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21. 发明授权

US06573945B1 Logo insertion on an HDTV encoder 有权
标题翻译：标识插入HDTV编码器
公开(公告)号：US06573945B1
公开(公告)日：2003-06-03
申请号：US09481722
申请日：2000-01-12
申请人： Siu-Wai Wu , Robert Nemiroff
发明人： Siu-Wai Wu , Robert Nemiroff
IPC分类号： H04N726
CPC分类号： H04N19/439 , H04N19/467
摘要： An encoder and encoding method for inserting logos into a digital television signal. The logo insertion is performed at the front end of the encoder (e.g., prior to compression) by sharing the video capture frame buffer of the encoder, so there is no need for a separate logo inserter with a separate buffer, and encoding cost are reduced. An alpha blending function receives logo image and logo alpha map data for blending with input video data. The input video is retrieved from the frame buffer, and written back to the frame buffer after blending with the logo data. Subsequently, the frame buffer contents are provided to a pre-processing function for filtering and film mode detection. For a film mode frame, a drop field decision is provided from the pre-processing function to the frame buffer to drop the redundant field. The pre-processed video data is then provided for conventional compression processing. In an HDTV embodiment, several compressors are provided which each receive a panel of a video frame.
摘要翻译：一种将标志插入数字电视信号的编码器和编码方法。通过共享编码器的视频捕获帧缓冲器，在编码器的前端（例如，在压缩之前）执行徽标插入，因此不需要具有单独的缓冲器的单独的标识插入器，并且编码成本降低。阿尔法混合功能接收标志图像和标志阿尔法地图数据，用于与输入视频数据混合。从帧缓冲器检索输入视频，并在与标识数据混合后将其写回帧缓冲区。随后，将帧缓冲器内容提供给用于滤波和胶片模式检测的预处理功能。对于电影模式帧，从预处理功能向帧缓冲器提供丢弃场决定以丢弃冗余字段。然后提供预处理的视频数据用于常规压缩处理。在HDTV实施例中，提供了几个压缩机，每个压缩机都接收视频帧的面板。

22. 发明授权

US6108046A Automatic detection of HDTV video format 失效
标题翻译：自动检测HDTV视频格式
公开(公告)号：US6108046A
公开(公告)日：2000-08-22
申请号：US88786
申请日：1998-06-01
申请人： Siu-Wai Wu , Keming Joseph Chen , Erik Elstermann
发明人： Siu-Wai Wu , Keming Joseph Chen , Erik Elstermann
IPC分类号： H04N17/00 , H04N5/44 , H04N5/46 , H04N7/015 , H04N21/236 , H04N21/43 , H04N21/434 , H04N21/44
CPC分类号： H04N5/46 , H04N21/23602 , H04N21/4305 , H04N21/4342 , H04N21/44008 , H04N5/4401 , H04N7/015
摘要： A method and apparatus for automatically detecting the format of a high-definition television (HDTV) signal at a video encoder to allow proper encoding of the signal, including progressive and interlaced scan, and specific pixel and vertical line resolutions. The system is compatible with video standards such as the SMPTE and MPEG-2 standards. A video sample clock is determined by phase-locking clock pulses in a video signal to one of two or more available reference clocks. An SAV/EAV counter and pixel sample counter determine the horizontal resolution of the video, e.g., pixels per line. The system discriminates between 24 frames per second video and 30 frames per second video, and between a 720 line progressive scan signal and a 1080 line interlaced scan signal, for example. The system uses PLLs for each reference clock, where a lock range of the PLLs is narrow such that two PLLs will not lock at the same time for one input frequency. F bits in the video signal are used if required to distinguish progressive scan from interlaced scan.
摘要翻译：一种用于在视频编码器处自动检测高分辨率电视（HDTV）信号的格式以允许对包括渐进和隔行扫描以及特定像素和垂直线分辨率的信号进行适当编码的方法和装置。该系统与SMPTE和MPEG-2标准等视频标准兼容。通过将视频信号中的时钟脉冲相位锁定到两个或多个可用参考时钟之一来确定视频采样时钟。 SAV / EAV计数器和像素采样计数器确定视频的水平分辨率，例如，每行像素。该系统例如在24帧每秒视频和30帧每秒视频以及720行逐行扫描信号和1080行隔行扫描信号之间进行区分。该系统为每个参考时钟使用PLL，其中PLL的锁定范围较窄，使得两个PLL在一个输入频率下不会同时锁定。如果需要区分逐行扫描和隔行扫描，则使用视频信号中的F位。

