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公开(公告)号：KR1020120017392A
公开(公告)日：2012-02-28
申请号：KR1020110065505
申请日：2011-07-01
Applicant: 한국전자통신연구원
CPC classification number: H04N7/08 , H04L1/006 , H04L1/0065 , H04L27/2601 , H04N5/455
Abstract: PURPOSE: A broadcast data transceiving method in a digital broadcast system and a device thereof are provided to obtain additional transmission capacity while maintaining reverse-compatibility with an ATSC mode. CONSTITUTION: A detector(362) determines whether a level of a main data symbol belongs to a first group. When the level of the main data symbol belongs to the first group, a mapping unit(366) maps the main data symbol in an extension level using a modulation value of additional data. When the level of the main data symbol belongs to a second group, a bypass unit(364) maintains the level of the main data symbol.
Abstract translation: 目的：提供数字广播系统中的广播数据收发方法及其装置，以获得额外的传输容量，同时保持与ATSC模式的反向兼容性。 构成：检测器（362）确定主数据符号的电平是否属于第一组。 当主数据符号的级别属于第一组时，映射单元（366）使用附加数据的调制值将主数据符号映射到扩展级。 当主数据符号的级别属于第二组时，旁路单元（364）维持主数据符号的电平。
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公开(公告)号：KR1020120012435A
公开(公告)日：2012-02-09
申请号：KR1020110075708
申请日：2011-07-29
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A method for transmitting/receiving a broadcast signal in a digital broadcasting system and a device thereof are provided to efficiently transmit additional data while the device maintains compatibility with an existing digital broadcasting system. CONSTITUTION: A main signal generating unit(802) generates a main signal using main data. First to N additional signal generating units(804,806) generate an additional signal with lower power than the main signal using additional data. An additional signal frame generating unit(812) uses an additional signal frame using the additional signal and a frame header. A broadcast signal generating unit(814) generates the broadcast signal using the main signal and the additional signal frame.
Abstract translation: 目的：提供一种用于在数字广播系统中发送/接收广播信号的方法及其装置，用于在设备保持与现有数字广播系统的兼容性的同时有效地发送附加数据。 构成：主信号生成单元（802）使用主数据生成主信号。 首先到N个附加信号发生单元（804,806）使用附加数据产生具有比主信号低的功率的附加信号。 附加信号帧生成单元（812）使用附加信号和帧头部使用附加信号帧。 广播信号生成单元（814）使用主信号和附加信号帧来生成广播信号。
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公开(公告)号：KR1020110138146A
公开(公告)日：2011-12-26
申请号：KR1020110035727
申请日：2011-04-18
Applicant: 한국전자통신연구원 , 전남대학교산학협력단
CPC classification number: H04B7/0443 , H04B7/0682 , H04L27/0008 , H04L27/367 , H04W52/262 , H04B7/0434 , H04B7/0456 , H04B7/0617 , H04B7/0857 , H04L1/0054
Abstract: PURPOSE: A broadcasting data transmission system is provided to improve data transmission performance in a fading channel by decoding a data stream. CONSTITUTION: A broadcasting data transmission apparatus controls the transmission power of a data stream according to a modulation method about each transmission antenna(310). The broadcasting data transmission apparatus previously codes the data stream controlled by the transmission power using a pre-coding matrix according to the modulation method(320). The broadcasting data transmission apparatus transmits the coded data stream to a reception unit using the transmission antenna(330).
Abstract translation: 目的：提供广播数据传输系统，通过解码数据流来改善衰落信道中的数据传输性能。 构成：广播数据发送装置根据关于每个发送天线（310）的调制方法来控制数据流的发送功率。 广播数据发送装置根据调制方式（320），使用预编码矩阵预先编码由发送功率控制的数据流。 广播数据发送装置使用发送天线（330）将编码数据流发送到接收单元。
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公开(公告)号：KR101094441B1
公开(公告)日：2011-12-20
申请号：KR1020070116459
申请日：2007-11-15
Applicant: 한국전자통신연구원
IPC: H04N21/236
CPC classification number: H04N21/64315 , H04N19/39 , H04N21/234327 , H04N21/236
Abstract: 방송 신호 전송 방법에서, 전송 프레임은 기존의 지상파 DMB 신호의 구조와 동일한 구조를 가지며, 기본 계층 서비스 스트림을 포함하는 전송 프레임은 기본 계층으로 변조되고, 강화 계층 서비스 스트림을 포함하는 전송 프레임은 강화 계층으로 변조된다. 이때, 강화 계층 서비스 스트림은 강화 계층 서비스를 제공하기 위하여 기본 계층 서비스 스트림에 포함되지 않은 부가적인 데이터로 구성된다.
