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公开(公告)号：KR100916318B1
公开(公告)日：2009-09-11
申请号：KR1020080032565
申请日：2008-04-08
Applicant: 한국전자통신연구원
IPC: H04L5/00 , H04N21/2381 , H04L1/18
CPC classification number: H04N21/2381 , H04N21/434 , H04N21/4382
Abstract: An apparatus and a method of a transforming frame for digital multimedia broadcasting are provided to output ETI frame to ETI network by generating ETI(Ensemble Transport Interface) frame a radio band broadcasting signal. In an apparatus and a method of a transforming frame for digital multimedia broadcasting, an RF signal receiving part(710) receives a RF broadcast signal. A base band signal processing unit(720) converts the frequency of the RF broadcasting signal from an RF band to the base band. An MSC(Main Service Channel) analysis section(740) decodes a plurality of sub channels included in an MCI(Multiplex Configuration Information) as FEC. A stream sub channel allocation(770) assigns a plurality of streams to a plurality of stream sub channels. An FIC data generating unit(750) produces an FIC data field of the MST(Main STream), and an STC(STream Characterization) generating unit(760) produces a plurality of SSTC(Sub STream Characterization) fields by using MCI.
Abstract translation: 提供了一种用于数字多媒体广播的变换帧的装置和方法，用于通过产生无线电频带广播信号的ETI（集合传输接口）帧向ETI网络输出ETI帧。 在数字多媒体广播变换帧的装置和方法中，RF信号接收部（710）接收RF广播信号。 基带信号处理单元（720）将RF广播信号的频率从RF频带转换为基带。 MSC（主业务信道）分析部（740）将包含在MCI（Multiplex Configuration Information）中的多个子信道解码为FEC。 流子信道分配（770）将多个流分配给多个流子信道。 FIC数据产生单元（750）产生MST（主流）的FIC数据字段，STC（流表征）生成单元通过使用MCI产生多个SSTC（SubStream Characterization）字段。
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公开(公告)号：KR1020090066183A
公开(公告)日：2009-06-23
申请号：KR1020080025002
申请日：2008-03-18
Applicant: 한국전자통신연구원
IPC: H04N19/30
CPC classification number: H04N19/30 , H04N19/132 , H04N19/176 , H04N19/80
Abstract: A method and a device for processing a boundary with peripheral block information in a scalable imaging encoder/decoder are provided to offer previously restored information of an upper layer as boundary information, which is needed for enlarging a block corresponding to a lower layer through down-sampling, when a small lower layer is encoded and decoded. A macroblock mode determiner(120) determines a macroblock mode of a lower layer when a scalable image is encoded/decoded. A boundary pixel information generator(130) generates boundary pixel information by performing down-sampling according to an up-sampling ratio with protected information of a block close to the macroblock of an upper layer when the macroblock mode of the lower layer is an internal mode. An up-sampler(140) performs up-sampling of the lower layer based on the boundary pixel information.
Abstract translation: 提供了一种用于在可缩放成像编码器/解码器中处理具有外围块信息的边界的方法和装置，以提供先前恢复的上层信息作为边界信息，该边界信息是通过下行扩展来放大对应于较低层的块所需要的， 当较小的下层被编码和解码时，进行采样。 当可缩放图像被编码/解码时，宏块模式确定器（120）确定下层的宏块模式。 边界像素信息生成器（130）当下层的宏块模式为内部模式时，通过以与上层的宏块接近的块的受保护信息的上采样率进行下采样来生成边界像素信息 。 上取样器（140）基于边界像素信息执行下层的上采样。
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公开(公告)号：KR1020090063797A
公开(公告)日：2009-06-18
申请号：KR1020070131295
申请日：2007-12-14
Applicant: 한국전자통신연구원
IPC: H04N21/236
CPC classification number: H04N21/2368 , H04H2201/11 , H04N21/2362 , H04N21/242
Abstract: A frame multiplexing method and a device of digital multimedia broadcasting are provided to enable high-efficiency transmission as being compatible with a general digital multimedia broadcasting signal, thereby variously providing high-quality video services and services that need high-efficiency transmission. Stream receivers(410) receive plural streams. The stream receivers output information on plural services individually restored from the streams. An input stream manager(420) prepares a first list by using the information on the services. A mapping unit(430) classifies the services into a service of a first ensemble and a service of a second ensemble by using the first list. An output stream manager(440) prepares a second list. The second list includes information on the first ensemble and the second ensemble. A first frame generator(460) receives at least one stream that restores the service of the first ensemble by using the second list. The first frame generator generates a first frame corresponding to the first ensemble.
