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21. 发明申请

US20210266613A1 GENERATING COMPOSITE VIDEO STREAM FOR DISPLAY IN VR 有权
公开(公告)号：US20210266613A1
公开(公告)日：2021-08-26
申请号：US17262598
申请日：2019-07-29
申请人： Koninklijke KPN N.V. , Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
发明人： Alexandre da Silva Pratas Gabriel , Mattijs Oskar Van Deventer , Hans Maarten Stokking
IPC分类号： H04N21/234 , H04N21/854 , H04N21/845 , H04N13/161 , H04N13/178 , H04N21/236
摘要： A processor system and computer-implemented method may be provided for generating a composite video stream which may combine a background video and a foreground video stream into one stream. For that purpose, a spatially segmented encoding of the background video may be obtained, for example in the form of a tiled stream. The foreground video stream may be received, for example, from a(nother) client device. The foreground video stream may be a real-time stream, e.g., when being used in real-time communication. The image data of the foreground video stream may be inserted into the background video by decoding select segments of the background video, inserting the foreground image data into the decoded background image data of these segments, and by encoding the resulting composite image data to obtain composite segments which, together with the non-processed segments of the background video, form a spatially segmented encoding of a composite video.

22. 发明授权

US11005906B2 Updating part of a manifest file on the basis of patches 有权
公开(公告)号：US11005906B2
公开(公告)日：2021-05-11
申请号：US16060356
申请日：2016-12-09
申请人： Koninklijke KPN N.V.
发明人： Emmanuel Thomas , Lucia D'Acunto , Ray Van Brandenburg , Mattijs Oskar Van Deventer
IPC分类号： H04L29/06
摘要： A method is described for providing one or more patches to a client device. The method may comprise determining manifest file version information of a manifest file that is used by the client device; detecting an indication that one or more patches have been missed, a patch comprising information for updating at least part of information in the manifest file; requesting one or more missed patches on the basis of the manifest file version information (and the version information of the manifest file that the client would obtain after having applied the last missed patch—if available); and, receiving the one or more missed patches for updating the information in the manifest file.

23. 发明授权

US10439910B2 Low-latency streaming 有权
公开(公告)号：US10439910B2
公开(公告)日：2019-10-08
申请号：US14653849
申请日：2013-12-30
申请人： Koninklijke KPN N.V.
发明人： Arian Koster , Dolf Schinkel , Ray Van Brandenburg , Emmanuel Thomas , Mattijs Oskar Van Deventer
IPC分类号： H04L29/06 , G06F17/30 , H04L12/26 , H04L29/08 , G06F16/951
摘要： Method and systems for enabling low-latency streaming of segments over at least one network to a client are described wherein said client is configured to request and receive segments from at least one server on the basis of a manifest file. Said method comprises: collecting quality of service information experienced by said client in at least a part of said network and storing said quality of service information in a quality database in said network; sending at least part of said quality of service information to said content processing device; determining on the basis of said at least part of said quality of service information one or more configuration parameters for a buffer, preferably a play-out buffer; and/or, for a segment request function in said content processing device; and, configuring said buffer and/or, said segment request function in accordance with said configuration parameters.

24. 发明授权

US10397666B2 Determining a region of interest on the basis of a HEVC-tiled video stream 有权
公开(公告)号：US10397666B2
公开(公告)日：2019-08-27
申请号：US15318631
申请日：2015-06-26
申请人： Koninklijke KPN N.V.
发明人： Emmanuel Thomas , Ray Van Brandenburg , Mattijs Oskar Van Deventer
IPC分类号： H04N21/858 , H04N21/2343 , H04N21/4728 , H04N21/6587 , H04N21/845 , H04N21/854 , H04N19/119 , H04N19/174 , H04N19/167 , H04N19/85 , H04N21/4402
摘要： A method is described for determining a region-of-interest (ROI) for a client device on the basis of at least one HEVC-tiled (panorama) video stream wherein the method comprises: receiving a ROI video stream for rendering a first ROI defining a first sub-region within the full image region of said HEVC-tiled video stream, the positions of HEVC tiles in said HEVC-tiled panorama video being defined by tile position information; providing ROI position information associated with at least one video frame of said ROI video stream, said ROI position information comprising at least first position of said first ROI; identifying one or more HEVC tiles of said HEVC-tiled video stream on the basis of said ROI position information and said tile position information, preferably one or more HEVC tiles that overlap with said first ROI; and, requesting video data associated with said one or more identified HEVC tiles for rendering a second ROI defining a second sub-region within the full image region of said HEVC-tiled video stream.