이와 같이 하면, 기존의 지상파 DMB와 호환가능하면서도, 고전송 효율을 요구하는 고품질의 서비스를 제공할 수 있다. 이때, 고전송 효율은 기존의 지상파 DMB보다 높은 데이터 전송률을 의미한다.
지상파 DMB, 방송, 계층적 변조 방식, 고품질 서비스, 비디오 서비스-
公开(公告)号：KR101074113B1
公开(公告)日：2011-10-17
申请号：KR1020080050263
申请日：2008-05-29
Applicant: 한국전자통신연구원
IPC: H04N21/236 , H04N21/434
CPC classification number: H04N21/23614 , H04N21/234309 , H04N21/23439 , H04N21/2365 , H04N21/2381 , H04N21/2383 , H04N21/242 , H04N21/4122 , H04N21/4126 , H04N21/41407 , H04N21/4347 , H04N21/4382 , H04N21/64315
Abstract: 전송프레임구조는, 전송프레임의다중화정보를포함하는프레임헤더; 및상기전송프레임이제공하는서비스에대한데이터정보를포함하는프레임바디를포함한다. 또한, 상기프레임헤더는, 상기전송프레임의시작위치를추출하기위한동기신호정보를포함하는프레임동기신호부; 및상기전송프레임이포함하고있는데이터의다중화정보―상기전송프레임이포함하고있는데이터의전송모드, 변조레벨, 계층변조, 에러정정부호의정보―를포함하는프레임정보부를포함할수 있다.
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Patent Agency Ranking
公开(公告)号：KR1020110070418A
公开(公告)日：2011-06-24
申请号：KR1020090127233
申请日：2009-12-18
Applicant: 한국전자통신연구원
IPC: H04N7/015
CPC classification number: H03M13/356 , H03M13/1102 , H03M13/2906 , H03M13/2936 , H03M13/2957 , H03M13/2966 , H04L1/0045 , H04L1/006 , H04L1/0065 , H04L1/0071
Abstract: PURPOSE: A T-DMB(Terrestiral-Digital Multimedia Broadcasting) transmitter and receiver are provided to improve transfer capacity keeping reverse compatibility. CONSTITUTION: An RS(Reed-Solomon) encoder(320) performs the RS encoding of a broadcasting signal. An FEC(Forward Error Correction) encoder(330) performs the channel encoding of an additional signal. A selector(340) selects the RS-encoded broadcasting signal or the channel-encoded additional signal. A VSB(Vestigial Side Band) transmitting unit(370) transmits the signal through an transmission antenna to a receiver.
Abstract translation: 目的：提供T-DMB（Terrestiral-Digital Multimedia Broadcasting）发射机和接收机，以提高传输容量，保持反向兼容性。 构成：RS（Reed-Solomon）编码器（320）执行广播信号的RS编码。 FEC（前向纠错）编码器（330）执行附加信号的信道编码。 选择器（340）选择RS编码的广播信号或信道编码的附加信号。 VSB（残留边带）发送单元（370）通过发送天线将信号发送到接收机。
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公开(公告)号：KR1020100062873A
公开(公告)日：2010-06-10
申请号：KR1020090038475
申请日：2009-04-30
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus and a method for controlling an infrastructure are provided to control remote control objects which are located in a wire region using a simple receiver. CONSTITUTION: A broadcasting contents modulator(302) modulates broadcasting contents(301) into a pre-set mode. A signal generator(303) generates information signal for controlling the remote control of an infrastructure. An adding unit(304) combines the modulated broadcasting contents and the information signal. A digital TV(DTV) signal transmitter(305) converts the added signal to DTV broadcasting signal. The DTV signal transmitter transmits the converted DTV broadcasting signal.
Abstract translation: 目的：提供一种用于控制基础设施的装置和方法，以使用简单的接收器来控制位于有线区域中的遥控对象。 构成：广播内容调制器（302）将广播内容（301）调制成预设模式。 信号发生器（303）生成用于控制基础设施的远程控制的信息信号。 加法单元（304）组合调制后的广播内容和信息信号。 数字TV（DTV）信号发送器（305）将添加的信号转换为DTV广播信号。 DTV信号发射机发送转换的DTV广播信号。
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公开(公告)号：KR1020100025869A
公开(公告)日：2010-03-10
申请号：KR1020080084601
申请日：2008-08-28
Applicant: 한국전자통신연구원
CPC classification number: H04L27/261 , H04L25/0204 , H04L25/0224 , H04L25/03159 , H04L27/2647 , H04L27/2657 , H04L27/2662 , H04L2025/03414
Abstract: PURPOSE: A method of channel equalization using channel estimation and a device for the same are provided to change a channel property in a time domain, thereby improving the performance of channel equalization. CONSTITUTION: A channel estimation unit(330) performs channel estimation using a pilot signal of a frequency domain. A digital filter(310) changes a channel property in a time domain using a channel estimation result estimated from the channel estimation unit. A channel equalization unit(320) performs channel equalization in the frequency domain of a signal changed in the digital filter. The channel estimation unit obtains the channel property in a time domain using the pilot signal of the frequency domain. The channel estimation unit performs channel estimation using the channel property in the obtained time domain.
