Patents by Inventor Masaaki Shinji

Masaaki Shinji 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).

  • Digital signal reception system
    Patent number: 4320523
    Abstract: The error rate performance of a digital radio system which is deteriorated due to inband interference components can be effectively improved by adopting the present digital signal reception technique. According to the present invention, a narrow band band-elimination filter removes the interference, and after the digital signal is regenerated, the spectrum, which is removed by said band-elimination filter, is recovered from the regenerated digital signal. The recovered digital signal is added to the original one, and is applied to the regenerator. Thus, even though an interference component interfers with the digital signal in the same pass-band, said interference component is removed by the present invention and one can obtain the digital signal without the interference component.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: March 16, 1982
    Assignee: Nippon Telegraph & Telephone Public Corporation
    Inventors: Izumi Horikawa, Masaaki Shinji