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21. 发明申请

WO2012047158A1 A CLIENT, A CONTENT CREATOR ENTITY AND METHODS THEREOF FOR MEDIA STREAMING 审中-公开
标题翻译：客户，内容创作者实体及其媒体流程的方法
公开(公告)号：WO2012047158A1
公开(公告)日：2012-04-12
申请号：PCT/SE2011/051176
申请日：2011-10-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , FRÖJDH, Per , EINARSSON, Torbjörn
发明人： FRÖJDH, Per , EINARSSON, Torbjörn
IPC分类号： H04N21/845 , H04N21/2387 , H04N21/2343 , H04N21/4402 , H04N21/6587
CPC分类号： H04L65/604 , H04L65/607 , H04L65/608 , H04L67/02 , H04N19/30 , H04N19/31 , H04N19/44 , H04N19/503 , H04N21/23439 , H04N21/2387 , H04N21/435 , H04N21/44008 , H04N21/440281 , H04N21/6125 , H04N21/6587 , H04N21/8455 , H04N21/8456
摘要： The embodiments of the present invention relate to methods and arrangements for accomplishing trick modes. This is achieved by assigning samples within a track to sample groups, wherein all samples within a sample group belong to one temporal level and by allowing the client to access one temporal level independently of lower temporal levels. In this way, the flexibility for the client regarding play out of different frame rates is increased which can result in a lower bandwidth utilization.
摘要翻译：本发明的实施例涉及用于完成特技模式的方法和装置。这通过将轨迹内的样本分配给采样组来实现，其中样本组内的所有采样属于一个时间级别，并且允许客户端独立于较低时间级别访问一个时间级别。以这种方式，客户端对于播放不同帧速率的灵活性增加，这可能导致较低的带宽利用率。

22. 发明申请

WO2010117316A1 METHODS AND ARRANGEMENTS FOR CREATING AND HANDLING MEDIA FILES 审中-公开
标题翻译：创建和处理媒体文件的方法和安排
公开(公告)号：WO2010117316A1
公开(公告)日：2010-10-14
申请号：PCT/SE2009/051347
申请日：2009-11-27
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , PRIDDLE, Clinton , FRÖJDH, Per , EINARSSON, Torbjörn
发明人： PRIDDLE, Clinton , FRÖJDH, Per , EINARSSON, Torbjörn
IPC分类号： H04L29/06 , H04N7/173
CPC分类号： H04L65/605 , H04N21/23439 , H04N21/8456 , H04N21/85406 , H04N21/8541
摘要： A file reading entity, such as a server or a client, and a method in the file reading entity for handling a fragmented media file provided from a file creating entity during HTTP streaming with adaptive progressive downloading. Once it has been determined that the media file comprise at least one alternative movie fragment, constituting an alternative to an associated movie fragment, one of these fragments is selected, such that is can then be transmitted or played out in a conventional manner. A file creating entity configured to provide a file comprising alternative movie fragments is also provided.
摘要翻译：诸如服务器或客户端的文件读取实体以及文件读取实体中的方法，用于在具有自适应渐进式下载的HTTP流传输期间处理从文件创建实体提供的分段媒体文件。一旦确定媒体文件包括至少一个备选电影片段，构成相关联的电影片段的替代，则选择这些片段中的一个，使得可以以常规方式发送或播放。还提供了被配置为提供包括备选电影片段的文件的文件创建实体。

23. 发明申请

WO2002051159A3 METHOD OF COMPRESSING DATA BY USE OF SELF-PREFIXED UNIVERSAL VARIABLE LENGTH CODE 审中-公开
公开(公告)号：WO2002051159A3
公开(公告)日：2002-06-27
申请号：PCT/SE2001/002863
申请日：2001-12-19
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , FRÖJDH, Per
IPC分类号： H04N7/30
摘要： Disclosed is a method of compressing data contained in variable length (VLC)or universal variable length code (UVLC) words to be carried in a digital bitstream.The method includes formatting a firs set of code words for data and then constructing a second set of code words containing code words from the firs set as well as concatenations of code words from the firs set. Code words from the second set are to carry data in compressed form in the digital bitstream. One way in which theconcatenation is accomplished includes selecting a code word from said first set ofcode words and applying it as a prefix to itself and to all of the other words in the firstset, therby constructing the second set. The code word selected from the first set for application as a prefix may be the shortest code word of the first set.

