Patents by Inventor Hiroshi Narise

Hiroshi Narise 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 apparatus for optical gyro
    Patent number: 5289257
    Abstract: A signal processing apparatus for a phase modulation optical gyro includes: a circuit for taking components of frequencies fm, 2fm and 4fm from a photoelectric output signal proportional to an input rotation angular velocity and converting the components to analog signals of a frequency .DELTA.fm; a converter for converting the analog signals to a digital signal; a unit for forming a pair of digital signals shifted in phase by 90.degree.
    Type: Grant
    Filed: January 8, 1992
    Date of Patent: February 22, 1994
    Assignee: Mitsubishi Precision Co., Ltd.
    Inventors: Akihiro Kurokawa, Hiroshi Narise, Takafumi Hirano, Yoshiaki Hayakawa