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1.发明授权Method and apparatus for operating a transport stream encoder to produce a stream of packets carrying data representing a plurality of component signals 失效用于操作传输流编码器以产生携带表示多个分量信号的数据的分组流的方法和装置
公开(公告)号：US5574505A
公开(公告)日：1996-11-12
申请号：US442429
申请日：1995-05-16
IPC分类号： H04L12/801 , H04L12/911 , H04N7/10 , H04N7/52 , H04N19/00 , H04N21/236 , H04N21/2362 , H04N21/2389 , H04Q11/04 , H04N7/24
CPC分类号： H04N21/4347 , H04N21/2365 , H04N7/52
摘要： A method and apparatus are disclosed for operating a transport stream encoder to produce a stream of packets carrying data representing a plurality of component signals which comprises the following steps. The packet stream is partitioned into successive groups, each group containing a predetermined number of packet slots. A plurality of priority lists is maintained, one for each of the packet slots in the group. Each priority list contains a plurality of entries, and each entry identifies one of the component signals. When a packet slot is to be produced, the entries in the priority list corresponding to that packet slot are traversed, one at a time. For each of those entries it is determined whether the component signal identified by that entry can produce a packet. If it can, a packet containing data representing that component signal is produced. Only if none of the component signals identified by the entries in the priority list can produce a packet is a null packet produced.
摘要翻译： 公开了一种用于操作传输流编码器以产生携带表示多个分量信号的数据的分组流的方法和装置，其包括以下步骤。 分组流被划分成连续的组，每个组包含预定数量的分组时隙。 保持多个优先级列表，一组用于组中的每个分组时隙。 每个优先级列表包含多个条目，并且每个条目标识组件信号之一。 当要生成分组时隙时，遍历与该分组时隙对应的优先级列表中的条目，一次一个。 对于这些条目中的每一个，确定由该条目标识的分量信号是否可以产生分组。 如果可以，则产生包含表示该分量信号的数据的分组。 只有当优先级列表中的条目标识的分量信号都不能产生分组时，才产生一个空分组。
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公开(公告)号：US5621463A
公开(公告)日：1997-04-15
申请号：US442430
申请日：1995-05-16
IPC分类号： H04L12/70 , H04N7/10 , H04N7/52 , H04N19/00 , H04N21/236 , H04N21/2389 , H04Q11/04
CPC分类号： H04N21/23655 , H04N7/52
摘要： A transport stream encoder is disclosed which comprises a plurality of FIFO buffers coupled to sources of component signals. Each of the FIFO buffers has a data output terminal for producing component signal data. A packetizer has a data input terminal for receiving component signal data, and produces a packet stream. A data bus is coupled in common to the data output terminals of the FIFO buffers and the data input terminal of the packetizer.
摘要翻译： 公开了一种传输流编码器，其包括耦合到分量信号源的多个FIFO缓冲器。 每个FIFO缓冲器具有用于产生分量信号数据的数据输出端。 打包器具有用于接收分量信号数据的数据输入端，并产生分组流。 数据总线共同耦合到FIFO缓冲器的数据输出端和打包器的数据输入端。
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公开(公告)号：US5588025A
公开(公告)日：1996-12-24
申请号：US406216
申请日：1995-03-15
IPC分类号： H04L27/38 , H04L7/00 , H04L7/02 , H04L7/033 , H04N21/242 , H04N21/43 , H04N21/438 , H04L27/06 , H04L27/14 , H04L27/22
CPC分类号： H04L7/0029 , H04L7/0278 , H04N21/242 , H04N21/4302 , H04N21/4382 , H04N21/4384
摘要： A digital information receiver having a single oscillator providing a clock signal to the receiver circuitry. The receiver contains, in addition to the oscillator, an input signal processor, a symbol timing loop, a demodulator, a transport decoder, a transport timing loop, one or more applications decoders and a presentation device. The input signal processor digitizes an input signal and resamples the input signal using an interpolator such that the input signal is optimally sampled. The resampling is controlled by a symbol timing loop. In a first embodiment, the transport timing loop controls the frequency of the oscillator using transmitter timing information contained in the received signal. In a second embodiment, the oscillator is a free running oscillator and the transport timing loop controls a numerically controlled counter that, in turn, controls presentation timing of the information carried by the information in the input signal. After the input signal is decoded, an output interpolator generates continuous signals from somewhat bursty signals for utilization by the presentation device.
摘要翻译： 一种数字信息接收机，具有向接收机电路提供时钟信号的单个振荡器。 除了振荡器之外，接收器还包含输入信号处理器，符号定时环路，解调器，传输解码器，传输定时环路，一个或多个应用解码器和呈现设备。 输入信号处理器对输入信号进行数字化并且使用内插器对输入信号进行再采样，使得输入信号被最佳地采样。 重采样由符号定时循环控制。 在第一实施例中，传输定时环路使用包含在接收信号中的发射机定时信息来控制振荡器的频率。 在第二实施例中，振荡器是自由运行的振荡器，并且传输定时循环控制数字控制的计数器，其又控制由输入信号中的信息携带的信息的呈现定时。 在输入信号被解码之后，输出内插器从一些突发信号产生连续的信号，以供呈现设备利用。
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4.发明授权Splicing compressed, local video segments into fixed time slots in a network feed 有权将压缩的本地视频片段拼接到网络供稿中的固定时隙公开(公告)号：US07188354B2
公开(公告)日：2007-03-06
申请号：US09912433
申请日：2001-07-25
CPC分类号： H04N21/2625 , H04N21/23406 , H04N21/23424 , H04N21/23608 , H04N21/2389 , H04N21/4385 , H04N21/44004 , H04N21/44016 , H04N21/812
摘要： A method for seamlessly splicing a local commercial segment into an existing network time slot, without decoder buffer overflow or underflow. The vbv_delay of the commercial segment is manipulated (e.g., for a minimum delay or a maximum delay). The pictures from the commercial segment are output for at least a portion of the associated network time slot duration. A determination is made regarding the number of pictures remaining in a stored portion of the incoming network feed or the commercial segment and the output rate is adjusted as required. The vbv_delay of the stored network feed or the vbv_delay of the local commercial segment is adjusted to match the vbv_delay of the incoming network feed.
