G - Physics – 09 – G
Patent
G - Physics
09
G
375/39
G09G 3/00 (2006.01) G01R 13/40 (2006.01) G02F 1/1343 (2006.01)
Patent
CA 1174388
ABSTRACT Two signal traces are displayed simultaneously on an electro optic display such as a liquid crystal display. The display may be in cartesian format having mX electrodes and nY electrodes in which case the X electrodes are in strip form whilst each Y electrode comprises two or more interleaved components Ya, Yb. Thus each XY intersection may be addressed by a zero voltage at XYa, or XYb, with above threshold voltages elsewhere. A series of m different coded waveforms are generated and applied a different one to each X electrode. The two traces are sampled and converted to digital sample values. Coded waveforms are generated and applied to each YaYb electrode contemporaneously with those applied to the X electrodes; the codes being generated are selected from the m different codes and relate to the position of the Y electrode and the sample value to be displayed. The coded waveforms may be binary codes such as pseudo random codes. priority encoder allocates a priority to sample values of the two trace signals.
380683
Gowling Lafleur Henderson Llp
National Research Development Corporation
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