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    FULL FRAMEBUFFER FOR ELECTRONIC PAPER DISPLAYS
    1.
    发明公开
    FULL FRAMEBUFFER FOR ELECTRONIC PAPER DISPLAYS 有权
    电子纸显示器的全帧卡纸

    公开(公告)号：EP2054763A1

    公开(公告)日：2009-05-06

    申请号：EP08777422.0

    申请日：2008-06-13

    申请人： Ricoh Company, Ltd.

    发明人： BARRUS, John ,  FENG, Guotong

    IPC分类号： G02F1/167

    CPC分类号： G09G3/344 ,  G09G2310/04 ,  G09G2320/0252 ,  G09G2340/16 ,  G09G2360/18

    摘要： A system and a method are disclosed for updating a bi-stable display includes a framebuffer for storing waveforms for each pixel individually. The system includes determining a current state of a pixel of the bi-stable display; determining a desired state of the pixel of the bi-stable display; and updating the pixel by applying a determined control signal to the pixel to drive the pixel from the current state to the final state. Updating each pixel occurs independently of the other pixels of the bi-stable display.

    摘要翻译： 公开了一种用于更新双稳态显示器的系统和方法，其包括用于单独存储每个像素的波形的帧缓冲器。 该系统包括确定双稳态显示器的像素的当前状态; 确定双稳态显示器的像素的期望状态; 以及通过向像素施加确定的控制信号来更新像素以将像素从当前状态驱动到最终状态。 更新每个像素独立于双稳态显示器的其他像素。

    PEN TRACKING AND LOW LATENCY DISPLAY UPDATES ON ELECTRONIC PAPER DISPLAYS
    3.
    发明公开
    PEN TRACKING AND LOW LATENCY DISPLAY UPDATES ON ELECTRONIC PAPER DISPLAYS 审中-公开
    PEN跟踪和低延迟显示更新电子纸SHOW

    公开(公告)号：EP2160671A1

    公开(公告)日：2010-03-10

    申请号：EP08765766.4

    申请日：2008-06-13

    申请人： Ricoh Company, Ltd.

    发明人： FENG, Guotong ,  BARRUS, John

    IPC分类号： G06F3/041 ,  G09G3/20 ,  G09G3/34

    CPC分类号： G09G3/344 ,  G09G2310/04

    摘要： A system and a method are disclosed for fast pen tracking a low latency display updates on an electronic paper display. Pen input information is received on an electronic paper display that updates at a predetermined display update rate. A line drawing module of the electronic paper display driver determines at least one pixel to activate based on the received pen input information. The at least one pixel is updated independent of the display update rate of the electronic paper display. Active pixel state information is maintained separately for each pixel in real time until the pixel update is complete and the pixel is deactivated. In some embodiments, a future pixel to activate is determined based on the received pen input information. The future pixel is deactivated if pen input information is not received on the activated pixel for a predetermined amount of time.

    VIDEO PLAYBACK ON ELECTRONIC PAPER DISPLAYS
    6.
    发明公开
    VIDEO PLAYBACK ON ELECTRONIC PAPER DISPLAYS 有权
    电子纸显示器上的视频播放

    公开(公告)号：EP2054762A1

    公开(公告)日：2009-05-06

    申请号：EP08777421.2

    申请日：2008-06-13

    申请人： Ricoh Company, Ltd.

    发明人： EROL, Berna ,  BARRUS, John ,  FENG, Guotong

    IPC分类号： G02F1/167 ,  G02F1/19 ,  G09G3/34

    CPC分类号： G09G3/344 ,  G02F2001/1676 ,  G09G3/2011 ,  G09G2320/0252 ,  G09G2320/0261 ,  G09G2320/0271 ,  G09G2340/16 ,  G09G2380/02

    摘要： A system for displaying video on electronic paper displays to reduce video playback artifacts comprises an electronic paper display, a video transcoder, a display controller and a waveforms module. The video transcoder receives a video stream on for presentation on the electronic paper display. The video transcoder processes the video stream and generates pixel data that is provided to the display controller. The video transcoder adapts and re-encodes the video stream for better display on the electronic paper display. In one embodiment, the video transcoder includes one or more of the following processes: encoding the video using the control signals instead of the desired image, encoding the video using simulation data, scaling and translating the video for contrast enhancement and reducing errors by using simulation feedback, past pixels and future pixels. The present invention also includes a method for displaying video on an electronic paper display.

