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    • 2. 发明申请
    • METHOD AND APPARATUS TO DETECT PREVIEW OF ENCRYPTED CONTENT
    • 检测加密内容的预测方法和装置
    • WO2010096799A1
    • 2010-08-26
    • PCT/US2010/025024
    • 2010-02-23
    • ADVANCED MICRO DEVICES, INC.JAGMAG, Adil
    • JAGMAG, Adil
    • H04N5/00H04N7/167H04N7/24H04N5/445
    • H04N7/1675H04N5/44543H04N5/44591H04N21/2389H04N21/4383H04N21/4385H04N21/43853H04N21/4623H04N21/47211H04N21/4882
    • A method and apparatus detects a presence of a change in encryption status of video information, such as a preview, in a video stream. The method and apparatus issues notification information such as through a visual user interface, audibly or in any other suitable manner, that new content, such as a pay per view video information, is either available or unavailable based on the detection of a change in encryption status of the video information. An interactive and automated technique is provided to inform a user while, for example, the user is watching a display device, that a preview of content is now available or that a previously available preview has now changed and is now encrypted and therefore a user must order the previewed content before an expiration period occurs. In this fashion, a user is automatically notified that a free preview is available, while watching television and a broadcaster may increase revenues since preview information is more readily detected and presented to potential customers.
    • 一种方法和装置检测视频流中视频信息(例如预览)的加密状态的改变的存在。 该方法和装置基于检测到加密的变化,通过可视用户界面以听觉地或以任何其它合适的方式发出通知信息,诸如付费视频视频信息等新内容可用或不可用 视频信息的状态。 提供交互式和自动化的技术来通知用户,例如用户正在观看显示设备,内容的预览现在可用或者先前可用的预览现在已经被改变并且被加密,因此用户必须 在发生过期之前订购预览的内容。 以这种方式,用户被自动通知免费预览可用,同时观看电视和广播者可以增加收入,因为预览信息更容易被检测并呈现给潜在客户。