Patents by Inventor Motoo Nakagawa

Motoo Nakagawa 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: 10769917
    Abstract: A wireless communications system according to an aspect includes a communications terminal, a detection unit, and a control unit. The communications terminal includes a communications unit to communicate wirelessly with a communications partner terminal. The detection unit detects movement of the communications terminal. The control unit controls the communications terminal so as to vary a communicable area of the communications unit. The communicable area is defined relatively to the communications terminal. The control unit varies the communicable area according to at least magnitude of the movement detected by the detection unit.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: September 8, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Koji Imamura, Shinichi Okada, Motoo Nakagawa, Masahiro Kumagawa, Junichi Takahashi
  • Publication number: 20200242580
    Abstract: A shopping assistance system includes a strength acquirer and a determining processor. The strength acquirer is configured to acquire values of a received signal strength indication at a reader device while the reader device performs wireless communication with an electronic tag attached to at least one product. The reader device is configured to perform the wireless communication with the electronic tag by using a radio wave as a medium to read a piece of product information on the at least one product. The determining processor is configured to determine, for each of the at least one product, whether or not the at least one product is an object to be purchased based on a change of the received signal strength indication over time.
    Type: Application
    Filed: September 26, 2018
    Publication date: July 30, 2020
    Inventors: Koji IMAMURA, Junichi TAKAHASHI, Masahiro KUMAGAWA, Motoo NAKAGAWA, Shinichi OKADA
  • Publication number: 20190325723
    Abstract: A wireless communications system according to an aspect includes a communications terminal, a detection unit, and a control unit. The communications terminal includes a communications unit to communicate wirelessly with a communications partner terminal. The detection unit detects movement of the communications terminal. The control unit controls the communications terminal so as to vary a communicable area of the communications unit. The communicable area is defined relatively to the communications terminal. The control unit varies the communicable area according to at least magnitude of the movement detected by the detection unit.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 24, 2019
    Inventors: Koji IMAMURA, Shinichi OKADA, Motoo NAKAGAWA, Masahiro KUMAGAWA, Junichi TAKAHASHI
  • Publication number: 20190213572
    Abstract: A wireless reading system includes a goods path and a reader device. The goods path allows one or more goods held by a customer passing through a customer path to be moved along. The reader device is configured to perform wireless communication, whose medium is radio waves, with one or more electronic tags attached to the one or more goods while the one or more goods are moved along the goods path, thereby reading one or more pieces of goods information on the one or more goods, respectively.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 11, 2019
    Inventors: Koji IMAMURA, Atsushi MARUYAMA, Shinichi OKADA, Motoo NAKAGAWA, Masahiro KUMAGAWA, Shinsuke OGATA
  • Patent number: 7492238
    Abstract: A common terminal 500 is connected to drains of FETs 101 and 102 via a capacitor 400. FETs 111 to 114 are serially connected, and inserted between a source of the FET 101 and a terminal 501 via a capacitor 401. Similarly, each of: FETs 121 to 124; FETs 131 to 133; FETs 141 to 143; FETs 151 to 153; and FETs 161 to 163 is inserted between the source of the FET 101 or an FET 102 and a corresponding one of terminals 502 to 506. This configuration allows a stray capacitance value of a transmission/reception path to be reduced at the time of transmission/reception, thereby obtaining a favorable radio-frequency characteristic.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: February 17, 2009
    Assignee: Panasonic Corporation
    Inventors: Tadayoshi Nakatsuka, Atsushi Suwa, Motoo Nakagawa, Masakazu Adachi
  • Publication number: 20070103252
    Abstract: A common terminal 500 is connected to drains of FETs 101 and 102 via a capacitor 400. FETs 111 to 114 are serially connected, and inserted between a source of the FET 101 and a terminal 501 via a capacitor 401. Similarly, each of: FETs 121 to 124; FETs 131 to 133; FETs 141 to 143; FETs 151 to 153; and FETs 161 to 163 is inserted between the source of the FET 101 or an FET 102 and a corresponding one of terminals 502 to 506. This configuration allows a stray capacitance value of a transmission/reception path to be reduced at the time of transmission/reception, thereby obtaining a favorable radio-frequency characteristic.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 10, 2007
    Inventors: Tadayoshi Nakatsuka, Atsushi Suwa, Motoo Nakagawa, Masakazu Adachi