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公开(公告)号：US11070327B2
公开(公告)日：2021-07-20
申请号：US16691013
申请日：2019-11-21
申请人： Electronics and Telecommunications Research Institute , YONSEI UNIVERSITY WONJU INDUSTRY-ACADEMIC COOPERATION FOUNDATION
发明人： Chang Ki Kim , Kwang Deok Seo , Jeong Ju Yoo , Jin Woo Hong
IPC分类号： H04L1/18 , H04L12/841 , H04L12/825
摘要： The present invention discloses a method of re-transmission of a lost MMT packet by a packet transmission apparatus. The method includes generating a media processing unit (MPU) based on a media fragment unit (MFU) and generating an MMT asset by encapsulating the MPU; generating an MMT packet based on the MPU included in the generated MMT asset; and transmitting the generated MMT packet, wherein the method further comprises adding, in a signaling message related to re-transmission of the MMT packet, delay_constrained_ARQ_flag to indicate whether or not the MMT packet transmission apparatus supports a delay-constrained automatic repeat request (ARQ) function.
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公开(公告)号：US10523376B2
公开(公告)日：2019-12-31
申请号：US16121926
申请日：2018-09-05
申请人： Electronics and Telecommunications Research Institute , YONSEI UNIVERSITY WONJU INDUSTRY-ACADEMIC COOPERATION FOUNDATION
发明人： Chang Ki Kim , Kwang Deok Seo , Jeong Ju Yoo , Jin Woo Hong
IPC分类号： H04L1/18 , H04L12/841 , H04L12/825
摘要： The present invention discloses a method of re-transmission of a lost MMT packet by a packet transmission apparatus. The method includes generating a media processing unit (MPU) based on a media fragment unit (MFU) and generating an MMT asset by encapsulating the MPU; generating an MMT packet based on the MPU included in the generated MMT asset; and transmitting the generated MMT packet, wherein the method further comprises adding, in a signaling message related to re-transmission of the MMT packet, delay_constrained_ARQ_flag to indicate whether or not the MMT packet transmission apparatus supports a delay-constrained automatic repeat request (ARQ) function.
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3.发明申请METHOD FOR ESTIMATING NETWORK JITTER IN APPARATUS FOR TRANSMITTING CODED MEDIA DATA 审中-公开估计用于发送编码媒体数据的设备中的网络抖动器的方法公开(公告)号：US20140369222A1
公开(公告)日：2014-12-18
申请号：US14374292
申请日：2013-01-28
发明人： Chang Ki Kim , Tae Jung Kim , Jeong Ju Yoo , Young Ho Jeong , Jin Woo Hong , Kwang Deok Seo
CPC分类号： H04L43/087 , H04L43/106 , H04L65/4076 , H04L65/608 , H04L65/80 , H04N21/44209
摘要： The present invention relates to a method for estimating network jitter, which has the effect of more precisely estimating network jitter by using time information corresponding to a transmission time, which is transmitted from a transport layer in a transmitting end to a receiving end.
摘要翻译： 本发明涉及一种估计网络抖动的方法，其具有通过使用从发送端的传输层向接收端发送的传输时间对应的时间信息更精确地估计网络抖动的效果。
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4.发明申请METHOD AND APPARATUS FOR TRANSMITTING MEDIA DATA FOR MMT SYSTEM, AND APPARATUS AND METHOD FOR RECEIVING MEDIA DATA 审中-公开用于发送MMT系统的媒体数据的方法和装置，以及用于接收媒体数据的装置和方法公开(公告)号：US20140351874A1
公开(公告)日：2014-11-27
申请号：US14345074
申请日：2012-09-21
发明人： Jeong Ju Yoo , Chang Ki Kim , Tae Jung Kim , Young Ho Jeong , Jin Woo Hong , Kwang Deok Seo , Hong-Rae Lee
IPC分类号： H04N21/6437 , H04N21/61 , H04N21/442 , H04N21/24 , H04N21/236 , H04N21/434
CPC分类号： H04N21/6437 , H04N21/23602 , H04N21/2402 , H04N21/4305 , H04N21/4342
摘要： Provided are a method and apparatus for transmitting and receiving media data, which can provide D-layer timing information, which is transmitted from a media transmission service based on an MMT system and required for timely synchronization playout time of the media and media. The apparatus for transmitting the media data comprises a packetizer for generating a delivery layer packet (D-layer packet), which packetizes encapsulation layer data (E-layer data) to include timing information, wherein the timing information comprises sampling time information and transmission process delay information.
