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31.发明公开
公开(公告)号：KR1020080068520A
公开(公告)日：2008-07-23
申请号：KR1020070096872
申请日：2007-09-21
Applicant: 한국전자통신연구원 , 연세대학교 산학협력단
IPC: H04N21/8547 , H04L29/06 , H04L7/00
CPC classification number: H04N21/8547 , H04L65/607 , H04L65/608 , H04L65/80 , H04L69/28 , H04N21/262 , H04N21/2662 , H04N21/6437
Abstract: An apparatus and a method for generating time stamping for an RTP packetization of an SVC(Scalable Video Coding) video, and an RTP packetization system using the same are provided to generate the time stamp of an NAL unit, thereby normally performing RTP packetization of the SVC video even though a display order of a frame is different from an encoding order. An RTP(Real time Transport Protocol) time stamp value for an IDR(Instantaneous Decoding Refresh) frame is set(601). By checking a header of an inputted NAL(Network Abstraction Layer) unit, frame attribute information is confirmed(602). If the frame attribute information is a key frame corresponding to a first frame within a GOP(Group Of Picture), an RTP time stamp value is calculated.
Abstract translation: 提供了一种用于生成用于SVC（可缩放视频编码）视频的RTP分组化的时间戳的装置和方法，以及使用该视频的RTP分组化系统以产生NAL单元的时间戳，从而正常地执行 SVC视频即使帧的显示顺序与编码顺序不同。 设置IDR（瞬时解码刷新）帧的RTP（实时传输协议）时间标记值（601）。 通过检查输入的NAL（网络抽象层）单元的报头，确认帧属性信息（602）。 如果帧属性信息是与GOP（图像组）内的第一帧相对应的关键帧，则计算RTP时间戳值。
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32.发明授权
公开(公告)号：KR100776680B1
公开(公告)日：2007-11-19
申请号：KR1020060125144
申请日：2006-12-08
Applicant: 한국전자통신연구원 , 연세대학교 산학협력단
IPC: H04N7/24
CPC classification number: H04N21/6437 , H04N21/234327 , H04N21/2368 , H04N21/2662
Abstract: A method for efficient packet type classification to SVC(Scalable Video Coding) coded video bit streams, and an apparatus and a method for performing RTP(Real time Transport Protocol) packetization are provided to transmit the SVC coded video bit streams more efficiently through an IP(Internet Protocol) network such as Internet or the like. A method for packet type classification comprises: inducing temporal/spatial hierarchy relation information between respective NAL(Network Abstract Layer) units from field information defined in an NAL unit header of a scalable layer; grasping an encoding information type by applying complex scalability encoding to a hierarchy structure of SVC(Scalable Video Coding); and deciding an RTP(Real time Transport Protocol) packet type for a corresponding SVC coded video bit stream by using the grasped encoding information type and the temporal/spatial hierarchy relation information between the induced NAL units.
Abstract translation: 提供了一种用于SVC（可缩放视频编码）编码视频比特流的有效分组类型分类的方法，以及用于执行RTP（实时传输协议）分组化的装置和方法，以通过IP更有效地发送SVC编码的视频比特流 （因特网协议）网络，诸如因特网等。 一种用于分组类型分类的方法包括：根据在可伸缩层的NAL单元报头中定义的字段信息，在相应的NAL（网络抽象层）单元之间引入时间/空间层次关系信息; 通过将复杂的可扩展性编码应用于SVC（可缩放视频编码）的层次结构来掌握编码信息类型; 以及通过使用所掌握的编码信息类型和诱导的NAL单元之间的时间/空间层级关系信息来确定对应的SVC编码视频比特流的RTP（实时传输协议）分组类型。
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公开(公告)号：KR102049907B1
公开(公告)日：2019-11-28
申请号：KR1020190027761
申请日：2019-03-11
Applicant: 한국전자통신연구원 , 연세대학교 원주산학협력단
IPC: H04N21/8547 , H04N21/236 , H04N21/242 , H04N21/434 , H04N21/43
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34.发明公开
公开(公告)号：KR1020130032842A
公开(公告)日：2013-04-02
申请号：KR1020120105347
申请日：2012-09-21
Applicant: 한국전자통신연구원 , 연세대학교 원주산학협력단
IPC: H04N7/24
CPC classification number: H04N21/6437 , H04N21/23602 , H04N21/2402 , H04N21/4305 , H04N21/4342
Abstract: PURPOSE: A media data transmitting device for an MMT system, a method thereof, a media data receiving device, and a method thereof are provided to supply timing information for temporal synchronization between media and play timing of the media in an MMT system-based media transmission service. CONSTITUTION: An encoder(310) generates a media stream by encoding media data. A buffer(320) stores the media stream. An encapsulating unit(330) generates encapsulation layer data by encapsulating the media stream. A packetizing unit(340) generates a delivery layer packet including timing information by packetizing the encapsulation layer data. A transmitting unit(350) transmits the delivery layer packet. [Reference numerals] (310) Encoder(Media Encoder); (320) Buffer(Buffer); (330) Encapsulating unit(Encapsulator); (340) Packetizing unit(Packetizer); (350) Transmitting unit; (AA) Media data;