Abstract translation: 提供了一种数字多媒体广播的帧多路复用方法和装置，以实现与一般数字多媒体广播信号兼容的高效率传输，从而不同地提供需要高效率传输的高质量视频服务和服务。 流接收器（410）接收多个流。 流接收器输出从流单独恢复的多个服务的信息。 输入流管理器（420）通过使用关于服务的信息来准备第一列表。 映射单元（430）通过使用第一列表将服务分类为第一集合的服务和第二集合的服务。 输出流管理器（440）准备第二列表。 第二个列表包括关于第一集合和第二集合的信息。 第一帧发生器（460）通过使用第二列表接收恢复第一集合的服务的至少一个流。 第一帧发生器产生对应于第一集合的第一帧。
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公开(公告)号：KR1020090061425A
公开(公告)日：2009-06-16
申请号：KR1020070128433
申请日：2007-12-11
Applicant: 한국전자통신연구원
IPC: H04B7/14
CPC classification number: H04B7/155 , H04W56/0035
Abstract: A repeater, a signal processing method thereof and a frequency converting method are provided to minimize the frequency error between repeater transmitting signals by self-offsetting the frequency error of a local oscillator. A frequency generator(230) generates a frequency for an intermediate frequency conversion and a frequency for frequency up-conversion. A down-converter(240) converts the first wireless frequency of a received signal into the first intermediate frequency. A digital signal processor(250) produces an intermediate offset frequency for offsetting a local oscillating frequency error from the frequency offset of the received signal. An up-converter(260) converts the second intermediate frequency into the second wireless frequency.
Abstract translation: 提供一种中继器，其信号处理方法和频率转换方法，以通过自偏移本地振荡器的频率误差来最小化中继器发送信号之间的频率误差。 频率发生器（230）产生用于中频变频的频率和用于上变频的频率。 下变换器（240）将接收信号的第一无线频率转换为第一中频。 数字信号处理器（250）产生用于从接收信号的频率偏移中偏移本地振荡频率误差的中间偏移频率。 升压转换器（260）将第二中频转换成第二无线频率。
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公开(公告)号：KR1020090059431A
公开(公告)日：2009-06-11
申请号：KR1020070126291
申请日：2007-12-06
Applicant: 한국전자통신연구원
CPC classification number: H04B7/086 , H04L1/02 , H04L27/2647 , H04N5/44
Abstract: An adaptive beam-forming apparatus and a method thereof are provided to improve the reception performance of a DMB(Digital Multimedia Broadcasting) system. Plural radio frequency tuners receive the same DMG signal every frame(S100), and an adaptive beam-forming unit estimates the starting location of a phase reference signal(S200). The adaptive beam-forming unit sets up a weight for forming a beam in the direction of a receiving signal by using a phase reference signal(S300), and forms a main beam in the direction of the receiving signal by using the phase reference signal and the weight(S400).