24. 发明申请

WO2003047268A3 GLOBAL MOTION COMPENSATION FOR VIDEO PICTURES 审中-公开
公开(公告)号：WO2003047268A3
公开(公告)日：2003-06-05
申请号：PCT/SE2002/002206
申请日：2002-11-29
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： SJÖBERG, Rickard , EINARSSON, Torbjörn , FRÖJDH, Per
IPC分类号： H04N7/26
摘要： A system and a method for coding and decoding video data are invented. In a system and method of video data compression a video frame (32) is divided into a sequence of image blocks (38), wherein one of several possible block-coding modes is an implicit global motion compensation (IGMC) mode, which is used to copy pixels from a previous frame (32) displaced by a predicted motion vector. In another embodiment of the invention, a system and method of a video data compression, a video frame (32) is segmented into a sequence of slices (36), wherein each slice (36) includes a number of macroblocks (38). Respective slices (36) are encoded and a signal is included in the header (44) of an encoded slice (40) to indicate whether the slice (40) is GMC enabled, that is, whether global motion compensation is to be used in reconstructing the encoded slice. If so, GMC information, such as information representing a set of motion vectors (42a-42d), is included with the slice. In a useful embodiment each slice (36) of a frame (32) contains the same GMC information, to enhance resiliency against errors. In another embodiment different slices (36) of a frame (32) contain different GMC information. In either embodiment, motion vectors (42a-42d) for each image of a particular encoded slice (40) can be reconstructed using GMC information contained only in the particular encoded slice.

25. 发明申请

WO2002096114A1 SELECTIVE PREDICTION FOR INTRA-CODING VIDEO DATA BLOCK 审中-公开
标题翻译：用于编码视频数据块的选择性预测
公开(公告)号：WO2002096114A1
公开(公告)日：2002-11-28
申请号：PCT/SE2002/001007
申请日：2002-05-24
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： EINARSSON, Torbjörn , SJÖBERG, Rickard , FRÖJDH, Per
IPC分类号： H04N7/26
CPC分类号： H04N19/107 , H04N19/176 , H04N19/593 , H04N19/61
摘要： In a method of video data compression a video frame in a sequence of frames is divided into a number of macroblocks, a particular macroblock being adjacent to a number of previously coded macroblocks including both intra-coded and inter-coded macroblocks. The method includes selecting either a full prediction or limited prediction type in encoding the particular macroblock to provide a corresponding data bit stream, full prediction using both adjacent inter-coded and intra-coded macroblocks, and limited prediction using intra-coded macroblocks only. A signal is provided along with the bit stream to indicate the selected prediction type to a decoder disposed to recover data from the bit stream. The prediction type may be either signaled explicitly, such as by providing a code word in the bit stream, or may be inferred implicitly by selected values or levels of a coding variable.
摘要翻译：在视频数据压缩的方法中，帧序列中的视频帧被划分为多个宏块，特定的宏块与包括帧内编码和帧间编码的宏块之间的多个先前编码的宏块相邻。该方法包括在编码特定宏块中选择全预测或受限预测类型以提供对应的数据比特流，使用相邻帧间编码和帧内编码宏块的全预测，以及仅使用帧内编码宏块的有限预测。与比特流一起提供信号以将所选择的预测类型指示到被设置为从比特流恢复数据的解码器。预测类型可以被明确地发信号通知，例如通过在比特流中提供码字，或者可以通过选择的编码变量的值或级别隐式推断。

26. 发明申请

WO2002076104A2 RUN-LENGTH CODING OF NON-CODED MACROBLOCKS 审中-公开
标题翻译：非编码MACROBLOCKS的长度编码
公开(公告)号：WO2002076104A2
公开(公告)日：2002-09-26
申请号：PCT/SE2002/000553
申请日：2002-03-20
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (publ)
发明人： FRÖJDH, Per , EINARSSON, Torbjörn , SJÖBERG, Rickard
IPC分类号： H04N7/26
CPC分类号： H04N19/132 , H04N19/107 , H04N19/176 , H04N19/61 , H04N19/70
摘要： A method of video data compression is provided which is comparatively efficient in compressing data, and at the same time enables transmission of compressed data with sufficient robustness to withstand losses in the transmission channel. A frame of data is divided into coded macroblocks and skipped macroblocks which are grouped into respective slices in a sequence of slices. Respective slices are allowed to contain arbitrary numbers of consecutive macroblocks, and can begin and end at arbitrary positions within the frame. A run-length codeword, comprising a small number of bits, is inserted at the end of a slice to indicate the total number of skipped macroblocks between the final coded macroblock and the end of the slice. To further enhance error resilience an additional codeword, which also indicates the total number of skipped macroblocks, may be inserted at the beginning of the next-following slice.
摘要翻译：提供了一种视频数据压缩方法，其在压缩数据方面比较有效，并且同时能够以足够的鲁棒性传输压缩数据以承受传输信道中的损耗。数据帧被划分成编码宏块和跳过的宏块，它们被分组成片段序列中的各个片段。允许各个片段包含任意数量的连续宏块，并且可以在帧内的任意位置开始和结束。包括少量位的游程长度码字被插入到片的末端，以指示最终编码宏块与片段结束之间的跳过宏块的总数。为了进一步增强错误恢复能力，也可以指示跳过的宏块的总数的附加代码字在下一个切片的开始处被插入。

