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    GRACEFUL DEGRADATION-FORWARD ERROR CORRECTION METHOD AND APPARATUS FOR PERFORMING SAME
    3.
    发明申请
    GRACEFUL DEGRADATION-FORWARD ERROR CORRECTION METHOD AND APPARATUS FOR PERFORMING SAME 审中-公开
    严格的降级前向错误校正方法及其执行装置

    公开(公告)号：US20150006991A1

    公开(公告)日：2015-01-01

    申请号：US14374690

    申请日：2013-01-24

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Seok Ho Won ,  Sun Hyoung Kwon ,  Ho Kyom Kim ,  Jong Soo Lim ,  O Hyung Kwon

    IPC: H03M13/13 ,  G06F11/10 ,  H03M13/29

    CPC classification number: G06F11/10 ,  H03M13/3761 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/007 ,  H04N21/2383

    Abstract: Disclosed are a graceful degradation-forward error correction method and an apparatus for performing same. A graceful degradation-forward error correction method determines an encoding unit data group constituted by a predetermined number of time intervals for a data stream input in a time-sequential manner, determines a reference data group to be used in generating a parity frame in each time interval of the encoding unit data group, generates a parity frame using the determined at least one reference data group, and assigns the generated parity frame to at least one time interval from among a plurality of time intervals including time intervals constituting the encoding unit data group based on a predetermined rule. Thus, a lost packet can be recovered even when the packet of a continuous long interval is lost, and consequentially, a seamless service may be provided.

    Abstract translation: 公开了一种优雅的退化前向纠错方法及其执行装置。 优雅的退化前向纠错方法确定以时间顺序方式输入的数据流的预定数量的时间间隔构成的编码单元数据组，确定在每次产生奇偶校验帧时使用的参考数据组 编码单元数据组的间隔，使用所确定的至少一个参考数据组生成奇偶校验帧，并且将生成的奇偶校验帧从包括构成编码单元数据组的时间间隔的多个时间间隔中的至少一个时间间隔分配 基于预定规则。 因此，即使当连续长间隔的分组丢失时，也可以恢复丢失的分组，并且因此可以提供无缝服务。

    METHOD AND DEVICE FOR FLEXIBLE MMT ASSET TRANSMISSION AND RECEPTION
    4.
    发明申请
    METHOD AND DEVICE FOR FLEXIBLE MMT ASSET TRANSMISSION AND RECEPTION 有权
    用于灵活MMT资产传输和接收的方法和装置

    公开(公告)号：US20150296231A1

    公开(公告)日：2015-10-15

    申请号：US14439450

    申请日：2014-01-24

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Sun Hyoung Kwon ,  Seong Jun Bae ,  Jin Young Lee ,  Kug Jin Yun

    IPC: H04N21/236 ,  H04N21/63 ,  H04N21/4385 ,  H04N21/434

    CPC classification number: H04N21/23605 ,  H04N21/23614 ,  H04N21/2362 ,  H04N21/4343 ,  H04N21/4348 ,  H04N21/4385 ,  H04N21/631

    Abstract: A method for transmitting an MMT packet in an MMT (MPEG Media Transport) system includes: generating an MMT asset by performing encapsulation based on a Media Processing Unit (MPU) generated based on a media Access Unit (AU); generating MMT Composition Information on the MMT asset; generating an MMT packet by packetizing the MMT asset and the MMT-CI; and transmitting the generated MMT packet to a receiving side, wherein the MMT-CI may contain dependency information of the MMT asset on at least one other MMT asset. Accordingly, it is possible to indicate whether an MMT packet depends on other MMT assets when transmitting and receiving multi-layered media data, and to support proper decoding of the MMT asset when providing hybrid delivery-based MMT service.

    Abstract translation: 一种用于在MMT（MPEG媒体传输）系统中发送MMT分组的方法包括：通过基于基于媒体接入单元（AU）生成的媒体处理单元（MPU）来执行封装来生成MMT资产; 在MMT资产上生成MMT组合信息; 通过分组MMT资产和MMT-CI来生成MMT分组; 以及将生成的MMT分组发送到接收侧，其中MMT-CI可以在至少一个其他MMT资产上包含MMT资产的依赖性信息。 因此，可以在发送和接收多层媒体数据时指示MMT分组是否依赖于其他MMT资产，并且在提供基于混合交付的MMT服务时支持MMT资产的适当解码。

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