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    • 4. 发明授权
    • Method and apparatus for increasing channel utilization for digital
video transmission
    • 增加数字视频传输通道利用率的方法和装置
    • US5877812A
    • 1999-03-02
    • US561410
    • 1995-11-21
    • Edward A. KrauseAdam S. TomPaul Shen
    • Edward A. KrauseAdam S. TomPaul Shen
    • H04N7/173H04N21/2365H04N21/434H04N7/12
    • H04N21/2365H04N21/23406H04N21/23608H04N21/23614H04N21/2401H04N21/8456H04N7/17336
    • A method and apparatus for reducing the size of data rate fluctuations that occur in forming a multiplex of a set of program streams, each program stream in said set being decodeable by a corresponding decoder, each corresponding decoder including a corresponding decoder buffer, said decoder buffers having a maximum allowable size, said method comprising varying the formation of the different program streams in said set to minimize the memory requirement of the decoder buffers. In one embodiment, for the case of the streams being segments of a program, varying includes varying the segment length. In another embodiment, varying includes adjusting the relative alignment of the program streams. Different embodiments of adjusting include inserting program material such as a pause at selected points in time, causing decoder buffers to underflow at selected points in time, and varying the rate of decoding and display at selected points in time.
    • 一种用于减少在形成一组节目流的多路复用时发生的数据速率波动的大小的方法和装置,所述组中的每个节目流可由相应的解码器解码,每个对应的解码器包括对应的解码器缓冲器,所述解码器缓冲器 具有最大允许大小,所述方法包括改变所述集合中的不同节目流的形成,以最小化解码器缓冲器的存储器需求。 在一个实施例中,对于流是节目的段的情况,变化包括改变段长度。 在另一个实施例中,变化包括调整节目流的相对对准。 调整的不同实施例包括在所选择的时间点插入诸如暂停的节目素材,导致解码器缓冲器在选定的时间点下溢,并且在选定的时间点改变解码和显示的速率。
    • 5. 发明授权
    • Method and apparatus for encoding and formatting data representing a
video program to provide multiple overlapping presentations of the
video program
    • 用于编码和格式化表示视频节目的数据以提供视频节目的多重重叠的方法和装置
    • US5612742A
    • 1997-03-18
    • US326511
    • 1994-10-19
    • Edward A. KrausePaul ShenAdam S. Tom
    • Edward A. KrausePaul ShenAdam S. Tom
    • H04N7/173H04N21/2365H04N21/434H04N21/6377H04N21/658H04N21/845H04N7/24
    • H04N21/8456H04N21/2315H04N21/23614H04N21/23655H04N21/4347H04N21/4348H04N7/17336
    • Virtually random and on-demand access is provided to a virtually unlimited number of subscribers by partitioning the video program into an ordered sequence of n segments and providing the subscribers concurrent access to each of the n subsequences. A data stream representative of the video program is partitioned into n subsequences, each representative of one of the n segments. The data of each of the n subsequences is organized as an ordered sequence of elements. The elements of each of the n subsequences are interleaved and the interleaved data stream is continuously transmitted over a video program distribution medium at a rate which renders the data representing each segment concurrently available to any subscriber having a receiver capable of selecting, assembling, and displaying the data of a particular segment. The data stream can be compressed prior to interleaving using one of many known video data compression standards and techniques. Data compression can be performed in real time, or iteratively using software. The interleaved data stream can be transmitted in real time, or it can be stored on a storage device such as a hard disk or optical disk for later retrieval and transmission. The interleaved data stream can be ordered using any known standard by which video data is transmitted for reconstruction and display by a receiver. Data can be inserted into the interleaved data stream to inform the receiver to which of the n segments a portion of the interleaved data stream belongs, as well as the encoding level necessary for decompression of the data and time stamps to indicate order of display.
    • 通过将视频节目划分为n个片段的有序序列并向订户提供并发访问n个子序列中的每一个,向几乎无限数量的用户提供几乎随机和按需访问。 表示视频节目的数据流被划分为n个子序列,每个子序列代表n个片段之一。 n个子序列中的每个的数据被组织为有序的元素序列。 n个子序列中的每一个的元素被交织,并且交织的数据流以视频节目分发媒体的速率连续传输,该速率使表示每个片段的数据同时可用于具有能够选择,组合和显示的接收机的任何用户 特定段的数据。 数据流可以在使用许多已知的视频数据压缩标准和技术之一进行交织之前进行压缩。 数据压缩可以实时执行,也可以迭代地使用软件。 交错数据流可以实时发送,也可以存储在诸如硬盘或光盘之类的存储设备上,用于以后的检索和传输。 交织的数据流可以使用任何已知的标准进行排序,通过该标准,视频数据被发送用于由接收机重构和显示。 可以将数据插入到交织的数据流中,以通知接收器中交织的数据流的一部分所属的n个段中的哪一个,以及解压缩数据和时间标记以指示显示顺序所需的编码级别。
    • 8. 发明授权
    • In-home digital video unit with combine archival storage and high-access storage
    • 家庭数字视频单元,具有组合存档和高访问存储
    • US06304714B1
    • 2001-10-16
    • US08979145
    • 1997-11-26
    • Edward A. KrauseJerrold HellerAdam S. TomPaul Shen
    • Edward A. KrauseJerrold HellerAdam S. TomPaul Shen
    • H04N576
    • G11B27/034G11B27/031G11B27/032G11B27/107G11B2220/41G11B2220/455G11B2220/90H04N5/765H04N5/775H04N5/783H04N5/85H04N9/8042H04N9/877
    • An digital home video system providing recording and playback of compressed video programs using an archival storage medium; simultaneous recording and playback using the same archival medium; storage of multiple programs on a single videotape; a full array of trick mode functions; efficient management of the contents of a video tape or other archival storage medium; and real-time random access to video program content, enabling truly interactive playback. These capabilities are provided by combining the best features of an archival storage medium such as digital video tape: namely, potentially large storage capacity, but low tolerance for variable data rate, and essentially linear program access; with the complementary features of a relatively high-access storage device such as a fixed disk drive: namely, tolerance for a highly variable data rate, and random access capability, but relatively lower storage capacity.
    • 数字家庭视频系统,使用归档存储介质提供压缩视频节目的记录和回放; 使用相同的档案介质进行同步录制和回放; 将多个节目存储在单个录像带上; 一系列特技模式功能; 视频磁带或其他存档介质的内容的高效管理; 并实时随机访问视频节目内容,实现真正的交互式播放。 这些功能通过组合诸如数字录像带之类的档案存储介质的最佳特征来提供:即潜在的大存储容量,但对于可变数据速率的低容限度,以及基本上线性的程序存取; 具有诸如固定磁盘驱动器的相对高访问存储设备的互补特征:即,对于高可变数据速率的容限以及随机存取能力,但存储容量相对较低。