System and method for an improved MBMS to PSS handover
    2.
    发明授权
    System and method for an improved MBMS to PSS handover 有权
    用于改进的MBMS到PSS切换的系统和方法

    公开(公告)号:US08233446B2

    公开(公告)日:2012-07-31

    申请号:US12363642

    申请日:2009-01-30

    CPC classification number: H04W36/02 H04W4/06 H04W72/005

    Abstract: A system and method for ensuring an improved transition at the application layer when distribution of media is changed from broadcast/multicast bearers to unicast bearers and vice versa. A mapping is defined between the timeline of a Packet-Switched Streaming Service (PSS) session and the Multimedia Broadcast Multicast Service (MBMS) session timeline. This mapping is used to enable the correct positioning of the stream in a PSS session by a PSS server after a handover has occurred. Broadcast multicast service center (BM-SC) signals can support various options for media playback after a MBMS-PSS handover in a PSS session description protocol (SDP) file or in the MBMS user service description (USD). In response, the client can signal its choice in the RTSP request that is sent when switching to the PSS session.

    Abstract translation: 一种用于确保当媒体分发从广播/多播承载变为单播承载时应用层改进的转换的系统和方法,反之亦然。 在分组交换流服务(PSS)会话的时间线和多媒体广播多播服务(MBMS)会话时间线之间定义映射。 该映射用于在切换发生之后由PSS服务器在PSS会话中正确定位流。 广播多播服务中心(BM-SC)信号可以在PSS会话描述协议(SDP)文件或MBMS用户服务描述(USD)中的MBMS-PSS切换之后支持用于媒体回放的各种选项。 作为响应,客户端可以在切换到PSS会话时发送的RTSP请求中指示其选择。

    Forming of error correction data
    4.
    发明申请
    Forming of error correction data 有权
    形成纠错数据

    公开(公告)号:US20060075321A1

    公开(公告)日:2006-04-06

    申请号:US11246920

    申请日:2005-10-06

    Abstract: The invention relates to the generation of error correction data for available data packets 53 and to the reconstruction of missing data packets based on available data packets and available error correction data. In order to enable an efficient error correction, the data packets 53 are distributed at an encoding end to at least one block of data symbols 54, each data symbol 54 being of equal size (steps 403,404). Then all data symbols 54 of a respective block are used in an encoding operation for forming a respective one of at least one error correction symbol 56 for this block (step 405). At a decoding end, received data packets 83 are distributed again to a block of data symbols 84 and missing data packets are reconstructed based on these data symbols 84 and on error correction symbols 86 associated to the block.

    Abstract translation: 本发明涉及根据可用的数据分组和可用的纠错数据生成可用数据分组53的纠错数据和丢失数据分组的重构。 为了实现有效的纠错,数据分组53在编码端分配给至少一个数据符号块54,每个数据符号54具有相同的大小(步骤403,404)。 然后,在用于形成该块的至少一个误差校正符号56中的相应一个的编码操作中使用相应块的所有数据符号54(步骤405)。 在解码端,接收的数据分组83再次分配到数据符号块84,并且基于这些数据符号84和与该块相关联的纠错符号86来重构丢失的数据分组。

    METHODS AND APPARATUSES FOR MOBILE VISUAL SEARCH
    5.
    发明申请
    METHODS AND APPARATUSES FOR MOBILE VISUAL SEARCH 审中-公开
    手机视觉搜索的方法和设备

    公开(公告)号:US20130114900A1

    公开(公告)日:2013-05-09

    申请号:US13290658

    申请日:2011-11-07

    Abstract: Methods, apparatuses, and computer program products are herein provided for providing a REVV system that is configured to provide an MVS that is operable on a mobile terminal. One example method may include causing a plurality of vector word residuals to be aggregated for at least one visual word using local feature descriptors extracted from an image. The method may further include causing the dimensionality of the aggregated at least one vector word residual for each visual word to be reduced by using a classification aware linear discriminant analysis. The method may further include computing, using a processor, a weighted correlation for at least one compact image signature that is binarized from the aggregated at least one vector word residual when compared to a list of candidates. The method may further include determining a ranked list of candidates based on the computed weighted correlation.

