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公开(公告)号：EP3018881A1
公开(公告)日：2016-05-11
申请号：EP15201461.9
申请日：2011-02-16
IPC分类号： H04L29/06
CPC分类号： H04L65/60 , H04L65/4084 , H04L65/607 , H04L65/80 , H04L67/02 , H04L67/42
摘要： A method of controlling adaptive HTTP streaming of media content between a HTTP server and a HTTP client in a communication system, in which system media content is arranged as a plurality of periods, and each such period comprises a plurality of representations of media segments, which method includes the steps of providing (S10) temporal alignment information for the media segments of the plurality of representations, which temporal alignment information provides indications about a temporal relation between the segments of the plurality of representations of the media content. Further, the method includes providing (S20) key frame location information for the media segments, which key frame location information provides indications about locations of key frames in the media segments of the plurality of representations. Finally, controlling (S30) adaptation of the HTTP streaming of the media content based on at least one of the provided temporal alignment information and the provided key frame location information.
摘要翻译： 一种控制通信系统中HTTP服务器和HTTP客户端之间的媒体内容的自适应HTTP流式传输的方法，其中系统媒体内容被安排为多个时段，并且每个这样的时段包括多个媒体段表示， 方法包括以下步骤：为多个表示的媒体片段提供（S10）时间对准信息，该时间对准信息提供关于媒体内容的多个表示的片段之间的时间关系的指示。 此外，该方法包括提供（S20）媒体片段的关键帧位置信息，该关键帧位置信息提供关于关键帧在多个表示的媒体片段中的位置的指示。 最后，基于所提供的时间对准信息和所提供的关键帧位置信息中的至少一个来控制（S30）媒体内容的HTTP流的适配。
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公开(公告)号：EP2781070A1
公开(公告)日：2014-09-24
申请号：EP12733108.0
申请日：2012-07-05
发明人： WILLARS, Per , FRÖJDH, Per , KARLSEN, Johnny , LOHMAR, Thorsten
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.
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公开(公告)号：EP2491723A1
公开(公告)日：2012-08-29
申请号：EP10825290.9
申请日：2010-10-18
发明人： FRÖJDH, Per , PRIDDLE, Clinton , RUSERT, Thomas
IPC分类号： H04N13/00
CPC分类号： H04N19/597 , H04N13/139 , H04N13/156 , H04N13/161 , H04N13/178 , H04N13/194
摘要： Methods and arrangements for compression and de-compression of N-stream multi-view 3D video in data handling entities, e.g. a data providing node and a data presenting node. The methods and arrangements involve multiplexing (802) of at least some of the N streams of the N-stream multi-view 3D video into one pseudo 2D stream, which appears as a 2D video stream to a 2D encoder. Further, the pseudo 2D stream is provided (804) to a replaceable 2D encoder, for encoding of the pseudo 2D stream, resulting in encoded data having a 2D codec format. This codec-agnostic modular approach to 3D compression and de-compression ensures a fast and convenient access to flexible virtual 3D codecs for handling of N-stream multi-view 3D video.
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公开(公告)号：EP2241112B1
公开(公告)日：2012-06-27
申请号：EP09701361.9
申请日：2009-01-08
IPC分类号： H04N7/26
CPC分类号： H04N19/82 , H04N19/117 , H04N19/136 , H04N19/176 , H04N19/463 , H04N19/61 , H04N19/70
摘要： A method of encoding a plurality of adaptive filter coefficients (104, 107, 112) into a bitstream (110). The method comprises the steps of entropy encoding (109) the adaptive filter coefficients (104, 107, 112) into the bitstream (110), whereby a prediction (202) for an instance (204) of the adaptive filter coefficients is determined (201 ) based on at least one of the remaining adaptive filter coefficients (206), a prediction error (205) is determined (203) based on the difference between the instance (204) of the adaptive filter coefficients and the prediction (202), and wherein the step of entropy encoding (109) the plurality of adaptive filter coefficients (104, 107, 112) comprises entropy encoding (109) the prediction error (205) for the instance (204) of the adaptive filter coefficients and entropy encoding (109) the remaining adaptive filter coefficients (206). Further is provided a corresponding method of decoding a bitstream (110) of encoded adaptive filter coefficients into decoded adaptive filter coefficients (116, 118, 120, 123).
