利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

26 条记录 (耗时 0.025 秒)

    Exploitation of null packets in packetized digital television systems
    24.
    发明授权
    Exploitation of null packets in packetized digital television systems 有权
    在分组数字电视系统中利用零分组

    公开(公告)号：US07376159B1

    公开(公告)日：2008-05-20

    申请号：US10038174

    申请日：2002-01-03

    申请人： Leon J. Stanger ,  Hanno Basse ,  James A. Michener ,  Robert H. Plummer ,  Richard K. Newman

    发明人： Leon J. Stanger ,  Hanno Basse ,  James A. Michener ,  Robert H. Plummer ,  Richard K. Newman

    IPC分类号： H04J3/00

    CPC分类号： H04N21/23611 ,  H04J3/1682 ,  H04N21/23614 ,  H04N21/2365 ,  H04N21/23655 ,  H04N21/4347 ,  H04N21/4348

    摘要： A system and method for adding auxiliary data DA to an output data stream from a statistical multiplexer is disclosed. An auxiliary multiplexer accepts a statistically multiplexed data stream, and substitutes auxiliary data packets for null data packets. The auxiliary multiplexer controls the number of null packets in the statistically multiplexed data stream by controlling the target bandwidth BT of the statistical multiplexer, or by modifying the statistical multiplexer equation to make the auxiliary data stream a participant in the negotiation process of allocating throughput among the data sources.

    摘要翻译： 公开了一种用于将辅助数据D A A加到来自统计多路复用器的输出数据流的系统和方法。 辅助复用器接受统计复用的数据流，并将辅助数据分组替换为空数据分组。 辅助复用器通过控制统计多路复用器的目标带宽B SUB来控制统计复用数据流中的空分组数，或通过修改统计多路复用器方程来使辅助数据流成为参与者 在数据源之间分配吞吐量的协商过程。

    Delivery and transmission of dolby digital AC-3 over television broadcast
    25.
    发明授权
    Delivery and transmission of dolby digital AC-3 over television broadcast 有权
    通过电视广播传送和传输dolby数字AC-3

    公开(公告)号：US07283965B1

    公开(公告)日：2007-10-16

    申请号：US09345659

    申请日：1999-06-30

    申请人： James A. Michener

    发明人： James A. Michener

    IPC分类号： G10L19/00

    CPC分类号： H04H20/89

    摘要： Methods and apparatus for broadcasting high quality audio “studio direct” with the same digital information employed in the studio by the video producer with AC-3 digital audio signals for broadcast to integrated receiver decoders (IRD). The methods and apparatus permit proper handling of AC-3 data by switching signals to encoders in response to detection of the encoded signals representing compression of the data. Control over individual data bits such as copyright bits is maintained by determining the bit status, comparing it to a preferred status, changing the status if it does not comply with the preferred status, and reevaluating cyclical redundancy check value in each data packet to avoid disruption in the data transmission. In addition, the system includes an uplink device which automatically checks, logs and reports errors in Dolby Digital AC-3 signals by a monitor which employs a processor, a digital audio card and an SMPTE timecode reader. As an option, an ethernet interface may be provided to permit AC-3 transmission to expedite storage and transmission of the audio data by media such as compact disks. The monitor employs a state machine that finds AC-3 packets, locks into the packets and detects discontinuities or loss of signal. The monitor then computes and checks the cyclical redundancy check value of the AC-3 packet found. In addition, the system enables the device to play AC-3 signals such as Dolby Digital out in sync with video signals, regardless of the storage media for the files. A sound card having an input for receiving house reference AES clock pulses enables the AES clock of the playback signal to be locked to the frequency of a production house master as a time code reader or an editor's contact closure match video and audio signals playback.

    摘要翻译： 使用具有AC-3数字音频信号的视频制作人在工作室中采用的相同数字信息广播高质量音频“录音室直播”的方法和装置，用于广播到集成接收机解码器（IRD）。 响应于代表数据压缩的编码信号的检测，该方法和装置允许通过将信号切换到编码器来适当地处理AC-3数据。 通过确定比特状态，将其与优选状态进行比较，改变状态（如果不符合优选状态），并重新评估每个数据包中的循环冗余校验值以避免中断，则维护诸如版权比特之类的个别数据位的控制 在数据传输中。 此外，该系统还包括一个上行链路设备，它通过采用处理器，数字音频卡和SMPTE时间码读取器的监视器自动检查，记录和报告杜比数字AC-3信号中的错误。 作为选择，可以提供以太网接口以允许AC-3传输，以加速诸如光盘之类的介质的音频数据的存储和传输。 监视器使用一个查找AC-3数据包的状态机，锁定到数据包中，并检测不连续或信号丢失。 然后监视器计算并检查发现的AC-3包的循环冗余校验值。 此外，无论文件的存储介质如何，该系统使设备能够与视频信号同步播放诸如杜比数字输出的AC-3信号。 具有用于接收房屋参考AES时钟脉冲的输入的声卡使得重放信号的AES时钟能够被锁定到生产屋主的频率，作为时间码读取器或者编辑者的接触闭合匹配视频和音频信号回放。

    Method for altering AC-3 data streams using minimum computation
    26.
    发明授权
    Method for altering AC-3 data streams using minimum computation 有权
    使用最小计算改变AC-3数据流的方法

    公开(公告)号：US06560496B1

    公开(公告)日：2003-05-06

    申请号：US09345656

    申请日：1999-06-30

    申请人： James A. Michener

    发明人： James A. Michener

    IPC分类号： G06F1700

    CPC分类号： H04H60/73 ,  G11B20/00086 ,  G11B20/10527 ,  G11B20/18 ,  G11B2020/00014 ,  H03M13/093 ,  H04H20/89 ,  H04H60/11

    摘要： Methods and apparatus for broadcasting high quality audio “studio direct” with the same digital information employed in the studio by the video producer with AC-3 digital audio signals for broadcast to individual receiver decoders (IRD) include a method for altering meta data bits with minimum recalculation of cyclical redundancy check values. Control over individual data bits such as copyright bits is maintained by determining the bit status, comparing it to a preferred status, changing the status if it does not comply with the preferred status, and reevaluating cyclical redundancy check value in each data packet to avoid disruption in the data transmission. The calculation according to the present invention simplifies the hardware, storage and processing demands of previously known calculation techniques by forward and reverse comparisons of partial packet cyclic redundancy check (CRC) values.

    摘要翻译： 用于广播到各个接收机解码器（IRD）的具有AC-3数字音频信号的视频制作者在工作室中采用的具有相同数字信息的高质量音频“演播室直播”的方法和装置包括一种用于改变元数据位的方法， 循环冗余校验值的最小重新计算。 通过确定比特状态，将其与优选状态进行比较，改变状态（如果不符合优选状态），并重新评估每个数据包中的循环冗余校验值以避免中断，则维护诸如版权比特之类的个别数据位的控制 在数据传输中。 根据本发明的计算通过部分分组循环冗余校验（CRC）值的正向和反向比较来简化先前已知的计算技术的硬件，存储和处理需求。