| 摘要 |
<p>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 m X electrodes and n Y 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 Ya Yb 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 electrodes and the sample value to be displaced. The coded waveforms may be binary codes such as pseudo random codes. A priority encoder allocates a priority to sample values of the two trace signals. </p> |
