Large image display apparatus

Details Large image display apparatus Large image display apparatus

1988-06-17

1989-06-13

Moore, David K.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

3151692, 3151693, 315291, 315DIG4, 315209R, 3151691, 340813, 340767, 340811, 340793, G09G 310

Patent

active

048395641

ABSTRACT:
A large image display apparatus comprises a plurality of discharge lamps each having an anode, a cathode and a light emitting tube, a display board having the plurality of discharge lamps thereon, a heating circuit for heating the cathodes of the plurality of discharge lamps, a power supply circuit for generating a rectified high frequency voltage and biasing the plurality of discharge lamps, an image signal generator for generating an image signal, and a control circuit for controlling the quantity of light emitted from each discharge lamp in response to the image signal.

REFERENCES:
patent: 4241294 (1980-12-01), Fisler
patent: 4488089 (1984-12-01), Shota
patent: 4495445 (1985-01-01), Turney
patent: 4633141 (1986-12-01), Weber
patent: 4635052 (1987-01-01), Aoike et al.
patent: 4645979 (1987-02-01), Chow

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