Patents by Inventor Minoru Iwasaki

Minoru Iwasaki 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).

  • Apparatus for calculating amplitude values of sinusoidal waves
    Patent number: 4073009
    Abstract: The apparatus comprises a sampling hold circuit for sampling the amplitude of a sinusoidal wave at a predetermined frequency, a data sample extracting circuit for extracting two data samples at two points immediately before and after the peak value of the sinusoidal wave, and an operation circuit responsive to the absolute values of the two data samples for calculating the amplitude value of the sinusoidal wave.
    Type: Grant
    Filed: August 26, 1976
    Date of Patent: February 7, 1978
    Assignees: Tokyo Shibaura Denki Kabushiki Kaisha, Tokyo Denryoku Kabushiki Kaisha
    Inventors: Fumio Andow, Tetsuo Matsushima, Minoru Iwasaki