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1. 发明申请

WO0225952A3 REGENERATION OF PROGRAM CLOCK REFERENCE DATA FOR MPEG TRANSPORT STREAMS 审中-公开
标题翻译： MPEG运输流程序时钟参考数据的再生
公开(公告)号：WO0225952A3
公开(公告)日：2002-07-04
申请号：PCT/US0127191
申请日：2001-08-31
申请人： GEN INSTRUMENT CORP , NEMIROFF ROBERT S , LIU VINCENT , WU SIU-WAI
发明人： NEMIROFF ROBERT S , LIU VINCENT , WU SIU-WAI
IPC分类号： H04N7/26 , H04N21/2343 , H04N21/236 , H04N21/2365 , H04N7/24 , H04N7/58
CPC分类号： H04N21/2365 , H04N19/40 , H04N21/2343 , H04N21/23608
摘要： A system for providing an accurate time reference for multiple input and output digital video signals of a transcoder (100) that is particularly suited for use with MPEG data. The multiple streams are synchronized with a single master system time clock (155) at the transcoder (100). Timing data from the master clock is compared to timing data from packets that are input to the transcoder to determine an offset (120, 130). In particular, timing data, such as a program clock reference (PCR) field, is recovered from packets (104) of different channels that are input to the transcoder (122, 132). For each channel, timing data is then provided for packets (106) that are output from the transcoder based on the offset and timing data of the master clock (155) at the respective output times. In particular, the adjusted timing data is determined as a sum of the offset and an associated hardware error, less a delay (PcrSysDla) associated with the transcoder, which includes a lookahead delay and a buffer delay. The associated hardware error represents an error of the master clock and/or a system time clock of an encoder that encoded the particular channel.
摘要翻译：一种用于为特别适合于与MPEG数据一起使用的代码转换器（100）的多个输入和输出数字视频信号提供准确的时间基准的系统。多个流与代码转换器（100）处的单个主系统时钟（155）同步。将来自主时钟的定时数据与来自输入到代码转换器的分组的定时数据进行比较以确定偏移（120,130）。具体地，诸如节目时钟参考（PCR）字段的定时数据从输入到代码转换器（122,132）的不同信道的分组（104）中恢复。对于每个通道，随后基于在相应输出时间的主时钟（155）的偏移和定时数据从代码转换器输出的分组（106）提供定时数据。特别地，调整的定时数据被确定为偏移量和相关联的硬件错误之和，减去与代码转换器相关联的延迟（PcrSysDla），其包括前瞻延迟和缓冲延迟。相关联的硬件错误表示编码特定信道的编码器的主时钟和/或系统时钟的错误。

2. 发明申请

WO0225951A2 METHOD AND APPARATUS FOR DETERMINING A TRANSMISSION BIT RATE IN A STATISTICAL MULTIPLEXER 审中-公开
标题翻译：用于确定统计多路复用器中的传输比率的方法和设备
公开(公告)号：WO0225951A2
公开(公告)日：2002-03-28
申请号：PCT/US0127171
申请日：2001-08-31
申请人： GEN INSTRUMENT CORP , LIU VINCENT , WU SIU WAI , CASTELOES MICHAEL , STONE ROBERT J , LAM REBECCA
发明人： LIU VINCENT , WU SIU-WAI , CASTELOES MICHAEL , STONE ROBERT J , LAM REBECCA
IPC分类号： H04N7/26 , H04N21/234 , H04N21/2365 , H04N21/434 , H04N21/44 , H04N7/24
CPC分类号： H04N21/23655 , H04N19/15 , H04N21/2401
摘要： A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined (102, 104, 106) for each encoder (112, 114, 116) in a stat mux group, and an encoding bit rate is allocated to each channel based on its need parameter. A transmission bit rate is allocated to each channel as a time-lagged version of its need parameter to minimize a rate mismatch between the output and the input of a decoder buffer (184). A packet processor (250, 350) checks for impending decoder buffer overflow or underflow events to set minimum and maximum limits on the transmission bit rate. Moreover, these limits are set based on whether a new transmission bit rate can be implemented before the decoding time stamp (DTS) of the current or next frame.
摘要翻译：用于编码和多路复用数字电视数据的多个通道或多个HDTV数字电视数据面板的统计多路复用器。确定静态多路复用组中的每个编码器（112,114,116）的比特率需求参数（102,104,106），并且基于其需要参数将编码比特率分配给每个信道。传输比特率作为其需要参数的时滞版本分配给每个信道，以最小化解码器缓冲器（184）的输出和输入之间的速率失配。分组处理器（250,350）检查即将发生的解码器缓冲器溢出或下溢事件，以设置传输比特率的最小和最大限制。此外，根据在当前帧或下一帧的解码时间戳（DTS）之前是否可以实现新的传输比特率来设置这些限制。

