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    • 18. 发明申请
    • Apparatus and Method for Secure Distribution of Media Data
    • 媒体数据安全分发的装置和方法
    • US20120117130A1
    • 2012-05-10
    • US12942606
    • 2010-11-09
    • Rob A. GearhartLiam HarpurMark KellyJohn Rice
    • Rob A. GearhartLiam HarpurMark KellyJohn Rice
    • G06F17/30
    • G06F17/30023
    • A technique for playing a media file by a data processing system. A degraded initial version of the media file is received from a sending data processing system. A supplemental version of the media file is received from the sending data processing system. The degraded version of the media file is merged with the supplemental version of the media file to form a combined media file, with the combined media file being played. In one embodiment, the degraded version of the media data has a reduced quality that is obtained by removing portions of the data and filling in the removed portions with dummy data. During a subsequent rebuilding of the media data by the receiving/recipient data processing system, a supplemental version of the media data is received and merged/combined with the degraded version to form a copy that corresponds to the original, high-quality version of the media data.
    • 一种由数据处理系统播放媒体文件的技术。 从发送数据处理系统接收到媒体文件的降级的初始版本。 从发送数据处理系统接收媒体文件的补充版本。 媒体文件的降级版本与媒体文件的补充版本合并,形成组合的媒体文件,播放组合的媒体文件。 在一个实施例中,媒体数据的劣化版本具有降低的质量,其通过去除数据的部分并用伪数据填充去除的部分而获得。 在接收/接收数据处理系统随后重建媒体数据期间,媒体数据的补充版本被接收并与退化版本合并/组合以形成对应于原始的高质量版本的副本 媒体数据。