Patents by Inventor Daisuke Katsuta

Daisuke Katsuta 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: 7272253
    Abstract: An image input can be executed without any influence of physical conditions of an inspection object and environment such as installation area by utilizing a cordless type image pickup apparatus in the excellent portability combining a lighting apparatus to a digital camera. On the occasion of picking up an image of such inspection object, marks of the shape such as the rectangular shape, circular shape and linear line shape and marks of the shape combining the linear lines (plus sign (+), capital letter L or cross (+)) of known size are allocated within the same image and these marks are extracted simultaneously. Thereby, compensation process for the magnifying factor, position and tilt is conducted using the marks allocated in the image with the equal interval. Input data is continuously applied depending on the inspection object to generate a total inspection map by combining such input data.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: September 18, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Daisuke Katsuta, Mineo Nomoto, Tetsuo Taguchi, Masahiro Hotta, Isao Tanaka
  • Publication number: 20060102608
    Abstract: The laser beam machine of the present invention includes: an XY stage on which to rest a workpiece with multiple machining objects arrayed on it, and which moves the workpiece in an XY direction on the basis of NC data; an image acquisition head which is provided in an image acquisition station and has oblique illumination optical system and detection optical system; and a laser machining head which is provided in a laser machining station and has a laser light source, an XY optical beam deflector for deflecting a laser beam in the XY direction on the basis of the deflection control data obtained in accordance with the image signals from each machining object that have been acquired by the image acquisition head, and an irradiation lens for admitting the above-deflected laser beam into each machining object from a substantially perpendicular direction.
    Type: Application
    Filed: November 10, 2005
    Publication date: May 18, 2006
    Inventors: Daisuke Katsuta, Mineo Nomoto, Kazushi Yoshimura
  • Publication number: 20040186740
    Abstract: The present invention relates to a method which provides reliable image information that makes it possible to perform external inspections for defects in the welded parts of piping and the like using images such as movie images, still images and the like. Using a digital camera, digital video camera or the like, the reliability of images can be increased by adding information such as the time and place of imaging, air temperature, humidity, altitude, environment, sounds and the like to images. Furthermore, since imaging data is transmitted to a data managing company via the internet or the like immediately after imaging, the possibility of falsification by the person performing the imaging or the like is eliminated, so that the reliability of the images is increased, thus making it possible to obtain highly reliable image information.
    Type: Application
    Filed: December 12, 2003
    Publication date: September 23, 2004
    Inventors: Daisuke Katsuta, Mineo Nomoto, Michiaki Kurosaki, Tetsuo Taguchi, Shihei Yamashita, Isao Tanaka, Masahiro Hotta
  • Publication number: 20020154811
    Abstract: An image input can be executed without any influence of physical conditions of an inspection object and environment such as installation area by utilizing a cordless type image pickup apparatus in the excellent portability combining a lighting apparatus to a digital camera. On the occasion of picking up an image of such inspection object, marks of the shape such as the rectangular shape, circular shape and linear line shape and marks of the shape combining the linear lines (plus sign (+), capital letter L or cross (+)) of known size are allocated within the same image and these marks are extracted simultaneously. Thereby, compensation process for the magnifying factor, position and tilt is conducted using the marks allocated in the image with the equal interval. Input data is continuously applied depending on the inspection object to generate a total inspection map by combining such input data.
    Type: Application
    Filed: January 25, 2002
    Publication date: October 24, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Daisuke Katsuta, Mineo Nomoto, Tetsuo Taguchi, Masahiro Hotta, Isao Tanaka
  • Patent number: 5319459
    Abstract: An apparatus for identifying positions of pixel defects on a display screen, such as a cathode-ray tube or a liquid crystal display, operates to pick up an image signal of a display screen representing a predetermined image with an imaging camera, shift the image signal of the imaging camera by one pixel in one and another directions with respect to the display screen, and obtain a difference of a signal level between a defective portion and a normal portion on the screen, based on the signals obtained when the image signal of the imaging camera is shifted in one and another directions. The apparatus also serves to calculate a relative inclination between the imaging camera and the display screen for obtaining a difference of a signal level between a defective portion and a normal portion of each pixel. The results make it possible to clearly identify the difference of the signal level between the defective portion and the normal portion.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: June 7, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Jun Mochizuki, Atsushi Yoshida, Toshio Asano, Kinuyo Hagimae, Daisuke Katsuta, Teruo Matsuo, Kazuo Majima, Masao Taniguchi
  • Patent number: 5076697
    Abstract: Light projectors for slit lights are so arranged that at least two slit lines developed by projecting the slit lights on a chip component or the like obliquely thereto intersect each other, and the slit lines are imaged from above the component or the like by TV cameras so as to extend horizontally in the corresponding images. The shapes of the slit lines in the images are analyzed by an image processor, to detect the state change of the chip component or the like, such as the misplacement thereof. Further, if necessary, in order to enhance the contrast of the pattern of the slit line, the slit light is projected by a stroboscopic lamp within the exposure time of the TV camera, for a short time interval which is not longer than the exposure time.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: December 31, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yuji Takagi, Daisuke Katsuta, Seiji Hata