27. 发明申请

WO2012057665A1 A FACE DATA ACQUIRER, END USER VIDEO CONFERENCE DEVICE, SERVER, METHOD, COMPUTER PROGRAM AND COMPUTER PROGRAM PRODUCT FOR EXTRACTING FACE DATA 审中-公开
标题翻译：面部数据采集器，终端用户视频会议设备，服务器，方法，计算机程序和计算机程序产品，用于提取面部数据
公开(公告)号：WO2012057665A1
公开(公告)日：2012-05-03
申请号：PCT/SE2010/051174
申请日：2010-10-28
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , FRÖJDH, Per , STRÖM, Jacob
发明人： FRÖJDH, Per , STRÖM, Jacob
IPC分类号： G06K9/00 , G06F17/30
CPC分类号： G06K9/00268 , G06F17/30793 , G06K9/00926 , G06K9/6255 , H04N7/147 , H04N7/15
摘要： It is presented a face data acquirer comprising: an image capture module arranged to capture an image from a video stream of a video conference; a face detection module arranged to determine a subset of the image, the subset representing a face; an identity acquisition module arranged to acquire an identity of a video conference participant coupled to the face represented by the subset of the image; and a face extraction module arranged to extract face data from the subset of the image and to determine whether to store the extracted face data for subsequent face recognition. A corresponding end user video conference device, server, method, computer program and computer program product are also provided.
摘要翻译：提供一种面部数据获取器，包括：图像捕获模块，被布置成从视频会议的视频流捕获图像; 面部检测模块被布置为确定图像的子集，所述子集表示脸部; 身份获取模块，被配置为获取耦合到由所述图像的子集表示的面部的视频会议参与者的身份; 以及面部提取模块，其被布置成从所述图像的子集中提取面部数据，并且确定是否存储所提取的面部数据以供随后的面部识别。还提供了相应的终端用户视频会议设备，服务器，方法，计算机程序和计算机程序产品。

28. 发明申请

WO2009088353A1 SYSTEMS AND METHODS FOR USING DC CHANGE PARAMETERS IN VIDEO CODING AND DECODING 审中-公开
标题翻译：在视频编码和解码中使用直流变化参数的系统和方法
公开(公告)号：WO2009088353A1
公开(公告)日：2009-07-16
申请号：PCT/SE2009/050005
申请日：2009-01-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , ANDERSSON, Kenneth , FRÖJDH, Per , SJÖBERG, Rickard , PRIDDLE, Clinton , SAMUELSSON, Jonatan
发明人： ANDERSSON, Kenneth , FRÖJDH, Per , SJÖBERG, Rickard , PRIDDLE, Clinton , SAMUELSSON, Jonatan
IPC分类号： H04N7/50 , H04N7/26
CPC分类号： H04N19/82 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/463 , H04N19/61 , H04N19/70
摘要： The present application discloses systems and methods for using DC change parameters in video coding. In one embodiment, the method includes the steps of: (a) obtaining a DC change parameter; (b) decoding encoded video data to obtain reconstructed pixel values; and (c) using the reconstructed pixel values, a filter, and the DC change parameter to obtain filtered reconstructed pixel values with a DC change.
摘要翻译：本申请公开了在视频编码中使用DC变化参数的系统和方法。在一个实施例中，该方法包括以下步骤：（a）获得DC变化参数; （b）解码编码的视频数据以获得重建的像素值; 以及（c）使用重建的像素值，滤波器和DC变化参数来获得具有DC变化的经滤波的重构像素值。

