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    ADAPTIVE STREAMING OF NONLINEAR MEDIA CONTROLLED BY THE CLIENT
    5.
    发明公开
    ADAPTIVE STREAMING OF NONLINEAR MEDIA CONTROLLED BY THE CLIENT 审中-公开

    公开(公告)号：EP3468215A1

    公开(公告)日：2019-04-10

    申请号：EP18198092.1

    申请日：2018-10-02

    申请人： Koninklijke KPN N.V. ,  Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

    发明人： da Silva Pratas Gabriel, Alexandre ,  THOMAS, Emmanuel

    IPC分类号： H04N21/4728 ,  H04N21/6587

    摘要： A method for adaptive streaming of nonlinear video is described wherein the method comprises receiving a manifest file comprising metadata defining a playback period defining video data of a predetermined playback duration, a playback period including at least one adaptation set defining a plurality of representations, each representation defining a set of segment identifiers, each segment identifier identifying a segment comprising a sequence of video frames; the metadata further comprising spatial playback information including at least a first region descriptor associated with a first adaptation set of a first playback period, the first region descriptor defining a destination identifier and a first region in video frames of the first adaptation set, the destination identifier signaling the client apparatus that the first region is linked to a second adaptation set; the client apparatus using the metadata to playback video data of the first adaptation set by requesting one or more network nodes to transmit segments of the first adaptation set; and, receiving or determining, during playback of requested segments, information associated with at least a second region in the video frames of the first adaptation set, the second region defining a region of interest (ROI) of a user of the client apparatus; the client apparatus selecting the second adaptation set for playback after the end of the playback of the first adaptation set on the basis of the first and second region, the selecting being based on a distance or an overlap between the first and second region.

    MANAGING CONCURRENT STREAMING OF MEDIA STREAMS
    6.
    发明公开
    MANAGING CONCURRENT STREAMING OF MEDIA STREAMS 审中-公开
    管理媒体流的同时流式传输

    公开(公告)号：EP3207682A1

    公开(公告)日：2017-08-23

    申请号：EP15780834.6

    申请日：2015-10-13

    申请人： Koninklijke KPN N.V. ,  Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

    发明人： THOMAS, Emmanuel ,  PRINS, Martin ,  NIAMUT, Omar Aziz ,  STOKKING, Hans Maarten

    IPC分类号： H04L29/06

    CPC分类号： H04L65/608 ,  H04L65/1083 ,  H04L65/80

    摘要： A system and method are provided for managing a concurrent streaming of a first media stream (031) and a second media stream (032). The media streams (031, 032) represent different recordings of an event. The concurrent streaming of the media streams (031, 032) is enabled by a resource having a resource limitation (080). To address this resource limitation, when it is determined that the resource limitation is exceeded by the concurrent streaming of the first media stream (031) streaming to a first streaming client (041) and the second media stream (032) streaming to a second streaming client (042), the first media stream (031) is selected for substituting the second media stream (032) in the streaming to the second streaming client (042). As a result of the substitution, the first and the second streaming client (041, 042) stream the same media stream rather than different media streams. This may have as advantage that the allocation of the resource is reduced, since the streaming of a same media stream to different streaming clients (041, 042) typically represents a lower resource allocation than the streaming of different media streams to different streaming clients.

    摘要翻译： 提供了一种用于管理第一媒体流（031）和第二媒体流（032）的并发流式传输的系统和方法。 媒体流（031,032）表示事件的不同记录。 媒体流（031,032）的并发流由具有资源限制（080）的资源启用。 为了解决该资源限制，当确定资源限制被第一媒体流（031）流式传输到第一流式传输客户端（041）和第二媒体流（032）流式传输到第二流式传输 客户端（042）中，选择第一媒体流（031）以用于将流中的第二媒体流（032）替换为第二流媒体客户端（042）。 作为替换的结果，第一和第二流式传输客户端（041,042）流式传输相同的媒体流而不是不同的媒体流。 这可以具有减少资源分配的优点，因为相同媒体流到不同流媒体客户端（041,042）的流媒体典型地表示比不同媒体流到不同流媒体客户端的流媒体更低的资源分配。

    NOISE SUPPRESSION SYSTEM AND METHOD
    7.
    发明公开
    NOISE SUPPRESSION SYSTEM AND METHOD 审中-公开
    噪声抑制系统和方法

    公开(公告)号：EP3175456A1

    公开(公告)日：2017-06-07

    申请号：EP15747424.8

    申请日：2015-07-30

    申请人： Koninklijke KPN N.V. ,  Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

    发明人： STOKKING, Hans Maarten ,  NIAMUT, Omar Aziz ,  THOMAS, Emmanuel

    IPC分类号： G10L21/0208

    CPC分类号： G10L21/0208 ,  G10L21/0216 ,  G10L21/0224 ,  G10L21/0308 ,  G10L2021/02163 ,  H04H2201/50

    摘要： A play-out device is provided for playing out an audio signal via a speaker to provide a sound signal, and a recording device for recording the sound signal to obtain a recorded signal comprising a recording of at least the sound signal. The play-out device is configured for generating noise suppression data comprising the audio signal, or a reference thereto, and timing information for enabling the audio signal to be correlated in time with the recorded signal. A noise suppression subsystem is provided with the recorded signal and the noise suppression data. The noise suppression subsystem comprises a timing manager for synchronizing the audio signal with the recorded signal based on the timing information, and a noise suppressor for processing the recorded signal based on said synchronized audio signal to obtain a processed signal in which the recording of the sound signal is suppressed. The noise suppression subsystem is thus enabled to perform noise suppression, even when not comprised in the play-out device but rather in another device such as the recording device.

