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1. 发明授权

US07623113B2 Method of compensating temperature dependence of driving schemes for electrophoretic displays 失效
标题翻译：补偿电泳显示器驱动方案温度依赖性的方法
公开(公告)号：US07623113B2
公开(公告)日：2009-11-24
申请号：US10571327
申请日：2004-09-09
申请人： Guofu Zhou , Rogier H. M. Cortie , Mark T. Johnson , Jan van de Kamer
发明人： Guofu Zhou , Rogier H. M. Cortie , Mark T. Johnson , Jan van de Kamer
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2011 , G09G3/2014 , G09G3/2081 , G09G2310/061 , G09G2310/068 , G09G2320/041
摘要： An image is updated on a bi-stable display (310) such as an electrophoretic display by providing separate scaling functions (SF1, SF2) for scaling a duration of a reset pulse (R) and a duration of a driving pulse (D) in a drive waveform based on temperature (335). An absolute value of a slope with varying temperatures of the scaling factor (SF1) for the reset pulse (R) is significantly greater than that of the scaling factor (SF2) for the driving pulse (D), while both scaling factors increase with decreasing temperature. Image update time (IUT) is significantly reduced at lower temperatures, while a range of variation of IUT across all temperatures is also reduced. Scaling functions (SF3, SF4) may also be used for scaling a duration of a help reset pulse (H) and/or a duration of one or more shaking pulses (SH1, SH2).
摘要翻译：通过提供用于缩放复位脉冲（R）的持续时间和驱动脉冲（D）的持续时间的分开的缩放函数（SF1，SF2），在诸如电泳显示器的双稳态显示器（310）上更新图像基于温度的驱动波形（335）。复位脉冲（R）的比例因子（SF1）的温度变化的斜率的绝对值明显大于驱动脉冲（D）的比例因子（SF2）的绝对值，而两个缩放因子随着减小而增加温度。图像更新时间（IUT）在较低温度下显着降低，而IUT在所有温度下的变化范围也会降低。缩放功能（SF3，SF4）也可用于缩放帮助复位脉冲（H）的持续时间和/或一个或多个抖动脉冲（SH1，SH2）的持续时间。

2. 发明申请

US20070247406A1 Method and Apparatus for Updating Sub-Pictures in a Bi-Stable Electronic Reading Device 审中-公开
标题翻译：用于更新双稳态电子读取装置中的子画面的方法和装置
公开(公告)号：US20070247406A1
公开(公告)日：2007-10-25
申请号：US10569715
申请日：2004-08-24
申请人： Guofu Zhou , Jan Van De Kamer
发明人： Guofu Zhou , Jan Van De Kamer
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2003 , G09G3/2044 , G09G5/02 , G09G5/14 , G09G5/40 , G09G2310/04 , G09G2320/02 , G09G2320/0242 , G09G2320/066 , G09G2340/12
摘要： Image quality is improved in an electronic reading device (300, 400), such as an electronic book using a bi-stable electrophoretic display, by determining a position to display a sub-picture (900) over a background picture (800, 810) so that like colors do not overlap. This avoids having a noticeable contrast between the color of the background picture, which may have faded since the background was displayed, and the color of the sub-picture. In another embodiment, a transition region (1310, 1320) is provided between the sub-picture (1350) and the background picture (1300) using an intermediate color, or a dithered or greyscale pattern. The background picture and sub-picture may include text and/or images.
摘要翻译：通过确定在背景画面（800,810）上显示子画面（900）的位置，电子阅读设备（300,400）中的图像质量得到改善，例如使用双稳态电泳显示器的电子书，所以像颜色不重叠。这避免了背景图片的颜色与显示背景之后可能已经褪色的颜色和副图像的颜色之间具有明显的对比度。在另一个实施例中，使用中间颜色或抖动或灰度图案在子画面（1350）和背景画面（1300）之间提供过渡区域（1310,1320）。背景图片和子图片可以包括文本和/或图像。

