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1. 发明授权

US6151443A Digital video and data recorder 失效
标题翻译：数字视频和数据记录仪
公开(公告)号：US6151443A
公开(公告)日：2000-11-21
申请号：US858084
申请日：1997-05-16
申请人： Melvin Gable , Roy Lewis , William Caldwell
发明人： Melvin Gable , Roy Lewis , William Caldwell
IPC分类号： H04N5/7826 , G11B20/10 , G11B20/12 , G11B27/032 , G11B27/034 , G11B27/30 , H04N1/00 , H04N5/782 , H04N5/91 , H04N5/92 , H04N7/32 , H04N9/79 , H04N9/804 , H04N9/82 , H04N9/888 , H04N21/4147 , H04N21/43 , H04N21/432 , H04N21/433 , H04N21/44 , H04N21/845 , H04N5/917 , H04N5/928
CPC分类号： G11B27/032 , G11B27/034 , G11B27/3027 , H04N21/4147 , H04N21/4305 , H04N21/4325 , H04N21/4334 , H04N21/44016 , H04N21/8455 , H04N9/8042 , H04N9/8205 , G11B2220/20 , G11B2220/2512 , G11B2220/90 , G11B2220/913 , G11B27/3063 , H04N5/782 , H04N9/7925 , H04N9/888
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。

2. 发明授权

US6128433A Controlling frequency drift of a digital video tape drive 失效
标题翻译：控制数字录像带的频率漂移
公开(公告)号：US6128433A
公开(公告)日：2000-10-03
申请号：US1743
申请日：1997-12-31
申请人： Melvin Gable , William Caldwell
发明人： Melvin Gable , William Caldwell
IPC分类号： G11B15/467 , G11B15/473 , H04N9/804 , H04N5/76
CPC分类号： H04N9/8042 , G11B15/4671 , G11B15/4731
摘要： A digital video tape drive and a method of controlling frequency drift in the tape drive. The tape drive includes a helical scan recorder in which the recording drum motor and the capstan motor arc synchronized to the frequency of a long-term reference clock derived from a reference signal (e.g. an MPEG program clock reference (PCR) signal or system clock reference (SCR) signal) embedded in digital video data to be recorded by the tape drive. The drum motor is also phase locked to the long-term reference clock signal. In addition, the drum motor is synchronized to a reference clock derived from the reference signal during playback of the digital video data.
摘要翻译：一种数字录像带驱动器和一种控制磁带驱动器中的频率漂移的方法。磁带驱动器包括螺旋扫描记录器，其中记录鼓电动机和主导轴电动机与从参考信号（例如MPEG程序时钟参考（PCR）信号或系统时钟参考）导出的长期参考时钟的频率同步（SCR）信号）嵌入数字视频数据中以由磁带驱动器记录。鼓电机也被锁定到长期参考时钟信号。此外，在数字视频数据的回放期间，鼓马达与参考信号同步。

3. 发明授权

US06865339B1 Digital video and data recorder 失效
标题翻译：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。

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