Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-11-29
1998-04-28
Saras, Steven
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
3151694, G09G 328, G09G 310
Patent
active
057450862
ABSTRACT:
A plasma panel, incorporating the invention, includes circuitry for applying row signals sequentially to a plurality of row electrodes. Each row signal includes a set-up period, an address period and a sustain period. A row signal during the set-up period includes both a positive-going ramp voltage and a negative-going ramp voltage, both ramp voltages causing a discharge of each pixel site along an associated row electrode. Both ramp voltages exhibit a slope that is set to assure that current flow through each pixel site remains in a positive resistance region of the gas's discharge characteristic, thus assuring a relatively constant voltage drop across the discharging gas, thus resulting in predictable wall voltage states. The set-up period thereby creates standardized wall potentials at each pixel site along each row electrode. Address circuitry applies, during the address period, data pulses to a plurality of column electrodes to enable selective discharge of the pixel sites in accordance with data pulses and in synchronism with the row signals.
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Bell Paul A.
Plasmaco Inc.
Saras Steven
LandOfFree
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