    Abstract translation: 这里提供了用于提供被配置为提供在移动终端上可操作的MVS的REVV系统的方法,装置和计算机程序产品。 一个示例性方法可以包括:使用从图像提取的局部特征描述符,使多个矢量字残差被聚合用于至少一个视觉词。 该方法可以进一步包括通过使用分类感知线性判别分析来使每个视觉词的聚合的至少一个矢量字残差的维数降低。 所述方法可以进一步包括当与候选列表进行比较时,使用处理器计算对于至少一个紧凑图像签名的加权相关性,所述至少一个紧凑图像签名被从所述聚合的至少一个向量字残差中二值化。 该方法还可以包括基于所计算的加权相关性来确定候选排序列表。

    Extensions to rich media container format for use by mobile broadcast/multicast streaming servers
    7.
    发明授权
    Extensions to rich media container format for use by mobile broadcast/multicast streaming servers 有权
    扩展到富媒体容器格式,供移动广播/多播流服务器使用

    公开(公告)号:US07917644B2

    公开(公告)日:2011-03-29

    申请号:US11622434

    申请日:2007-01-11

    Abstract: An extension to the ISO Base Media File Format to support ALC as a broadcast protocol. The present invention also provides for the extension of the ESG to include metadata specific to the transport of SVG over mobile broadcast/multicast networks. A “BMFDP hint track” is introduced in the container file format, with the required file metadata being in these hint tracks. The present invention can be used in applications such as the preview of long cartoon animations, interactive Mobile TV services, live enterprise data feeds, live chat services, and karaoke programs.

    Abstract translation: ISO基础媒体文件格式的扩展,支持ALC作为广播协议。 本发明还提供了ESG的扩展,以包括特定于通过移动广播/组播网络传输SVG的元数据。 以“容器文件”格式引入“BMFDP提示轨”,所需的文件元数据位于这些提示轨道中。 本发明可以用于预览长漫画动画,交互式移动电视服务,实时企业数据馈送,实时聊天服务和卡拉OK节目等应用。

    Method and device for assembling forward error correction frames in multimedia streaming
    9.
    发明申请
    Method and device for assembling forward error correction frames in multimedia streaming 有权
    用于组合多媒体流中的前向纠错帧的方法和装置

    公开(公告)号:US20080049789A1

    公开(公告)日:2008-02-28

    申请号:US11508726

    申请日:2006-08-22

    Abstract: In a RTP stream having a plurality of FEC frames containing source blocks of media packets, random access points are inserted in front of the source blocks so as to allow a media decoder to decode the media packets as soon as FEC decoding is finished. In particular, the media packets contain forward error correction (FEC) source blocks for a multimedia broadcast/multicast-based streaming service content. As the multimedia broadcast/multicast streaming service includes dynamic interactive multimedia scene content where the source RTP packets of different media along with the FEC RTP packets are transmitted as separate RTP streams, the inclusion of the random access point facilitates immediate rendering of the dynamic interactive multimedia scene content after FEC decoding, thus reducing the tune-in latency.

    Abstract translation: 在具有包含媒体分组的源块的多个FEC帧的RTP流中,随机接入点插入在源块前面,以便在FEC解码完成时允许媒体解码器解码媒体分组。 特别地,媒体分组包含用于基于多媒体广播/基于组播的流服务内容的前向纠错(FEC)源块。 由于多媒体广播/多播流服务包括动态交互式多媒体场景内容,其中不同媒体的源RTP分组连同FEC RTP分组作为单独的RTP流传输,所以包含随机接入点有助于立即呈现动态交互多媒体 FEC解码后的场景内容,从而降低了调入延迟。

    System and method of XML based content fragmentation for rich media streaming
    10.
    发明申请
    System and method of XML based content fragmentation for rich media streaming 审中-公开
    用于富媒体流的基于XML的内容碎片的系统和方法

    公开(公告)号:US20080040498A1

    公开(公告)日:2008-02-14

    申请号:US11503031

    申请日:2006-08-10

    CPC classification number: H04L65/607 H04L65/608 H04N21/631 H04N21/8543

    Abstract: A system and method for partitioning XML-based content into fragments, where transport packets are generated for encapsulating the fragments and streaming the encapsulated fragments to a receiver, such as a mobile device. Fragmentation of the XML-based content can be performed either with or without regard for any underlying XML syntax or structure. In either case, certain relevant fragmentation information is encapsulated with the fragmented XML-based content in the transport packets that allow for various reconstruction, error concealment, and retransmission schemes for presenting the streamed XML-based content on/to the receiver.

    Abstract translation: 一种用于将基于XML的内容分割成片段的系统和方法,其中生成用于封装片段的传输分组并将封装的片段流式传输到诸如移动设备的接收器。 可以使用或不考虑任何底层XML语法或结构来执行基于XML的内容的分段。 在这两种情况下,某些相关的分段信息被封装在传输分组中的基于片段的基于XML的内容,这些内容允许各种重建,错误隐藏和重传方案,用于在接收器上呈现流式的基于XML的内容。

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