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    • 3. 发明申请
    • PREVENTING UNAUTHORIZED MODIFICATION OR SKIPPING OF VIEWING OF ADVERTISEMENTS WITHIN CONTENT
    • 预防未经授权的修改或浏览内容广告
    • US20090204541A1
    • 2009-08-13
    • US12027839
    • 2008-02-07
    • Oscar V. ZhukGlenn A. MortenEdward Charles Hiar
    • Oscar V. ZhukGlenn A. MortenEdward Charles Hiar
    • H04L9/14
    • H04N21/4405H04L63/0428H04N7/1675H04N21/2347H04N21/26613H04N21/812
    • A method, apparatus, and system are directed towards employing a chain of permission keys obtained during playing of advertisements within content to enable continued playing of the content. A sequence of encoded permission keys are generated with each encoded permission key, except a last permission key, incorporating a scrambling key useable to decode a next encoded permission key within the sequence of encoded permission keys that enables playing of a next portion of the content. If playing of any advertisement within the content is avoided, then access to an associated scrambling key useable to decode a next permission key is prevented, which in turn inhibits playing of a next portion of the content. In another embodiment, a heartbeat analysis may also be performed to monitor if skipping of an advertisement is being attempted, and if so, playing of the content is prevented.
    • 一种方法,装置和系统旨在使用在内容中播放广告期间获得的许可权钥链,以使得能够继续播放内容。 使用每个编码权限密钥来生成编码权限密钥序列,除了最后的权限密钥之外,其中包括可用于解码编码权限密钥序列内的下一个编码权限密钥的加扰密钥,该权限密钥能够播放下一部分内容。 如果避免在内容中播放任何广告,则可以防止访问可用于对下一许可密钥进行解码的相关联的加密密钥,这进而抑制下一部分内容的播放。 在另一个实施例中,还可以执行心跳分析以监视正在尝试跳过广告,并且如果是,则防止播放内容。