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1. 发明申请

WO2004109582A2 A METHOD FOR RESTRUCTURING A GROUP OF PICTURES TO PROVIDE FOR RANDOM ACCESS INTO THE GROUP OF PICTURES 审中-公开
标题翻译：一种用于重组一组图像以提供随机访问到图像组的方法
公开(公告)号：WO2004109582A2
公开(公告)日：2004-12-16
申请号：PCT/US2004017113
申请日：2004-06-02
申请人： GEN INSTRUMENT CORP , LUTHRA AJAY
发明人： LUTHRA AJAY
IPC分类号： G06K20060101 , G06K9/36 , H04N7/26 , G06K
CPC分类号： H04N19/114
摘要： The present invention is a system and method for restructuring a group of pictures in such a manner as to provide for random access into the group of pictures without substantially degrading the quality of service for the video content. When encoding a current picture, if the current picture is an I picture, the current picture is encoded utilizing intra coding. If the current picture is not an I picture, and is not referenced by future pictures, the current picture is compressed using an arbitrary number of pictures in the past as a reference. If the current picture is not an I picture, and the current picture is not referenced by future pictures, the picture is compressed and the number of reference pictures in the past are limited so that picture prior to the last I picture are not used as a reference. This process continues W1til the conclusion of the group of pictures.
摘要翻译：本发明是一种用于重组一组图像的系统和方法，以便提供对图像组的随机访问，而不会基本上降低视频内容的服务质量。当对当前图像进行编码时，如果当前图像是I图像，则使用帧内编码对当前图像进行编码。如果当前图片不是I图片，并且未被图片引用，则使用过去的任意图片数来压缩当前图片作为参考。如果当前图片不是I图像，并且当前图片未被未来图片参考，则图像被压缩，并且过去的参考图片的数量受到限制，使得在最后的I图像之前的图像不被用作参考。这个过程继续W1til的结论组的图片。

2. 发明申请

WO2013032576A2 QUANTIZATION PARAMETER DERIVATION FROM QP PREDICTOR 审中-公开
标题翻译：量子参数从QP PREDICTOR衍生
公开(公告)号：WO2013032576A2
公开(公告)日：2013-03-07
申请号：PCT/US2012045299
申请日：2012-07-02
申请人： GEN INSTRUMENT CORP , PANUSOPONE KRIT , LUTHRA AJAY , WANG LIMIN , FANG XUE , KIM JAE HOON
发明人： PANUSOPONE KRIT , LUTHRA AJAY , WANG LIMIN , FANG XUE , KIM JAE HOON
CPC分类号： H04N19/124 , H04N19/136 , H04N19/159 , H04N19/176 , H04N19/463
摘要： A method for determining quantization parameters is provided. The method includes determining one or more first units of video content in a grouping of units and analyzing whether the one or more first units of video content within a region in the grouping of units have coefficients for the video content that are zero. The method then determines whether a quantization parameter for one or more second units of video content different from the one or more first units of video content is to be used to derive the quantization parameter for the one or more first units of video content. When the quantization parameter for the one or more second units of video content is to be used, the quantization parameter for the one or more first units of video content is derived from the quantization parameter for the one or more second units of video content.
摘要翻译：提供了一种用于确定量化参数的方法。该方法包括确定单元分组中的一个或多个视频内容的第一单元，并且分析单元分组内的区域内的视频内容的一个或多个第一单元是否具有为零的视频内容的系数。该方法然后确定用于与视频内容的一个或多个第一单元不同的视频内容的一个或多个第二单元的量化参数是否将用于导出视频内容的一个或多个第一单元的量化参数。当要使用视频内容的一个或多个第二单元的量化参数时，从视频内容的一个或多个第二单元的量化参数导出视频内容的一个或多个第一单元的量化参数。

