Patents by Inventor Nobuaki Fujimura

Nobuaki Fujimura 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: 7466359
    Abstract: An image-pickup apparatus for capturing an object includes a distance calculating unit for measuring a phase difference (time difference) from the emission of light from a light emitting unit to the reception of reflected light by a light receiving unit for each unit composed of a predetermined number of adjacent pixels of the object to calculate a distance from the image-pickup apparatus to each corresponding pixel unit of the object, and an image processing unit for corresponding the distance calculated in units of the predetermined number of pixels to the image captured by the light receiving unit. The image processing unit supplies a display unit with only pixels corresponding to a predetermined range in the image generated by the distance calculating unit to display the pixels in units of the predetermined number of pixels on the display unit.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: December 16, 2008
    Assignee: Hitachi Kokusai Electric Inc.
    Inventors: Kazuhito Enomoto, Nobuaki Fujimura
  • Patent number: 7460156
    Abstract: A method and apparatus for transmitting a signal between a television camera and a video apparatus. When time-division multiplexing parallel image signals and transmitting them as a serial signal from the camera side to the video apparatus side, a control signal destined from the camera to the video apparatus is also time-division multiplexed. Furthermore, a plurality of kinds of trigger signals may be time-division multiplexed into one serial signal and transmitted from the video apparatus to the camera.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: December 2, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Kazuhito Enomoto, Nobuaki Fujimura, Kazuhisa Yoshihara, Katsumasa Ueno
  • Patent number: 7175348
    Abstract: A slider is formed by a metallic main body, a synthetic resin-made frame, and a pair of end caps. The frame is detachably fitted to outer sides of the main body. Ball rolling grooves are provided in the main body. Return paths and inside grooves of a direction changing path are provided in the frame. An outside groove of the direction changing path are provided in each end cap. A paste-like filler is applied to a boundary portion between the main body and the frame and a boundary portion between the frame and the end cap, and is allowed to cure.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: February 13, 2007
    Assignee: NSK, Ltd.
    Inventors: Nobuaki Fujimura, Toshio Yoshida
  • Publication number: 20060072863
    Abstract: A linear guide device having an appropriate length of a loaded rolling element rolling groove capable of stably suppressing rolling element passage vibrations is provided.
    Type: Application
    Filed: November 30, 2004
    Publication date: April 6, 2006
    Applicants: NSK LTD., NSK PRECISION CO., LTD.
    Inventor: Nobuaki Fujimura
  • Publication number: 20060029307
    Abstract: A slider is formed by a metallic main body, a synthetic resin-made frame, and a pair of end caps. The frame is detachably fitted to outer sides of the main body. Ball rolling grooves are provided in the main body. Return paths and inside grooves of a direction changing path are provided in the frame. An outside groove of the direction changing path are provided in each end cap. A paste-like filler is applied to a boundary portion between the main body and the frame and a boundary portion between the frame and the end cap, and is allowed to cure.
    Type: Application
    Filed: September 6, 2005
    Publication date: February 9, 2006
    Inventors: Nobuaki Fujimura, Toshio Yoshida
  • Patent number: 6957916
    Abstract: A slider is formed by a metallic main body, a synthetic resin-made frame, and a pair of end caps. The frame is detachably fitted to outer sides of the main body. Ball rolling grooves are provided in the main body. Return paths and inside grooves of a direction changing path are provided in the frame. An outside groove of the direction changing path are provided in each end cap. A paste-like filler is applied to a boundary portion between the main body and the frame and a boundary portion between the frame and the end cap, and is allowed to cure.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: October 25, 2005
    Assignee: NSK, Ltd.
    Inventor: Nobuaki Fujimura
  • Publication number: 20050220450
    Abstract: An image-pickup apparatus for capturing an object includes a distance calculating unit for measuring a phase difference (time difference) from the emission of light from a light emitting unit to the reception of reflected light by a light receiving unit for each unit composed of a predetermined number of adjacent pixels of the object to calculate a distance from the image-pickup apparatus to each corresponding pixel unit of the object, and an image processing unit for corresponding the distance calculated in units of the predetermined number of pixels to the image captured by the light receiving unit. The image processing unit supplies a display unit with only pixels corresponding to a predetermined range in the image generated by the distance calculating unit to display the pixels in units of the predetermined number of pixels on the display unit.
    Type: Application
    Filed: March 24, 2005
    Publication date: October 6, 2005
    Inventors: Kazuhito Enomoto, Nobuaki Fujimura
  • Patent number: 6900838
    Abstract: An image signal processing method and an image signal processing apparatus for processing the color component signal obtained from a solid-state image pickup device including an arrangement of a plurality of photoelectric elements and a color filter arranged in the light receiving section of each pixel corresponding to the photoelectric element, an image signal generating apparatus and a computer program product for the image signal processing method. A color component signal is fetched from a designated pixel corresponding to the photoelectric element having a filter that can transmit the green light on a line of the solid-state image pickup device. A color component signal is also fetched from a pixel corresponding to the photoelectric element having a filter for transmitting at least the green light on another line, which pixel is located in the neighborhood of the designated pixel.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: May 31, 2005
    Assignee: Hitachi Denshi Kabushiki Kaisha
    Inventors: Nobuaki Fujimura, Makoto Suzuki, Katsumasa Ueno
  • Patent number: 6869220
    Abstract: Disclosed is a linear guide device in which a rate of change expressed as “Dmax?Dmin”, becomes extremely small where Dmax and Dmin are respectively a local maximum and a local minimum of D, expressed as (dx2?dx1)/dx, which is produced when a steel ball B moves a distance corresponding to a rolling element-to-rolling element span, dx1 is a minute movement quantity of a steel ball B when it moves from one space defined between rolling element rolling grooves 3 and 31 of an element endless circulating raceway 7, to one of curved element circulating R parts 6, and dx2 is a minute movement quantity of another steel ball B when it moves from the other curved element circulating R part 6 to the space while the former steel ball is moved by the minute movement quantity dx1.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: March 22, 2005
    Assignee: NSK Ltd.
