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TadW · 06-19-2006, 06:21 PM

Here is some more info from E Ink mentioning the ghosting effect:

Display Update Modes
The controller (Hecuba, based on an Apollo ASIC, which is used for the 6" E Ink prototype kit) can use one of four waveforms to update the display:

The initialization (INIT) waveform is used to completely erase the display when the controller has been shut down between updates (for example, if the device is powered off). This waveform flashes several times to ensure that any previously displayed image is completely removed.
The grayscale clearing (GC) waveform is used to update the full display with the optimal image quality. This waveform takes approximately 1000 ms (1 second) to rewrite the display. When GC is used, the entire display will flash as the new image is written.
The grayscale update (GU) waveform provides a faster update than GC, with less flashing. However, in some circumstances, use of GU may leave a slight remnant of the previous image on the display.
The monochrome update (MU) waveform provides for a very fast, nonflashing update when only black and white pixels are being updated (e.g. no pixel is transitioning to or from gray). This waveform takes approximately 500 ms to complete.

06-19-2006, 06:21 PM	#6
TadW Uebermensch Posts: 2,583 Karma: 1094606 Join Date: Jul 2003 Location: Italy Device: Kindle	Here is some more info from E Ink mentioning the ghosting effect: Display Update Modes The controller (Hecuba, based on an Apollo ASIC, which is used for the 6" E Ink prototype kit) can use one of four waveforms to update the display: The initialization (INIT) waveform is used to completely erase the display when the controller has been shut down between updates (for example, if the device is powered off). This waveform flashes several times to ensure that any previously displayed image is completely removed. The grayscale clearing (GC) waveform is used to update the full display with the optimal image quality. This waveform takes approximately 1000 ms (1 second) to rewrite the display. When GC is used, the entire display will flash as the new image is written. The grayscale update (GU) waveform provides a faster update than GC, with less flashing. However, in some circumstances, use of GU may leave a slight remnant of the previous image on the display. The monochrome update (MU) waveform provides for a very fast, nonflashing update when only black and white pixels are being updated (e.g. no pixel is transitioning to or from gray). This waveform takes approximately 500 ms to complete.