Patents Assigned to Toshiba Denzai Kabushiki Kaisha
  • Large size image display apparatus
    Patent number: 4635052
    Abstract: A large number of luminous display elements are arrayed on a board, and the quantity of light emitted by each display element is controlled in accordance with a video signal generated by a video signal generator. Each display element is constituted by a discharge lamp and a high frequency generator lighting the same.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: January 6, 1987
    Assignee: Toshiba Denzai Kabushiki Kaisha
    Inventors: Nanjou Aoike, Katsuyuki Ide, Hisao Kobayashi, Mitsuhiro Hamaguchi
  • Video display apparatus
    Patent number: 4581655
    Abstract: In a picture image display apparatus including a large number of display elements which are lighted by digitalized level adjusted light data produced by a video signal, the digitalized level adjusted light data are corrected by the difference between a mean quantity of light and the light quantity of each luminous element so as to light the luminous element during an interval corresponding to the level adjusted light data without using any light quantity adjusting circuit.
    Type: Grant
    Filed: March 30, 1984
    Date of Patent: April 8, 1986
    Assignee: Toshiba Denzai Kabushiki Kaisha
    Inventors: Katsuyuki Ide, Mitsuhiro Hamaguchi, Nobuo Shibano