Patents by Inventor Kunitaka Ito

Kunitaka Ito 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).

  • Reader/writer and communication method thereof
    Patent number: 7487921
    Abstract: A reader/writer is provided. The reader/writer performing radio communication with a radio communication terminal in close proximity thereto, includes: an antenna which transmits a carrier wave of a predetermined frequency and which receives a composite wave of the carrier wave and a modulated signal of the carrier wave transmitted from the radio communication terminal; a demodulating unit which demodulates the composite wave received by the antenna; a judging unit which judges whether or not it is difficult to detect a modulated component included in the composite wave received by the antenna when the radio communication terminal is in close proximity; and a carrier-wave control unit which reduces a component of the carrier wave input into the demodulating unit when the judging unit judges that it is difficult to detect the modulated component.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: February 10, 2009
    Assignee: Sony Ericsson Mobile Communication Japan, Inc.
    Inventors: Toshiyuki Takahashi, Kunitaka Ito, Kanjiro Shimizu
  • Reader/writer and communication method thereof
    Publication number: 20070051809
    Abstract: A reader/writer is provided. The reader/writer performing radio communication with a radio communication terminal in close proximity thereto, includes: an antenna which transmits a carrier wave of a predetermined frequency and which receives a composite wave of the carrier wave and a modulated signal of the carrier wave transmitted from the radio communication terminal; a demodulating unit which demodulates the composite wave received by the antenna; a judging unit which judges whether or not it is difficult to detect a modulated component included in the composite wave received by the antenna when the radio communication terminal is in close proximity; and a carrier-wave control unit which reduces a component of the carrier wave input into the demodulating unit when the judging unit judges that it is difficult to detect the modulated component.
    Type: Application
    Filed: August 28, 2006
    Publication date: March 8, 2007
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS JAPAN, INC.
    Inventors: Toshiyuki Takahashi, Kunitaka Ito, Kanjiro Shimizu