Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1998-08-05
2000-05-02
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345100, 345208, 345210, G09G 336, G09G 500
Patent
active
060578181
ABSTRACT:
A drive signal for an LCD panel is formed of pulses having a raised cosine shape. Such pulse shape results in a drive signal having minimal harmonic content. The resulting drive signal is less susceptible to low pass filter, signal degradation effects. Regarding STN displays, the degradations which do occur are readily correctable amplitude and phase variations. Regarding TFT panels, the reduced harmonic content, in turn reduces coupling between adjacent panel circuits.
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Bowers Benjamin D.
Hewlett--Packard Company
Hjerpe Richard A.
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