Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1995-08-21
1998-05-05
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345147, 345210, G09G 332
Patent
active
057481601
ABSTRACT:
A matrix of light emitting devices including a voltage source constructed to repetitiously supply a multi-step voltage waveform and a matrix of rows and columns of pixels, each pixel being connected to the voltage source. A method of driving the matrix including addressing each of the pixels of the matrix by supplying scan and image data activating signals to each of the pixels, the image data activating signal being used to activate a pixel by completing a current path from the pixel to a return for the voltage source, and activating the voltage source to repetitiously supply multi-step waveforms of voltage and sequentially supply each step of each of the multi-step voltage waveforms to the pixels, and addressing each of the pixels in the matrix for each step supplied.
REFERENCES:
patent: 4488150 (1984-12-01), Kanatani
patent: 4554539 (1985-11-01), Graves
patent: 4967192 (1990-10-01), Hirane et al.
patent: 5184114 (1993-02-01), Brown
patent: 5198803 (1993-03-01), Shie et al.
Lee Hsing-Chung
Shieh Chan-Long
So Franky
Hjerpe Richard
Mororola, Inc.
Parsons Eugene A.
Wu Xu-Ming
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