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    • 2. 发明申请
    • METHOD AND APPARATUS FOR CONTENT DISTRIBUTION FOR MULTISCREEN VIEWING
    • 用于多视图内容分发的方法和装置
    • WO2014194487A1
    • 2014-12-11
    • PCT/CN2013/076768
    • 2013-06-05
    • THOMSON LICENSINGXU, YanDU, LinZHOU, Wei
    • XU, YanDU, LinZHOU, Wei
    • H04N21/63H04L12/911
    • H04N21/2385H04N21/222H04N21/2355H04N21/25883H04N21/4126H04N21/43615H04N21/4383H04N21/4402H04N21/44218H04N21/64738
    • A method transmitting a video program having an initial video quality and information related to the video program to multiple devices having an initial information quality is disclosed. The method comprises receiving a request for the video program from one of the first and second devices, both registered in an account; allocating first and second amounts of bandwidth, respectively, to one of the two devices and the other of the two devices according to first available bandwidth; transmitting to the one device the video program having a first quality satisfying the first allocated amount of bandwidth, but not the information related to the video program; transmitting to the other device the information related to the video program having a second quality satisfying the second allocated amount of bandwidth, but not the video program; and responsive to first view change information of a user, adjusting the first and second allocated amounts to maximize quality of content received by the device having a view of the user according to the first view change information.
    • 公开了一种将具有初始视频质量的视频节目和与视频节目有关的信息发送给具有初始信息质量的多个装置的方法。 该方法包括从帐户中登记的第一和第二装置之一接收对视频节目的请求; 根据第一可用带宽分别将第一和第二数量的带宽分配给两个设备之一和两个设备中的另一个; 向所述一个设备发送具有满足所述第一分配带宽量的第一质量的视频节目,而不是与所述视频节目相关的信息; 向所述另一设备发送与具有满足所述第二分配带宽量的第二质量而不是所述视频节目的所述视频节目相关的信息; 并且响应于用户的第一视图改变信息,调整第一和第二分配量以使具有根据第一视图变化信息的用户视图的设备接收到的内容的质量最大化。
    • 10. 发明申请
    • FEC FRAME HEADER DESIGN FOR CABLE TELEVISION SIGNALS
    • 用于电缆电视信号的FEC帧头设计
    • WO2010056357A2
    • 2010-05-20
    • PCT/US2009/006130
    • 2009-11-16
    • THOMSON LICENSINGGAO, WenCHEN, Hou-ShinKABUTZ, MartenZHOU, Wei
    • GAO, WenCHEN, Hou-ShinKABUTZ, MartenZHOU, Wei
    • H04L1/00
    • H04L1/0057H04L1/0003H04L1/0072
    • Efficient and reliable FEC frame header improvements suitable for headers for data packets in a digital cable television transmission system are provided. In one embodiment, the DVB-C2 Standard, Adaptive Coding and Modulation (ACM) or Variable Coding and Modulation (VCM) is applied to each FEC block to provide as much flexibility as possible. As a result, a frame header is attached in front of each FEC frame to inform the coding rate, modulation type and physical layer pipe identifier. Besides the signaling of physical layer related information, the FEC frame header has to provide a structure so that it can be easily and reliably detected in the receiver. A frame header for Forward Error Correction (FEC) encoded frames is designed for use in the DVB-C2 Standard with an extra bit to convey additional information. The FEC frame block can also include the FEC header for the subsequent FEC data block to increase robustness. The power level of the FEC header can also be increased relative to the data portion. Different modulation methods can be used for the FEC frame header depending on the modulation method used for the FEC frame data portion. These techniques increase the flexibility and robustness of FEC header detection.
    • 提供了适用于数字有线电视传输系统中的数据分组头部的高效可靠的FEC帧头改进。 在一个实施例中,将DVB-C2标准,自适应编码和调制(ACM)或可变编码和调制(VCM)应用于每个FEC块以提供尽可能多的灵活性。 结果,在每个FEC帧的前面附加帧头,以通知编码率,调制类型和物理层管道标识符。 除了物理层相关信息的信令之外,FEC帧报头必须提供一种可以在接收机中容易且可靠地检测的结构。 用于前向纠错(FEC)编码帧的帧头被设计用于具有额外位的DVB-C2标准以传送附加信息。 FEC帧块还可以包括用于后续FEC数据块的FEC报头以增加鲁棒性。 也可以相对于数据部分增加FEC报头的功率级。 根据用于FEC帧数据部分的调制方法,不同的调制方法可用于FEC帧报头。 这些技术增加了FEC报头检测的灵活性和鲁棒性。