Patents by Inventor Ryuhei Motono

Ryuhei Motono 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).

  • HDB3 code violation detector
    Patent number: 5285459
    Abstract: An HDB3 code violation detector includes a converting part for receiving positive polarity data and negative polarity data from a PCM line and for converting an HDB3 code received via the PCM line into an NRZ signal, and a first judging part receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal is NRZ "1" and for outputting a judgement result. In addition, the detector includes a second judging part receiving the positive polarity data, the negative polarity data and the NRZ signal, for judging whether or not a pattern of the NRZ signal received from the converting part is possible when the NRZ signal has a maximum of three consecutive NRZ "0"s and for outputting a judgement result.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: February 8, 1994
    Assignee: Fujitsu Limited
    Inventors: Yuzo Okuyama, Kazuo Sato, Yamato Tachibana, Ryuhei Motono, Kazuo Takeoka