3. 发明申请

WO2013040283A1 CODING AND DECODING SYNCHRONIZED COMPRESSED VIDEO BITSTREAMS 审中-公开
标题翻译：编码和解码同步压缩视频比特
公开(公告)号：WO2013040283A1
公开(公告)日：2013-03-21
申请号：PCT/US2012/055273
申请日：2012-09-14
申请人： GENERAL INSTRUMENT CORPORATION , NEMIROFF, Robert, S. , CHEN, Jing, Yang , LAM, Rebecca , VAN VELDHUISEN, Brenda, L. , WU, Siu-Wai
发明人： NEMIROFF, Robert, S. , CHEN, Jing, Yang , LAM, Rebecca , VAN VELDHUISEN, Brenda, L. , WU, Siu-Wai
IPC分类号： H04N21/2343 , H04N21/845 , H04N21/8547 , H04N7/26
CPC分类号： H04N21/23439 , H04N21/8456 , H04N21/8547
摘要： Coding may include receiving a source video bitstream including source frames and determining information from the source frames. The determined information may include timing information and grouping information and may be utilized in encoding synchronizing processed frames for a synchronized compressed video bitstream. Decoding may include receiving a synchronized compressed video bitstream including the encoding synchronizing processed frames. The decoding may include preparing video chunk files having boundaries defined by the encoding synchronizing processed frames and decoding the prepared video chunk files.
摘要翻译：编码可以包括接收包括源帧的源视频比特流和从源帧确定信息。确定的信息可以包括定时信息和分组信息，并且可以用于对同步的压缩视频比特流进行同步处理的帧的编码。解码可以包括接收包括编码同步处理帧的同步压缩视频比特流。解码可以包括准备具有由编码同步处理的帧定义的边界的视频块文件，并对准备的视频块文件进行解码。

4. 发明申请

WO2011130732A1 METHOD AND APPARATUS FOR DISTRIBUTION OF 3D TELEVISION PROGRAM MATERIALS 审中-公开
标题翻译：三维电视节目素材分发方法与装置
公开(公告)号：WO2011130732A1
公开(公告)日：2011-10-20
申请号：PCT/US2011/032858
申请日：2011-04-18
申请人： GENERAL INSTRUMENT CORPORATION , SCHAFFER, Mark L. , WU, Siu-Wai
发明人： SCHAFFER, Mark L. , WU, Siu-Wai
IPC分类号： H04N7/24 , H04N13/00 , H04N21/2343 , H04N21/236 , H04N21/235
CPC分类号： H04N13/161 , H04N13/194 , H04N19/597 , H04N21/2343 , H04N21/234309 , H04N21/234363 , H04N21/23608 , H04N21/2662
摘要： Method, apparatus and computer readable media for receiving a multiprogram program transport service that includes one or more compressed video services and one or more 3D-2D conversion options, generating an uncompressed video signal by performing a decoding portion of a transcoding operation for one of the one or more of the video services, determining from the 3D-2D conversion option whether a 3D-2D conversion is to be performed, performing a scale conversion on the uncompressed video according to a specified type of 3D-2D conversion, generating a compressed video service by performing an encoding portion of a transcoding operation on the uncompressed video that has been scale converted, and generating a second multiprogram program transport service that includes the compressed video signal that has been 3D-2D converted.
摘要翻译：用于接收包括一个或多个压缩视频服务和一个或多个3D-2D转换选项的多程序节目传输服务的方法，装置和计算机可读介质，通过执行解压缩操作的解码部分来生成未压缩的视频信号，一个或多个视频服务，根据3D-2D转换选项确定是否要执行3D-2D转换，根据指定类型的3D-2D转换对未压缩视频执行缩放转换，生成压缩视频通过对已经缩放转换的未压缩视频执行代码转换操作的编码部分，并且生成包括已被2D-2D转换的压缩视频信号的第二多路程序传输服务来进行服务。