3. 发明申请

WO2012178178A3 SELECTION OF PHASE OFFSETS FOR INTERPOLATION FILTERS FOR MOTION COMPENSATION 审中-公开
标题翻译：选择用于运动补偿的插值过滤器的相位偏移
公开(公告)号：WO2012178178A3
公开(公告)日：2013-02-21
申请号：PCT/US2012044039
申请日：2012-06-25
申请人： GEN INSTRUMENT CORP , MINOO KOOHYAR , BAYLON DAVID M , LOU JIAN , LUTHRA AJAY , PANUSOPONE KRIT , WANG LIMIN
发明人： MINOO KOOHYAR , BAYLON DAVID M , LOU JIAN , LUTHRA AJAY , PANUSOPONE KRIT , WANG LIMIN
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N19/132 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/51 , H04N19/523 , H04N19/82
摘要： In one embodiment, a method for encoding or decoding video content is provided. The method determines a plurality of sets of interpolation filters for use in interpolating sub-pel pixel values for a temporal prediction process of video content. Different sets of interpolation filters include different phase offset characteristics. A unit of video content is received. The method then selects one of the set of interpolation filters to interpolate a set of sub-pel pixel values for use in the temporal prediction process for the unit of video content based on characteristics associated with the encoding or decoding of the video content. The one of the set of interpolation filters is selected based on the phase offset characteristic of the one of the set of interpolation filters and the characteristics associated with the encoding or decoding.
摘要翻译：在一个实施例中，提供了一种用于编码或解码视频内容的方法。该方法确定用于内插用于视频内容的时间预测处理的子像素像素值的多组插值滤波器。不同的插值滤波器组包括不同的相位偏移特性。收到视频内容的单位。该方法然后基于与视频内容的编码或解码相关联的特征，选择一组插值滤波器来插值用于视频内容单元的时间预测处理中的一组子像素像素值。基于内插滤波器组中的一个的相位偏移特性和与编码或解码相关联的特性来选择该组内插滤波器中的一个。

4. 发明申请

WO0225950A3 LOAD BALANCING AND MODE SELECTION IN A MULTI-PROCESSOR VIDEO TRANSCODER 审中-公开
标题翻译：多处理器视频转换器中的负载平衡和模式选择
公开(公告)号：WO0225950A3
公开(公告)日：2003-08-28
申请号：PCT/US0125878
申请日：2001-08-20
申请人： GEN INSTRUMENT CORP , LIU VINCENT , NEMIROFF ROBERT S , WU SIU-WAI , LUTHRA AJAY , WANG LIMIN
发明人： LIU VINCENT , NEMIROFF ROBERT S , WU SIU-WAI , LUTHRA AJAY , WANG LIMIN
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/40 , H04N19/156 , H04N19/42 , H04N19/436 , H04N19/61
摘要： An efficient processing system, such as for transcoding video data. In an embodiment that is suitable for single or multiple processor embodiments, a processing mode is set for each input video frame, e.g., as a full transcode mode (740), which uses motion compensation, a requantization mode (755), which avoids motion compensation, or a bypass mode (750). The processing mode selection is based on a number or processing cycles that are available to process a frame, and an expected processing requirement of the frame. The bypass or requantization modes are selected to avoid a buffer overflow of the processor.
摘要翻译：一种高效的处理系统，例如用于对视频数据进行代码转换。在适用于单个或多个处理器实施例的实施例中，为每个输入视频帧设置处理模式，例如，使用运动补偿的全代码转换模式（740），避免运动的重新排序模式（755）补偿或旁路模式（750）。处理模式选择基于可用于处理帧的数量或处理周期以及帧的预期处理要求。选择旁路或再量化模式以避免处理器的缓冲区溢出。