Abstract translation: 目的：提供使用信道估计的信道均衡的方法及其设备，以改变时域中的信道特性，从而提高信道均衡性能。 构成：信道估计单元（330）使用频域的导频信号进行信道估计。 数字滤波器（310）使用从信道估计单元估计的信道估计结果来改变时域中的信道特性。 信道均衡单元（320）在数字滤波器中改变的信号的频域中执行信道均衡。 信道估计单元使用频域的导频信号在时域中获得信道特性。 信道估计单元使用所获得的时域中的信道特性来执行信道估计。
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公开(公告)号：KR1020090025838A
公开(公告)日：2009-03-11
申请号：KR1020070090977
申请日：2007-09-07
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2695 , H04H2201/11 , H04L5/0007 , H04L27/01 , H04L27/265
Abstract: An apparatus and a method for equalizing the reception channel in an OFDM(Orthogonal Frequency Division Multiplexing) transmission system and a DMB(Digital Multimedia Broadcasting) receiving apparatus applying the same are provided to improve the performance of mobile reception in a transmission system in which pilot signal is not used. A channel estimator(520) estimates channel as a symbol unit with the reference signal received from the standard signal creation part(550). A channel filtering part(530) removes the noises of the presumed channel value. A channel equalization part(540) equalizes the channel by using the estimation channel value. The channel estimator estimates the PRS(Phase Reference Symbol) of the received frame by the reference signal.
Abstract translation: 提供了一种用于均衡OFDM（正交频分复用）传输系统中的接收信道和应用其的DMB（数字多媒体广播）接收装置的装置和方法，以提高其中导频 信号不被使用。 信道估计器（520）将信道估计为具有从标准信号产生部分接收到的参考信号的符号单元（550）。 信道滤波部分（530）去除假想信道值的噪声。 信道均衡部分（540）通过使用估计信道值来均衡信道。 信道估计器通过参考信号估计接收帧的PRS（相位参考符号）。
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公开(公告)号：KR1020080112072A
公开(公告)日：2008-12-24
申请号：KR1020070108780
申请日：2007-10-29
Applicant: 한국전자통신연구원
CPC classification number: H04H60/07 , H04H20/67 , H04N21/23602 , H04N21/23614
Abstract: A method for multiplexing frame of digital broadcasting signal, apparatus thereof, and transmission apparatus are provided to fit transmission synchronization of a plurality of transmission frames including a service stream about an identical service without a separate field. An apparatus for multiplexing frame of digital broadcasting signal comprises a first buffer(611), a second buffer(612), a time comparison processing unit(630), a first frame generator(651), a second frame generator(652), and a time stamp generator(660). The first buffer stores a first service stream received from outside. The second buffer stores a second service stream received from outside. The time comparison processing unit compares a first service time data about the first service stream with a second service time data about the second service stream. The first frame generator outputs a first frame including the first service stream outputted in the first buffer. The second frame generator outputs a second frame including the second service stream outputted in the second buffer. The time stamp generator generates a first transmission time data comprised in a time stamp field of the first frame and a second transmission time data comprised in a time stamp field of the second frame.
Abstract translation: 提供数字广播信号的帧复用方法及其发送装置，以适应多个传输帧的传输同步，所述多个传输帧包括关于相同服务的服务流，而不需要单独的字段。 一种用于复用数字广播信号帧的装置包括第一缓冲器（611），第二缓冲器（612），时间比较处理单元（630），第一帧发生器（651），第二帧发生器（652）和 时间戳发生器（660）。 第一缓冲器存储从外部接收的第一服务流。 第二缓冲器存储从外部接收的第二服务流。 时间比较处理单元将关于第一服务流的第一服务时间数据与关于第二服务流的第二服务时间数据进行比较。 第一帧发生器输出包括在第一缓冲器中输出的第一服务流的第一帧。 第二帧发生器输出包括在第二缓冲器中输出的第二服务流的第二帧。 时间戳发生器产生包括在第一帧的时间戳字段中的第一传输时间数据和包括在第二帧的时间戳字段中的第二传输时间数据。
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