Patents by Inventor Nobuyuki Yasuda

Nobuyuki Yasuda 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).

  • Wave-shaping circuit for digital signal
    Patent number: 4449061
    Abstract: A wave-shaping circuit for digital signal includes a slice or clipping circuit for slicing or clipping an input digital signal with a predetermined threshold level; a detecting circuit for detecting the pulse widths of high and low level portions of the sliced digital signal; and a control circuit which lowers the threshold level of the slice circuit, when the pulse width of the high level portion of the digital signal is short with respect to the normalized digital signal, and rises the threshold level of the slice circuit, when the pulse width of the low level portion of the digital signal is short with respect to the normalized digital signal.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: May 15, 1984
    Assignee: Sony Corporation
    Inventors: Nobuyuki Yasuda, Kentaro Odaka
  • Switching apparatus for the recording and reproducing of PCM or video signals
    Patent number: 4398219
    Abstract: A switching apparatus for PCM or video signals is disclosed which includes a circuit detecting the information inherent to a PCM signal and discriminating whether the signal recorded on a record medium is the PCM signal or video signal and a circuit automatically switching the PCM signal and the video signal.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: August 9, 1983
    Assignee: Sony Corporation
    Inventor: Nobuyuki Yasuda