Patents by Inventor Sadami Sekiguchi

Sadami Sekiguchi 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).

  • Deflection yoke and cathode-ray tube apparatus with the same
    Patent number: 6756726
    Abstract: In a semi-toroidal deflection yoke, a middle point CL(M) of an entire length along a tube axis from a large-diameter portion to a small-diameter portion of a magnetic core lies on a small-diameter portion side of a horizontal deflection coil relative to a point lying at a distance of 0.41×HL along the tube axis from a large-diameter portion of the horizontal deflection coil, where HL is an entire length of the horizontal deflection coil along the tube axis. The deflection yoke deflects electron beams efficiently, reducing the deflection electric power the deflection yoke requires. A cathode ray tube provided with the deflection yoke can suppress pincushion type distortion which may occur in the vertical direction of a screen, and can therefore display images of satisfactory quality.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: June 29, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masaru Ogawa, Sadami Sekiguchi, Tadahiro Kojima, Takashi Murai
  • Deflection yoke and cathode-ray tube apparatus with the same
    Publication number: 20030222566
    Abstract: In a semi-toroidal deflection yoke, a middle point CL(M) of an entire length along a tube axis from a large-diameter portion to a small-diameter portion of a magnetic core lies on a small-diameter portion side of a horizontal deflection coil relative to a point lying at a distance of 0.41×HL along the tube axis from a large-diameter portion of the horizontal deflection coil, where HL is an entire length of the horizontal deflection coil along the tube axis. The deflection yoke deflects electron beams efficiently, reducing the deflection electric power the deflection yoke requires. A cathode ray tube provided with the deflection yoke can suppress pincushion type distortion which may occur in the vertical direction of a screen, and can therefore display images of satisfactory quality.
    Type: Application
    Filed: June 20, 2003
    Publication date: December 4, 2003
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Masaru Ogawa, Sadami Sekiguchi, Tadahiro Kojima, Takashi Murai