Patents by Inventor Souichi Shinjo

Souichi Shinjo 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).

  • Circuit for discriminating received signal modulation type
    Patent number: 5600673
    Abstract: A circuit for discriminating the modulation type of a received signal capable of discriminating the modulation type at high speed.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: February 4, 1997
    Assignee: Kabushiki Kaisha Kenwood
    Inventors: Kimiyoshi Kimura, Kenichi Shiraishi, Souichi Shinjo
  • MSK modulator having a digital quadrature reference waveform generator
    Patent number: 5216391
    Abstract: An MSK modulator providing a high precision digital phase adjustment with a simple circuit structure. A sample data of a sine wave or cosine wave is read from a memory at an address calculated from an initial address value. The initial address value is set in accordance with the amount of phase to be adjusted. A predetermined number of sample data read from the memory is held, outputted in a predetermined order, and converted into an analog signal. The phase of the converted analog signal is adjusted, and thereafter multiplied by an input baseband signal. The multiplied result is outputted as a modulation signal.
    Type: Grant
    Filed: April 22, 1992
    Date of Patent: June 1, 1993
    Assignee: Kabushiki Kaisha Kenwood
    Inventors: Kenichi Shiraishi, Souichi Shinjo, Shunichi Tada