Patents by Inventor Ryosei Makino
Ryosei Makino 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: 20160377685Abstract: Provided is a technique that contributes to the improvement of voltage measurement accuracy and uniform current consumption of a battery in a voltage measurement device. Switch circuits (SWP and SWN) include switch elements (MP1 and MP2 or MN1 and MN2) which are provided between an input terminal and an output terminal, and switch driving units (401 to 409) which are driven between a first power supply voltage (VCC or GND) and a second power supply voltage (GND or VCC), which are different from each other, with an input voltage interposed therebetween.Type: ApplicationFiled: September 7, 2016Publication date: December 29, 2016Inventors: Ryosei MAKINO, Hirohiko HAYAKAWA
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Publication number: 20160308377Abstract: A semiconductor device for battery control is provided with a control circuit capable of controlling turning on/off of a charging transistor provided in a charging path of a battery, a CPU capable of controlling charging of the battery via the control circuit, and a deep discharge detection circuit capable of detecting a deeply discharged state of the battery. The semiconductor device is also provided with a switch circuit which, when a deeply discharged state of the battery is detected by the deep discharge detection circuit, preferentially sends the detection result to the control circuit and, thereby, forcibly turns off the charging transistor regardless of charging control by the CPU. When a deeply discharged state of the battery is detected, the charging path of the battery is shut off to prohibit subsequent charging regardless of charging control by the CPU.Type: ApplicationFiled: June 23, 2016Publication date: October 20, 2016Inventors: Daisuke KATO, Ryosei MAKINO, Ryosuke ENOMOTO
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Patent number: 9453886Abstract: Provided is a technique that contributes to the improvement of voltage measurement accuracy and uniform current consumption of a battery in a voltage measurement device. Switch circuits (SWP and SWN) include switch elements (MP1 and MP2 or MN1 and MN2) which are provided between an input terminal and an output terminal, and switch driving units (401 to 409) which are driven between a first power supply voltage (VCC or GND) and a second power supply voltage (GND or VCC), which are different from each other, with an input voltage interposed therebetween.Type: GrantFiled: April 10, 2012Date of Patent: September 27, 2016Assignee: Renesas Electronics CorporationInventors: Ryosei Makino, Hirohiko Hayakawa
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Publication number: 20160165688Abstract: A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit.Type: ApplicationFiled: January 28, 2016Publication date: June 9, 2016Inventors: Ryosei MAKINO, Kenichi YOKOTA, Tomohiro TAZAWA
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Patent number: 9258859Abstract: A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit.Type: GrantFiled: April 24, 2015Date of Patent: February 9, 2016Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Ryosei Makino, Kenichi Yokota, Tomohiro Tazawa
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Publication number: 20150230304Abstract: A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit.Type: ApplicationFiled: April 24, 2015Publication date: August 13, 2015Inventors: Ryosei MAKINO, Kenichi YOKOTA, Tomohiro TAZAWA
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Patent number: 9041314Abstract: A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit.Type: GrantFiled: May 8, 2014Date of Patent: May 26, 2015Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Ryosei Makino, Kenichi Yokota, Tomohiro Tazawa
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Publication number: 20140239831Abstract: A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit.Type: ApplicationFiled: May 8, 2014Publication date: August 28, 2014Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Ryosei MAKINO, Kenichi YOKOTA, Tomohiro TAZAWA
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Patent number: 8754590Abstract: A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit.Type: GrantFiled: May 17, 2011Date of Patent: June 17, 2014Assignee: Renesas Electronics CorporationInventors: Ryosei Makino, Kenichi Yokota, Tomohiro Tazawa
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Publication number: 20140043032Abstract: Provided is a technique that contributes to the improvement of voltage measurement accuracy and uniform current consumption of a battery in a voltage measurement device. Switch circuits (SWP and SWN) include switch elements (MP1 and MP2 or MN1 and MN2) which are provided between an input terminal and an output terminal, and switch driving units (401 to 409) which are driven between a first power supply voltage (VCC or GND) and a second power supply voltage (GND or VCC), which are different from each other, with an input voltage interposed therebetween.Type: ApplicationFiled: April 10, 2012Publication date: February 13, 2014Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Ryosei Makino, Hirohiko Hayakawa