    Inventors: Hiroki Yamaguchi, Ryoichi Sato, Shinichi Kasuga, Kenji Kano, Soichiro Kato, Nobuaki Fujimura
  • Publication number: 20040183916
    Abstract: A method and apparatus for transmitting a signal between a television camera and a video apparatus. When time-division multiplexing parallel image signals and transmitting them as a serial signal from the camera side to the video apparatus side, a control signal destined from the camera to the video apparatus is also time-division multiplexed. Furthermore, a plurality of kinds of trigger signals may be time-division multiplexed into one serial signal and transmitted from the video apparatus to the camera.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 23, 2004
    Inventors: Kazuhito Enomoto, Nobuaki Fujimura, Kazuhisa Yoshihara, Katsumasa Ueno
  • Publication number: 20040076349
    Abstract: A slider is formed by a metallic main body, a synthetic resin-made frame, and a pair of end caps. The frame is detachably fitted to outer sides of the main body. Ball rolling grooves are provided in the main body. Return paths and inside grooves of a direction changing path are provided in the frame. An outside groove of the direction changing path are provided in each end cap. A paste-like filler is applied to a boundary portion between the main body and the frame and a boundary portion between the frame and the end cap, and is allowed to cure.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 22, 2004
    Applicant: NSK LTD.
    Inventor: Nobuaki Fujimura
  • Patent number: 6655839
    Abstract: A linear guide device in which a rate of change expressed as “Dmax−Dmin”, becomes extremely small where Dmax and Dmin are respectively a local maximum and a local minimum of D, expressed as (dx2−dx1)/dx, which is produced when a steel ball B moves a distance corresponding to a rolling element-to-rolling element span, dx1 is a minute movement quantity of a steel ball B when it moves from one space defined between rolling element rolling grooves 3 and 31 of an element endless circulating raceway 7, to one of curved element circulating R parts 6, and dx2 is a minute movement quantity of another steel ball B when it moves from the other curved element circulating R part 6 to the space while the former steel ball is moved by the minute movement quantity dx1.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: December 2, 2003
    Assignee: NSK Ltd.
    Inventors: Hiroki Yamaguchi, Ryoichi Sato, Shinichi Kasuga, Kenji Kano, Soichiro Kato, Nobuaki Fujimura
  • Publication number: 20030198409
    Abstract: Disclosed is a linear guide device in which a rate of change expressed as “Dmax−Dmin”, becomes extremely small where Dmax and Dmin are respectively a local maximum and a local minimum of D, expressed as (dx2−dx1)/dx, which is produced when a steel ball B moves a distance corresponding to a rolling element-to-rolling element span, dx1 is a minute movement quantity of a steel ball B when it moves from one space defined between rolling element rolling grooves 3 and 31 of an element endless circulating raceway 7, to one of curved element circulating R parts 6, and dx2 is a minute movement quantity of another steel ball B when it moves from the other curved element circulating R part 6 to the space while the former steel ball is moved by the minute movement quantity dx1.
    Type: Application
    Filed: June 6, 2003
    Publication date: October 23, 2003
    Applicant: NSK LTD.
    Inventors: Hiroki Yamaguchi, Ryoichi Sato, Shinichi Kasuga, Kenji Kano, Soichiro Kato, Nobuaki Fujimura
  • Publication number: 20020025087
    Abstract: Disclosed is a linear guide device in which a rate of change expressed as “Dmax−Dmin”, becomes extremely small where Dmax and Dmin are respectively a local maximum and a local minimum of D, expressed as (dx2−dx1)/dx, which is produced when a steel ball B moves a distance corresponding to a rolling element-to-rolling element span, dx1 is a minute movement quantity of a steel ball B when it moves from one space defined between rolling element rolling grooves 3 and 31 of an element endless circulating raceway 7, to one of curved element circulating R parts 6, and dx2 is a minute movement quantity of another steel ball B when it moves from the other curved element circulating R part 6 to the space while the former steel ball is moved by the minute movement quantity dx1.
    Type: Application
    Filed: July 5, 2001
    Publication date: February 28, 2002
    Applicant: NSK LTD.
    Inventors: Hiroki Yamaguchi, Ryoichi Sato, Shinichi Kasuga, Kenji Kano, Soichiro Kato, Nobuaki Fujimura
  • Patent number: 5245291
    Abstract: Method and apparatus for detecting a length of a cable connecting information equipments are disclosed. A reference signal which is a repetitively occurring signal is transmitted through a cable. A phase difference between the reference signal transmitted through the cable and the reference signal directly transmitted without routing the cable is detected, and a signal representing the cable length is produced based on the detected phase difference.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: September 14, 1993
    Assignee: Hitachi Denshi Kabushiki Kaisha
    Inventor: Nobuaki Fujimura
  • Patent number: 5159275
    Abstract: Method and apparatus for detecting a length of a cable connecting information equipments are disclosed. A reference signal which is a repetitively occurring signal is transmitted through a cable. A phase difference between the reference signal transmitted through the cable and the reference signal directly transmitted without routing the cable is detected, and a signal representing the cable length is produced based on the detected phase difference.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: October 27, 1992
    Assignee: Hitachi Denshi Kabushiki Kaisha
    Inventor: Nobuaki Fujimura