Abstract translation: 目的：提供一种用于MMT系统的媒体数据发送装置，其方法，媒体数据接收装置及其方法，以在基于MMT系统的媒体中提供媒体和媒体播放定时之间的时间同步的定时信息 传输服务。 构成：编码器（310）通过对媒体数据进行编码来生成媒体流。 缓冲器（320）存储媒体流。 封装单元（330）通过封装媒体流来生成封装层数据。 分组单元（340）通过打包封装层数据来生成包括定时信息的传送层分组。 发送单元（350）发送发送层分组。 （编号）（310）编码器（媒体编码器） （320）缓冲区（缓冲区）; （330）封装单元（Encapsulator）; （340）打包单元（Packetizer）; （350）发射单元; （AA）媒体数据;
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公开(公告)号：KR1020130009670A
公开(公告)日：2013-01-23
申请号：KR1020120076394
申请日：2012-07-13
Applicant: 한국전자통신연구원 , 연세대학교 원주산학협력단
IPC: H04N7/24
CPC classification number: H04L12/56 , H04N21/2362 , H04N21/242
Abstract: PURPOSE: A packet transmission device in a moving picture experts group media transport(MMT) system, a method, a packet receiving device and a method are provided to utilize MMT clock reference(MCR) time stamp information of a D layer and presentation time stamp(PTS) information of an E layer, thereby effectively expressing time stamp related information necessary for transmitting MMT based media. CONSTITUTION: A MMT packetizing unit(400) generates a MMT packet based on an inputted presentation unit. The MMT packetizing unit generates the MMT packet including at least one of PTS information and MCR information. The PTS is timing information indicating a presentation time of the presentation unit in a header of an E layer. The MCR is time stamp information including information for network jitter measurement and media synchronization in the header in a D layer. [Reference numerals] (410) M-unit generation unit; (420) MMT packet generation unit; (430) Transmitter buffer
Abstract translation: 目的：提供运动图像专家组媒体传输（MMT）系统中的分组传输设备，方法，分组接收设备和方法，以利用D层的MMT时钟参考（MCR）时间戳信息和呈现时间戳 （PTS）信息，从而有效地表达发送基于MMT的媒体所需的时间戳相关信息。 构成：MMT分组单元（400）基于输入的表示单元生成MMT分组。 MMT分组单元生成包括PTS信息和MCR信息中的至少一个的MMT分组。 PTS是表示E层的头部中的呈现单元的呈现时间的定时信息。 MCR是D层中头部的网络抖动测量和媒体同步信息的时间戳信息。 （附图标记）（410）M单元生成单元; （420）MMT分组生成单元; （430）发送器缓冲器
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Patent Agency Ranking
公开(公告)号：KR1020120008432A
公开(公告)日：2012-01-30
申请号：KR1020110030807
申请日：2011-04-04
Applicant: 한국전자통신연구원 , 연세대학교 원주산학협력단
CPC classification number: H04L65/608 , H04L65/601 , H04L65/602 , H04N21/2343 , H04N21/23439 , H04N21/2662 , H04N21/6125 , H04N21/6379 , H04N21/8456 , H04N21/85406
Abstract: PURPOSE: A streaming service transmitting/receiving device and a method thereof are provided to supply a quality adaptive HTTP streaming service for an ISO file including multimedia tracks, thereby supporting a multi bit rate and multi resolution. CONSTITUTION: A server(1400) receives a request about a first small ISO file from a terminal(1410). The server generates the first small ISO file based on an original file. The server transmits the first small ISO file to the terminal through streaming. The first small ISO file includes at least one first image chunk and at least one voice chunk. At least one image chunk and at least one voice chunk are interleaved in the first small ISO file.
Abstract translation: 目的：提供流服务发送/接收设备及其方法，为包括多媒体轨道的ISO文件提供质量自适应HTTP流服务，从而支持多比特率和多分辨率。 构成：服务器（1400）从终端接收关于第一个小ISO文件的请求（1410）。 服务器将根据原始文件生成第一个小型ISO文件。 服务器通过流式传输第一个小ISO文件到终端。 第一个小ISO文件包括至少一个第一图像块和至少一个语音块。 至少一个图像块和至少一个语音块被交织在第一个小ISO文件中。
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公开(公告)号：KR1020110061309A
公开(公告)日：2011-06-09
申请号：KR1020090117918
申请日：2009-12-01
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A source-channel combination method and satellite broadcasting system applying the same are provided to effectively solve a damp problem without changing the structure of a system. CONSTITUTION: A source-channel combination method includes as follows: a step of checking whether a channel SNR(Signal-Noise ratio) has changed(S43); a step of selecting MODCOD suitable for the channel SNR(S46); a step of calculating a source encoding rate by using valid information bit rate per unit symbol of the selected MODCOD(S47); a step of extracting and packetizing a NAL(Network Astraction Layer) unit(S50); a step of configuring a BB(Baseband) frame by bounding packet(S51); a step of encoding and modulating a BB frame(S52).
