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公开(公告)号：KR1020100034339A
公开(公告)日：2010-04-01
申请号：KR1020080093409
申请日：2008-09-23
Applicant: 한국전자통신연구원
IPC: H04N7/00 , H04N21/647
CPC classification number: H04N21/64784 , H04N21/234 , H04N21/2362
Abstract: PURPOSE: A video service providing method in a digital multimedia broadcast system and a terminal thereof are provided to supply video service which is same as video service received through connection with a communication network in a terrestrial DMB system from service disconnection timing. CONSTITUTION: A broadcast reception unit(101) receives a first video transport stream from a broadcast system. A communications unit(103) receives a second video transport stream corresponding to identifier information and play time information from a network connection service system. If video service is cut, a control unit(106) transfers the identifier information and the play time information to the communications unit. The control unit subsequently offers the video service through the second video signal.
Abstract translation: 目的：提供一种数字多媒体广播系统及其终端中的视频服务提供方法，以提供与通过与地面DMB系统中的通信网络连接而从服务断开定时接收的视频服务相同的视频服务。 构成：广播接收单元（101）从广播系统接收第一视频传输流。 通信单元（103）从网络连接服务系统接收对应于标识符信息和播放时间信息的第二视频传输流。 如果视频服务被切断，则控制单元（106）将标识符信息和播放时间信息传送到通信单元。 控制单元随后通过第二视频信号提供视频服务。
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公开(公告)号：KR1020100003206A
公开(公告)日：2010-01-07
申请号：KR1020090055139
申请日：2009-06-19
Applicant: 한국전자통신연구원
CPC classification number: H04L25/0228 , H04L1/0056 , H04L5/0044 , H04L5/0048 , H04L25/03292 , H04L27/2601 , H04L27/2613 , H04L2025/03414
Abstract: PURPOSE: A DMB(Digital Multimedia Broadcasting) transceiving apparatus and method are provided to include specific information in a pilot signal for channel estimation, thereby improving a data transfer rate. CONSTITUTION: A pilot signal generator(120) is used for estimation of a transmission channel in a receiving unit. The pilot signal generator creates a pilot signal. The pilot signal comprises one or more information. A subcarrier mapping unit(130) maps the pilot signal to subcarrier corresponding to the pilot signal. A modulator(140) modulates the output of the subcarrier mapping unit. The pilot signal has a value about the specific information, not a value which the receiving unit has previously acknowledged.
Abstract translation: 目的：提供一种DMB（数字多媒体广播）收发装置和方法，以在信道估计的导频信号中包含特定信息，从而提高数据传输速率。 构成：导频信号发生器（120）用于估计接收单元中的传输信道。 导频信号发生器产生导频信号。 导频信号包括一个或多个信息。 副载波映射部（130）将导频信号映射到与导频信号对应的副载波。 调制器（140）调制子载波映射单元的输出。 导频信号具有关于特定信息的值，而不是接收单元先前已经确认的值。
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公开(公告)号：KR1020100002110A
公开(公告)日：2010-01-06
申请号：KR1020090048761
申请日：2009-06-02
Applicant: 한국전자통신연구원
CPC classification number: H04H60/07 , H04B2201/70701 , H04B2201/70703 , H04H20/46 , H04H20/72 , H04H2201/11 , H04J13/18
Abstract: PURPOSE: A DMB(Digital Multimedia Broadcasting) transmission/reception apparatus and a method thereof equipped with a prior coding unit are provided to reduce computational complexity by including the prior coding unit. CONSTITUTION: A DMB transmission/reception apparatus comprise a variable spreader(120), a modulator(130) and an antenna(140). The modulator modulates the output of the variable spreader. The antenna transmits a message the forged signal. The variable spreader comprises a spreader and prior coding unit. A spreader diffuses the pilot signal in the frequency domain. The prior coding unit multiplies the orthogonal code in the signal outputted in spreader.
Abstract translation: 目的：提供一种DMB（数字多媒体广播）发送/接收装置及其配备有先前编码单元的方法，以通过包括现有编码单元来降低计算复杂度。 构成：DMB发送/接收装置包括可变扩展器（120），调制器（130）和天线（140）。 调制器调制可变扩展器的输出。 天线发送伪造信号的消息。 可变扩展器包括扩展器和先验编码单元。 扩频器在频域中扩散导频信号。 先验编码单元将乘法器中输出的信号中的正交码相乘。
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公开(公告)号：KR100932278B1
公开(公告)日：2009-12-18
申请号：KR1020070123348
申请日：2007-11-30
Applicant: 한국전자통신연구원
Abstract: A transmission method and a reception method for a DMB(Digital Multimedia Broadcasting) system are provided to maximally guarantee inverse compatibility of a real service signal in a receiver by transmitting hierarchical modulation information without changing a transmission format of the service signal. A first hierarchical signal and a second layer signal corresponding to data added to the first hierarchical data are modulated by using each modulation mode(S240). The modulated first and second hierarchical signal is hierarchically modulated(S250). A hierarchically modulated signal is transmitted through a data channel of a transmission frame. The transmission frame transmits information related to hierarchical modulation is transmitted through a sync channel for transferring decoding information(S260).
