Patents by Inventor Noburo Nagashima

Noburo Nagashima 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).

  • Connector
    Patent number: 6979226
    Abstract: The present invention relates to a connector which includes a plug unit and a receptacle. The plug unit includes a housing board and a transmission path board. The housing board has a housing board body and first connection terminals and second connection terminals. The transmission path board has a transmission path board body, plural differential signal patterns which are connected to the first connection terminals and the second connection terminals of the housing board, and high pass filters which are connected to each of the differential signal patterns. The receptacle has a receptacle body and pin contacts. According to the present invention, a low-frequency component of a digital signal is attenuated. Thus, since an attenuation factor of the high-frequency component and an attenuation factor of the low-frequency component of the digital signal can be set substantially the same, the digital signal can be transmitted surely.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: December 27, 2005
    Assignee: J.S.T. Mfg. Co., Ltd.
    Inventors: Akihiko Otsu, Keiichi Azuma, Hiroshi Tokita, Noburo Nagashima
  • Connector
    Publication number: 20050032430
    Abstract: The present invention relates to a connector which includes a plug unit and a receptacle. The plug unit includes a housing board and a transmission path board. The housing board has a housing board body and first connection terminals and second connection terminals. The transmission path board has a transmission path board body, plural differential signal patterns which are connected to the first connection terminals and the second connection terminals of the housing board, and high pass filters which are connected to each of the differential signal patterns. The receptacle has a receptacle body and pin contacts. According to the present invention, a low-frequency component of a digital signal is attenuated. Thus, since an attenuation factor of the high-frequency component and an attenuation factor of the low-frequency component of the digital signal can be set substantially the same, the digital signal can be transmitted surely.
    Type: Application
    Filed: July 8, 2004
    Publication date: February 10, 2005
    Inventors: Akihiko Otsu, Keiichi Azuma, Hiroshi Tokita, Noburo Nagashima