Patents by Inventor Satie Kuroda

Satie Kuroda 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).

  • Output buffer circuit
    Patent number: 6586973
    Abstract: An output buffer circuit is provided for maintaining the slew rate of output waveforms of the output signal within a predetermined range regardless of changes of load on the output terminal. Series-connected feedback delay circuits (11-14) delay an input signal (IN) on the basis of the potential of an output signal (OUT) obtained through a feedback path (L1). Delay time of each feedback delay circuit varies according to load on an output terminal (2). Delay signals from the feedback delay circuits (11-14) are applied to one inputs of high-output selecting NAND gates (G11-G14), respectively. The NAND gates (G11-G14) also receive the input signal (IN) at their other inputs and output signals to gates of high output transistors (QP1-QP4), respectively. At the rise of the input signal (IN), the high output transistors (QP1-QP4) output the output signal (OUT) in response to the delay signals from the feedback delay circuits (11-14).
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: July 1, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masahiro Yokoyama, Kouji Nasu, Syuichi Shirata, Satie Kuroda, Teruaki Kanzaki, Akihito Uehara