3. 发明授权

US07796115B2 Scrolling function in an electrophoretic display device 有权
标题翻译：电泳显示装置中的滚动功能
公开(公告)号：US07796115B2
公开(公告)日：2010-09-14
申请号：US11572572
申请日：2005-07-19
申请人： Guofu Zhou , Mark Thomas Johnson , Jan Van De Kamer , Rogier Cortie , Mischa Eduard Tanja Nelis
发明人： Guofu Zhou , Mark Thomas Johnson , Jan Van De Kamer , Rogier Cortie , Mischa Eduard Tanja Nelis
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G5/34 , G09G2300/08 , G09G2310/06 , G09G2320/0252 , Y02P20/142
摘要： Bi-stable electrophoretic display device (1) having a normal mode and a scrolling mode, in which image transitions are effected by causing the charged particles (8,9) to toggle between the intermediate optical states (e.g. grey-to-grey) or between an extreme optical state and an intermediate optical state (e.g. white-to-light grey), with a corresponding short update time tscroll. When the device (1) enters a scrolling mode in response to a scrolling command from a user, picture elements are first driven to a special scrolling optical. state, after which drive waveforms for scrolling mode are used for fast toggling between two scrolling states. An increased scrolling speed and very short scrolling time can be realized, without adversely affecting image quality during a normal mode.
摘要翻译：具有正常模式和滚动模式的双稳态电泳显示装置（1），其中通过使带电粒子（8,9）在中间光学状态（例如灰色至灰色）之间切换来实现图像转换，或在极端光学状态和中间光学状态（例如，白色至浅灰色）之间，具有相应的更新时间tscroll。当设备（1）响应于来自用户的滚动命令进入滚动模式时，首先将图像元素驱动到特殊的滚动光学。状态，之后用于滚动模式的驱动波形用于两个滚动状态之间的快速切换。可以实现增加的滚动速度和非常短的滚动时间，而不会在正常模式期间不利地影响图像质量。

4. 发明申请

US20080291184A1 Scrolling Function in an Electrophoretic Display Device 有权
标题翻译：电泳显示装置中的滚动功能
公开(公告)号：US20080291184A1
公开(公告)日：2008-11-27
申请号：US11572572
申请日：2005-07-19
申请人： Guofu Zhou , Mark Thomas Johnson , Jan Van De Kamer , Rogier Cortie , Mischa Eduard Tanja Nelis
发明人： Guofu Zhou , Mark Thomas Johnson , Jan Van De Kamer , Rogier Cortie , Mischa Eduard Tanja Nelis
IPC分类号： G09G5/00 , G09G3/34
CPC分类号： G09G3/344 , G09G5/34 , G09G2300/08 , G09G2310/06 , G09G2320/0252 , Y02P20/142
摘要： Bi-stable electrophoretic display device (1) having a normal mode and a scrolling mode, in which image transitions are effected by causing the charged particles (8,9) to toggle between the intermediate optical states (e.g. grey-to-grey) or between an extreme optical state and an intermediate optical state (e.g. white-to-light grey), with a corresponding short update time tscroll. When the device (1) enters a scrolling mode in response to a scrolling command from a user, picture elements are first driven to a special scrolling optical. state, after which drive waveforms for scrolling mode are used for fast toggling between two scrolling states. An increased scrolling speed and very short scrolling time can be realised, without adversely affecting image quality during a normal mode.
摘要翻译：具有正常模式和滚动模式的双稳态电泳显示装置（1），其中通过使带电粒子（8,9）在中间光学状态（例如灰色至灰色）之间切换来实现图像转换，或在极端光学状态和中间光学状态（例如，白色至浅灰色）之间，具有相应的更新时间tscroll。当设备（1）响应于来自用户的滚动命令进入滚动模式时，首先将图像元素驱动到特殊的滚动光学。状态，之后用于滚动模式的驱动波形用于两个滚动状态之间的快速切换。可以实现增加的滚动速度和非常短的滚动时间，而不会在正常模式期间不利地影响图像质量。

5. 发明授权

US07839381B2 Driving method for an electrophoretic display with accurate greyscale and minimized average power consumption 有权
标题翻译：具有精确灰度和最小化平均功耗的电泳显示器的驱动方法
公开(公告)号：US07839381B2
公开(公告)日：2010-11-23
申请号：US10570844
申请日：2004-08-30
申请人： Guofu Zhou , Alex V. Henzen , Jan van de Kamer , Mark T. Johnson
发明人： Guofu Zhou , Alex V. Henzen , Jan van de Kamer , Mark T. Johnson
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2014 , G09G3/2018 , G09G2310/02 , G09G2310/061 , G09G2310/065 , G09G2310/068 , G09G2330/021 , G09G2340/16
摘要： An image is updated on a bi-stable display (310) such as an electrophoretic display in successive frame periods by accessing data defining a set of voltage waveforms for the successive frame periods. At least a portion of the bi-stable display is driven during the successive frame periods according to the accessed data so that a longer frame period (FT, 1302, 1304, 1402, 1502, 1602, 1702, 1802) is used during at least a first portion of the voltage waveforms, and a shorter frame period (FT′) is used during at least a second portion of the voltage waveforms. For example, the longer frame period may be an elongated frame period, which is the longest period during which each of the voltage waveforms has a respective constant voltage value.
摘要翻译：通过访问定义连续帧周期的一组电压波形的数据，在连续的帧周期中，在诸如电泳显示器的双稳态显示器（310）上更新图像。至少一部分双稳态显示器在连续帧周期期间根据所访问的数据被驱动，使得在至少一个帧期间使用更长的帧周期（FT，1302,1304,1402,1502,1602,1702,1802）在电压波形的至少第二部分期间使用电压波形的第一部分和较短的帧周期（FT'）。例如，较长的帧周期可以是延长的帧周期，其是每个电压波形具有相应的恒定电压值的最长周期。

