US PATENT SUBCLASS 345 / 94
.~.~.~.~ Waveform generation

Current as of: June, 1999
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345 /   HD   COMPUTER GRAPHICS PROCESSING, OPERATOR INTERFACE PROCESSING, AND SELECTIVE VISUAL DISPLAY SYSTEMS

30  DF  PLURAL PHYSICAL DISPLAY ELEMENT CONTROL SYSTEM (E.G., NON-CRT) {4}
55  DF  .~ Display elements arranged in matrix (e.g., rows and columns) {10}
84  DF  .~.~ Light-controlling display elements {6}
87  DF  .~.~.~ Liquid crystal display elements (LCD) {9}
94.~.~.~.~ Waveform generation {3}
95  DF  .~.~.~.~.~> Three or more voltages
96  DF  .~.~.~.~.~> Field period polarity reversal
97  DF  .~.~.~.~.~> Ferroelectric liquid crystal elements

DEFINITION

Classification: 345/94

Waveform generation:

(under subclass 87) Subject matter wherein the selective electrical control includes a source for applying specific waveforms or particular voltages to the display elements*.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for waveform generation for a segmented liquid crystal display.

208+, for waveform generator coupled to a generic display device.