Abstract translation: 目的：提供一种源通道组合方法和应用该方法的卫星广播系统，以有效解决潮湿问题，而不改变系统的结构。 构成：源通道组合方法包括以下步骤：检查信道SNR（信噪比）是否已改变的步骤（S43）; 选择适合于信道SNR的MODCOD的步骤（S46）; 通过使用所选MODCOD的每单位符号的有效信息比特率来计算源编码率的步骤（S47）; 提取和打包NAL（网络抽象层）单元的步骤（S50）; 通过边界分组配置BB（基带）帧的步骤（S51）; 编码和调制BB帧的步骤（S52）。
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公开(公告)号：KR100986555B1
公开(公告)日：2010-10-07
申请号：KR1020080034323
申请日：2008-04-14
Applicant: 한국전자통신연구원
IPC: H04L12/861 , H04N21/43
Abstract: 본 발명은 프로그레시브 멀티미디어 스트리밍 서비스를 위한 초기 버퍼링 시간 결정 방법 및 그 시스템에 관한 것으로, 프로그레시브 스트리밍 서비스(Progressive streaming service)를 위한 패킷을 수신하고, 수신된 패킷이 버퍼에서 버퍼링되는 시간 값에 기초하여, 버퍼에서의 패킷 고갈이 발생할 확률을 계산하고, 계산된 패킷 고갈이 발생할 확률이 기 선정된 값보다 큰 경우, 연속 패킷 손실 시간 값 및 왕복 전송 시간 값을 이용하여 버퍼의 패킷 고갈을 방지할 수 있는 버퍼링 시간을 산출한다.
프로그레시브 멀티미디어 스트리밍, 패킷, 버퍼링-
公开(公告)号：KR100916505B1
公开(公告)日：2009-09-08
申请号：KR1020080025042
申请日：2008-03-18
Applicant: 한국전자통신연구원
CPC classification number: G11B27/10 , H04L65/604 , H04L65/608 , H04N21/4305 , H04N21/4307
Abstract: 본 발명의 정상 재생 타임을 이용한 스케일러블 비디오 코딩 정보와 어드밴스드 오디오 코딩 정보의 동기화 지원 방법은, 디코딩 장치를 통하여 비디오 정보를 수신하는 단계, 상기 디코딩 장치를 통하여 오디오 정보를 수신하는 단계, 상기 수신된 비디오 정보에 포함된 실시간 프로토콜(RTP: Real Timed Protocol) 타임 스탬프(Time Stamp)를 이용하여 상기 비디오 정보의 정상 재생 타임(NPT: Normal Play Time)을 계산하는 단계, 상기 수신된 오디오 정보에 포함된 실시간 프로토콜(RTP: Real Timed Protocol) 타임 스탬프(Time Stamp)를 이용하여 상기 오디오 정보의 정상 재생 타임(NPT: Normal Play Time)을 계산하는 단계, 상기 비디오 정보의 정상 재생 타임과 상기 오디오 정보의 정상 재생 타임을 비교하여 차이값을 계산하는 단계, 상기 계산된 차이값이 특정 동기화 영역에 포함되는지 여부를 판단하는 단계 및 상기 판단 결과 상기 계산된 차이값이 특정 동기화 영역에 포함되는 경우, 상기 오디오 정보와 상기 비디오 정보를 출력하는 단계를 포함한다.
RTP, NPT, 동기화, SVC, AAC-
公开(公告)号：KR1020090090242A
公开(公告)日：2009-08-25
申请号：KR1020080025042
申请日：2008-03-18
Applicant: 한국전자통신연구원
CPC classification number: G11B27/10 , H04L65/604 , H04L65/608 , H04N21/4305 , H04N21/4307
Abstract: A synchronization supporting method of scalable video coding information and advanced audio coding information and an apparatus thereof are provided to perform synchronization of two media by inducing NPT(Normal Play Time) from time stamps about the received video and audio. An information receiver(110) receives video information and audio information. A video information analyzer(120) calculates NPT of the video information by using the real time protocol time stamp. An audio information analyzer(130) calculates the normal play time of the audio information. An operating unit(140) calculates the normal play time of the video information with 'the normal play time of the audio information. A deciding unit(150) determines the calculated difference is included in a particular synchronization area.
Abstract translation: 提供了可分级视频编码信息和高级音频编码信息的同步支持方法及其装置，通过从关于接收到的视频和音频的时间戳中引发NPT（正常播放时间）来执行两个媒体的同步。 信息接收器（110）接收视频信息和音频信息。 视频信息分析器（120）通过使用实时协议时间戳来计算视频信息的NPT。 音频信息分析器（130）计算音频信息的正常播放时间。 操作单元（140）利用“音频信息的正常播放时间”来计算视频信息的正常播放时间。 决定单元（150）确定计算出的差值包括在特定同步区域中。
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