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公开(公告)号：EP2421265A1
公开(公告)日：2012-02-22
申请号：EP11186282.7
申请日：2007-01-04
IPC分类号： H04N7/24 , H04N7/66 , H04N21/2381 , H04N21/254 , H04N21/262 , H04N21/61 , H04N21/6375 , H04N21/6377 , H04N21/6405 , H04N21/643 , H04N21/658 , H04N21/854 , H04L1/00 , H04L1/18
CPC分类号： H04N21/64315 , H04L1/004 , H04L1/0084 , H04L1/1819 , H04L12/1877 , H04L65/607 , H04L67/06 , H04N19/61 , H04N19/66 , H04N19/67 , H04N21/2381 , H04N21/254 , H04N21/26216 , H04N21/6131 , H04N21/6181 , H04N21/6375 , H04N21/6377 , H04N21/6405 , H04N21/658 , H04N21/85406
摘要： The invention teaches a media container file (1) comprising media data organized into media source blocks (20;22;24). Forward error correction (FEC) redundancy data is pre-calculated for the different source blocks (20;22;24) and organized into the container file (1) as different FEC reservoirs (30;32;34). The container file (1) also comprises meta data (40;45) providing an association between the media source blocks (20;22;24) and the respective FEC reservoirs (30;32;34). The container file (1) can be employed by a media server (200) in a media session for compiling media data packets to be transmitted to requesting clients (400;410;420) without the need of extensive data processing and FEC calculation. The container file can also be employed in a post-session repair procedure.
摘要翻译： 本发明教导了一种媒体容器文件（1），其包括组织在媒体源块（20; 22; 24）中的媒体数据。 对于不同的源块（20; 22; 24）预先计算了前向纠错（FEC）冗余数据，并将其组织成作为不同FEC存储器（30; 32; 34）的容器文件（1）。 容器文件（1）还包括提供媒体源块（20; 22; 24）和相应FEC存储器（30; 32; 34）之间的关联的元数据（40; 45）。 容器文件（1）可以由媒体会话中的媒体服务器（200）采用，用于编译要发送到请求客户端（400; 410; 420）的媒体数据分组，而不需要进行广泛的数据处理和FEC计算。 容器文件也可用于会话后修复过程。
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公开(公告)号：EP2052549A1
公开(公告)日：2009-04-29
申请号：EP07748279.2
申请日：2007-06-25
发明人： FRÖJDH, Per , PRIDDLE, Clinton
IPC分类号： H04N7/64
CPC分类号： H04N19/188 , H04N19/895
摘要： A media stream (1) comprising rich media scene packets (10, 12) and scene update packets (20, 30, 40) is complemented with a data packet (20) defining an exit point for interrupting rendering rich media of the stream (1) and a scene update packet (30) associated with the data packet (20) and defining an entry point back to rendering rich media of the stream (1). The exit-entry point pair defines an alternative media rendering route (5) that can be used by user terminals (100) to recover from errors (45) in the media stream (1).
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公开(公告)号：EP1977611B1
公开(公告)日：2013-01-16
申请号：EP06835819.1
申请日：2006-11-29
发明人： TALEB, Anisse , FRÖJDH, Per
IPC分类号： H04N7/52
CPC分类号： H04N21/4341 , H04N21/2335 , H04N21/234327 , H04N21/23439 , H04N21/2368 , H04N21/2385 , H04N21/2402 , H04N21/2662 , H04N21/85406
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公开(公告)号：EP2526674A1
公开(公告)日：2012-11-28
申请号：EP11733154.6
申请日：2011-01-13
发明人： PRIDDLE, Clinton , FRÖJDH, Per , LOHMAR, Thorsten , WU, Zhuangfei
CPC分类号： H04N5/783 , H04L65/1059 , H04L65/4076 , H04L65/604 , H04N21/2387 , H04N21/25833 , H04N21/4516 , H04N21/454 , H04N21/47202
摘要： Methods and arrangements in a client node and a server node support a decision on decoding and playout of a certain content in the client node. The methods and arrangements relate to the determining, conveying and obtaining of information related to the characteristics (level) required for decoding and playing out the certain media content at a non-regular playout rate. The method and arrangement in the client node further relate to determining, based on the obtained information, which playout rate(s) is/are supported by the client node in regard of level. The methods and arrangements enable the client node to refrain from attempting to decode and play out of the content at a non-regular rate requiring a level which is not supported by the client node.
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公开(公告)号：EP2417772A1
公开(公告)日：2012-02-15
申请号：EP09843130.7
申请日：2009-11-06
发明人： PRIDDLE, Clinton , FRÖJDH, Per , NORKIN, Andrey
CPC分类号： H04N5/91 , G11B27/30 , H04N9/7921 , H04N9/8042 , H04N9/8205 , H04N9/8227 , H04N13/161 , H04N19/597 , H04N21/433 , H04N21/4332
摘要： A media container file (1) is generated by organizing media data (2; 3) defined by a media track (12) in the file (1). Sub-track information (72, 74) identifying media data portions (4, 5; 6, 7, 8) of the media data (2; 3) is organized for each sub-track of multiple sub-tracks defined in the media track (12). At least one of the sub-tracks is assigned selection information (62, 64) defining a selective processing of the media data portion (4, 5; 6, 7, 8) defined by the sub-track in relation to other media data organized in the media container file (1). The media data (2, 3) advantageously relate to layered media or media defining multiple camera views which are organized into sub-tracks (12). The selection information (62, 64) allows selection among tracks (12) and sub-tracks when setting up a media session and switching between tracks (12) and sub-tracks during such a media session.
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公开(公告)号：EP2417743A1
公开(公告)日：2012-02-15
申请号：EP09843131.5
申请日：2009-11-27
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.
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