5. 发明申请

WO02084911A3 MULTI-RATE TRANSCODER FOR DIGITAL STREAMS 审中-公开
标题翻译：用于数字流的多速度传输器
公开(公告)号：WO02084911A3
公开(公告)日：2003-03-27
申请号：PCT/US0207772
申请日：2002-03-15
申请人： GEN INSTRUMENT CORP , WANG LIMIN , LUTHRA AJAY
发明人： WANG LIMIN , LUTHRA AJAY
IPC分类号： H03M7/30 , H04J3/00 , H04L12/20 , H04N7/26 , H04N21/2343 , H04N21/236 , H04N21/24 , H04N21/258 , H04N21/2662 , H04N21/6373 , H04N7/24
CPC分类号： H04N21/2405 , H04N19/156 , H04N19/20 , H04N19/40 , H04N21/234354 , H04N21/23439 , H04N21/236 , H04N21/25833 , H04N21/2662 , H04N21/6373
摘要： Methods and apparatus are provided to produce a plurality of different rate output bitstreams from a common input bit stream. Overhead data (30) is extracted from the input bit stream. The input bit stream is partially decoded (62). Thereafter, the at least partially decoded bit stream is re-encoded at different rates (64A, 64B... 64N), to produce multiple re-encoded bit streams (STREAM 1, STREAM 2... STREAM N) having different rates. The overhead data (30) is combined (60) with each re-encoded bit stream, thereby providing multiple versions of said encoded bit stream at different rates.
摘要翻译：提供方法和装置以从公共输入比特流产生多个不同速率的输出比特流。从输入比特流中提取开销数据（30）。输入比特流被部分解码（62）。此后，至少部分解码的比特流以不同的速率（64A，64B ... 64N）进行重新编码，以产生具有不同速率的多个重编码比特流（STREAM 1，STREAM 2 ... STREAM N）。开销数据（30）与每个重新编码的比特流组合（60），从而以不同的速率提供所述编码比特流的多个版本。

6. 发明申请

WO0228108A3 STATISTICAL REMULTIPLEXING WITH BANDWIDTH ALLOCATION AMONG DIFFERENT TRANSCODING CHANNELS 审中-公开
标题翻译：带有不同转码通道的带宽分配的统计重新映射
公开(公告)号：WO0228108A3
公开(公告)日：2002-10-31
申请号：PCT/US0127243
申请日：2001-09-04
申请人： GEN INSTRUMENT CORP , WU SIU-WAI , NEMIROFF ROBERT S , LIU VINCENT , LUTHRA AJAY
发明人： WU SIU-WAI , NEMIROFF ROBERT S , LIU VINCENT , LUTHRA AJAY
IPC分类号： H04N7/26 , H04N7/50 , H04N21/236 , H04N21/2365 , H04N7/24
CPC分类号： H04N21/23608 , H04N19/115 , H04N19/126 , H04N19/15 , H04N19/152 , H04N19/176 , H04N19/196 , H04N19/197 , H04N19/40 , H04N19/61 , H04N21/23655
摘要： An efficient statistical remultiplexer for processing a number of channels that include video data. In one aspect, transcoding of the video data is delayed while statistical information is obtained from the data. Bit rate need parameters for the data are determined based on the statistical information, and the video data is transcoded (110, 112, 200, 300) based on the respective bit rate need parameters following the delay. In another aspect, a transcoding bit rate for video frames is updated a plurality of times at successive intervals to allow a closer monitoring of the bit rate. Minimum and maximum bounds for the transcoding bit rate, e.g., for buffer overflow and underflow protection, are also updated in each interval. In another aspect, the pre-transcoding quantization scales of the macroblocks in a frame are scaled to provide corresponding new quantization scales of the macroblocks in a frame are scaled to provide corresponding new quantization scales for transcoding based on a ratio of pre-transcoding amount of data in the frame and a target, post-transcoding amount of data for the frame. The quantization scales are adjusted for different poritons of the frame as transcoding progresses to ensure that a minimum amount of transcoding bandwidth is allocated to each macroblock.
摘要翻译：一种高效的统计再复用器，用于处理包含视频数据的多个通道。在一个方面，视频数据的转码被延迟，同时从数据获得统计信息。基于统计信息确定数据的比特率需求参数，并且基于延迟之后的相应比特率需要参数对视频数据进行代码转换（110,112,200,300）。在另一方面，用于视频帧的转码比特率以连续的间隔多次更新以允许对比特率进行更密切的监视。转码比特率的最小和最大范围（例如，用于缓冲区溢出和下溢保护）也在每个间隔中更新。另一方面，缩放帧中宏块的预代码转换量化比例以提供帧中宏块的对应新量化比例，以基于预编码转换量的比率来缩放以提供用于转码的对应新量化比例帧和目标中的数据，帧的转码后数据量。量化比例随着代码转换的进行而针对帧的不同区域进行调整，以确保将最小量的代码转换带宽分配给每个宏块。