6. 发明申请

US20070212022A1 Electrophoretic Display with Reduced Cross Talk 审中-公开
标题翻译：电泳显示与减少交谈
公开(公告)号：US20070212022A1
公开(公告)日：2007-09-13
申请号：US10599256
申请日：2005-03-29
申请人： Guofu Zhou , Jan Van de Kamer , Mark Johnson
发明人： Guofu Zhou , Jan Van de Kamer , Mark Johnson
IPC分类号： H04N5/91
CPC分类号： G09G3/344 , G09G3/2014 , G09G3/2051 , G09G2300/08 , G09G2310/06 , G09G2310/065 , G09G2320/0209 , G09G2320/041
摘要： A technique for driving a bi-stable display (310) such as an electrophoretic display with reduced cross talk, including reduced image retention and dithering ghosting. Drive waveforms are aligned so that, during an image update period, image transitions (500, 600, 700, 800, 900) between substantially similar optical states (e.g., black-to-black) are terminated substantially later than image transitions (520, 620, 720, 920) between substantially different optical states (e.g., black-to-white). Additionally, a drive pulse in the waveforms for the transitions between the similar states compensates for cross talk caused by a drive pulse in the waveforms for the transitions between the different states. The waveforms include at least one extreme drive pulse (ED, ED1, ED2, ED3) and an additional pulse (A) of opposite polarity.
摘要翻译：一种用于驱动具有减少的串扰的电泳显示器的双稳态显示器（310）的技术，包括减少的图像保持和抖动重影。驱动波形被对准，使得在图像更新周期期间，在基本上相似的光学状态（例如，黑色至黑色）之间的图像转换（500,600,700,800,900）在图像转换（520， 620,720,920）在基本上不同的光学状态之间（例如，黑色至白色）。此外，用于类似状态之间的转换的波形中的驱动脉冲补偿由不同状态之间的转换的波形中的驱动脉冲引起的串扰。这些波形包括至少一个极性驱动脉冲（ED，ED 1，ED 2，ED 3）和相反极性的附加脉冲（A）。

7. 发明申请

US20070052667A1 Bi-stable display with accurate greyscale and natural image update 审中-公开
标题翻译：双稳态显示，精准的灰度和自然图像更新
公开(公告)号：US20070052667A1
公开(公告)日：2007-03-08
申请号：US10573309
申请日：2004-09-24
申请人： Guofu Zhou , Neculai Ailenei , Mark Johnson , Jan van de Kamer
发明人： Guofu Zhou , Neculai Ailenei , Mark Johnson , Jan van de Kamer
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G2310/06 , G09G2310/061 , G09G2310/068 , G09G2320/02 , G09G2320/0247 , G09G2320/0257 , G09G2380/02
摘要： An accurate greyscale is obtained with more natural image updates when updating a display (310) in a bi-stable electronic reading device (300,400), such as one using an electrophoretic display, by applying a first shaking pulse (S1) to the display, applying a first portion (R1) of a reset pulse to the display following the first shaking pulse (S1), applying a second shaking pulse (S2) to the display following the first portion (R1), and applying a second portion (R2) of the reset pulse to the display following the second shaking pulse (S2). The first portion may have a standard reset duration, while the second portion has an over-reset duration. A visual shock effect is avoided which would otherwise as applied after the entire reset pulse.
摘要翻译：通过对显示器施加第一摇动脉冲（S1），在使用电泳显示器的双稳态电子阅读装置（300,400）中更新显示器（310）时，获得更自然的图像更新的精确灰度，，在第一摇动脉冲（S1）之后向显示器施加复位脉冲的第一部分（R 1），对第一部分（R 1）之后的显示器施加第二抖动脉冲（S 2），并施加复位脉冲的第二部分（R 2）到第二抖动脉冲之后的显示（S 2）。第一部分可以具有标准复位持续时间，而第二部分具有过度复位持续时间。避免视觉冲击效应，否则将在整个复位脉冲之后施加。

