Large size image display apparatus
First Claim
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1. Image display apparatus comprising:
- a display board on which a plurality of luminous elements are arrayed;
means for generating a video signal indicative of a video image to be displayed by said display board;
control means responsive to said video signal for generating control signals establishing periods of lighting of said respective luminous elements required to produce an intensity corresponding to said video signal;
each of said display elements comprising a low pressure gas discharge lamp; and
high frequency generator means controlled by said control means for supplying high frequency power to said low pressure gas discharge lamps, said frequency being sufficiently high to decrease an attenuation time of a transient oscillation of said display elements.
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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.
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Citations
12 Claims
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1. Image display apparatus comprising:
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a display board on which a plurality of luminous elements are arrayed; means for generating a video signal indicative of a video image to be displayed by said display board; control means responsive to said video signal for generating control signals establishing periods of lighting of said respective luminous elements required to produce an intensity corresponding to said video signal; each of said display elements comprising a low pressure gas discharge lamp; and high frequency generator means controlled by said control means for supplying high frequency power to said low pressure gas discharge lamps, said frequency being sufficiently high to decrease an attenuation time of a transient oscillation of said display elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification