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公开(公告)号：KR1020160074310A
公开(公告)日：2016-06-28
申请号：KR1020140183499
申请日：2014-12-18
IPC: H04N21/238 , H04N21/63 , H04N21/61 , H04N21/2381
CPC classification number: H04N21/238 , H04N21/23805 , H04N21/2381 , H04N21/61 , H04N21/631
Abstract: 하이브리드망에서의스트리밍방법및 그장치가제공된다. 방송망과통신망이결합된하이브리드망에서, 클라이언트장치는방송망을통하여비디오스트림을수신하는상태에서통신망으로의망전환이결정되면연동비디오스트림동기화를위한타임스탬프값을통신망을통하여스트리밍서버로전송하면서메타데이터파일을요청하고, 요청에따른타임스탬프메타데이터파일을수신하고분석하여시작세그먼트위치를찾는다. 클라이언트장치는시작세그먼트위치를토대로통신망을통하여스트리밍서버로부터관련세그먼트파일들을수신하여재생하며, 이후, 시작세그먼트위치에대응하는시간윈도우구간의메타데이터만을주기적으로요청하여제공받아비디오서비스를제공한다.
Abstract translation: 提供了一种混合网络中的流式传输方法及其装置。 在广播网络与通信网络组合的混合网络中，当在客户端设备经由广播网络接收到视频流的情况下确定了切换到通信网络的网络时，客户机设备发送相关联的视频流同步的时间戳值 通过通信网络到流服务器并且需要元数据文件。 然后，客户端设备接收并分析所需的时间戳元数据文件，并找到起始段位置。 客户端设备基于起始段的位置经由通信网络从流服务器接收并播放相关段文件，然后仅定期地要求与起始段位置相对应的时间窗口部分的元数据，并接收相同的段文件 ，从而提供视频服务。
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公开(公告)号：KR1020150021377A
公开(公告)日：2015-03-02
申请号：KR1020130098656
申请日：2013-08-20
Applicant: 한국전자통신연구원
IPC: H04N21/63 , H04N21/2343
CPC classification number: H04N21/64322 , H04H60/11 , H04H2201/11 , H04H2201/37 , H04L12/1836 , H04L12/189 , H04N21/4305 , H04N21/4307 , H04N21/4345 , H04N21/4347 , H04N21/4383 , H04N21/4622
Abstract: An apparatus for providing a terrestrial digital multimedia broadcasting (DMB) video service stores transport stream (TS) packets of a sub-channel of a video service to be transmitted through a communications network in association with a broadcasting network, in a stream DB, and when a request for a video stream in a bookmarked position is received through the communications network from a user, the apparatus searches the stream DB for a TS packet in the bookmarked position and transmits the searched TS packet through the communications network in an Internet protocol (IP) streamlining manner.
Abstract translation: 一种用于提供地面数字多媒体广播（DMB）视频业务的装置，存储在流DB中与广播网络相关联的通过通信网络发送的视频业务的子信道的传输流（TS）分组，以及 当通过通信网络从用户接收到对书签位置中的视频流的请求时，该装置在流DB中搜索书签位置中的TS分组，并通过因特网协议通过通信网络发送所搜索的TS分组（ IP）精简方式。
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123.发明公开
公开(公告)号：KR1020150001913A
公开(公告)日：2015-01-07
申请号：KR1020130074990
申请日：2013-06-28
Applicant: 한국전자통신연구원
IPC: H04N21/462 , H04N21/2662 , H04N21/63
CPC classification number: H04L65/4015 , H04L65/80
Abstract: 이종망 연계된 방송 스트림 전송 시스템에서 전송 스트림간 비트율을 보정하는 방법 및 장치가 제공된다. 본 발명은 방송망을 통해 고정비트율로 전송되는 제1 스트림을 수신함, 통신망을 통해 상황에 따라 가변비트율로 전송되는 제2 스트림을 수신함 및 상기 제1 스트림을 기초로 상기 제2 스트림의 비트율을 조절함을 포함한다.
Abstract translation: 提供了一种用于校正与异构网络相关联的广播流传输系统中的传输流之间的比特率的方法和装置。 本发明的方法包括：接收通过广播网络以固定比特率传输的第一流; 接收通过通信网络根据情况以可变比特率发送的第二流; 以及基于所述第一流来调整所述第二流的比特率。
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公开(公告)号：KR1020140113132A
公开(公告)日：2014-09-24
申请号：KR1020130028113
申请日：2013-03-15
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/2656 , H04L7/0004 , H04L1/004 , H04W4/06 , H04W56/00
Abstract: Provided are a method and apparatus for constructing SFN by the time synchronization of ETI signals outputted from different ensemble multiplexers. According to an embodiment of the present invention, the ETI signal which is time-synchronized with a specific ETI signal is outputted by the synchronization of time-synchronization related parameters included in the ETI frame even if a basic hierarchy and an improvement hierarchy are outputted from different ensemble multiplexers in an AT-DMB system. Therefore, by using the method and apparatus for ETI time synchronization according to the embodiment of the present invention, costs due to the addition of an AT-DMB exclusive ensemble multiplexer are reduced because an existing T-DMB ensemble multiplexer can be recycled in the construction of AT-DMB SFN.