摘要翻译： 一种将本地商业广告段无缝拼接成现有网络时隙的方法，无需解码器缓冲区溢出或下溢。 操纵商业片段的vbv_delay（例如，对于最小延迟或最大延迟）。 输出商业片段的图片至少部分相关的网络时隙持续时间。 确定进入网络馈送或广告段的存储部分中剩余的图像数量，并且根据需要调整输出速率。 存储的网络馈送的vbv_delay或本地商业广告段的vbv_delay被调整为匹配传入网络馈送的vbv_delay。
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5.发明授权Method and apparatus for determining the value of a sample in the mth position of an ordered list of a plurality of samples 失效用于确定多个样本的有序列表的第m位置中的样本的值的方法和装置
公开(公告)号：US4933978A
公开(公告)日：1990-06-12
申请号：US405110
申请日：1989-09-11
IPC分类号： G06F17/18
CPC分类号： G06F17/18
摘要： A method and apparatus for determining the value of a sample having a particular position in an ordered ranking, by magnitude, of a set of digital samples includes means for truncating the lesser significant bits of the samples. Further means compares the values of the truncated samples and generates selection control signals indicating the truncated sample which is in the desired position of an ordered ranking of the truncated samples. A function generator then generates a function of the samples, corresponding to the selected truncated samples.
摘要翻译： 用于确定具有在一组数字样本的有序排序中的特定位置的样本的值的方法和装置包括用于截断样本的较低有效位的装置。 进一步的方法是比较截断样本的值，并产生选择控制信号，该选择控制信号指示截断的样本处于截短样本的有序排序的期望位置。 然后，函数发生器产生对应于所选截断样本的样本的函数。
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6.发明授权Single clock reference for compressed domain processing systems with interspersed transport packets 有权用于具有散置传输数据包的压缩域处理系统的单时钟参考公开(公告)号：US06473007B2
公开(公告)日：2002-10-29
申请号：US09912432
申请日：2001-07-25
IPC分类号： H03M700
CPC分类号： H04N21/4302 , H04N7/52 , H04N21/242 , H04N21/4305
摘要： A system and method for generating a transport packet stream having an output formatted as an ASI group having a plurality of short and long ASI packets in a fixed sequence. The short and long ASI packet each have an associated transport packet and a fixed number of special idle characters and the transport packets are dispersed among the special idle characters.
摘要翻译： 一种用于产生传输分组流的系统和方法，该传输分组流具有格式化为具有固定序列中的多个短和长ASI分组的ASI组的输出。 短和长的ASI分组各自具有关联的传输分组和固定数量的特殊空闲字符，并且传输分组分散在特殊空闲字符之间。
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7.发明授权Method and apparatus for multiplexing complete MPEG transport streams from multiple sources using a PLL coupled to both the PCR and the transport encoder clock 失效使用耦合到PCR和传输编码器时钟的PLL来复用来自多个源的完整MPEG传输流的方法和装置
公开(公告)号：US5936968A
公开(公告)日：1999-08-10
申请号：US864324
申请日：1997-05-28
申请人： Paul W. Lyons
发明人： Paul W. Lyons
CPC分类号： H03L7/06 , H04N21/2365 , H04N21/242 , H04N21/2665 , H04N7/56 , H03L7/183 , H04L7/0331
摘要： A method and apparatus for splicing transport streams from multiple sources without violating the clock slew rates specified for a receiver. The method employs a digital phase lock loop (PLL) to lock both the transport output clock of the digital studio and the transmission symbol clock to a stable reference clock of 27 MHz.
摘要翻译： 一种用于在不违反为接收机指定的时钟转换速率的情况下从多个源拼接传输流的方法和装置。 该方法采用数字锁相环（PLL）将数字录音室的传输输出时钟和传输符号时钟锁定到27 MHz的稳定参考时钟。
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公开(公告)号：US4682230A
公开(公告)日：1987-07-21
申请号：US842644
申请日：1986-03-21
CPC分类号： H04N5/21 , G06T5/002 , G06T5/20 , G06T2207/20012 , G06T2207/20032
摘要： An adaptive median filter system is disclosed. Circuitry is arranged to produce successive sets of samples from an input signal which may possibly include noise. An adaptive median filter filters the samples in response to a control signal. Further circuitry estimates the relative density of the noise in the input signal to generate the control signal supplied to the adaptive median filter.
摘要翻译： 公开了一种自适应中值滤波系统。 电路布置成从可能包括噪声的输入信号产生连续的采样集。 自适应中值滤波器响应于控制信号对采样进行滤波。 另外的电路估计输入信号中的噪声的相对密度以产生提供给自适应中值滤波器的控制信号。
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