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    Digital video and data recorder
    87.
    发明授权
    Digital video and data recorder 失效
    数字视频和数据记录仪

    公开(公告)号：US06865339B1

    公开(公告)日：2005-03-08

    申请号：US09665326

    申请日：2000-09-19

    申请人： Melvin Gable ,  Roy Lewis ,  William Caldwell

    发明人： Melvin Gable ,  Roy Lewis ,  William Caldwell

    IPC分类号： G11B27/032 ,  G11B27/034 ,  G11B27/30 ,  H04N5/782 ,  H04N7/24 ,  H04N9/79 ,  H04N9/804 ,  H04N9/82 ,  H04N9/888 ,  H04N7/26 ,  H04N7/04

    CPC分类号： H04N21/44016 ,  G11B27/032 ,  G11B27/034 ,  G11B27/3027 ,  G11B27/3063 ,  G11B2220/20 ,  G11B2220/2512 ,  G11B2220/90 ,  G11B2220/913 ,  H04N5/782 ,  H04N9/7925 ,  H04N9/8042 ,  H04N9/8205 ,  H04N9/888 ,  H04N21/23424 ,  H04N21/8547

    摘要： A “pause and resume” function and a “channel change” function for recording and playing interframe compressed audiovideo data, particularly MPEG data. The invention includes a digital track format and a method for recording one or more sessions from one or more streams of interframe compressed audiovideo data which has been synchronized to a reference clock. The invention adds special “splice point” indicators to recorded video material. The splice point indicators are added either periodically (e.g., by recording a special reference clock) or when a discontinuity occurs in recording audiovideo data streams. Splice point indicators are used to determine the existence of a point of discontinuity in the recorded audiovideo data. The system and method enable pausing and later resuming recording of an audiovideo data stream such that the audiovideo data can be played back with proper resynchronization at each point of discontinuity (the “pause and resume” function). The format and method also allow for recording an abrupt change from one audiovideo data stream to a different audiovideo data stream having a different clock reference, such that the two recorded sequences are spliced together as one continuous recorded sequence that can be played back with resynchronization of the program audiovideo data at each splice point (the “channel change” function). As a consequence of using an added special reference clock as a splice point indicator, the invention also provides random access playback. In addition, the invention permits recording of conventional data in standard storage formats.

    摘要翻译： “暂停和恢复”功能和用于记录和播放帧间压缩音频视频数据，特别是MPEG数据的“频道改变”功能。 本发明包括数字轨道格式和用于从已经被同步到参考时钟的帧间压缩音频视频数据的一个或多个流记录一个或多个会话的方法。 本发明为记录的视频材料添加了特殊的“拼接点”指示器。 拼接点指示符周期性地添加（例如，通过记录特殊参考时钟）或者当记录音频视频数据流时发生不连续性。 拼接点指示符用于确定记录的音视频数据中是否存在不连续点。 系统和方法使得能够暂停并且稍后恢复音频视频数据流的记录，使得音频视频数据可以在每个不连续点（“暂停和恢复”功能）下以适当的重新同步进行播放。 格式和方法还允许记录从一个音频视频数据流到具有不同时钟参考的不同音频视频数据流的突然改变，使得两个记录的序列被拼接在一起作为一个连续的记录序列，可以通过重新同步 每个拼接点的节目音视频数据（“频道切换”功能）。 作为使用附加的特殊参考时钟作为拼接点指示符的结果，本发明还提供了随机访问重放。 此外，本发明允许以标准存储格式记录常规数据。