7. 发明申请

WO0013419A3 DYNAMIC BIT ALLOCATION FOR STATISTICAL MULTIPLEXING OF COMPRESSED AND UNCOMPRESSED DIGITAL VIDEO SIGNALS 审中-公开
标题翻译：动态比特分配用于压缩和未压缩数字视频信号的统计复用
公开(公告)号：WO0013419A3
公开(公告)日：2000-06-15
申请号：PCT/US9916595
申请日：1999-07-22
申请人： GEN INSTRUMENT CORP
发明人： WANG LIMIN , LUTHRA AJAY
IPC分类号： H04N7/32 , H04J3/00 , H04N7/08 , H04N7/081 , H04N7/50 , H04N21/2365 , H04N21/434 , H04N7/58
CPC分类号： H04N21/23655 , H04N19/105 , H04N19/115 , H04N19/126 , H04N19/137 , H04N19/14 , H04N19/152 , H04N19/162 , H04N19/172 , H04N19/177 , H04N19/40 , H04N19/61 , H04N19/70
摘要： The present invention relates to a method and apparatus for allocating bits in a statistical multiplexing system (stat mux). A statistical multiplexer (stat mux) (600) accommodates both compressed and uncompressed video programs using transcoding (640, 650) and encoding (620, 630), respectively. Hierarchical dynamic bit allocation is used, starting from a super GOP level (700, 702, 704, 800, 900), then to a super frame level (902; 904; 908; 909), and then to the regular (individual) frame level (910, 920, 930, 990; 912, 922, 932, 992; 916, 926, 936, 996; 918, 928, 938, 998). At each level, a target number of bits (T1, T2, TL-1, TL) is determined. A target number of bits for a super frame, which is a collection of frames across all channels at a given frame instance (t1, 2t1, 3t1...), is adaptive and is able to address any combination of picture types. Frames of the same picture type for a program are generally assigned the same (or similar) number of bits. Relative program quality can be controlled using a program priority weighting factor (w). Additionally, constraints on target bit rates and minimum and maximum bit rates are provided.
摘要翻译：本发明涉及一种在统计复用系统（stat mux）中分配比特的方法和装置。统计多路复用器（统计多路复用器）（600）分别使用代码转换（640,650）和编码（620,630）来容纳压缩和未压缩的视频节目。使用分层动态比特分配，从超级GOP级别（700,702,704,800,900）开始，然后到超级帧级别（902; 904; 908; 909），然后到规则（单独）帧（910,920,930,990; 912,922,932,992; 916,926,936,996; 918,928,938,998）。在每个级别，确定目标位数（T1，T2，TL-1，TL）。超帧的目标比特数是在给定帧实例（t1，2t1,3t1 ...）处的所有信道上的帧的集合，是自适应的并且能够处理任何图像类型的组合。通常为一个节目分配相同图像类型的帧的相同（或类似）数量的比特。相对节目质量可以使用节目优先权重因子（w）来控制。另外，还提供了对目标比特率和最小和最大比特率的限制。

8. 发明申请

WO03047272A2 MACROBLOCK LEVEL ADAPTIVE FRAME/FIELD CODING FOR DIGITAL VIDEO CONTENT 审中-公开
标题翻译： MACROBLOCK LEVEL自适应帧/数字视频内容的现场编码
公开(公告)号：WO03047272A2
公开(公告)日：2003-06-05
申请号：PCT/US0237739
申请日：2002-11-21
申请人： GEN INSTRUMENT CORP
发明人： WANG LIMIN , GANDHI RAJEEV , PANUSOPONE KRIT , LUTHRA AJAY
IPC分类号： G06T9/00 , H03M7/36 , H04N19/105 , H04N19/137 , H04N19/51 , H04N7/36
CPC分类号： H04N19/105 , H04N19/112 , H04N19/137 , H04N19/573
摘要： A method and system of encoding and decoding digital video content. The digital video content comprises a stream of pictures which can each be intra, predicted, or bi-predicted pictures. Each of the pictures comprises macroblocks that can be further divided into smaller blocks. The method entails encoding and decoding each of the smaller blocks in each picture in said stream of pictures in either frame mode or in field mode.
摘要翻译：数字视频内容的编码和解码方法和系统。数字视频内容包括可以是帧内，预测或双预测图像的图像流。每个图像包括可以进一步分割成较小块的宏块。该方法需要在帧模式或场模式下对所述图像流中的每个图像中的每个较小块进行编码和解码。

