Patents by Inventor Nobukazu Ooba

Nobukazu Ooba 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).

  • Signal processing circuit of rotation detector and rotation angle detector
    Patent number: 8400143
    Abstract: A signal processing circuit for a rotation detector includes a rotational direction determining portion, an effective edge determining portion, a normal-rotation pulse request holding portion, a reverse-rotation pulse request holding portion, an output request signal outputting portion, a pulse outputting portion, a first resetting portion, and a second resetting portion. When one of the holding portions holds an output request signal, the pulse outputting portion outputs a pulse based on the output request signal. When the other one of the holding portions holds an output request signal and then a condition for holding the output request signal that is already held by the one of the holding portions is satisfied in a state where the one of the holding portions holds the output request signal, the second resetting portion resets the output request signal held by the other one of the holding portion.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: March 19, 2013
    Assignee: Denso Corporation
    Inventors: Norihiro Kurumado, Nobukazu Ooba
  • Signal processing circuit of rotation detector and rotation angle detector
    Publication number: 20100225308
    Abstract: A signal processing circuit for a rotation detector includes a rotational direction determining portion, an effective edge determining portion, a normal-rotation pulse request holding portion, a reverse-rotation pulse request holding portion, an output request signal outputting portion, a pulse outputting portion, a first resetting portion, and a second resetting portion. When one of the holding portions holds an output request signal, the pulse outputting portion outputs a pulse based on the output request signal. When the other one of the holding portions holds an output request signal and then a condition for holding the output request signal that is already held by the one of the holding portions is satisfied in a state where the one of the holding portions holds the output request signal, the second resetting portion resets the output request signal held by the other one of the holding portion.
    Type: Application
    Filed: March 4, 2010
    Publication date: September 9, 2010
    Applicant: DENSO CORPORATION
    Inventors: Norihiro Kurumado, Nobukazu Ooba