Patents by Inventor Yukihiro Kita

Yukihiro Kita 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).

  • Patent number: 10319407
    Abstract: A signal conversion device includes a first converting section configured to convert a clock signal input through a first signal line, a data signal input through a second signal line, and a control signal input through a third signal line, into pulse signals including a first pulse train and a second pulse train; and a transmitting section configured to transmit the first pulse train through a fourth signal line and the second pulse train through a fifth signal line, wherein the control signal is a signal that, through a level transition, causes a control target device to switch between an active state and an inactive state, and wherein the first converting section is configured to put successive pulses into at least one of the first pulse train and the second pulse train in response to the level transition of the control signal.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: June 11, 2019
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Yukihiro Kita
  • Publication number: 20180226099
    Abstract: A signal conversion device includes a first converting section configured to convert a clock signal input through a first signal line, a data signal input through a second signal line, and a control signal input through a third signal line, into pulse signals including a first pulse train and a second pulse train; and a transmitting section configured to transmit the first pulse train through a fourth signal line and the second pulse train through a fifth signal line, wherein the control signal is a signal that, through a level transition, causes a control target device to switch between an active state and an inactive state, and wherein the first converting section is configured to put successive pulses into at least one of the first pulse train and the second pulse train in response to the level transition of the control signal.
    Type: Application
    Filed: April 2, 2018
    Publication date: August 9, 2018
    Inventor: YUKIHIRO KITA
  • Patent number: 9959899
    Abstract: A signal conversion device includes a first converting section configured to convert a clock signal input through a first signal line, a data signal input through a second signal line, and a control signal input through a third signal line, into pulse signals including a first pulse train and a second pulse train; and a transmitting section configured to transmit the first pulse train through a fourth signal line and the second pulse train through a fifth signal line, wherein the control signal is a signal that, through a level transition, causes a control target device to switch between an active state and an inactive state, and wherein the first converting section is configured to put successive pulses into at least one of the first pulse train and the second pulse train in response to the level transition of the control signal.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: May 1, 2018
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Yukihiro Kita
  • Publication number: 20180005661
    Abstract: The present disclosure provides a signal conversion device including: a first converting section configured to convert a clock signal input through a first signal line, a data signal input through a second signal line, and a control signal input through a third signal line, into pulse signals including a first pulse train and a second pulse train; and a transmitting section configured to transmit the first pulse train through a fourth signal line and the second pulse train through a fifth signal line, wherein the control signal is a signal that, through a level transition, causes a control target device to switch between an active state and an inactive state, and wherein the first converting section is configured to put successive pulses into at least one of the first pulse train and the second pulse train in response to the level transition of the control signal.
    Type: Application
    Filed: June 26, 2017
    Publication date: January 4, 2018
    Inventor: YUKIHIRO KITA
  • Patent number: 9172265
    Abstract: A battery charger includes a battery cell, a reference voltage generating section, an A/D converting section including an A/D converter and a control section. The reference voltage generating section includes a first reference voltage circuit generating a first reference voltage and a second reference voltage circuit generating a second reference voltage equal to the first reference voltage. To diagnose the A/D converter, the first reference voltage circuit is used. To diagnose the first reference voltage circuit, a second A/D conversion value obtained by A/D converting a second divided voltage of the second reference voltage via the A/D converter using the first reference voltage is compared with a first reference value obtained by A/D converting a first divided voltage of the first reference voltage via the A/D converter using the first reference voltage when the first reference voltage circuit is normal.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: October 27, 2015
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Yukihiro Kita
  • Publication number: 20140176053
    Abstract: A battery charger includes a battery cell, a reference voltage generating section, an A/D converting section including an A/D converter and a control section. The reference voltage generating section includes a first reference voltage circuit generating a first reference voltage and a second reference voltage circuit generating a second reference voltage equal to the first reference voltage. To diagnose the A/D converter, the first reference voltage circuit is used. To diagnose the first reference voltage circuit, a second A/D conversion value obtained by A/D converting a second divided voltage of the second reference voltage via the A/D converter using the first reference voltage is compared with a first reference value obtained by A/D converting a first divided voltage of the first reference voltage via the A/D converter using the first reference voltage when the first reference voltage circuit is normal.
    Type: Application
    Filed: February 21, 2014
    Publication date: June 26, 2014
    Inventor: Yukihiro Kita
  • Patent number: 8692510
    Abstract: Disclosed is a battery charger including a battery cell, a reference voltage generating section, an A/D converting section including an A/D converter and a control section. The reference voltage generating section includes a first reference voltage circuit generating a first reference voltage and a second reference voltage circuit generating a second reference voltage equal to the first reference voltage. To diagnose the A/D converter, the first reference voltage circuit is used. To diagnose the first reference voltage circuit, a second A/D conversion value obtained by A/D converting a second divided voltage of the second reference voltage via the A/D converter using the first reference voltage is compared with a first reference value obtained by A/D converting a first divided voltage of the first reference voltage via the A/D converter using the first reference voltage when the first reference voltage circuit is normal.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: April 8, 2014
    Assignee: Oki Semiconductor Co., Ltd.
