发明申请
US20060290652A1 Driving scheme for monochrome mode and transition method for monochrome-to-greyscale mode in bi-stable displays
审中-公开
双稳态显示器中单色到灰度模式的单色模式和转换方法的驱动方案
- 专利标题： Driving scheme for monochrome mode and transition method for monochrome-to-greyscale mode in bi-stable displays
- 专利标题（中）： 双稳态显示器中单色到灰度模式的单色模式和转换方法的驱动方案
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申请号： US10573548申请日： 2004-09-24
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公开(公告)号： US20060290652A1公开(公告)日： 2006-12-28
- 发明人: Guofu Zhou , Jan van de Kamer , Mark Johnson , Neculai Ailenei
- 申请人： Guofu Zhou , Jan van de Kamer , Mark Johnson , Neculai Ailenei
- 国际申请： PCT/IB04/51856 WO 20040924
- 主分类号： G09G3/34
- IPC分类号： G09G3/34
摘要：
Image quality is improved when updating a display image (310) in a bi-stable electronic reading device (300, 400) such as one using an electrophoretic display, by providing both monochrome and greyscale images. When an update mode of a pixel (2) of the display changes from a monochrome to greyscale, a compensating pulse (805, 825, 845, 865) is applied. The compensating pulse represents an energy based on the energy difference between: (a) an over-reset pulse (815, 835, 855, 875) used during the greyscale update mode and (b) a standard reset pulse (610, 660) used during the monochrome update mode. Also, a monochrome update waveform (600, 650) includes a standard reset pulse (610, 660) whose duration is substantially less than a duration of an over-reset pulse (815, 835, 855, 875) used in a greyscale update waveform (800, 820, 840 and 860). The monochrome update mode is used in combination with the greyscale update mode when possible.
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