9. 发明申请

WO0070877A3 METHOD AND ARCHITECTURE FOR CONVERTING MPEG-2 4:2:2-PROFILE BITSTREAMS INTO MAIN-PROFILE BITSTREAMS 审中-公开
标题翻译：将MPEG-2 4：2：2配置文件转换为主配置文件的方法和架构
公开(公告)号：WO0070877A3
公开(公告)日：2001-06-28
申请号：PCT/US0003870
申请日：2000-02-16
申请人： GEN INSTRUMENT CORP
发明人： CHEN XUEMIN , WANG LIMIN , LUTHRA AJAY , EIFRIG ROBERT O
IPC分类号： G06T9/00 , H04N7/26
CPC分类号： H04N19/186 , H04N19/40
摘要： A system for converting the color format of a digital video bitstream. The system accounts for the allowable formats of the pre- and post-conversion bitstreams, including quantizer (355) precision level, and whether luma and chroma data have separate quantization matrices (385, 390), or share a common quantization matrix. In a particular implementation, an MPEG-2 4:2:2P bitstream having a color format of 4:2:2 or 4:2:0 is converted to an MP bitstream having a color format of 4:2:0. Coding efficiencies are achieved by using the luma quantization matrix (390) to re-quantize the chroma data, and re-using luma motion vectors MV for performing motion compensation (320, 325, 510) of the chroma data. Further efficiencies can be achieved by representing a 4:2:2 reference picture in a 4:2:0 format for converting intercoded frames, and changing the position of a pixel downsizing filter (340) and clip function (335). Adjustment (130, 230, 382), of the quantization precision is provided as required. A transcoding function (800) can also be achieved.
摘要翻译：一种用于转换数字视频比特流的颜色格式的系统。系统考虑了转换前和转换后比特流的允许格式，包括量化器（355）精度级别，以及亮度和色度数据是否具有单独的量化矩阵（385,390），或共享公共量化矩阵。在具体实现中，将具有4:2:2或4:2:0的颜色格式的MPEG-2 4：2：2P比特流转换为具有4:2:0的颜色格式的MP比特流。通过使用亮度量化矩阵（390）来重新量化色度数据并重新使用亮度运动矢量MV来执行色度数据的运动补偿（320,325,510）来实现编码效率。通过以4：2：0格式表示4：2：2参考图像来转换帧间编码帧，以及改变像素缩小滤波器（340）和剪辑功能（335）的位置，可以实现更高的效率。根据需要提供量化精度的调整（130,230,382）。还可以实现代码转换功能（800）。

10. 发明申请

WO2004056057A3 METHOD AND APPARATUS FOR PROVIDING A BUFFER ARCHITECTURE TO IMPROVE PRESENTATION QUALITY OF IMAGES 审中-公开
标题翻译：用于提供缓冲结构以提高图像呈现质量的方法和装置
公开(公告)号：WO2004056057A3
公开(公告)日：2005-06-16
申请号：PCT/US0339858
申请日：2003-12-15
申请人： GEN INSTRUMENT CORP
发明人： XU HAIFENG , DIAMAND JOE , LUTHRA AJAY
IPC分类号： H04L12/28 , H04L12/56 , H04N7/24
CPC分类号： H04N21/23406 , H04N21/44004
摘要： A method and apparatus that employ a buffer management architecture to address various video quality issues that may occur at a client player are disclosed. The present invention employs one or more buffers to assist in the scheduling and delivery of rendered content to a player's output system. In one embodiment, the system employs a packet buffer, a frame buffer and an image buffer. One useful advantage of the present invention is the control of these buffers to meet a predefined QoS, thereby ensuring factors that may negatively affect the QoS in the real-time transport of high bandwidth content will be minimized.
摘要翻译：公开了一种采用缓冲器管理架构来解决客户端播放器可能发生的各种视频质量问题的方法和装置。本发明采用一个或多个缓冲器来帮助将播放的内容调度和传送给玩家的输出系统。在一个实施例中，系统采用分组缓冲器，帧缓冲器和图像缓冲器。本发明的一个有益的优点是控制这些缓冲器以满足预定义的QoS，从而确保可能对高带宽内容的实时传输中的QoS负面影响的因素最小化。

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