Abstract translation: 提供一种用于通过从不同集合多路复用器输出的ETI信号的时间同步来构造SFN的方法和装置。 根据本发明的一个实施例，即使从ETI帧中包含的时间同步相关参数的同步，即使从基本层次和改进层次被输出也输出与特定ETI信号时间同步的ETI信号 AT-DMB系统中的不同组合多路复用器。 因此，通过使用根据本发明的实施例的用于ETI时间同步的方法和装置，由于添加了AT-DMB专用集成多路复用器而导致的成本降低，因为现有的T-DMB集成多路复用器可以在结构中再循环 的AT-DMB SFN。
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公开(公告)号：KR1020130113807A
公开(公告)日：2013-10-16
申请号：KR1020120036301
申请日：2012-04-06
Applicant: 한국전자통신연구원
CPC classification number: H04W36/02 , H04N21/438 , H04W36/14 , H04W36/18
Abstract: PURPOSE: An apparatus for supporting contents handover and a method thereof are provided to support the contents handover by being linked to a communication network in order for a user to watch broadcast contents continuously when signal transmission is unstable while the broadcast contents is provided through a broadcast network. CONSTITUTION: A handover controller (30) provides broadcast contents, by handing over to the other transmission network from a transmission network which provides broadcast contents to a user terminal among a communication network and a broadcast network. The handover controller decodes the broadcast contents in advance through the other transmission network if the handover controller enters a handover expected area as providing the broadcast contents through the transmission network. The handover controller supports continuous handover according as providing the pre-decoded broadcast contents to the user terminal through the other transmission network during handover. [Reference numerals] (10) Broadcast signal processor; (20) Communication network signal processor; (30) Handover controller; (40) Decoder output selection unit; (50) Image display unit
Abstract translation: 目的：提供一种用于支持内容切换的装置及其方法，以通过链接到通信网络来支持内容切换，以便当用户通过广播提供广播内容时，用户在信号传输不稳定时连续观看广播内容 网络。 构成：切换控制器（30）通过从通信网络和广播网络中的用户终端提供广播内容的传输网络切换到另一个传输网络来提供广播内容。 如果切换控制器通过传输网络提供广播内容，则越区切换控制器通过另一传输网络预先解码广播内容。 切换控制器通过在切换期间通过另一个传输网络向用户终端提供预解码的广播内容来支持连续切换。 （附图标记）（10）广播信号处理器; （20）通信网络信号处理器; （30）切换控制器; （40）解码器输出选择单元; （50）图像显示单元
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Patent Agency Ranking
公开(公告)号：KR101214561B1
公开(公告)日：2012-12-24
申请号：KR1020090106023
申请日：2009-11-04
Applicant: 한국전자통신연구원
Abstract: 계층변조기법이적용된방송시스템에서프레임동기검출용신호를수신하는방법은서비스제공신호와서비스제공신호에새로추가되는신호를포함하는계층변조신호로부터위상기준심볼신호를수신하고, 수신한위상기준심볼신호와동기입력신호를상호상관하여복수개의상호상관값을산출하여, 복수개의상호상관값중 피크상관값을토대로계층변조신호의시작시점을검출한다.
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公开(公告)号：KR101203721B1
公开(公告)日：2012-11-21
申请号：KR1020080117083
申请日：2008-11-24
Applicant: 한국전자통신연구원
Abstract: 본 발명은 버스트 통신 수신 시스템의 프레임 동기 장치 및 방법에 관한 것이다.
본 발명은 버스트 방식의 통신 수신 시스템에서 다른 사용자로부터 수신되는 버스트마다 신호 크기가 일정치 않은 상황에서 안정적으로 정확한 프레임 동기를 수행할 수 있으며, 프레임 동기가 이루어진 뒤의 크기가 일정한 버스트 신호를 이용하여 버스트당 정확한 자동 이득 제어를 수행할 수 있다.
버스트 방식, 프레임 동기, 코릴레이션 상대값, 자동 이득 제어-
公开(公告)号：KR1020120065884A
公开(公告)日：2012-06-21
申请号：KR1020100127219
申请日：2010-12-13
Applicant: 한국전자통신연구원
CPC classification number: H04L27/265 , H04B7/0413 , H04L1/02
Abstract: PURPOSE: A signal receiving apparatus in MIMO-OFDM systems and a running method thereof are provided to apply adaptive QRD-M based on virtual channel payoff matrix. CONSTITUTION: A running method of signal receiving apparatus in MIMO-OFDM systems comprises the following steps: converting signal of input radio frequency band into baseband signal by a RF processing unit(50); outputting parallel frequency domain symbols of a plurality of subcarriers by fast Fourier transform(FFT) of the baseband signal by an OFDM(Orthogonal Frequency Division Multiplexing) demodulation unit(60); applying an algorithm which reduces condition number for channel matrix formed between a transmitter and a receiver by a channel estimation unit(70) using the plurality of subcarriers; calculating new virtual channel matrices by the channel estimation unit; and applying QRD-M detecting technique to the parallel frequency domain symbols and the virtual channel matrices by a signal detection unit(80).