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Publication number: 20130307551Abstract: In an assembled battery including plural cells series-coupled in multiple stages, each voltage measuring unit includes an analog front end unit which measures the voltages of cells, an interface unit for interfacing with a common bus, a voltage measurement control unit which controls the analog front end unit and the interface unit, and an insulating element which allows communication between the voltage measurement control unit and the interface unit in a state of being insulated from each other. The interface unit of each voltage measuring unit is electrically insulated, so that it can be coupled to a low-voltage power supply system of the electrical system that includes the battery system control unit. Since there is no potential difference between the interface unit and the battery system control unit, they can be coupled to each other via the common bus.Type: ApplicationFiled: April 29, 2013Publication date: November 21, 2013Applicant: Renesas Electronics CorporationInventor: Ryosei Makino
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Publication number: 20130257380Abstract: A semiconductor device for battery control is provided with a control circuit capable of controlling turning on/off of a charging transistor provided in a charging path of a battery, a CPU capable of controlling charging of the battery via the control circuit, and a deep discharge detection circuit capable of detecting a deeply discharged state of the battery. The semiconductor device is also provided with a switch circuit which, when a deeply discharged state of the battery is detected by the deep discharge detection circuit, preferentially sends the detection result to the control circuit and, thereby, forcibly turns off the charging transistor regardless of charging control by the CPU. When a deeply discharged state of the battery is detected, the charging path of the battery is shut off to prohibit subsequent charging regardless of charging control by the CPU.Type: ApplicationFiled: March 2, 2013Publication date: October 3, 2013Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Daisuke Kato, Ryosei Makino, Ryosuke Enomoto
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Publication number: 20110292704Abstract: A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit.Type: ApplicationFiled: May 17, 2011Publication date: December 1, 2011Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Ryosei MAKINO, Kenichi YOKOTA, Tomohiro TAZAWA
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Patent number: 7704407Abstract: The present invention provides an oxygen-absorbing resin composition, which is superior in oxygen absorbability, absorbs oxygen remaining in the container after sealing, keeps the contents in the container in good preservation, and improves moldability, dispersibility of the oxygen absorbent, stability of the oxygen absorbing performance, performance of preventing peeling and separation of the oxygen absorbent from the base resin, rigidity of the sealing part, and the like, which become problems in the case of including an oxygen absorbent having high oxygen absorbability and low compatibility with the base resin, as well as provides an oxygen-absorbing container cap and an oxygen-absorbing container plug using the same. The present invention provides an oxygen-absorbing resin composition characterized by being obtained by dispersing and blending an oxygen absorbent containing 20% or more of particles having a particle diameter of 1000 ?m or less at a ratio of 20% or less to a base resin.Type: GrantFiled: June 15, 2005Date of Patent: April 27, 2010Assignee: Nihon Yamamura Glass Co., Ltd.Inventors: Ryosei Makino, Tadayoshi Takashima, Kazuhiro Sasakura
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Publication number: 20090048104Abstract: The present invention provides an oxygen-absorbing resin composition, which is superior in oxygen absorbability, absorbs oxygen remaining in the container after sealing, keeps the contents in the container in good preservation, and improves moldability, dispersibility of the oxygen absorbent, stability of the oxygen absorbing performance, performance of preventing peeling and separation of the oxygen absorbent from the base resin, rigidity of the sealing part, and the like, which become problems in the case of including an oxygen absorbent having high oxygen absorbability and low compatibility with the base resin, as well as provides an oxygen-absorbing container cap and an oxygen-absorbing container plug using the same. The present invention provides an oxygen-absorbing resin composition characterized by being obtained by dispersing and blending an oxygen absorbent containing 20% or more of particles having a particle diameter of 1000 ?m or less at a ratio of 20% or less to a base resin.Type: ApplicationFiled: June 15, 2005Publication date: February 19, 2009Inventors: Ryosei Makino, Tadayoshi Takashima, Kazuhiro Sasakura