25. 发明申请

US20190208234A1 Forming One Or More Tile Streams On The Basis Of One Or More Video Streams 审中-公开
公开(公告)号：US20190208234A1
公开(公告)日：2019-07-04
申请号：US15752559
申请日：2016-08-19
申请人： Koninklijke KPN N.V.
发明人： Ray Van Brandenburg , Emmanuel Thomas , Mattijs Oskar Van Deventer
IPC分类号： H04N21/235 , H04N21/858 , H04N21/845 , H04N21/437 , H04N21/2343 , H04N21/262 , H04N21/231
摘要： Methods and systems are described for forming one or more tile streams comprising: providing media data of at least one composite video stream to the input of at least one encoder, the media data of said composite video stream representing video frames comprising an image region having one or more subregions, each of said one or more subregions comprising visual content of one of said one or more video streams; providing encoder information to said encoder for configuring said encoder to generate encoded media data representing tiled video frames, a tile in said tiled video frames matching at least one of said one or more subregions; encoding media data of said composite video stream, wherein media data associated with a subregion of a video frame are encoded into independently encoded media data that have no spatial decoding dependency on media data of other subregions in said video frame, said independently encoded media data forming a tile of a tiled video frame, preferably said tile being arranged in said image region on the basis of a tile grid; and, storing said encoded media data as one or more tile streams on a storage medium, preferably on a storage medium of one or more network nodes, a tile stream comprising media data of at least one tile and tile position information for signaling a decoder to decode the media data of said tile stream into tiled video frames comprising a tile at a position as indicated by the tile position information.

26. 发明申请

US20190174150A1 Spatially Tiled Omnidirectional Video Streaming 审中-公开
公开(公告)号：US20190174150A1
公开(公告)日：2019-06-06
申请号：US16302500
申请日：2017-05-24
申请人： Koninklijke KPN N.V.
发明人： Lucia D'Acunto , Emmanuel Thomas , Mattijs Oskar Van Deventer , Ray Van Brandenburg , Arjen Veenhuizen
IPC分类号： H04N21/218 , H04N21/6587 , H04N21/845 , H04L29/06 , H04N19/167
摘要： A method is described for processing an omnidirectional video by a client device, said omnidirectional video being associated with a 3D coordinate system for determining a spatial position of video data of said omnidirectional video on a curved surface, preferably a sphere, said method comprising: receiving a manifest file, the manifest file comprising a plurality of tile stream identifiers for identifying a plurality of tile streams, the tile streams comprising video frames having image views, whereby the image views of video frames of different tile streams cover different regions of a 2D projection of the omnidirectional video, a region defining a tile; selecting on the basis of spatial relation information in the manifest file and on the basis of a viewpoint of a user of the client device a first tile streams associated with a first resolution and a first tile position and a second tile stream associated with a second resolution and a second tile position, the second resolution being lower than the first resolution, wherein the spatial relation information defines for each tile a tile position and wherein the viewpoint defines a viewing direction of the user, tile position and the viewpoint being defined on the basis of coordinates of the 3D coordinate system.

27. 发明授权

US09723047B2 Network-initiated content streaming control 有权
公开(公告)号：US09723047B2
公开(公告)日：2017-08-01
申请号：US14368763
申请日：2012-12-27
申请人： Koninklijke KPN N.V. , Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNO
发明人： Ray Van Brandenburg , Omar Aziz Niamut , Mattijs Oskar Van Deventer
IPC分类号： G06F15/16 , H04L29/06 , H04L29/08
CPC分类号： H04L65/608 , H04L65/1069 , H04L65/4084 , H04L65/4092 , H04L67/025 , H04L67/42
摘要： Methods and systems are described for enabling network-initiated control of streaming of segmented content from a content delivery node to at least one client, said client being configured to access at least part of said segmented content on the basis of a manifest file, wherein a method may comprise: receiving a first manifest file identifying one or more segments and location information for locating one or more content delivery nodes configured to transmit said one or more segments to said at least one client; in response to said reception of said first manifest file, providing channel set-up information; and, establishing at least one streaming control channel between said at least one client and a control channel server function associated with said content delivery node on the basis of said control channel set-up information, said at least one client being configured for receiving at least one manifest file update message via said streaming control channel.

28. 发明申请

US20160149978A1 STREAMING OF SEGMENTED CONTENT 审中-公开
标题翻译：分析内容的流动
公开(公告)号：US20160149978A1
公开(公告)日：2016-05-26
申请号：US14899534
申请日：2014-07-02
申请人： KONINKLIJKE KPN N.V. , NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ON-DERZOEK TNO
发明人： Bastiaan Wissingh , Menno Bangma , Ray Van Brandenburg , Mattijs Oskar Van Deventer
IPC分类号： H04L29/06
CPC分类号： H04L65/4069 , H04L65/601 , H04N21/26258 , H04N21/44209 , H04N21/44222 , H04N21/458 , H04N21/4667 , H04N21/8456
摘要： Methods and systems for enabling streaming of segmented content from a content delivery network to an adaptive streaming client on the basis of a manifest file are described wherein the said manifest file may comprise one or more segment identifiers. The method may comprise: selecting at least one segment identifier from said manifest file, said identifier identifying a segment that has not been requested by said client; and, sending pre-announce information to said content delivery network for announcing in advance that said segment may be requested by said client, said pre-announce information comprising said at least one segment identifier, said pre-announce information being further arranged for triggering said content delivery network to ensure availability of said segment upon receiving said request.
摘要翻译：描述了用于基于清单文件使分段内容从内容递送网络流向自适应流客户端的方法和系统，其中所述清单文件可以包括一个或多个分段标识符。该方法可以包括：从所述清单文件中选择至少一个段标识符，所述标识符标识尚未被所述客户端请求的段; 并且向所述内容传送网络发送预先宣告信息，以预先通知所述客户端可以请求所述片段，所述预宣传信息包括所述至少一个片段标识符，所述预宣告信息还被布置为用于触发所述内容传送网络，以确保在接收到所述请求时所述段的可用性。

