Electro-optic displays, and methods for driving same
AssigneeE Ink Corporation
InventorKenneth R. Crounse
Life of this patent
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Abstract
There are provided methods for driving an electro-optic display having a plurality of display pixels, a such method includes detecting a white-to-white graytone transition on a first pixel; and determining whether a threshold number of cardinal neighbors of the first pixel are not making a graytone transition from white to white, or if the first pixel is a color pixel, and apply a first waveform.
Claims10
A method for driving a color electrophoretic display including a color filter array between a viewer and an electrophoretic medium including black and white particles, the color electrophoretic display having a plurality of display pixels, the method comprising:
- color mapping a source image to a color mapped image for the color electrophoretic display;
- identifying color display pixels from the color mapped image and flagging the color display pixels with a designator;
- using the designator as input for a waveform generating algorithm for determining whether to apply a clearing waveform when transitioning color display pixels, wherein the clearing waveform applied to color display pixels flagged with the designator is a full clearing white-to-white transition waveform;
- and
- applying one or more twiddle pulses to display pixels having all four cardinal neighbors with a next graytone of white and at least one cardinal neighbor that is a color display pixel flagged with the designator.
A method for driving a color electrophoretic display including a color filter array between a viewer and an electrophoretic medium including black and white particles, the color electrophoretic display having a plurality of display pixels, the method comprising:
- color mapping a source image to a color mapped image for the color electrophoretic display;
- identifying color display pixels from the source image and flagging the color display pixels with a designator;
- using the designator as input for a waveform generating algorithm for determining whether to apply a clearing waveform when transitioning color display pixels, wherein the clearing waveform applied to color display pixels flagged with the designator is a full clearing white-to-white transition waveform;
- and
- applying one or more twiddle pulses to display pixels having all four cardinal neighbors with a next graytone of white and at least one cardinal neighbor that is a color display pixel flagged with the designator.
Dependencies are inferred from the claim text.