Drive circuit for providing at least one of the output waveforms

Details Drive circuit for providing at least one of the output waveforms Drive circuit for providing at least one of the output waveforms

1991-02-11

1992-05-05

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

340811, 340805, G02F 113, G09G 300

Patent

active

051113198

ABSTRACT:
A drive circuit comprises a first waveform generator and a second waveform generator. Each waveform generator is capable of generating at least two voltage states and the instantaneous voltage of the first waveform is never less than that of the second waveform by more than a defined amount. The circuit further comprises a plurality of means to produce respectively a plurality of output waveforms by selectively switching to either the first waveform or the second waveform and a gate array to control the selective switching. The arrangement is such that each of the plurality of means to produce respectively a plurality of output waveforms is capable of producing an output waveform having at least four voltage states. The drive circuit produces a plurality of outputs suitable for driving a matrix-addressed display.

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