    摘要翻译： 提供播放装置，用于通过扬声器播放音频信号以提供声音信号，以及记录装置，用于记录声音信号以获得包括至少记录声音信号的记录信号。 播出设备被配置用于生成包括音频信号或其对于其的参考的噪声抑制数据以及用于使音频信号能够与所记录的信号在时间上相关的定时信息。 噪声抑制子系统提供有记录信号和噪声抑制数据。 噪声抑制子系统包括：定时管理器，用于基于定时信息使音频信号与记录信号同步;以及噪声抑制器，用于基于所述同步音频信号处理记录信号，以获得处理后的信号，其中声音的记录 信号被抑制。 噪声抑制子系统因此能够执行噪声抑制，即使当不包括在播出装置中而是包含在诸如记录装置的另一装置中时。

    HEVC-TILED VIDEO STREAMING
    8.
    发明公开
    HEVC-TILED VIDEO STREAMING 审中-公开
    HEVC-TILED视频流

    公开(公告)号：EP3162075A1

    公开(公告)日：2017-05-03

    申请号：EP15734102.5

    申请日：2015-06-26

    申请人： Koninklijke KPN N.V. ,  Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

    发明人： THOMAS, Emmanuel ,  VAN BRANDENBURG, Ray

    IPC分类号： H04N21/218 ,  H04N21/2343 ,  H04N21/4728 ,  H04N21/6587 ,  H04N21/845 ,  H04N21/858

    摘要： A method is described of streaming HEVC-tiled video data to a client device comprising: providing said client device with a spatial manifest file comprising one or more spatial segments identifiers for locating one or more delivery nodes configured for delivering video data associated with a spatial segment identified by at least one of said one or more spatial segments identifiers, preferably (part of) one or more URLs, to said client device, a spatial segment being associated with HEVC-tiled video data comprising a subset of HEVC tiles of a HEVC-tiled (panorama) video stream; and, selecting a spatial segment identifier in said spatial manifest file for requesting a delivery node to deliver at least part of the video data of a spatial segment as a HEVC-tiled video stream to the client device.

    摘要翻译： 描述了将HEVC平铺视频数据流式传输到客户端设备的方法，包括：向所述客户端设备提供空间清单文件，空间清单文件包括一个或多个空间段标识符，用于定位被配置用于传递与空间段相关联的视频数据的一个或多个传递节点 由所述一个或多个空间片段标识符中的至少一个标识符，优选地（一个）一个或多个URL到所述客户端设备来标识，空间片段与HEVC平铺视频数据相关联，所述HEVC平铺视频数据包括HEVC平铺视频数据的HEVC瓦片的子集， 平铺（全景）视频流; 以及在所述空间清单文件中选择空间片段标识符以请求递送节点将空间片段的视频数据的至少一部分作为HEVC平铺视频流递送到客户端设备。

    DETERMINING A REGION OF INTEREST ON THE BASIS OF A HEVC-TILED VIDEO STREAM
    9.
    发明公开
    DETERMINING A REGION OF INTEREST ON THE BASIS OF A HEVC-TILED VIDEO STREAM 审中-公开
    根据HEVC-TILED视频流确定兴趣区域

    公开(公告)号：EP3162074A1

    公开(公告)日：2017-05-03

    申请号：EP15731088.9

    申请日：2015-06-26

    申请人： Koninklijke KPN N.V. ,  Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO

    发明人： THOMAS, Emmanuel ,  VAN BRANDENBURG, Ray ,  VAN DEVENTER, Mattijs Oskar

    IPC分类号： H04N21/218 ,  H04N21/2343 ,  H04N21/4728 ,  H04N21/6587 ,  H04N21/4545 ,  H04N21/845 ,  H04N21/858 ,  H04N13/00 ,  H04N13/04

    CPC分类号： H04N21/8586 ,  H04N19/119 ,  H04N19/167 ,  H04N19/174 ,  H04N19/85 ,  H04N21/2343 ,  H04N21/234327 ,  H04N21/234363 ,  H04N21/440263 ,  H04N21/4728 ,  H04N21/6587 ,  H04N21/8455 ,  H04N21/85406

    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.

    摘要翻译： 描述了一种用于基于至少一个HEVC平铺（全景）视频流来确定客户端设备的感兴趣区域（ROI）的方法，其中该方法包括：接收ROI视频流以用于呈现第一ROI定义 所述HEVC平铺视频流的全图像区域内的第一子区域，所述HEVC平铺全景视频中的HEVC瓦片的位置由瓦片位置信息定义; 提供与所述ROI视频流的至少一个视频帧相关联的ROI位置信息，所述ROI位置信息至少包括所述第一ROI的第一位置; 基于所述ROI位置信息和所述图块位置信息，优选地与所述第一ROI重叠的一个或多个HEVC图块，识别所述HEVC划片视频流的一个或多个HEVC图块; 以及请求与所述一个或多个识别的HEVC瓦片相关联的视频数据，用于渲染限定所述HEVC平铺视频流的全图像区域内的第二子区域的第二ROI。