus according to one aspect of the present disclosure comprises a bridge circuit including a first switch and a second switch, a first auxiliary switch, a first auxiliary inductor, a control device, a transformer, a secondary-side inductor, a rectifier circuit, a smoothing circuit, and an output detection circuit. The control device performs an on/off operation on the first auxiliary switch if a value detected by the output detection circuit is smaller than or equal to a setting value, and maintains the first auxiliary switch in an off state if the detected value exceeds the setting value.Type: ApplicationFiled: February 20, 2015Publication date: September 10, 2015Inventors: GOH YAMADA, TAKAAKI NORISADA, HAJIME HIDA, SOHEI OKAMOTO, KEIJI AKAMATSU
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Publication number: 20150207424Abstract: An electric power converter includes a bridge circuit, a transformer, a rectifier circuit, and a smoothing circuit. The rectifier circuit includes a first secondary-side diode disposed in a first current path extending between one end of a secondary winding and a first terminal of the smoothing circuit, a second secondary-side diode disposed in a second current path extending between the other end of the secondary winding and the first terminal of the smoothing circuit, a third secondary-side diode, a fourth secondary-side diode, a first secondary-side switching element, and a second secondary-side switching element. The first secondary-side switching element and the second secondary-side switching element are connected in common to a first node at which the first current path and the second current path are connected to each other.Type: ApplicationFiled: January 8, 2015Publication date: July 23, 2015Inventors: SOHEI OKAMOTO, GOH YAMADA, DAISUKE FUKUDA, TAKAAKI NORISADA, KEIJI AKAMATSU
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Patent number: 7999766Abstract: A driving method and a driver circuit for improving the definition of display image on a plasma display device. In an initial state in an addressing discharge period, a scanning electrode is applied with a scanning base pulse at a first power supply potential. This suppresses a weak erroneous discharge between a scanning base pulse and a display data pulse. Next, the scanning electrode is applied with a scanning pulse. After the scanning pulse has been applied, the scanning electrode is applied with the scanning base pulse at a second power supply potential. In this way, the level of the scanning base pulse applied to the scanning electrode after the end of the application of the scanning pulse in the addressing discharge period is lower than the level of the scanning base pulse applied to the scanning electrode before the application of the scanning pulse.Type: GrantFiled: February 14, 2008Date of Patent: August 16, 2011Assignee: Panasonic CorporationInventors: Sohei Okamoto, Takatoshi Shoji, Hiroshi Shirasawa
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Publication number: 20080136747Abstract: A driving method and a driver circuit for improving the definition of display image on a plasma display device. In an initial state in an addressing discharge period, a scanning electrode is applied with a scanning base pulse at a first power supply potential. This suppresses a weak erroneous discharge between a scanning base pulse and a display data pulse. Next, the scanning electrode is applied with a scanning pulse. After the scanning pulse has been applied, the scanning electrode is applied with the scanning base pulse at a second power supply potential. In this way, the level of the scanning base pulse applied to the scanning electrode after the end of the application of the scanning pulse in the addressing discharge period is lower than the level of the scanning base pulse applied to the scanning electrode before the application of the scanning pulse.Type: ApplicationFiled: February 14, 2008Publication date: June 12, 2008Applicant: Pioneer Plasma Display CorporationInventors: Sohei OKAMOTO, Takatoshi Shoji, Hiroshi Shirasawa
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Patent number: 7355567Abstract: A driving method and a driver circuit for improving the definition of display image on a plasma display device. In an initial state in an addressing discharge period, a scanning electrode is applied with a scanning base pulse at a first power supply potential. This suppresses a weak erroneous discharge between a scanning base pulse and a display data pulse. Next, the scanning electrode is applied with a scanning pulse. After the scanning pulse has been applied, the scanning electrode is applied with the scanning base pulse at a second power supply potential. In this way, the level of the scanning base pulse applied to the scanning electrode after the end of the application of the scanning pulse in the addressing discharge period is lower than the level of the scanning base pulse applied to the scanning electrode before the application of the scanning pulse.Type: GrantFiled: December 2, 2004Date of Patent: April 8, 2008Assignee: Pioneer CorporationInventors: Sohei Okamoto, Takatoshi Shoji, Hiroshi Shirasawa
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Publication number: 20050156824Abstract: A driving method and a driver circuit for improving the definition of display image on a plasma display device. In an initial state in an addressing discharge period, a scanning electrode is applied with a scanning base pulse at a first power supply potential. This suppresses a weak erroneous discharge between a scanning base pulse and a display data pulse. Next, the scanning electrode is applied with a scanning pulse. After the scanning pulse has been applied, the scanning electrode is applied with the scanning base pulse at a second power supply potential. In this way, the level of the scanning base pulse applied to the scanning electrode after the end of the application of the scanning pulse in the addressing discharge period is lower than the level of the scanning base pulse applied to the scanning electrode before the application of the scanning pulse.Type: ApplicationFiled: December 2, 2004Publication date: July 21, 2005Inventors: Sohei Okamoto, Takatoshi Shoji, Hiroshi Shirasawa
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Patent number: 5034137Abstract: A method for treating muddy water which comprises adding a first chemical containing an alkali metal or alkaline earth metal oxide or hydroxide to muddy water to be treated, thereby rendering muddy water alkaline, adding a second chemical containing an anionic polymer coagulant to muddy water simultaneously with or after the addition of the chemical, further adding a third chemical containing a sulfate thereby rendering the muddy water weakly alkaline, and then adding a fourth chemical containing an anionic polymer coagulant to muddy water. As a result, large-sized and hard flocs are produced.Type: GrantFiled: March 16, 1990Date of Patent: July 23, 1991Assignee: Kabushiki Kaisha Iseki Kaihatsu KokiInventors: Sohei Okamoto, Jiro Hirano, Takusaburo Ohnishi
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Patent number: 4810377Abstract: A clarification device comprises a purifier tank having an opening at its top and an inlet and an outlet for sewage, at least one contact means to which microorganisms for purification are to be attached and which is disposed in the purifier tank at position spaced upwardly from a bottom of the purifier tank, and air-flowing means disposed between the contact means and the bottom of the tank, air-supplying means extending vertically in the purifier tank for supplying air to the air-flowing means. The contact means includes a first assembly disposed at the inlet side so as to be removed out of the tank through the opening, and a second assembly disposed at the outlet side of the first assembly so as to be removed out of the tank through the opening. The clarification device further comprises means for closing the opening of the purifier tank.Type: GrantFiled: September 10, 1987Date of Patent: March 7, 1989Assignee: Kabushiki Kaisha Iseki Kaihatsu KokiInventors: Minoru Kato, Sohei Okamoto, Yukio Suzuki
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Patent number: D736773Type: GrantFiled: January 22, 2015Date of Patent: August 18, 2015Assignee: IDEC CORPORATIONInventor: Sohei Okamoto