5. 发明申请

WO2005020439A3 METHOD AND APPARATUS FOR SELECTION OF BIT BUDGET ADJUSTMENT IN DUAL PASS ENCODING 审中-公开
标题翻译：用于选择双通道编码中的双工预算调整的方法和装置
公开(公告)号：WO2005020439A3
公开(公告)日：2008-07-17
申请号：PCT/US2004025929
申请日：2004-08-10
申请人： GEN INSTR CORP A CORP OF THE S , HE YONG , WU SIU-WAI
发明人： HE YONG , WU SIU-WAI
IPC分类号： H04N7/12 , H03M20060101 , H04N7/26
CPC分类号： H04N19/86 , H04N19/115 , H04N19/12 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/172 , H04N19/194 , H04N19/61
摘要： The present invention discloses a system (100) and method for adaptive adjustment of bit budget based on the content of the input image sequence. In one embodiment, two encoders (110, 120) are employed in a dual pass encoding system. A first encoder (110) receives the input image sequence and encodes each frame of the image sequence using a standard or any predefined encoding algorithms. Specifically, by encoding the image sequence using the first encoder (110), the first encoder (110) is able to assess the complexity of each picture in the image sequence, e.g., by measuring the number of bits needed to encode each picture. This complexity information serves as look-ahead information for a second encoder (120).
摘要翻译：本发明公开了一种基于输入图像序列的内容对位预算进行自适应调整的系统（100）和方法。在一个实施例中，在双通道编码系统中采用两个编码器（110,120）。第一编码器（110）接收输入图像序列，并使用标准或任何预定义的编码算法对图像序列的每个帧进行编码。具体地，通过使用第一编码器（110）编码图像序列，第一编码器（110）能够例如通过测量编码每个图像所需的位数来评估图像序列中每个图像的复杂度。该复杂度信息用作第二编码器（120）的先行信息。

6. 发明申请

WO2005071959A1 METHOD AND APPARATUS FOR PROCESSING A BITSTREAM IN A DIGITAL VIDEO TRANSCODER 审中-公开
标题翻译：在数字视频转码器中处理一个BITSTREAM的方法和装置
公开(公告)号：WO2005071959A1
公开(公告)日：2005-08-04
申请号：PCT/US2005/000595
申请日：2005-01-10
申请人： GENERAL INSTRUMENT CORPORATION , NEMIROFF, Robert, S. , WU, Siu-Wai
发明人： NEMIROFF, Robert, S. , WU, Siu-Wai
IPC分类号： H04N7/12
CPC分类号： H04N19/198 , H04N19/115 , H04N19/124 , H04N19/137 , H04N19/14 , H04N19/142 , H04N19/15 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/196 , H04N19/40 , H04N19/48 , H04N19/61
摘要： [0052] A method and apparatus for processing a bitstream in a digital video transcoder is described. In one example, an adjustment factor is determined (408) that relates a number of bits representing a selected frame defined by the bitstream to a target number of bits for the selected frame. An average spatial activity value among sets of video data is associated (410) with the selected frame. A spatial activity value for a selected set of the sets of video data is determined (414). A normalized spatial activity value for the selected set of frequency video data is then computed (416) in response to the average spatial activity value, the spatial activity value, and a function of the adjustment factor. Target bit reduction for each of the sets of video data may be computed using a function of the normalized spatial activity value and the adjustment factor.
摘要翻译：描述了一种用于处理数字视频代码转换器中的位流的方法和装置。在一个示例中，确定调整因子（408），其将表示由比特流定义的所选帧的位的数量与所选择的帧的目标位数相关联。视频数据组中的平均空间活动值与所选择的帧相关联（410）。确定所选择的视频数据组集合的空间活动值（414）。然后响应于平均空间活动值，空间活动值和调整因子的函数来计算（416）所选择的频率视频数据集合的归一化空间活动值。可以使用归一化空间活动值和调整因子的函数来计算每组视频数据的目标比特缩减。