Abstract translation: 提供了一种用于DMB（数字多媒体广播）系统的传输方法和接收方法，以通过在不改变服务信号的传输格式的情况下发送分层调制信息来最大限度地保证接收机中的实服务信号的逆兼容性。 通过使用每种调制模式来调制与添加到第一分层数据的数据相对应的第一分层信号和第二分层信号（S240）。 调制的第一和第二分层信号被分层调制（S250）。 经分层调制的信号通过传输帧的数据信道传输。 通过用于传送解码信息的同步信道发送与分层调制有关的传输帧信息（S260）。
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公开(公告)号：KR1020090065176A
公开(公告)日：2009-06-22
申请号：KR1020070132641
申请日：2007-12-17
Applicant: 한국전자통신연구원
IPC: H04N21/236
CPC classification number: H04N21/2368 , H04N21/233 , H04N21/234 , H04N21/2385
Abstract: A multiplexing device of digital multimedia broadcasting, a multiplexing method, and a recording medium are provided to encode plural programs at different bit rates according to complexity degrees of the programs, thereby improving quality of the programs. Encoders(210) individually encode plural services at plural bit rates, and generate plural encoded services. A bit rate controller(220) individually determines the plural bit rates. A channel distributor(250) allocates at least one sub channel to each of the encoded services. The channel distributor allocates at least one shared channel to the encoded services. A frame generator(260) generates a transfer frame. The transfer frame includes the plural sub channels and the at least one shared channel.
Abstract translation: 提供数字多媒体广播的多路复用装置，复用方法和记录介质，以根据节目的复杂程度对不同比特率的多个节目进行编码，从而提高节目的质量。 编码器（210）以多个比特率单独编码多个业务，并生成多个编码业务。 比特率控制器（220）分别确定多个比特率。 信道分配器（250）向每个编码服务分配至少一个子信道。 信道分配器将至少一个共享信道分配给编码服务。 帧生成器（260）生成传送帧。 传送帧包括多个子信道和至少一个共享信道。
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Patent Agency Ranking
公开(公告)号：KR1020090065174A
公开(公告)日：2009-06-22
申请号：KR1020070132639
申请日：2007-12-17
Applicant: 한국전자통신연구원
IPC: H04N21/236 , H04N21/434
CPC classification number: H04N21/2368 , H04N19/30 , H04N21/23605 , H04N21/23608
Abstract: A transmission and reception method of a broadcasting signal is provided to be compatible with an existing visual radio broadcasting signal, thereby offering high-quality video/audio services. An audio encoder(100) encodes an inputted audio signal into a basic layer audio elementary stream and an enhancement layer audio elementary stream. A video encoder(200) encodes an inputted video signal into a basic layer video elementary stream and an enhancement layer video elementary stream. The basic layer audio and video elementary streams are multiplexed into basic layer transport streams of a second level. The enhancement layer audio and video elementary streams are multiplexed into enhancement layer transport streams of the second level.
Abstract translation: 提供广播信号的发送和接收方法以与现有的可视无线电广播信号兼容，从而提供高质量的视频/音频服务。 音频编码器（100）将输入的音频信号编码为基本层音频基本流和增强层音频基本流。 视频编码器（200）将输入的视频信号编码为基本层视频基本流和增强层视频基本流。 基本层音频和视频基本流被复用到第二级的基本层传输流中。 增强层音频和视频基本流被复用到第二级的增强层传输流中。
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公开(公告)号：KR100901875B1
公开(公告)日：2009-06-09
申请号：KR1020070072151
申请日：2007-07-19
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04L27/2604 , H03M13/1102 , H03M13/23 , H03M13/2957 , H03M13/356 , H04L27/261
Abstract: A hierarchical modulation device modulates a plurality of first hierarchical symbols according to a first modulation method to generate a plurality of first hierarchical modulation symbols, inserts a plurality of pilot symbols into a plurality of second hierarchical symbols to generate a plurality of pilot insertion symbols, modulates a plurality of pilot insertion symbols according to a second modulation method to generate a plurality of second hierarchical modulation symbols, and maps a plurality of first hierarchical modulation symbols and the plurality of second hier archical modulation symbols in the signal space to generate a plurality of hierarchical modulation symbols. Therefore, the hierarchical modulation device can improve receiving performance of the enhancement layer without influencing the base layer.