    Inventor: Yukihiro Kita
  • Patent number: 8193013
    Abstract: A method of producing a semiconductor optical sensor element includes the steps of: forming an oxide film on a silicon carbide substrate; forming a gate electrode layer on the oxide film; patterning the gate electrode layer to form a gate electrode; and processing thermally the gate electrode layer or the gate electrode under an oxidation environment. Further, the gate electrode layer or the gate electrode is thermally processed under the oxidation environment at a temperature between 750° C. and 900° C.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: June 5, 2012
    Assignee: Oki Semiconductor Co., Ltd.
    Inventor: Yukihiro Kita
  • Publication number: 20120001588
    Abstract: Disclosed is a battery charger including a battery cell, a reference voltage generating section, an A/D converting section including an A/D converter and a control section. The reference voltage generating section includes a first reference voltage circuit generating a first reference voltage and a second reference voltage circuit generating a second reference voltage equal to the first reference voltage. To diagnose the A/D converter, the first reference voltage circuit is used. To diagnose the first reference voltage circuit, a second A/D conversion value obtained by A/D converting a second divided voltage of the second reference voltage via the A/D converter using the first reference voltage is compared with a first reference value obtained by A/D converting a first divided voltage of the first reference voltage via the A/D converter using the first reference voltage when the first reference voltage circuit is normal.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 5, 2012
    Applicant: OKI SEMICONDUCTOR CO., LTD.
    Inventor: Yukihiro Kita
  • Patent number: 8071946
    Abstract: The light sensor according to an exemplary embodiment of the present invention is a multi-function light sensor that is equipped at low cost with both an ultraviolet light sensor and a visible light sensor and suppresses leak current between adjacent elements on the same substrate. The light sensor is equipped with a SOI substrate, formed from a silicon oxide insulating film and a silicon semiconductor layer made up from single crystal silicon, on a silicon substrate. Photodiodes PD1 and PD2 are formed on the silicon substrate, and a photodiode UV-PD, and main portions (source, drain and channel regions) of a MOSFET configuring a control circuit, are formed in the silicon semiconductor layer on the insulating film.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: December 6, 2011
    Assignee: Oki Semiconductor Co., Ltd.
    Inventor: Yukihiro Kita
  • Publication number: 20100164032
    Abstract: A method of producing a semiconductor optical sensor element includes the steps of: forming an oxide film on a silicon carbide substrate; forming a gate electrode layer on the oxide film; patterning the gate electrode layer to form a gate electrode; and processing thermally the gate electrode layer or the gate electrode under an oxidation environment. Further, the gate electrode layer or the gate electrode is thermally processed under the oxidation environment at a temperature between 750° C. and 900° C.
    Type: Application
    Filed: December 8, 2009
    Publication date: July 1, 2010
    Inventor: Yukihiro KITA
  • Publication number: 20100032569
    Abstract: The light sensor according to an exemplary embodiment of the present invention is a multi-function light sensor that is equipped at low cost with both an ultraviolet light sensor and a visible light sensor and suppresses leak current between adjacent elements on the same substrate. The light sensor is equipped with a SOI substrate, formed from a silicon oxide insulating film and a silicon semiconductor layer made up from single crystal silicon, on a silicon substrate. Photodiodes PD1 and PD2 are formed on the silicon substrate, and a photodiode UV-PD, and main portions (source, drain and channel regions) of a MOSFET configuring a control circuit, are formed in the silicon semiconductor layer on the insulating film.
    Type: Application
    Filed: July 31, 2009
    Publication date: February 11, 2010
    Applicant: OKI SEMICONDUCTOR CO., LTD.
    Inventor: Yukihiro Kita
  • Patent number: 7403090
    Abstract: The invention is applicable to a characteristic adjustment method for an inductor formed by laminating a plurality of coils and electrically connecting these coils by a through hole, and is aimed at providing a method which can easily adjust the characteristic of the inductor with a simple configuration. The method comprises determining a part of the coil in an outermost layer as an adjustment area, and not forming the through hole below the adjustment area, and removing at least a part of the adjustment area after the coil in the outermost layer is formed.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: July 22, 2008
    Assignee: Oki Electric Industry Co., Ltd.
    Inventor: Yukihiro Kita
  • Publication number: 20070018768
    Abstract: The invention is applicable to a characteristic adjustment method for an inductor formed by laminating a plurality of coils and electrically connecting these coils by a through hole, and is aimed at providing a method which can easily adjust the characteristic of the inductor with a simple configuration. The method comprises determining a part of the coil in an outermost layer as an adjustment area, and not forming the through hole below the adjustment area, and removing at least a part of the adjustment area after the coil in the outermost layer is formed.
    Type: Application
    Filed: April 13, 2006
    Publication date: January 25, 2007
    Inventor: Yukihiro Kita