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    Video encoding and decoding with chrominance sub-sampling
    5.
    发明公开
    Video encoding and decoding with chrominance sub-sampling 有权
    Videokodierung und Videodekodierung mit Chrominanzunterabtastung

    公开(公告)号：EP2717588A1

    公开(公告)日：2014-04-09

    申请号：EP13183406.1

    申请日：2013-09-06

    申请人： British Broadcasting Corporation

    发明人： Mrak, Marta ,  Gabriellini, Andrea

    IPC分类号： H04N19/00

    CPC分类号： H04N19/00775 ,  H04N19/117 ,  H04N19/132 ,  H04N19/136 ,  H04N19/186 ,  H04N19/59 ,  H04N19/61 ,  H04N19/85

    摘要： In video encoding, a video input received in 4:2:2 is resampled. Residuals are formed through the use of reference samples stored in the native 4:2:2, before transforming, quantising and entropy coding to form an encoded bitstream in the resampled format. The encoded bitstream contains a message indicating chrominance resampling and a selected chrominance resampling filter for the decoder to use. An encoder may have a first mode in which the 4:2:2 is up-sampled to 4:4:4 and a second mode in which the 4:2:2 is down-sampled to 4:2:0.

    摘要翻译： 在视频编码中，以4：2：2接收的视频输入被重新采样。 通过使用存储在原始4：2：2中的参考样本在变换，量化和熵编码之前形成残差，以形成以重采样格式的编码比特流。 编码比特流包含指示色度重采样的消息和用于解码器使用的所选择的色度重采样滤波器。 编码器可以具有其中4：2：2被上采样为4：4：4的第一模式，以及将4：2：2下采样为4：2：0的第二模式。

    Providing on-demand and broadcast television
    7.
    发明公开
    Providing on-demand and broadcast television 审中-公开
    提供点播和广播电视

    公开(公告)号：EP2369835A3

    公开(公告)日：2013-09-18

    申请号：EP11159681.3

    申请日：2011-03-24

    申请人： British Broadcasting Corporation

    发明人： Murison, Jane ,  Greenham, Andrew ,  Gammon, Ben ,  Still, Amelia

    IPC分类号： H04N5/445 ,  H04N7/173

    CPC分类号： H04N7/17318 ,  H04N5/44543 ,  H04N21/4325 ,  H04N21/4383 ,  H04N21/4622 ,  H04N21/47202 ,  H04N21/482

    摘要： A television receiver apparatus is described. The television receiver apparatus comprises an input interface arranged to receive commands from a user, a communication interface arranged to send and receive data over a one-to-one communication network, a broadcast receiver arranged to receive data sent over a broadcast network, a display interface arranged to connect to a display device, and a processor. The processor controls the display device to display an electronic programme guide comprising a schedule of programmes currently being broadcast, programmes to be broadcast after the current time, and programmes previously broadcast in a time period prior to the current time. The processor receives a request to view a selected programme displayed in the electronic programme guide, retrieves the selected programme from the communication network if the selected programme was previously broadcast in the time period, and controls the display device to display the selected programme.

    PROCESSING AUDIO-VIDEO DATA TO PRODUCE METADATA
    9.
    发明公开
    PROCESSING AUDIO-VIDEO DATA TO PRODUCE METADATA 审中-公开
    音频视频数据，用于生成元数据处理

    公开(公告)号：EP2577514A1

    公开(公告)日：2013-04-10

    申请号：EP11735899.4

    申请日：2011-05-27

    申请人： British Broadcasting Corporation

    发明人： BLAND, Denise ,  DAVIES, Sam ,  PINKS, Nicholas

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30781

    摘要： A system for processing audio-video data to produce metadata, has an input for receiving audio video data. A characteristic extraction unit is arranged to extract n multiple distinct characteristics from the received audio-video data. A data comparison unit is arranged to compare the n multiple distinct characteristics with data extracted from example audio-video data by comparing in n dimensional space to produce a value for each of f features of the audio-video data where f