    摘要翻译： 一种用于在电子纸显示器上显示视频以减少视频重放伪影的系统包括电子纸显示器，视频代码转换器，显示控制器和波形模块。 视频代码转换器接收开启的视频流以在电子纸显示器上呈现。 视频代码转换器处理视频流并生成提供给显示控制器的像素数据。 视频代码转换器对视频流进行调整和重新编码，以便在电子纸显示屏上更好地显示。 在一个实施例中，视频代码转换器包括以下处理中的一个或多个：使用控制信号而不是期望的图像对视频进行编码，使用模拟数据对视频进行编码，通过使用仿真对视频进行缩放和平移以用于对比度增强并减少错误 反馈，过去的像素和未来的像素。 本发明还包括一种用于在电子纸显示器上显示视频的方法。

    SPATIALLY MASKED UPDATE FOR ELECTRONIC PAPER DISPLAYS
    7.
    发明公开
    SPATIALLY MASKED UPDATE FOR ELECTRONIC PAPER DISPLAYS 有权
    国土蒙面更新电子纸显示

    公开(公告)号：EP2054761A1

    公开(公告)日：2009-05-06

    申请号：EP08765765.6

    申请日：2008-06-13

    申请人： Ricoh Company, Ltd.

    发明人： GORMISH, Michael, J. ,  FENG, Guotong

    IPC分类号： G02F1/167

    CPC分类号： G02F1/167 ,  G09G3/3433 ,  G09G3/344 ,  G09G2300/0473 ,  G09G2320/0247 ,  G09G2320/0252 ,  G09G2320/0257 ,  G09G2360/18 ,  G09G2380/02

    摘要： Electronic Paper Displays can suffer from ghosting or previous images remaining partially visible after the display has updated to show a new image. A pseudo-random noise intermediate image is used to make the ghosting less visible to human observers. Further, other intermediate images can be used to convey visible information or to convey secret information, e.g. a watermark. A control signal for driving the bi-stable display from the current optical state to an intermediate state, then to a final optical state is also determined. In some embodiments, the intermediate state for each pixel is determined in a pseudo-random manner. The pseudo-random noise values are applied to the bi-stable display to remove noise and other artifacts from the end resulting images. The determined control signal is applied to the bi-stable display to drive the bi-stable to the intermediate state, then to the final optical state.

    SPATIALLY MASKED UPDATE FOR ELECTRONIC PAPER DISPLAYS
    8.
    发明授权
    SPATIALLY MASKED UPDATE FOR ELECTRONIC PAPER DISPLAYS 有权
    针对电子纸张显示的空间掩盖更新

    公开(公告)号：EP2054761B1

    公开(公告)日：2018-05-16

    申请号：EP08765765.6

    申请日：2008-06-13

    申请人： Ricoh Company, Ltd.

    发明人： GORMISH, Michael, J. ,  FENG, Guotong

    IPC分类号： G09G3/34 ,  G02F1/167

    CPC分类号： G02F1/167 ,  G09G3/3433 ,  G09G3/344 ,  G09G2300/0473 ,  G09G2320/0247 ,  G09G2320/0252 ,  G09G2320/0257 ,  G09G2360/18 ,  G09G2380/02

    摘要： Electronic Paper Displays can suffer from ghosting or previous images remaining partially visible after the display has updated to show a new image. A pseudo-random noise intermediate image is used to make the ghosting less visible to human observers. Further, other intermediate images can be used to convey visible information or to convey secret information, e.g. a watermark. A control signal for driving the bi-stable display from the current optical state to an intermediate state, then to a final optical state is also determined. In some embodiments, the intermediate state for each pixel is determined in a pseudo-random manner. The pseudo-random noise values are applied to the bi-stable display to remove noise and other artifacts from the end resulting images. The determined control signal is applied to the bi-stable display to drive the bi-stable to the intermediate state, then to the final optical state.