Abstract translation: 提供自适应波束形成装置及其方法以提高DMB（数字多媒体广播）系统的接收性能。 多个射频调谐器每帧接收相同的DMG信号（S100），自适应波束形成单元估计相位参考信号的起始位置（S200）。 自适应波束形成单元通过使用相位参考信号（S300）设置在接收信号的方向上形成波束的权重，并通过使用相位参考信号在接收信号的方向上形成主波束，并且 重量（S400）。
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Patent Agency Ranking
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：KR100883348B1
公开(公告)日：2009-02-11
申请号：KR1020070070190
申请日：2007-07-12
Applicant: 한국전자통신연구원 , 충북대학교 산학협력단
IPC: H04L27/26
Abstract: 본 발명은 계층변조 기반 수신 시스템에서의 채널 추정 장치 및 그 방법에 관한 것으로, 더욱 상세하게는 주파수 영역의 신호와 선순위 송신신호 및 후순위 송신신호를 이용하여 채널을 추정하되, 상기 선순위 송신신호와 후순위 송신신호에 각각 가중치를 부여하여 채널을 추정함으로써, 훈련신호(훈련심볼) 없이 채널을 추정하기 위한, 계층변조 기반 수신 시스템에서의 채널 추정 장치 및 그 방법에 관한 것으로서, 계층변조 기반 수신 시스템에서의 채널 추정 장치에 있어서, 수신신호를 주파수 영역의 신호로 변환하기 위한 복조 수단; 상기 복조 수단에서 복조한 주파수 영역의 신호와 이전에 추정된 추정채널을 이용하여 채널 등화를 수행하기 위한 채널 등화 수단; 상기 채널 등화 수단에서 채널 등화된 신호로부터 선순위 송신신호 및 후순위 송신신호를 추정하기 위한 송신신호 추정 수단; 및 상기 복조 수단에서 복조한 주파수 영역의 신호와 상기 송신신호 추정 수단에서 추정한 선순위 송신신호 및 후순위 송신신호를 이용하여 채널을 추정하되, 상기 송신신호 추정 수단에서 추정한 선순위 송신신호 및 후순위 송신신호에 각각 가중치를 부여하여 채널을 추정하기 위한 채널 추정 수단을 포함한다.
지상파 DMB, 수신장치, 채널 추정, 채널 등화, 디지털 방송, 계층변조-
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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公开(公告)号：KR1020080112063A
公开(公告)日：2008-12-24
申请号：KR1020070084848
申请日：2007-08-23
Applicant: 한국전자통신연구원
Abstract: An apparatus for receiving hierarchical modulation signal capable of efficiently decoding added signal and method thereof are provided to reduce power consumption of a receiver by reducing complexity of the receiver. A method for receiving hierarchical modulation signal capable of efficiently decoding added signal comprises the following steps: a step for receiving a hierarchical modulation signal having a plurality of layers(S201); a step for generating a first hierarchical modulation signal by differentially demodulating the hierarchical modulation signal(S203); a step for generating a first hierarchical estimated signal by estimating the first hierarchical modulation signal(S209); a step for the first hierarchical estimated signal by modulating the first hierarchical estimated signal(S211); and a step for extracting a second hierarchical modulation signal in the hierarchical modulation signal based on the first hierarchical estimated signal(S213).
Abstract translation: 提供一种用于接收能够有效地解码附加信号的分级调制信号及其方法的装置，以通过降低接收机的复杂度来降低接收机的功耗。 一种用于接收能够有效地解码附加信号的分级调制信号的方法，包括以下步骤：接收具有多个层的分级调制信号的步骤（S201）; 通过差分解调分层调制信号来生成第一分层调制信号的步骤（S203）; 通过估计第一分级调制信号产生第一分层估计信号的步骤（S209）; 通过调制第一分级估计信号来进行第一分级估计信号的步骤（S211）; 以及基于第一分级估计信号提取分级调制信号中的第二分层调制信号的步骤（S213）。
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公开(公告)号：KR1020080106060A
公开(公告)日：2008-12-04
申请号：KR1020080050258
申请日：2008-05-29
Applicant: 한국전자통신연구원
IPC: H04N7/12
CPC classification number: H04H20/42 , H04H20/72 , H04H40/18 , H04H60/07 , H04L1/0003 , H04L1/0017 , H04L1/0041 , H04L1/0065 , H04L1/0071 , H04L1/04 , H04L2001/0093 , H04L2001/0098 , H04N21/2343 , H04N21/234327
Abstract: A transmission method of a digital broadcasting signal, a transmitting device, a receiving method and a receiving device are provided to separate a stream into a plurality of layers according to characteristics of the streams and to allocate frequency dynamically based on processed signal after individually processing each layer. A single stream separates a plurality of layers according to the property of stream(130). The coding and mapping about the discrete layer are executed(150). The frequency about the discrete layer based on the number of symbols about the discrete layer is dynamically assigned(160).
Abstract translation: 提供数字广播信号的发送方法，发送装置，接收方式和接收装置，以根据流的特性将流分离成多个层，并且在单独处理每个流之后基于处理的信号动态地分配频率 层。 单个流根据流（130）的性质分离多个层。 执行关于离散层的编码和映射（150）。 基于关于离散层的符号数量的离散层的频率被动态分配（160）。
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