8. 发明申请

US20070075962A1 Electrophoretic display with reduced look-up-table memeory 审中-公开
标题翻译：电泳显示与减少查找表的memeory
公开(公告)号：US20070075962A1
公开(公告)日：2007-04-05
申请号：US10571804
申请日：2004-09-15
申请人： Guofu Zhou , Jan Van De Kamer , Mark Johnson
发明人： Guofu Zhou , Jan Van De Kamer , Mark Johnson
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2011 , G09G3/2014 , G09G3/2081 , G09G2300/08 , G09G2310/06 , G09G2310/061 , G09G2310/08 , G09G2320/041
摘要： An display device (301) has reduced memory (314) requirements for temperature compensation data. A scaling factors (433) for various temperatures and a look-up table for a waveform which is optimized to drive the grayscale for a given display temperature are stored in memory (314). The waveform for a particular temperature of the display (301) is derived from the look-up table and scaling factors (433). At some temperatures, only certain parts of the waveform need be varied, and only these parts require accurate scaling from the look-up table.
摘要翻译：显示装置（301）对于温度补偿数据的存储器（314）需求减少。用于各种温度的缩放因子（433）和用于为给定显示温度驱动灰度的波形的查找表被存储在存储器（314）中。用于显示器（301）的特定温度的波形从查找表和缩放因子（433）导出。在某些温度下，仅波形的某些部分需要改变，只有这些部分需要从查找表进行精确的缩放。

9. 发明申请

US20060291032A1 Driving method of an electrophoretic display with high frame rate and low peak power consumption 审中-公开
标题翻译：具有高帧速率和低峰值功耗的电泳显示器的驱动方法
公开(公告)号：US20060291032A1
公开(公告)日：2006-12-28
申请号：US10569178
申请日：2004-08-23
申请人： Guofu Zhou , Jan van de Kamer , Neculai Ailenei
发明人： Guofu Zhou , Jan van de Kamer , Neculai Ailenei
IPC分类号： G02B26/00
CPC分类号： G09G3/344 , G09G3/2014 , G09G2310/06 , G09G2310/061 , G09G2310/068 , G09G2320/0252 , G09G2320/029
摘要： An image is updated on a bi-stable display (310) such as an electrophoretic display by applying a drive waveform (900,920,940, 960; 1000, 1020,1040, 1060; 1100, 1120, 1140, 1160; 1220, 1240, 1260) with a compensating impulse (C) to at least one pixel (2) in the display. An energy of the compensating impulse depends on the image holding time, and is sufficient to restore the display to an original, pre-drift, brightness level. In one approach, the energy of the compensating impulse is determined as a predetermined function of the image holding time. In another approach, data defining different waveforms for respective different image holding times is provided in respective different look-up tables, and the data from one of the tables is selected according to the image holding time for driving the display. The compensating impulse may be provided in different portions of the drive waveform.
摘要翻译：通过施加驱动波形（900,920,940,960; 1000,1020,1040,1060; 1100,1120,1140,1160; 1220,1240,1260），在诸如电泳显示器的双稳态显示器（310）上更新图像，对显示器中的至少一个像素（2）施加补偿脉冲（C）。补偿脉冲的能量取决于图像保持时间，并且足以将显示恢复到原始的预漂移亮度水平。在一种方法中，补偿脉冲的能量被确定为图像保持时间的预定函数。在另一种方法中，在各个不同的查找表中提供定义用于各个不同图像保持时间的不同波形的数据，并且根据用于驱动显示的图像保持时间选择来自一个表的数据。补偿脉冲可以设置在驱动波形的不同部分。

10. 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
标题翻译：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
公开(公告)号：US20060290652A1
公开(公告)日：2006-12-28
申请号：US10573548
申请日：2004-09-24
申请人： Guofu Zhou , Jan van de Kamer , Mark Johnson , Neculai Ailenei
发明人： Guofu Zhou , Jan van de Kamer , Mark Johnson , Neculai Ailenei
IPC分类号： G09G3/34
CPC分类号： G09G3/344 , G09G3/2014 , G09G2310/06 , G09G2310/061 , G09G2310/068 , G09G2320/0204
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.
摘要翻译：通过提供单色和灰度图像，在使用电泳显示器的双稳态电子读取装置（300,400）中更新显示图像（310）时，图像质量得到改善。当显示器的像素（2）的更新模式从单色变为灰度时，应用补偿脉冲（805,825,845,865）。补偿脉冲表示基于以下之间的能量差的能量：（a）在灰度级更新模式期间使用的过度复位脉冲（815,835,855,875）和（b）使用的标准复位脉冲（610,660）在单色更新模式下。此外，单色更新波形（600,650）包括标准复位脉冲（610,660），其持续时间基本上小于在灰度更新波形中使用的过度复位脉冲（815,835,855,875）的持续时间（800,820,840和860）。单色更新模式可以与灰度更新模式结合使用。

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