23. 发明授权

US08154656B2 Capture buffer control methodology for caption carriage switch 有权
标题翻译：捕获字幕卡车开关的缓冲器控制方法
公开(公告)号：US08154656B2
公开(公告)日：2012-04-10
申请号：US12345128
申请日：2008-12-29
申请人： Yong He , Siu-Wai Wu
发明人： Yong He , Siu-Wai Wu
IPC分类号： H04N7/08
CPC分类号： H04N21/4348 , H04N21/235 , H04N21/23614 , H04N21/2362 , H04N21/2383 , H04N21/435 , H04N21/8133
摘要： A system, method, and computer readable medium for avoiding underflow of a caption buffer in a digital video encoding device. The method receives a sequence of digital video frames, and captions that correspond to the digital video frames in the sequence. The method receives first captions in a first caption carriage, and encodes the first captions, and the corresponding digital video frames, in a compressed video format. The method detects a switch from the first caption carriage to a second caption carriage, and stores second captions in the capture buffer, where each second caption is received in the second caption carriage and corresponds to one of the digital video frames in the sequence. The method examines the capture buffer and the second captions to determine whether underflow of the capture buffer is present or absent. When underflow is absent, the method encodes the second captions, and the corresponding digital video frames, in the compressed video format.
摘要翻译：一种用于避免数字视频编码装置中字幕缓冲器下溢的系统，方法和计算机可读介质。该方法接收数字视频帧的序列，以及与序列中的数字视频帧对应的标题。该方法在第一字幕托架中接收第一字幕，并以压缩视频格式对第一字幕和对应的数字视频帧进行编码。该方法检测从第一字幕托架到第二字幕托架的切换，并将第二字幕存储在捕获缓冲器中，其中每个第二标题在第二字幕托架中被接收，并且对应于序列中的数字视频帧之一。该方法检查捕获缓冲区和第二个字幕以确定捕获缓冲区的下溢是否存在或不存在。当不存在下溢时，该方法以压缩视频格式对第二字幕和相应的数字视频帧进行编码。

24. 发明授权

US07843824B2 Method and apparatus for statistically multiplexing services 有权
标题翻译：用于统计复用业务的方法和装置
公开(公告)号：US07843824B2
公开(公告)日：2010-11-30
申请号：US11620768
申请日：2007-01-08
申请人： Siu-Wai Wu
发明人： Siu-Wai Wu
IPC分类号： G01R31/08
CPC分类号： H04J3/1688 , H04N19/115 , H04N19/146 , H04N19/15 , H04N19/162 , H04N19/172 , H04N19/40 , H04N21/2365 , H04N21/23655 , H04N21/2383 , H04N21/26216 , H04N21/2662 , H04N21/4347
摘要： One aspect of the invention relates to statistically multiplexing first services and second services in a group. A measure of required bandwidth for the first services is obtained, where the first services comprise pre-encoded services. An available encoding bandwidth for the second services is determined from a group bandwidth for the first and second services using the measure of required bandwidth. An encoding bit rate is allocated to each of the second services based on the available encoding bandwidth. Each of the second services is encoded in accordance with the encoding bit rate thereof. One or more services of the first services and the second services are transcoded and a multiplex is formed. Since the available encoding bandwidth for the second services is determined using the measure of required bandwidth for the first services, transcoding of the second services is minimized, and video quality is maximized.
摘要翻译：本发明的一个方面涉及统一复用组中的第一服务和第二服务。获得第一服务所需带宽的度量，其中第一服务包括预编码服务。使用所需带宽的度量，从用于第一和第二服务的组带宽确定用于第二服务的可用编码带宽。基于可用编码带宽将编码比特率分配给每个第二服务。每个第二服务根据其编码比特率进行编码。第一服务和第二服务的一个或多个服务被转码并形成多路复用。由于使用第一服务的所需带宽的度量来确定第二服务的可用编码带宽，所以第二服务的代码转换被最小化，并且视频质量被最大化。