7. 发明申请

WO2003017677A3 VIDEO ENCODING METHOD 审中-公开
公开(公告)号：WO2003017677A3
公开(公告)日：2003-02-27
申请号：PCT/US2002/025296
申请日：2002-08-09
申请人： GENERAL INSTRUMENT CORPORATION , WU, Siu-Wai , LIU, Vincent
发明人： WU, Siu-Wai , LIU, Vincent
IPC分类号： H04N7/26
摘要： The invention relates to an improved system and method for encoding digital images within frames for digital television transmission. Every anchor frame in a first pass encoder is encoded as a P-frame. Groups of macroblocks, such as slices in the P-frame, are alternately encoded as I-slices and P-slices. This allows both I and P encoding complexity to be computed in a single pass, without having to encode the same frame twice. Accordingly, the I-frame decision can be made at a second pass encoder instead of at the first pass encoder, thus taking advantage of a look-ahead pipeline architecture to more effectively align the I-frames with scene changes.

8. 发明申请

WO02100110A2 SPLICING OF DIGITAL VIDEO TRANSPORT STREAMS 审中-公开
标题翻译：数字视频传输流的分布
公开(公告)号：WO02100110A2
公开(公告)日：2002-12-12
申请号：PCT/US0215499
申请日：2002-05-14
申请人： GEN INSTRUMENT CORP , LIU VINCENT , NEMIROFF ROBERT S , WU SIU-WAI
发明人： LIU VINCENT , NEMIROFF ROBERT S , WU SIU-WAI
IPC分类号： H04N21/234 , H04N21/236 , H04N21/81 , H04N7/24
CPC分类号： H04N21/23608 , H04N21/23424 , H04N21/812
摘要： A mechanism for splicing advertisements, local programming and the like into a digital video transport stream is provided. In order to achieve proper splicing, an appropriate number of frames is inserted between bitstream to properly close a GOP of the first bistream into which a second bitstream carrying the spliced content is inserted. Program clock references (PCRS) of the bitstreams are adjusted as necessary in order to force continuity between the bistreams. For inserting advertisements, the PCR of the program stream and ad stream can be tracked, and the PCR of the program stream can be used both before and after splicing. For local program insertion (which are typically substantially longer than advertisements), the PCR of the local program can be used, after adjustment thereof with an offset to maintain continuity at the splice point. The PTS an/or DTS of the inserted bistream can be modified to keep them continuous at the splice point for both video and audio streams. The spliced bitstream is transcoded to maintain a desired output bit rate, and to provide overflow/underflow protection of the video buffers.
摘要翻译：提供了一种用于将广告，本地编程等拼接成数字视频传输流的机制。为了实现适当的拼接，在比特流之间插入适当数量的帧以恰当地关闭插入了拼接内容的第二比特流的第一双向流的GOP。根据需要调整比特流的编程时钟参考（PCRS），以便强制双向传送器之间的连续性。为了插入广告，可以跟踪节目流和广播流的PCR，并且可以在拼接之前和之后使用节目流的PCR。对于本地程序插入（其通常比广告更长），可以使用本地程序的PCR进行调整之后使用偏移量来保持拼接点的连续性。可以修改插入的双向流的PTS a /或DTS，以使它们在视频和音频流的拼接点处保持连续。拼接的比特流被转码以保持期望的输出比特率，并提供视频缓冲器的溢出/下溢保护。

