Patents by Inventor Takurou Kishimoto

Takurou Kishimoto 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).

  • Frequency control device and method for frequency synchronization with multiplex signal by OFDM, receiving device, and communication device
    Patent number: 6314083
    Abstract: The present invention provides a frequency control device for following frequency deviation of OFDM (Orthogonal Frequency Division Multiplexing). On metrics obtained by discrete Fourier transform by a discrete Fourier transform section 1200, calculation is performed to decide which direction, upward or downward, a center of the energy distribution of the obtained metrics deviates from a theoretical center of frequency, to obtain a frequency difference, and an AFC signal in accordance with the frequency difference is generated in the control signal generating section 1350.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: November 6, 2001
    Assignee: Nippon Columbia Co., Ltd.
    Inventors: Takurou Kishimoto, Tadahiko Sakamoto