25. 发明授权

US07526001B2 Statistical multiplexer having protective features from extraneous messages generated by redundant system elements 有权
标题翻译：统计多路复用器具有由冗余系统元件产生的外部消息的保护特征
公开(公告)号：US07526001B2
公开(公告)日：2009-04-28
申请号：US10899859
申请日：2004-07-26
申请人： John Sanders , Erik J. Elstermann , Siu-Wai Wu
发明人： John Sanders , Erik J. Elstermann , Siu-Wai Wu
IPC分类号： H04J3/24 , H04J3/14 , G08C15/00
CPC分类号： H04N21/2365 , H04N21/23655
摘要： A statistical multiplexer includes a plurality of primary encoders 120 and at least one backup encoder 130 which is activated a primary encoder fails. The statistical multiplexer also includes at least two multiplexers 140,160 such that at any given time one of the multiplexers 140,160 is in an active state and the other is in a backup state. The encoders 120, 130, the multiplexers 140, 160, and a rate processor 150 employ a dynamic identity allocation arrangement for identifying a source of the messages such that messages originating from the encoders 120, 130 indicate whether the source is a primary 120 or backup encoder 130 and messages originating from the multiplexers 140, 160 include a character selected from among a predetermined sequence of characters that is incremented to the next character in the sequence each time one of the multiplexers 140, 160 transitions between an active and a backup state.
摘要翻译：统计多路复用器包括多个主编码器120和被激活的主编码器失效的至少一个备份编码器130。统计多路复用器还包括至少两个多路复用器140,160，使得在任何给定时间，多路复用器140,160之一处于活动状态，而另一个处于备用状态。编码器120,130，多路复用器140,160和速率处理器150采用动态标识分配装置来识别消息的源，使得源自编码器120,130的消息指示源是主节点120还是备用节点编码器130和来自多路复用器140,160的消息包括从每个多路复用器140,160中的一个在活动和备用状态之间转换时从预定序列的字符中选择的字符，该字符被递增到序列中的下一个字符。

26. 发明授权

US07274739B2 Methods and apparatus for improving video quality in statistical multiplexing 有权
标题翻译：提高统计复用视频质量的方法和装置
公开(公告)号：US07274739B2
公开(公告)日：2007-09-25
申请号：US10441334
申请日：2003-05-19
申请人： Siu-Wai Wu , Yong He
发明人： Siu-Wai Wu , Yong He
IPC分类号： H04N7/12
CPC分类号： H04N21/23655 , H04N19/107 , H04N19/115 , H04N19/117 , H04N19/14 , H04N19/15 , H04N19/152 , H04N19/177 , H04N19/194
摘要： The present invention provides methods and apparatus for improving video quality in statistical multiplexing. For each encoding channel in a statistical multiplexer, a respective bit rate need parameter is calculated for encoding of a current frame in that encoding channel. A video buffering verifier level (VBV_Fullness) available to each encoding channel is also calculated. It is then determined whether the VBV_Fullness available to each encoding channel is sufficient for encoding the current frame of that encoding channel based on an initial complexity estimate for that current frame. In the event that the VBV_Fullness is determined to be sufficient, the current frame is encoded using the need parameter. In the event that the VBV_Fullness is determined to be insufficient, the need parameter is scaled by an adaptive panic multiplier and the current frame is encoded using the scaled need parameter.
摘要翻译：本发明提供了用于提高统计复用中的视频质量的方法和装置。对于统计多路复用器中的每个编码信道，为编码该编码信道中的当前帧而计算相应的比特率需求参数。还计算对每个编码信道可用的视频缓冲验证器级（VBV_Fullness）。然后，基于该当前帧的初始复杂度估计，确定每个编码信道可用的VBV_Fullness是否足以编码该编码信道的当前帧。在VBV_Fullness被确定为足够的情况下，使用require参数对当前帧进行编码。在VBV_Fullness被确定为不足的情况下，需求参数由自适应紧急乘数缩放，并且使用缩放的需求参数对当前帧进行编码。