9. 发明申请

WO2003017677A2 FIRST PASS ENCODING OF I AND P-FRAME COMPLEXITY FOR COMPRESSED DIGITAL VIDEO 审中-公开
标题翻译：压缩数字视频第一次编码I和P帧复杂度
公开(公告)号：WO2003017677A2
公开(公告)日：2003-02-27
申请号：PCT/US2002/025296
申请日：2002-08-09
申请人： GENERAL INSTRUMENT CORPORATION , WU, Siu-Wai , LIU, Vincent
发明人： WU, Siu-Wai , LIU, Vincent
IPC分类号： H04N7/26
CPC分类号： H04N19/80 , H04N19/103 , H04N19/139 , H04N19/142 , H04N19/149 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/179 , H04N19/503 , H04N19/61
摘要： The invention relates to an improved system and method for encoding digital images within frames for digital television transmission. Every anchor frame in a first pass encoder is encoded as a P-frame. Groups of macroblocks, such as slices in the P-frame, are alternately encoded as I-slices and P-slices. This allows both I and P encoding complexity to be computed in a single pass, without having to encode the same frame twice. Accordingly, the I-frame decision can be made at a second pass encoder instead of at the first pass encoder, thus taking advantage of a look-ahead pipeline architecture to more effectively align the I-frames with scene changes.
摘要翻译：本发明涉及用于对用于数字电视传输的帧内的数字图像进行编码的改进的系统和方法。第一遍编码器中的每个锚帧被编码为P帧。诸如P帧中的切片的宏块组被交替地编码为I切片和P切片。这样可以在一次通过中计算I和P编码复杂度，而不需要对同一帧进行两次编码。因此，可以在第二遍编码器而不是在第一遍编码器处进行I帧决定，从而利用先行流水线架构来更有效地将I帧与场景变化对准。

10. 发明申请

WO2003017676A2 NOISE REDUCTION PRE-PROCESSOR FOR DIGITAL VIDEO USING PREVIOUSLY GENERATED MOTION VECTORS AND ADAPTIVE SPATIAL FILTERING 审中-公开
标题翻译：使用先前产生的运动矢量和自适应空间滤波的数字视频噪声预处理器
公开(公告)号：WO2003017676A2
公开(公告)日：2003-02-27
申请号：PCT/US2002/024867
申请日：2002-08-07
申请人： GENERAL INSTRUMENT CORPORATION , WU, Siu-Wai , CHEN, Jing, Yang
发明人： WU, Siu-Wai , CHEN, Jing, Yang
IPC分类号： H04N7/26
CPC分类号： G06T5/50 , G06T5/002 , G06T2207/10016 , G06T2207/20182 , G06T2207/20192 , H04N19/117 , H04N19/137 , H04N19/139 , H04N19/142 , H04N19/15 , H04N19/172 , H04N19/194 , H04N19/40 , H04N19/615 , H04N19/80
摘要： Noise is reduced in a video system by applying motion compensated temporal filtering using previously generated motion vectors and adaptive spatial filtering at scene change frames. Various types of noise can be introduced into video prior to compression and transmission. Artifacts arise from recording and signal manipulation, terrestrial or orbital communications, or during decoding. Noise introduced prior to image compression interferes with performance and subsequently impairs system performance: While filtering generally reduces noise in a video image, it can also reduce edge definition leading to loss of focus. Filtering can also tax system throughput, since increased computational complexity often results from filtering schemes. Furthermore, the movement of objects within frames, as defined by groups ofpixels, complicates the noise reduction process by adding additional complexity. In addition to improvements made to FIR spatial filtering, the present invention improves on previous filtering techniques by using Infinite Impulse Response (IIR) temporal filtering to reduce noise while maintaining edge definition. It also uses motion vectors previously calculated as part of the first-pass image encoding or alternatively by trans coding to reduce computational complexity for P-frame and B-frame image preprocessing. Single stage P-frame temporal noise filtering and double stage B-frame temporal noise filtering are presented.
摘要翻译：通过使用先前产生的运动矢量和场景变换帧的自适应空间滤波应用运动补偿时间滤波，在视频系统中降低噪声。在压缩和传输之前，可以将各种类型的噪声引入到视频中。人造物从记录和信号处理，地面或轨道通信或解码过程中产生。在图像压缩之前引入的噪声会干扰性能，从而影响系统性能：虽然滤波通常会降低视频图像中的噪声，但它也可以减少边缘定义，导致失去焦点。过滤还可以对系统吞吐量进行税收，因为增加的计算复杂度通常来自于过滤方案。此外，由像素组定义的帧内的对象的移动使噪声降低过程复杂化，增加了额外的复杂性。除了对FIR空间滤波进行的改进之外，本发明通过使用无限脉冲响应（IIR）时间滤波来降低噪声同时保持边缘定义来改进先前的滤波技术。它还使用先前作为第一遍图像编码的一部分计算的运动矢量，或者通过反编码来减少P帧和B帧图像预处理的计算复杂度。提出了单级P帧时间噪声滤波和双级B帧时域噪声滤波。

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