Toshiba Denzai Kabushiki Kaisha

Mitsuhiro Hamaguchi

Katsuyuki Ide

Nanjou Aoike

Hisao Kobayashi

Nobuo Shibano

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.

Large size image display apparatus

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.

Growing community of inventors

Yokohama, Japan

Mitsuhiro Hamaguchi