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公开(公告)号：KR1020090056274A
公开(公告)日：2009-06-03
申请号：KR1020070123348
申请日：2007-11-30
Applicant: 한국전자통신연구원
CPC classification number: H04N7/08 , H04H2201/11 , H04N21/236
Abstract: A transmission method and a reception method for a DMB(Digital Multimedia Broadcasting) system are provided to maximally guarantee inverse compatibility of a real service signal in a receiver by transmitting hierarchical modulation information without changing a transmission format of the service signal. A first hierarchical signal and a second layer signal corresponding to data added to the first hierarchical data are modulated by using each modulation mode(S240). The modulated first and second hierarchical signal is hierarchically modulated(S250). A hierarchically modulated signal is transmitted through a data channel of a transmission frame. The transmission frame transmits information related to hierarchical modulation is transmitted through a sync channel for transferring decoding information(S260).
Abstract translation: 提供了一种用于DMB（数字多媒体广播）系统的传输方法和接收方法，以通过在不改变服务信号的传输格式的情况下传送分级调制信息来最大限度地保证接收机中的实际业务信号的逆兼容性。 通过使用每个调制模式来调制对应于添加到第一分层数据的数据的第一分层信号和第二层信号（S240）。 调制的第一和第二分层信号被分层调制（S250）。 分层调制信号通过传输帧的数据信道传输。 通过用于传送解码信息的同步信道发送与分层调制有关的传输帧发送信息（S260）。
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29.发明公开디지털 멀티미디어 방송 송신 장치의 강화계층용 채널부호화장치, 디지털 방송 송신 장치, 디지털 방송 수신장치 및 서브채널 구성 필드(ＦＩＧ 0/1)의 확장 구조 无效用于数字多媒体广播发射机，数字多媒体广播发射机系统，数字多媒体广播接收系统和图0/1的扩展形式的增强编码的装置
公开(公告)号：KR1020080097929A
公开(公告)日：2008-11-06
申请号：KR1020080040363
申请日：2008-04-30
Applicant: 한국전자통신연구원
Abstract: A channel encoding apparatus for a reinforcing layer of a digital multimedia broadcast transmitting apparatus, a digital broadcast transmitting apparatus, a digital broadcast receiving apparatus and an expansion structure of a sub channel configuration field are provided to supply the sub channel configuration(FIG 0/1) for designating a protection level for a reinforcing layer. A hierarchic digital broadcasting transmission unit comprises an energy dispersal scrambler(501) and a turbo encoder(502). An energy dispersal scrambler performs the energy dispersal of an enhancement layer transport stream. A turbo encoder receives the input vector of the duo-binary which is the output of the energy dispersal scrambler.
Abstract translation: 提供数字多媒体广播发送装置的加强层的信道编码装置，数字广播发送装置，数字广播接收装置和子信道配置字段的扩展结构，以提供子信道配置（图0/1 ）用于指定加强层的保护等级。 分级数字广播传输单元包括能量分散扰频器（501）和turbo编码器（502）。 能量分散扰频器执行增强层传输流的能量扩散。 turbo编码器接收作为能量分散扰频器的输出的二进制二进制的输入向量。
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公开(公告)号：KR1020080013433A
公开(公告)日：2008-02-13
申请号：KR1020060074933
申请日：2006-08-08
Applicant: 한국전자통신연구원
IPC: H04N21/4782
CPC classification number: H04N21/4782 , H04H60/72 , H04H2201/11 , H04N21/8586
Abstract: A system and a method for providing an EPG(Electronic Program Guide) in a T(Terrestrial)-DMB(Digital Multimedia Broadcasting) are provided to produce the EPG as the broadcasting web service document and to offer the broadcasting web service document to users. A terrestrial DMB system provides an EPG to a terrestrial DMB terminal(40). An EPG storing member(10) stores the EPG transmitted from a service provider. An EPG change member(20) changes the EPG document with an XML type stored in the EPG storing member into a BWS EPG document of a broadcasting web site type. The BWS EPG document includes "explanations of broadcasting programs" and "preview scenes". The EPG change member includes the link information on the broadcasting program explained by the electronic program guide to the BWS EPG document. When the link information of the BWS EPG document offered to the terrestrial DMB terminal is selected by a user, the terrestrial DMB system provides the connected broadcasting program to the terrestrial DMB terminal.
Abstract translation: 提供了一种用于在T（地面）-DMB（数字多媒体广播）中提供EPG（电子节目指南）的系统和方法，以产生作为广播网络服务文档的EPG并向用户提供广播web服务文档。 地面DMB系统向地面DMB终端（40）提供EPG。 EPG存储部件（10）存储从服务提供商发送的EPG。 EPG改变成员（20）将存储在EPG存储成员中的XML类型的EPG文档改变为广播网站类型的BWS EPG文档。 BWS EPG文件包括“广播节目的解释”和“预览场景”。 EPG改变成员包括由BWS EPG文件的电子节目指南解释的关于广播节目的链接信息。 当用户选择提供给地面DMB终端的BWS EPG文档的链接信息时，地面DMB系统将连接的广播节目提供给地面DMB终端。
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