Patents by Inventor Michael D. Grote

Michael D. Grote 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 system with a controlled beam spot
    Patent number: 5489824
    Abstract: A deflection apparatus produces a field gradient that reduces a tendency of a major axis of a beam spot to become elongated at each corner, at each end of a horizontal axis and at each end of a vertical axis of a display screen relative to the beam spot at the center of the display screen. A beam spot stigmator causes the beam spot to be substantially anastigmatic at each of the corners, the end of the horizontal axis and the end of the vertical axis of the display screen.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: February 6, 1996
    Assignee: RCA Thomson Licensing Corporation
    Inventors: Michael D. Grote, Jeffrey P. Johnson, Dennis J. Bechis
  • Deflection system with a pair of quadrupole arrangements
    Patent number: 5327051
    Abstract: A deflection apparatus includes a pair of quadrupole arrangements for producing a pair of quadrupole fields in a beam path of an electron beam at different distances from a display screen. In an embodiment of the invention, the first and second quadrupole arrangements and a main deflection field producing arrangement cooperate to converge three electron beams, R, G and B, with one another.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: July 5, 1994
    Assignee: RCA Thomson Licensing Corporation
    Inventors: Jeffrey P. Johnson, Michael D. Grote
  • Deflection system with a controlled beam spot
    Patent number: 5028850
    Abstract: A deflection apparatus produces a field gradient that reduces a tendency of a major axis of a beam spot to become elongated at each corner, at each end of a horizontal axis and at each end of a vertical axis of a display screen relative to the beam spot at the center of the display screen. A beam spot stigmator causes the beam spot to be substantially anastigmatic at each of the corners, the end of the horizontal axis and the end of the vertical axis of the display screen.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: July 2, 1991
    Assignee: RCA Licensing Corporation
    Inventors: Michael D. Grote, Jeffrey P. Johnson, Dennis J. Bechis