Patents by Inventor Hisao Sakamoto

Hisao Sakamoto 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: 9467654
    Abstract: A local video-conference terminal device includes a wide-angle camera lens, a camera image correction control unit that performs distortion correction processing on an image included in digital video signal from the wide-angle camera lens, a camera image correction table storage unit including correction tables for the distortion correction processing regarding a partial area of the image, a video display unit displaying the digital video signal after distortion correction, and a camera display switching key outputting a signal to select an image correction table. The camera image correction control unit performs the distortion correction processing on the image included in digital video signal using the image correction table selected by switching through the camera display switching key.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: October 11, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Kiyoshi Kasatani, Hisao Sakamoto
  • Publication number: 20150109401
    Abstract: A local video-conference terminal device includes a wide-angle camera lens, a camera image correction control unit that performs distortion correction processing on an image included in digital video signal from the wide-angle camera lens, a camera image correction table storage unit including correction tables for the distortion correction processing regarding a partial area of the image, a video display unit displaying the digital video signal after distortion correction, and a camera display switching key outputting a signal to select an image correction table. The camera image correction control unit performs the distortion correction processing on the image included in digital video signal using the image correction table selected by switching through the camera display switching key.
    Type: Application
    Filed: May 16, 2013
    Publication date: April 23, 2015
    Inventors: Kiyoshi Kasatani, Hisao Sakamoto
  • Publication number: 20070009653
    Abstract: A material for an inner magnetic shield which has rust preventing properties, good degreasing and washing properties, no danger of generating corrosive gases, and good press workability is provided. This material has coating film of an organic resin consisting essentially of C and H, or of C, H, and O, or of C, H, O, and N with a thickness of 0.3-5 ?m on at least one side of a cold rolled steel sheet having a surface roughness of 0.2-3 ?m Ra. This material can be manufactured by a step of annealing a cold rolled steel sheet, a step of adjusting the surface roughness of the annealed cold rolled steel sheet to 0.2-3 ?m Ra, and a step of forming an organic resin coating film consisting essentially of C and H, or of C, H, and O, or of C, H, O, and N and having a thickness of 0.3-5 ?m on at least one side of the cold rolled steel sheet.
    Type: Application
    Filed: September 18, 2006
    Publication date: January 11, 2007
    Inventors: Yoshikazu Yamanaka, Shouichi Tsunematsu, Sachio Matsuo, Hisao Sakamoto, Kenichiro Kobayashi
  • Publication number: 20060096668
    Abstract: An inner magnetic shield material for use in manufacturing an inner magnetic shield to be installed inside a color picture tube comprises a steel strip having a coating film of an organic resin which consists essentially of C and H, or of C, H, and O, or of C, H, O, and N on at least one surface of the steel strip, wherein the at least one surface of the steel strip has a surface roughness (Ra) of 0.2-3 ?m and the organic resin coating film has a thickness (T) of 0.1-6 ?m. Preferably, the ratio T/Ra is in the range of 0.2-4.0. The organic resin coating film contains particles of a wax dispersed therein, wherein the ratio (?/T) of average particle diameter (?) of the wax to film thickness (T) is in the range of 0.5-5, and the content of the wax in the film is such that 2-20% of the surface of the coating film is occupied by the wax when the surface is observed under an electron microscope.
    Type: Application
    Filed: June 26, 2003
    Publication date: May 11, 2006
    Inventors: Yoshikazu Yamanaka, Hisao Sakamoto, Kenichiro Kobayashi, Sachio Matsuo
  • Publication number: 20040048089
    Abstract: A material for an inner magnetic shield which has rust preventing properties, good degreasing and washing properties, no danger of generating corrosive gases, and good press workability is provided. This material has coating film of an organic resin consisting essentially of C and H, or of C, H, and O, or of C, H, O, and N with a thickness of 0.3-5 &mgr;m on at least one side of a cold rolled steel sheet having a surface roughness of 0.2-3 &mgr;m Ra. This material can be manufactured by a step of annealing a cold rolled steel sheet, a step of adjusting the surface roughness of the annealed cold rolled steel sheet to 0.2-3 &mgr;m Ra, and a step of forming an organic resin coating film consisting essentially of C and H, or of C, H, and O, or of C, H, O, and N and having a thickness of 0.3-5 &mgr;m on at least one side of the cold rolled steel sheet.
    Type: Application
    Filed: October 14, 2003
    Publication date: March 11, 2004
    Inventors: Yoshikazu Yamanaka, Shouichi Tsunematsu, Sachio Matsuo, Hisao Sakamoto, Kenichiro Kobayashi