Patents Assigned to Kabushiki Kaisha Toyoseikiseisakusho
  • Method and apparatus to measure amount of movement using granular speck pattern generated by reflecting laser beam
    Patent number: 7257510
    Abstract: A granular speck pattern is generated by a reflecting laser beam as an object to be measured is irradiated with a laser beam. This granular speck pattern is directly picked up as image index by a line sensor. An A/D converter converts an analog signal supplied from the line sensor to a digital signal, a processing unit calculates the amount of movement of the object on the basis of movement of a pixel interval of the granular speck pattern. A display device displays the amount of movement calculated by said processing unit.
    Type: Grant
    Filed: October 5, 2004
    Date of Patent: August 14, 2007
    Assignee: Kabushiki Kaisha Toyoseikiseisakusho
    Inventor: Kenichiro Kobayashi
  • Method and apparatus for direct image pick-up of granular speck pattern generated by reflecting light of laser beam
    Patent number: 7165007
    Abstract: A granular speck pattern is generated by a reflecting laser beam as an object to be measured is irradiated with a laser beam. This granular speck pattern is directly picked up as an image index by a line sensor. An A/D converter converts an analog signal supplied from the line sensor to a digital signal, and a processing unit calculates the amount of movement of the object on the basis of movement of a pixel interval of the granular speck pattern. A display device displays the amount of movement calculated by said processing unit.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: January 16, 2007
    Assignee: Kabushiki Kaisha Toyoseikiseisakusho
    Inventors: Kenichiro Kobayashi, Hiroyuki Konno
  • Method and apparatus to measure amount of movement using granular speck pattern generated by reflecting laser beam
    Patent number: 6847910
    Abstract: A granular speck pattern is generated by a reflecting laser beam as an object to be measured is irradiated with a laser beam. This granular speck pattern is directly picked up as image index by a line sensor. An A/D converter converts an analog signal supplied from the line sensor to a digital signal, a processing unit calculates the amount of movement of the object on the basis of movement of a pixel interval of the granular speck pattern. A display device displays the amount of movement calculated by said processing unit.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: January 25, 2005
    Assignee: Kabushiki Kaisha Toyoseikiseisakusho
    Inventor: Kenichiro Kobayashi