29. 发明申请

WO2013072080A1 MEDIA STREAMING IN MOBILE NETWORKS WITH IMPROVED EFFICIENCY 审中-公开
标题翻译：媒体在移动网络中的流动性提高
公开(公告)号：WO2013072080A1
公开(公告)日：2013-05-23
申请号：PCT/EP2012/063119
申请日：2012-07-05
申请人： Telefonaktiebolaget L M Ericsson (publ) , WILLARS, Per , FRÖJDH, Per , KARLSEN, Johnny , LOHMAR, Thorsten
发明人： WILLARS, Per , FRÖJDH, Per , KARLSEN, Johnny , LOHMAR, Thorsten
IPC分类号： H04L29/06 , H04W52/02 , H04L29/08
CPC分类号： H04L65/4069 , H04L65/1059 , H04L65/4076 , H04L65/4084 , H04L65/602 , H04L65/80 , H04L67/2823 , H04N21/234 , H04N21/2402 , H04N21/26258 , H04N21/26266 , H04N21/41407 , H04N21/44004 , H04N21/44209 , H04N21/4436 , H04N21/6125 , H04N21/6373 , H04N21/6543 , H04N21/8456
摘要： The invention relates to a mobile telecommunication device (22) comprising: - a receiver (40) for receiving content data via a mobile telecommunication network; - a play-out buffer (41) for holding downloaded but yet un-played content data; - a media reader (42) for reading content data at a media rate from the play-out buffer and for sending content to a display or speaker for rendering; - a segment request controller (46) for sending media segment requests to a remote server; - a buffer fill monitor (45) for checking a fill level of the play-out buffer, continuously or at least at the end of a media segment download. The segment request controller (46) is configured switch between a state of continuously requesting media segments and a state of not requesting any media segments. This switching is depending on the fill level. By restricting the download of segments, more and longer idle period are created which increases the chance that the radio state is switched down, so as to save battery and resources.
摘要翻译：本发明涉及一种移动电信设备（22），包括： - 经由移动电信网络接收内容数据的接收机（40）; - 用于保存下载但未播放的内容数据的播放缓冲器（41）; - 媒体读取器（42），用于从播放缓冲器以媒体速率读取内容数据，并将内容发送到显示器或扬声器进行渲染; - 用于向远程服务器发送媒体分段请求的分段请求控制器（46）; - 缓冲器填充监视器（45），用于连续地或至少在媒体段下载结束时检查播放缓冲器的填充级别。片段请求控制器（46）被配置为在连续请求媒体片段的状态和不请求任何媒体片段的状态之间切换。此切换取决于填充水平。通过限制片段的下载，产生了越来越多的空闲时间，增加了无线电状态关闭的机会，从而节省了电池和资源。

30. 发明申请

WO2013002709A1 INDICATING BIT STREAM SUBSETS 审中-公开
标题翻译：指示位流条款
公开(公告)号：WO2013002709A1
公开(公告)日：2013-01-03
申请号：PCT/SE2012/050685
申请日：2012-06-20
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ) , RUSERT, Thomas , WU, Zhuangfei , FRÖJDH, Per
发明人： RUSERT, Thomas , WU, Zhuangfei , FRÖJDH, Per
IPC分类号： H04N7/26 , H04N21/845
CPC分类号： H04N19/00903 , H04N19/33 , H04N19/597 , H04N19/70 , H04N19/85 , H04N21/8451
摘要： A method of indicating bit stream subsets in a compressed video bit stream is provided. The method comprises receiving the bit stream, dividing the bit stream into packets, wherein each packet comprises either one of video data or supplemental information, marking each packet (310–312, 320–322) with a first subset identifier (s0, s1) which is associated with a corresponding bit stream subset, and providing a first sequence parameter set (SPS) (310), marked with the same first subset identifier as its associated bit stream subset. The first SPS further comprises a second subset identifier (b1) indicating a decoding dependency (304) of the bit stream subset associated with the first subset identifier on a bit stream subset associated with the second subset identifier. Further, a method of extracting video packets from a video bit stream is provided. The method comprises receiving packets from the bit stream, extracting a first SPS (310), which is marked with the first subset identifier (s0) and further comprising the second subset identifier (b1), using the first and the second subset identifier as relevant subset identifiers, and, for each received packet (310–312, 320– 322), inspecting the first subset identifier (s0, s1) of the packet, and extracting, under the condition that the extracted first subset identifier matches one of the relevant subset identifiers, the packet from the bit stream.
摘要翻译：提供了一种在压缩视频比特流中指示比特流子集的方法。该方法包括接收比特流，将比特流分成分组，其中每个分组包括视频数据或补充信息中的任一个，用第一子集标识符（s0，s1）标记每个分组（310-312,320-322）其与相应的比特流子集相关联，并且提供用与其相关联的比特流子集相同的第一子集标识符标记的第一序列参数集（SPS）（310）。第一SPS还包括指示与第二子集标识符相关联的比特流子集与第一子集标识符相关联的比特流子集的解码依赖性（304）的第二子集标识符（b1）。此外，提供从视频比特流中提取视频分组的方法。该方法包括从比特流接收分组，提取用第一子集标识符（s0）标记并且还包括第二子集标识符（b1）的第一SPS（310），使用第一和第二子集标识符作为相关子集标识符，并且对于每个接收到的分组（310-312,320-322），检查分组的第一子集标识符（s0，s1），并且在提取的第一子集标识符匹配相关子集标识符，来自位流的数据包。

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