27. 发明申请

US20060109906A1 Methods and apparatus for dynamically adjusting f-codes for a digital picture header 审中-公开
公开(公告)号：US20060109906A1
公开(公告)日：2006-05-25
申请号：US11323892
申请日：2005-12-30
申请人： Robert Nemiroff , Siu-Wai Wu
发明人： Robert Nemiroff , Siu-Wai Wu
IPC分类号： H04N11/02 , H04N7/12 , H04N11/04 , H04B1/66
CPC分类号： H04N19/517 , H04N19/196 , H04N19/463 , H04N19/51
摘要： The present invention provides methods and apparatus for dynamically adjusting f-codes for a digital picture header of a coded picture. A video encoder having at least one motion estimation stages is provided for encoding the current picture. Motion vectors are determined for one motion estimation stage of the encoder. The motion vectors are analyzed to determine a maximum motion vector range for the picture. A corresponding minimum f-code is determined for the maximum range. The minimum f-code is then inserted into the digital picture header. In this manner, the f-codes carried in the digital picture header can be reduced to the minimum required value, thus reducing the number of bits needed to encode the f-codes.

28. 发明授权

US07039115B1 Processor allocation for channels in a video multi-processor system 有权
标题翻译：视频多处理器系统中的通道的处理器分配
公开(公告)号：US07039115B1
公开(公告)日：2006-05-02
申请号：US09666902
申请日：2000-09-20
申请人： Siu-Wai Wu
发明人： Siu-Wai Wu
IPC分类号： H04N7/12
CPC分类号： H04N21/23655 , H04N19/156 , H04N19/40 , H04N19/436
摘要： An efficient processing system, such as for transcoding video data. In a multi-processor embodiment, channels of data are assigned to processors to maximize the use of the processor resources. A channel complexity measure is made from a sample of each channel, and an accumulated complexity is maintained for each processor based on the complexity of the channels assigned to it. The channels are assigned to the processors such that the most complex channels are assigned first, and the processor with the least accumulated complexity receives the next channel assignment.
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。在多处理器实施例中，将数据通道分配给处理器以最大化处理器资源的使用。信道复杂度测量是从每个信道的样本进行的，并且基于分配给它的信道的复杂度为每个处理器保持累积的复杂度。信道被分配给处理器，使得最复杂的信道被首先分配，并且具有最小累积复杂度的处理器接收下一个信道分配。