摘要翻译： 提供了一种用于发送和接收媒体数据的方法和装置，其可以提供基于MMT系统的媒体传输服务发送并且需要媒体和媒体的及时同步播放时间所需的D层定时信息。 用于发送媒体数据的装置包括分组器，用于生成传送层分组（D层分组），其将封装层数据（E层数据）分组化以包括定时信息，其中定时信息包括采样时间信息和传输过程 延迟信息。
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公开(公告)号：US10097319B2
公开(公告)日：2018-10-09
申请号：US15110854
申请日：2015-01-06
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , YONSEI UNIVERSITY WONJU INDUSTRY-ACADEMIC COOPERATION FOUNDATION
发明人： Chang Ki Kim , Kwang Deok Seo , Jeong Ju Yoo , Jin Woo Hong
IPC分类号： H04L1/18 , H04L12/841 , H04L12/825
摘要： The present invention discloses a method of re-transmission of a lost MMT packet by a packet transmission apparatus. The method includes generating a media processing unit (MPU) based on a media fragment unit (MFU) and generating an MMT asset by encapsulating the MPU; generating an MMT packet based on the MPU included in the generated MMT asset; and transmitting the generated MMT packet, wherein the method further comprises adding, in a signaling message related to re-transmission of the MMT packet, delay_constrained_ARQ_flag to indicate whether or not the MMT packet transmission apparatus supports a delay-constrained automatic repeat request (ARQ) function.
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公开(公告)号：US09641831B2
公开(公告)日：2017-05-02
申请号：US14525562
申请日：2014-10-28
发明人： Chang Ki Kim , Jeong Ju Yoo , Jin Woo Hong
IPC分类号： H04L12/26 , H04N17/00 , H04N21/24 , H04N21/242
CPC分类号： H04N17/004 , H04N21/24 , H04N21/242
摘要： A method of transmitting a Moving Picture Experts Group (MPEG) Media Transport (MMT) signaling message for Measurement Configuration (MC) processing in an MMT sending entity. The method includes generating an MC message with header information by setting a measurement mode (measurement_mode), which indicates information on a measurement start time (measurement_start_time) of a measurement item in an MMT receiving entity, to one of: an immediate measurement start, a measurement start at a predetermined time, a measurement start based on a predetermined condition, and an immediate measurement stop; and transmitting an MMT packet including the generated MC message to an MMT receiving entity.
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7.发明申请METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING PACKETS IN HYBRID TRANSMISSION SERVICE OF MMT 审中-公开在MMT混合传输服务中发送和接收分组的方法和装置公开(公告)号：US20150181003A1
公开(公告)日：2015-06-25
申请号：US14413494
申请日：2013-06-10
发明人： Chang Ki Kim , Jeong Ju Yoo , Jin Woo Hong , Kwang Deok Seo
CPC分类号： H04L69/22 , H04L67/02 , H04L67/14 , H04L69/28 , H04L69/327 , H04N21/2381 , H04N21/242 , H04N21/64322 , H04N21/6437 , H04N21/8547
摘要： The present invention relates to an apparatus for transmitting packets in an MPEG Media Transport (MMT) system, including: an MMT packetizing unit recording standard time information related to a media access unit for providing synchronization of the media access unit and generating MMT packets; and a transmission unit transmitting the generated MMT packets to the recipient side. Accordingly, synchronization between different media can be provided in a hybrid transmission environment where media streams belonging to one program are transmitted from different servers.
摘要翻译： 本发明涉及一种用于在MPEG媒体传输（MMT）系统中发送分组的装置，包括：MMT分组单元，记录与媒体接入单元相关的标准时间信息，用于提供媒体接入单元的同步并产生MMT分组; 以及发送单元，将生成的MMT分组发送到接收方。 因此，可以在混合传输环境中提供不同媒体之间的同步，其中属于一个节目的媒体流从不同的服务器发送。
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