Patents by Inventor Satoshi YASE

Satoshi YASE 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: 10599965
    Abstract: An RF tag circuit connected to an antenna and a load is provided. The RF tag circuit includes: a rectification circuit rectifying a radio wave received by the antenna and supplying DC power; a matching circuit having a changeable impedance and disposed between the antenna and the rectification circuit; a control part repeatedly controlling activation and stopping of the load; and an adjustment part changing the impedance of the matching circuit in a predetermined direction, storing a first electric power generated by the rectification circuit when a predetermined time has elapsed after the load is activated, and changing the impedance of the matching circuit based on a magnitude relationship between a second electric power generated by the rectification circuit when the predetermined time has elapsed after the load is activated at a timing after the first electric power is generated and the stored first electric power.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: March 24, 2020
    Assignee: OMRON Corporation
    Inventors: Satoshi Yase, Tetsuya Nosaka
  • Patent number: 10572788
    Abstract: An RF tag that includes a limiter and is capable of satisfactorily adjusting an impedance of a matching circuit is provided. The RF tag includes a variable load unit of which an amount of power consumption is changeable and a control unit that is capable of executing an impedance adjusting process of adjusting the impedance of the matching circuit such that an output voltage of a rectification circuit becomes a maximum and executes the impedance adjusting process after reducing the output voltage of the rectification circuit to a voltage less than a limiter voltage by adjusting the amount of power consumption of the variable load unit when a predetermined condition is satisfied.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: February 25, 2020
    Assignee: OMRON Corporation
    Inventors: Satoshi Yase, Tetsuya Nosaka
  • Patent number: 10555057
    Abstract: A wireless sensor system includes a sensor tag configured to include a radio frequency tag and a communication device configured to wirelessly communicate with one or more sensor tags. Each of the sensor tags is configured to receive a measurement signal from one or more sensor circuits and stores identification information capable of being distinguished from other sensor tags. The communication device includes a transmission means configured to transmit a command signal to the one or more sensor tags and the command signal includes designation information for designating a sensor target serving as an object. Each of the sensor tags generates measurement data on the basis of the measurement signal if the designation information included in the command signal received from the communication device matches its own stored identification information and starts transmission of a response signal including the generated measurement data when a predetermined response start condition is satisfied.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: February 4, 2020
    Assignee: OMRON Corporation
    Inventors: Yahiro Koezuka, Tetsuya Nosaka, Satoshi Yase
  • Publication number: 20190334384
    Abstract: A tag circuit which allows a load connectable thereto to have a wider power consumption range and which is usable in a wider input power range is provided. The tag circuit includes: a control part which is configured to respond to a command extracted from a radio wave received by an antenna by controlling a load; and a rectifying part which is configured to generate DC power to be supplied to the control part and DC power to be supplied to the load by converting a radio wave received by the antenna into DC power, the rectifying part being capable of changing power conversion characteristics of converting the radio wave received by the antenna into DC power to be supplied to the load.
    Type: Application
    Filed: October 26, 2017
    Publication date: October 31, 2019
    Applicant: OMRON Corporation
    Inventors: Satoshi YASE, Tetsuya NOSAKA
  • Patent number: 10331991
    Abstract: An RF tag circuit including a power storage unit is provided, in which an increase in time required for a voltage change occurring when an impedance is adjusted is reduced. The RF tag circuit is connected to an antenna and a load. The RF tag circuit includes a rectification circuit, a matching circuit, a power storage unit, and a control unit. The rectification circuit rectifies a radio wave received by the antenna and supplies DC power. The matching circuit, of which an impedance is changeable, is interposed between the antenna and the rectification circuit. The power storage unit stores DC power input from the rectification circuit and supplies the stored DC power to the load. The control unit disconnects the power storage unit from the RF tag circuit and adjusts the impedance of the matching circuit such that the amount of the power supplied by the rectification circuit increases.
    Type: Grant
    Filed: August 15, 2018
    Date of Patent: June 25, 2019
    Assignee: OMRON Corporation
    Inventors: Satoshi Yase, Tetsuya Nosaka
  • Publication number: 20190180157
    Abstract: An RF tag circuit including a power storage unit is provided, in which an increase in time required for a voltage change occurring when an impedance is adjusted is reduced. The RF tag circuit is connected to an antenna and a load. The RF tag circuit includes a rectification circuit, a matching circuit, a power storage unit, and a control unit. The rectification circuit rectifies a radio wave received by the antenna and supplies DC power. The matching circuit, of which an impedance is changeable, is interposed between the antenna and the rectification circuit. The power storage unit stores DC power input from the rectification circuit and supplies the stored DC power to the load. The control unit disconnects the power storage unit from the RF tag circuit and adjusts the impedance of the matching circuit such that the amount of the power supplied by the rectification circuit increases.
    Type: Application
    Filed: August 15, 2018
    Publication date: June 13, 2019
    Applicant: OMRON Corporation
    Inventors: Satoshi YASE, Tetsuya NOSAKA
  • Publication number: 20190180158
    Abstract: An RF tag circuit connected to an antenna and a load is provided. The RF tag circuit includes: a rectification circuit rectifying a radio wave received by the antenna and supplying DC power; a matching circuit having a changeable impedance and disposed between the antenna and the rectification circuit; a control part repeatedly controlling activation and stopping of the load; and an adjustment part changing the impedance of the matching circuit in a predetermined direction, storing a first electric power generated by the rectification circuit when a predetermined time has elapsed after the load is activated, and changing the impedance of the matching circuit based on a magnitude relationship between a second electric power generated by the rectification circuit when the predetermined time has elapsed after the load is activated at a timing after the first electric power is generated and the stored first electric power.
    Type: Application
    Filed: August 15, 2018
    Publication date: June 13, 2019
    Applicant: OMRON Corporation
    Inventors: Satoshi YASE, Tetsuya NOSAKA
  • Publication number: 20190080214
    Abstract: An RF tag that includes a limiter and is capable of satisfactorily adjusting an impedance of a matching circuit is provided. The RF tag includes a variable load unit of which an amount of power consumption is changeable and a control unit that is capable of executing an impedance adjusting process of adjusting the impedance of the matching circuit such that an output voltage of a rectification circuit becomes a maximum and executes the impedance adjusting process after reducing the output voltage of the rectification circuit to a voltage less than a limiter voltage by adjusting the amount of power consumption of the variable load unit when a predetermined condition is satisfied.
    Type: Application
    Filed: August 14, 2018
    Publication date: March 14, 2019
    Applicant: OMRON Corporation
    Inventors: Satoshi YASE, Tetsuya NOSAKA
  • Publication number: 20180255373
    Abstract: A wireless sensor system includes a sensor tag configured to include a radio frequency tag and a communication device configured to wirelessly communicate with one or more sensor tags. Each of the sensor tags is configured to receive a measurement signal from one or more sensor circuits and stores identification information capable of being distinguished from other sensor tags. The communication device includes a transmission means configured to transmit a command signal to the one or more sensor tags and the command signal includes designation information for designating a sensor target serving as an object. Each of the sensor tags generates measurement data on the basis of the measurement signal if the designation information included in the command signal received from the communication device matches its own stored identification information and starts transmission of a response signal including the generated measurement data when a predetermined response start condition is satisfied.
    Type: Application
    Filed: December 13, 2017
    Publication date: September 6, 2018
    Applicant: OMRON Corporation
    Inventors: Yahiro KOEZUKA, Tetsuya NOSAKA, Satoshi YASE