Patents by Inventor Mikio Morohoshi

Mikio Morohoshi 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).

  • Patent number: 5349531
    Abstract: A navigation apparatus utilizing a global positioning system having at least first and second satellite reception antennas installed on a navigation vehicle with a predetermined distance therebetween, a first azimuth computing unit for computing a first azimuth angle of the navigation vehicle from satellite radio waves received at the first and second antennas and a phase difference therebetween, a second azimuth computing unit for computing a second azimuth angle from a time change of antenna positions calculated from the satellite radio wave received at the first or second reception antenna, first and second multiplying units for multiplying outputs of the first and second azimuth computing units with predetermined coefficients respectively, an adding unit for adding outputs of the first and second multiplying units to produce a third azimuth angle, and a coefficient control unit for varying coefficient values of the first and second multiplying units in accordance with either the satellite arrangement or t
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: September 20, 1994
    Assignee: Tokimec Inc.
    Inventors: Kazuteru Sato, Kanshi Yamamoto, Mikio Morohoshi, Noriyuki Akaba, Atsushi Kawakami
  • Patent number: 4831544
    Abstract: An attitude and heading reference detecting apparatus having three gyros and three acceleometers mounted to a navigation vehicle in such a manner that their input axes are made coincident with principal three axial directions of the navigation object, respectively, a magnetic azimuth sensor, a signal transforming section supplied with the outputs from the three gyros, the outputs from the three accelerometers and the output from the magnetic azimuth sensor, a computing section supplied with the output from the signal transforming section and a signal output section supplied with the output from the computing section, for producing an attitude and heading reference signal and for delivering the same to the outside.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: May 16, 1989
    Assignee: Tokyo Keiki Co., Ltd.
    Inventors: Takeshi Hojo, Kanshi Yamamoto, Mikio Morohoshi, Fuyuki Hame
  • Patent number: 4791727
    Abstract: In a gyro apparatus comprising a binnacle, a gyro the spin axis of which is made substantially horizontal, a supporting apparatus for supporting the gyro from the binnacle with a freedom of three axes, a north-seeking apparatus for giving a north-seeking action to the gyro, a follow-up ring following up the gyro around its vertical axis, a servo motor for rotating the follow-up ring by a deviation singal around the vertical axis of teh gyro relative to the follow-up ring and a transmiting apparatus for transmitting an azimuth angle of the spin axis relative to the binnacle to the outside, the gyro apparatus is characterized in that the transmitting apparatus is formed of a digital encoder having a reference angular position transmitting device and a first counter apparatus being made operable by an output signal of the encoder.
    Type: Grant
    Filed: October 20, 1987
    Date of Patent: December 20, 1988
    Assignee: Kabushikikaisha Tokyo Keiki
    Inventors: Takeshi Hojo, Takafumi Nakaishi, Mikio Morohoshi