Techniques for operating electronic paper displays

    公开(公告)号:US10739880B1

    公开(公告)日:2020-08-11

    申请号:US15997523

    申请日:2018-06-04

    Abstract: Techniques for operating electronic paper displays of respective electronic devices are described. One set of techniques described below enhances user experience by utilizing multiple different waveform and/or display-update modes when rendering content on these displays. Another set of techniques are able to render lines on electronic paper displays having variable and arbitrary darkness, despite the restricted color depth inherent in these displays. In addition, this disclosure describes techniques for utilizing supersampling to select which shades to render on an electronic paper display of an electronic device. In still other implementations, the techniques described herein allocate a predefined frame rate of an electronic paper display between multiple different application components requesting to update the display, resulting smooth animation and relatively high-frame updates.

    Low-latency media sharing
    7.
    发明授权

    公开(公告)号:US10019591B1

    公开(公告)日:2018-07-10

    申请号:US14580267

    申请日:2014-12-23

    Abstract: Devices, systems and methods are disclosed that receive encrypted media files from a remote device during pre-caching. The encrypted media files may be transferred from the remote devices prior to a user issuing a request to share the particular media file. The remote device may maintain cryptographic keys associated with the sent encrypted media files and only share a cryptographic key associated with a media file the user wishes to share. Without the cryptographic keys, the local device cannot access the contents of the pre-shared encrypted media files in a cache. Upon the user sharing the media file and the local device receiving the cryptographic key, the local device may use the cryptographic key to decrypt the encrypted media file and display the media file at a significantly reduced latency than if the media file were sent only upon the sharing request.

    Straight Line Gesture Recognition and Rendering
    8.
    发明申请
    Straight Line Gesture Recognition and Rendering 有权
    直线手势识别和渲染

    公开(公告)号:US20150370407A1

    公开(公告)日:2015-12-24

    申请号:US14815782

    申请日:2015-07-31

    CPC classification number: G06F3/0416 G06F3/0488 G06F3/04883 G06T11/203

    Abstract: Techniques for determining whether touch-input gestures approximate straight lines and for animating a display with such gestures are described. The techniques determine a linear regression line for pixel locations comprising a gesture, determine distances of the pixel locations from the linear regression line, and render the set of pixel locations to the display based on the distances and a threshold.

    Abstract translation: 描述了用于确定触摸输入手势是否近似于直线并且用这种手势来动画显示的技术。 这些技术确定包括手势的像素位置的线性回归线,确定像素位置与线性回归线的距离,并且基于距离和阈值将像素位置集合呈现给显示器。

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