Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1991-09-27
1994-11-22
Chin, Tommy P.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 98, G09G 336
Patent
active
053673140
ABSTRACT:
A drive circuit for a display apparatus having parallel signal electrodes has at least one voltage selecting circuit, a plurality of signal voltage circuits, one selection signal circuit, and one control signal circuit. The voltage selecting circuit selects one of voltages having different levels in accordance with an input digital video signal. The signal voltage circuits are respectively provided for the signal electrodes, and include two signal lines which are disposed between the voltage selecting circuit and the respective signal electrode. Each of the two signal lines is provided with a input switch, a capacitor and an output switch. The selection signal circuit generates a signal for controlling the two input switches of one of the signal voltage circuits to alternatingly receive a selected voltage from the voltage selecting circuit. The control signal circuit controls the two output switches of the one signal voltage circuit to alternatingly output the voltages toward the respective signal electrode, in an inverted manner with respect to the control of the selection signal circuit.
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Okada Hisao
Tanaka Kuniaki
Au A
Chin Tommy P.
Conlin David G.
Neuner George W.
Sharp Kabushiki Kaisha
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