Patents by Inventor Tadashi Oguma

Tadashi Oguma 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: 9512873
    Abstract: A bearing device of embodiment is usable for a hydraulic machine having a rotary shaft of a vertical shaft, with a water tank storing lubrication water, and a bearing pad supporting a skirt member on the rotary shaft in the lubrication water. The bearing device has a first supporting mechanism slidably supporting the bearing pad from the radial direction, and a second supporting mechanism slidably supporting the bearing pad from a bottom portion side in an axial direction. One of a supporting surface supporting the bearing pad in the first supporting mechanism and a supported surface supported by the supporting surface in the bearing pad is formed in a convex shape. One of a supporting surface supporting the bearing pad in the second supporting mechanism and a supported surface supported by the supporting surface in the bearing pad is formed in a convex shape.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: December 6, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadashi Oguma, Makoto Mikami, Than Trong Long, Yasumi Kizaki, Masaji Tsutsui, Fumio Takimoto, Naritoshi Nakagawa
  • Patent number: 9404536
    Abstract: An underwater sliding member of the present embodiment is an underwater sliding member used under water, and has: a base material 11 made of a first metal material; an intermediate layer 12 of a porous structure joined to the base material 11 and made of a second metal material; a corrosion inhibiting layer 122 a part of which is melted and filled into a hole of the porous structure of the intermediate layer 12; and a sliding layer 13 formed on the corrosion inhibiting layer 122 and made of a resin material.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: August 2, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Than Trong Long, Tadashi Oguma, Yasumi Kizaki
  • Publication number: 20140153852
    Abstract: An underwater sliding member of the present embodiment is an underwater sliding member used under water, and has: a base material 11 made of a first metal material; an intermediate layer 12 of a porous structure joined to the base material 11 and made of a second metal material; a corrosion inhibiting layer 122 a part of which is melted and filled into a hole of the porous structure of the intermediate layer 12; and a sliding layer 13 formed on the corrosion inhibiting layer 122 and made of a resin material.
    Type: Application
    Filed: February 6, 2014
    Publication date: June 5, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Than Trong LONG, Tadashi OGUMA, Yasumi KIZAKI
  • Publication number: 20140037451
    Abstract: A bearing device of embodiment is usable for a hydraulic machine having a rotary shaft of a vertical shaft, with a water tank storing lubrication water, and a bearing pad supporting a skirt member on the rotary shaft in the lubrication water. The bearing device has a first supporting mechanism slidably supporting the bearing pad from the radial direction, and a second supporting mechanism slidably supporting the bearing pad from a bottom portion side in an axial direction. One of a supporting surface supporting the bearing pad in the first supporting mechanism and a supported surface supported by the supporting surface in the bearing pad is formed in a convex shape. One of a supporting surface supporting the bearing pad in the second supporting mechanism and a supported surface supported by the supporting surface in the bearing pad is formed in a convex shape.
    Type: Application
    Filed: October 4, 2013
    Publication date: February 6, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tadashi OGUMA, Makoto Mikami, Than Trong Long, Yasumi Kizaki, Masaji Tsutsui, Fumio Takimoto, Naritoshi Nakagawa
  • Patent number: 7265695
    Abstract: A video signal processing apparatus comprises an A/D converter for digitizing an analog video signal, an integration circuit for integrating the digitized video signal within a predetermined integration range, a picture display device for displaying a picture based on an integration output, and a control unit which, when an offset adjustment signal is inputted to the A/D converter, corrects the offset value so as to eliminate a difference between the integration value of the integration circuit and a preliminarily set specified value, and determines whether or not offset adjustment is completed based on the number of times when the corrected offset value is within a range defined by adding a predetermined error to the specified value.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: September 4, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shigeki Kamimura, Tadashi Oguma
  • Publication number: 20050280642
    Abstract: A video signal processing apparatus comprises an A/D converter for digitizing an analog video signal, an integration circuit for integrating the digitized video signal within a predetermined integration range, a picture display device for displaying a picture based on an integration output, and a control unit which, when an offset adjustment signal is inputted to the A/D converter, corrects the offset value so as to eliminate a difference between the integration value of the integration circuit and a preliminarily set specified value, and determines whether or not offset adjustment is completed based on the number of times when the corrected offset value is within a range defined by adding a predetermined error to the specified value.
    Type: Application
    Filed: June 10, 2005
    Publication date: December 22, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigeki Kamimura, Tadashi Oguma
  • Patent number: 6384868
    Abstract: When a sub-image (A) and a sub-image (B) are displayed as semi-moving pictures on a multi-screen, the fields of the input sub-images (A) and (B) are determined. By setting the field determination result as one condition for a write to the memory 114, the sub-images (A) and (B) can be stably written to the memory 114 in either odd fields (ODD) or even fields (EVEN), and can be read and displayed on the screen without flickering characters due to line flicker. Furthermore, when video signals are switched for a channel switch or an input switch, the operation remote controller 501 can issue a switch instruction so that a write to the video memory 509 is stopped according to the generated switch signal, and the image is displayed as a still image. In response to a new input video signal, the number of write increase lines or picture elements for a write to the video memory 509 is set to n. The writing operation is performed m times (m is a natural number) for every other field.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: May 7, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tadashi Oguma
  • Publication number: 20020033899
    Abstract: When a sub-image (A) and a sub-image (B) are displayed as semi-moving pictures on a multi-screen, the fields of the input sub-images (A) and (B) are determined. By setting the field determination result as one condition for a write to the memory 114, the sub-images (A) and (B) can be stably written to the memory 114 in either odd fields (ODD) or even fields (EVEN), and can be read and displayed on the screen without flickering characters due to line flicker. Furthermore, when video signals are switched for a channel switch or an input switch, the operation remote controller 501 can issue a switch instruction so that a write to the video memory 509 is stopped according to the generated switch signal, and the image is displayed as a still image. In response to a new input video signal, the number of write increase lines or picture elements for a write to the video memory 509 is set to n. The writing operation is performed m times (m is a natural number) for every other field.
    Type: Application
    Filed: July 9, 1998
    Publication date: March 21, 2002
    Inventor: TADASHI OGUMA