Abstract translation: 目的：提供MIMO-OFDM系统中的信号接收装置及其运行方法，以应用基于虚拟信道支付矩阵的自适应QRD-M。 构成：MIMO-OFDM系统中的信号接收装置的运行方法包括以下步骤：通过RF处理单元（50）将输入射频信号转换成基带信号; 通过OFDM（正交频分复用）解调单元（60）通过基带信号的快速傅里叶变换（FFT）输出多个子载波的并行频域符号; 应用使用所述多个子载波的信道估计单元（70）减少在发射机和接收机之间形成的信道矩阵的条件数的算法; 由信道估计单元计算新的虚拟信道矩阵; 以及通过信号检测单元（80）将QRD-M检测技术应用于并行频域符号和虚拟信道矩阵。
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公开(公告)号：KR1020110065313A
公开(公告)日：2011-06-15
申请号：KR1020100104785
申请日：2010-10-26
Applicant: 한국전자통신연구원
IPC: H04H60/72
CPC classification number: H04H60/72 , H04H2201/11 , H04H2201/14
Abstract: PURPOSE: A broadcasting service providing method of a broadcasting signal transceiving apparatus is provided to transmit integrated EPG information including physical channel information though an additionally secured improved layer. CONSTITUTION: A broadcasting signal receiving apparatus receives integrated EPG(Electronic Program Guide) information with the selection of an integrated EPG channel(S1110). The broadcasting signal receiving apparatus extracts the physical channel information of each frequency block within a corresponding broadcasting frequency with the analysis of the integrated EPG information(S1120,S1130). If a user selects a special channel, the broadcasting signal receiving apparatus moves to a channel within a corresponding frequency block with the extracted physical channel information(S1140,S1150). The broadcasting signal receiving apparatus extracts a broadcasting service from a corresponding channel(S1160).
Abstract translation: 目的：提供一种广播信号收发装置的广播服务提供方法，用于通过附加保护的改进层传输包括物理信道信息的集成EPG信息。 构成：广播信号接收装置通过选择集成EPG信道来接收综合EPG（电子节目指南）信息（S1110）。 广播信号接收装置通过对集成EPG信息的分析，提取相应广播频率内的每个频率块的物理信道信息（S1120，S1130）。 如果用户选择特殊频道，则广播信号接收装置利用所提取的物理频道信息移动到相应频率块内的频道（S1140，S1150）。 广播信号接收装置从对应的频道提取广播业务（S1160）。
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公开(公告)号：KR1020110060303A
公开(公告)日：2011-06-08
申请号：KR1020090116847
申请日：2009-11-30
Applicant: 한국전자통신연구원
IPC: H04N7/015
CPC classification number: H04N21/4348 , H04H20/18 , H04L1/0065 , H04L1/0071 , H04L25/03866 , H04N21/4382 , H04N21/440227 , H04N21/6112 , H04N21/6547
Abstract: PURPOSE: A signal receiving apparatus and method are provided to reinforce the function of the signal receiving apparatus by transmitting only the minimum signaling information to an advanced layer even when there is no specific signaling information of a base-layer broadcast signal out of the AT-DMB(Advanced Terrestrial Digital Multimedia Broadcast) signals of a signal transmitting apparatus. CONSTITUTION: A demodulator(220) demodulates the broadcast signal of a signal transmission apparatus. Based on a layer modulation mode value, the demodulator demodulates the broadcast signal again. Fast information channel data signal processors(230,240) output the fast information channel data of a first layer and the fast information channel data of a second layer through the first fast information channel data of the demodulator. A layer modulation mode extractor(260) extracts a layer modulation mode value from the fast information channel data of the second layer.
Abstract translation: 目的：提供一种信号接收装置和方法，即使在从AT-T中不存在基本层广播信号的特定信令信息的情况下，仅通过仅发送最小信令信息到高级层来增强信号接收装置的功能， 信号发送装置的DMB（高级地面数字多媒体广播）信号。 构成：解调器（220）对信号传输装置的广播信号进行解调。 基于层调制模式值，解调器再次解调广播信号。 快速信息通道数据信号处理器（230,240）通过解调器的第一快速信息通道数据输出第一层的快速信息通道数据和第二层的快速信息通道数据。 层调制模式提取器（260）从第二层的快速信息信道数据中提取层调制模式值。
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