29. 发明申请

US20050036549A1 Method and apparatus for selection of scanning mode in dual pass encoding 审中-公开
标题翻译：用于在双通道编码中选择扫描模式的方法和装置
公开(公告)号：US20050036549A1
公开(公告)日：2005-02-17
申请号：US10888268
申请日：2004-07-09
申请人： Yong He , Siu-Wai Wu
发明人： Yong He , Siu-Wai Wu
IPC分类号： G06F20060101 , H04N7/12 , H04N7/26
CPC分类号： H04N19/129 , H04N19/146 , H04N19/15 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/194 , H04N19/61
摘要： The present invention discloses a system and method for adaptive selection of scanning modes based on the content of the input image sequence. In one embodiment, two encoders are employed. A first encoder receives the input image sequence and encodes each frame of the image sequence using at least two different scanning modes, e.g., zigzag scanning mode or alternative scanning mode in accordance with the MPEG-2 standard or the like. Specifically, different portions of each frame will be scanned using different scanning modes. This first encoding provides look-ahead information so that a second encoder is able to assign DCT quantized coefficients in a more efficient scanning order, thereby reducing encoding bits and/or improving the picture quality.
摘要翻译：本发明公开了一种基于输入图像序列的内容自适应选择扫描模式的系统和方法。在一个实施例中，采用两个编码器。第一编码器使用至少两种不同的扫描模式（例如，根据MPEG-2标准等的锯齿形扫描模式或替代扫描模式）接收输入图像序列并对图像序列的每个帧进行编码。具体地，将使用不同的扫描模式来扫描每个帧的不同部分。该第一编码提供预先信息，使得第二编码器能够以更有效的扫描顺序分配DCT量化系数，从而减少编码比特和/或提高图像质量。

30. 发明授权

US5734419A Method of encoder control 失效
标题翻译：编码器控制方法
公开(公告)号：US5734419A
公开(公告)日：1998-03-31
申请号：US327530
申请日：1994-10-21
申请人： Nelson Botsford, III , Alireza Farid Faryar , Rajesh Hingorani , Kim Nigel Matthews , David Thomas , Siu-Wai Wu
发明人： Nelson Botsford, III , Alireza Farid Faryar , Rajesh Hingorani , Kim Nigel Matthews , David Thomas , Siu-Wai Wu
IPC分类号： G06T9/00 , H04N1/41 , H04N7/24 , H04N7/52 , H04N19/00 , H04N19/50 , H04N21/234 , H04N21/236 , H04N21/434 , H04N21/44 , H04N5/14
CPC分类号： H04N19/59 , H04N19/117 , H04N19/132 , H04N19/14 , H04N19/142 , H04N19/149 , H04N19/172 , H04N19/176 , H04N19/179 , H04N19/46 , H04N19/61 , H04N19/85 , H04N19/146 , H04N7/0112
摘要： A video encoder control system and method are disclosed for controlling a video encoder using a processor having a multiple field delay circuit for delaying input video data by a predetermined number of frames, and a statistics generator for generating statistics from the video data to control the encoder. The statistics generator calculates a sum of absolute values of field differences between pixels, with the sum used for detecting a redundant field, for generating a film flag, and for controlling the encoder using the film flag. The statistics generator calculates averages of blocks of pixels, and a fade detector uses the averages for detecting fades between successive frames to generate a fade flag to control the encoding. The rate controller responds to the statistics to change the resolution of the encoding of successive frames. The processor outputs the film flags, scene change flags, and fade flags to the rate controller to control the encoding of the delayed video data. A method is disclosed for controlling the video encoder including the steps of delaying the input video data, generating frame statistics, and controlling the encoder using the statistics.
摘要翻译：公开了一种用于使用具有用于将输入视频数据延迟预定帧数的多场延迟电路的处理器来控制视频编码器的视频编码器控制系统和方法，以及用于从视频数据产生统计数据以控制编码器。统计发生器计算像素之间的场差的绝对值之和，用于检测冗余场的和，用于产生胶片标志，以及使用胶片标志来控制编码器。统计生成器计算像素块的平均值，并且渐变检测器使用用于检测连续帧之间的渐变的平均值来生成淡入淡出标志来控制编码。速率控制器响应统计信息来改变连续帧编码的分辨率。处理器将电影标志，场景改变标志和淡入淡出标志输出到速率控制器以控制延迟的视频数据的编码。公开了一种用于控制视频编码器的方法，包括以下步骤：延迟输入视频数据，生成帧统计信息，并使用统计信息控制编码器。

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