Patents by Inventor Seijiro Hayashi

Seijiro Hayashi 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).

  • Transversal type automatic phase and amplitude equalizer
    Patent number: 4071827
    Abstract: A transversal type automatic equalizer includes circuits for differentiating the equalized signal, sampling the equalized signal under the control of a timing signal, and generating an error signal from the sampled signal. The differentiated and error signals are multiplied together and a variable phase shifter phase shifts the timing signal in response to their product to provide optimum equalization.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: January 31, 1978
    Assignee: Nippon Electric Co., Ltd.
    Inventors: Shin'ichi Koike, Seijiro Hayashi, Michio Takayama