29. 发明申请

US20150356281A1 Secure Watermarking of Content 审中-公开
标题翻译：内容的安全水印
公开(公告)号：US20150356281A1
公开(公告)日：2015-12-10
申请号：US14655455
申请日：2013-12-30
申请人： NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEK TNO , KONINKLIJKE KPN N.V.
发明人： Mattijs Oskar Van Deventer , Peter Veugen
IPC分类号： G06F21/16 , H04L9/00
CPC分类号： G06F21/16 , G06F2221/0737 , H04L9/008 , H04L2209/608
摘要： Methods and systems for secure watermarking of at least part of a content item X are described, wherein the method comprises: providing a distorted content item X+y, comprising one or more distorted data units wherein the payload of a distorted data unit comprises a distortion signal y which distorts the rendering of the payload in said distorted data unit; providing a compensating watermark payload w-y comprising one or more compensating watermark signals S−y; using homomorphic encryption for en-crypting at least part of said distorted content item X−y and said compensating watermark payload into an encrypted distorted content item E(X+y) and an encrypted compensating watermark payload E(w-y) on the basis of one or more encryption keys; and, combining said encrypted distorted content item with said encrypted compensating watermark payload on the basis of one or more homomorphic computations, wherein said one or more computations modify a distortion signal y in the payload of a distorted data unit into a non-perceptible watermark signal S.
摘要翻译：描述了用于至少部分内容项目X的安全水印的方法和系统，其中所述方法包括：提供包含一个或多个失真数据单元的失真内容项目X + y，其中失真数据单元的有效负载包括失真信号y，其扭曲所述失真数据单元中的有效载荷的渲染; 提供包括一个或多个补偿水印信号S-y的补偿水印有效载荷w-y; 使用同态加密来将至少部分所述失真内容项目X-y和所述补偿水印有效载荷嵌入加密的失真内容项目E（X + y）和加密的补偿水印有效载荷E（wy）中，基于一个或更多的加密密钥; 以及基于一个或多个同态计算将所述加密的失真内容项与所述加密的补偿水印有效负载组合，其中所述一个或多个计算将失真数据单元的有效载荷中的失真信号y修改为不可感知的水印信号 S.

30. 发明申请

US20150271536A1 Generating a Stream Comprising Synchronized Content 有权
标题翻译：生成包含同步内容的流
公开(公告)号：US20150271536A1
公开(公告)日：2015-09-24
申请号：US14730193
申请日：2015-06-03
申请人： Koninklijke KPN N.V.
发明人： Hans Maarten Stokking , Omar Aziz Niamut , Mattijs Oskar Van Deventer , Fabian Arthur Walraven , Victor Bastiaan Klos , John Gerard Beerends
IPC分类号： H04N21/2365 , H04N21/242 , H04N21/2665 , H04N21/643 , H04N21/462 , H04N21/2368 , H04N21/61
CPC分类号： H04N21/2365 , G10H1/0058 , G10H1/361 , G10H1/365 , G10H1/368 , G10H2220/011 , G10H2220/145 , G10H2240/175 , G10H2240/295 , G10H2240/305 , G10H2240/325 , G10H2250/041 , G11B27/034 , G11B27/10 , H04N7/15 , H04N7/152 , H04N7/17318 , H04N19/40 , H04N19/46 , H04N21/2368 , H04N21/242 , H04N21/2665 , H04N21/42203 , H04N21/4223 , H04N21/4341 , H04N21/4347 , H04N21/4622 , H04N21/478 , H04N21/6125 , H04N21/6175 , H04N21/64322 , H04N21/8547
摘要： A method of generating a stream comprising synchronized interactive content is described. The method comprises the steps of: transmitting a first stream from a studio to a terminal or a terminal system of a first user and to a buffer; transmitting in response to the first stream a second stream to a mixer connected to the buffer, the second stream comprising content generated in reaction to the content of the first stream; providing the mixer with a temporal relation between the packets in the first and second stream; generating a first output stream comprising a substantially synchronized content by mixing packets in second stream with packets of the buffered first stream on the basis of the temporal relation.
摘要翻译：描述了生成包括同步交互内容的流的方法。该方法包括以下步骤：将第一流从演播室发送到第一用户的终端或终端系统，并传送到缓冲器; 响应于所述第一流将第二流传输到连接到所述缓冲器的混合器，所述第二流包括响应于所述第一流的内容而产生的内容; 向所述混合器提供所述第一和第二流中的分组之间的时间关系; 基于时间关系，通过将第二流中的分组与缓冲的第一流的分组混合来生成包括基本上同步的内容的第一输出流。

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