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公开(公告)号：KR101334370B1
公开(公告)日：2013-11-29
申请号：KR1020090084220
申请日：2009-09-07
Applicant: 한국전자통신연구원
IPC: H04N7/12 , H04N21/236 , H04N21/238 , H04L29/06
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: 본 발명은, 디지털 방송을 위한 전송 시스템에서 전송 프레임의 앞부분에 프레임 헤더 정보를 추가하여 시간적으로 서로 다른 전송 프레임에 서로 다른 전송모드, 변조 레벨, 계층 변조, 에러 정정 부호 등을 정할 수 있는 디지털 방송 신호의 전송 방법, 전송 장치, 수신 방법, 수신 장치 및 이의 전송 프레임 구조에 관한 것이다.
전송 프레임 구조는, 전송 프레임의 다중화 정보를 포함하는 프레임 헤더; 및 상기 전송 프레임이 제공하는 서비스에 대한 데이터 정보를 포함하는 프레임 바디를 포함한다. 또한, 상기 프레임 헤더는, 상기 전송 프레임의 시작 위치를 추출하기 위한 동기 신호 정보를 포함하는 프레임 동기신호부; 및 상기 전송 프레임이 포함하고 있는 데이터의 다중화 정보―상기 전송 프레임이 포함하고 있는 데이터의 전송 모드, 변조 레벨, 계층 변조, 에러 정정 부호의 정보―를 포함하는 프레임 정보부를 포함할 수 있다.
디지털 방송, 전송 프레임, 전송 모드-
公开(公告)号：KR1020130096688A
公开(公告)日：2013-08-30
申请号：KR1020130093840
申请日：2013-08-07
Applicant: 한국전자통신연구원
IPC: H04N19/00 , H04N21/234 , H04N7/015
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: PURPOSE: A transmission method, transmission apparatus, reception method, and reception apparatus for a digital broadcasting signal are provided to divide a stream into multiple layers according to the properties of the stream and independently process the layers. CONSTITUTION: A transmission method for a digital broadcasting signal comprises steps of: dividing a unit stream into multiple layers according to the properties of the stream (S104); encoding and mapping the divided layers (S105, S106); and dynamically assigning the resources of the layers based on the number of symbols of the layers (S107, S108). [Reference numerals] (AA) Start; (BB) End; (S101) Input multiple transmission streams; (S102) Multiplex in the type of a unit stream; (S103) Encode for error correction; (S104) Divide the unit stream into multiple layers; (S105) Encode the divided layers; (S106) Map the divided layers using a predetermined method; (S107) Determine the bandwidth of each layer based on the number of symbol of each layer; (S108) Assign frequency domain; (S109) Perform frequency interleaving to each layer; (S110) Perform inverse fast Fourier transform
Abstract translation: 目的：提供一种用于数字广播信号的传输方法，传输装置，接收方法和接收装置，以根据流的属性将流划分成多个层，并独立地处理这些层。 构成：数字广播信号的传输方法包括以下步骤：根据流的属性将单元流划分成多个层（S104）; 编码和映射划分的层（S105，S106）; 并且基于层的符号的数量动态分配层的资源（S107，S108）。 （附图标记）（AA）开始; （BB）结束; （S101）输入多个传输流; （S102）单位流类型中的多路复用; （S103）编码纠错; （S104）将单位流划分为多层; （S105）对划分的层编码; （S106）使用预定方法映射分割图层; （S107）根据每一层的符号数确定每层的带宽; （S108）分配频域; （S109）对各层进行频率交织; （S110）进行快速傅立叶逆变换
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公开(公告)号：KR101282538B1
公开(公告)日：2013-07-04
申请号：KR1020090127334
申请日：2009-12-18
Applicant: 한국전자통신연구원
Inventor： 임형수
CPC classification number: H04B7/15542 , H04B7/15535
Abstract: 하향신호를 이용하여 채널이득을 추정하는 채널이득 추정부, 및 상기 추정된 채널 이득을 고려하여 레인징 상향신호를 왜곡하는 신호 왜곡부를 포함하는 레인징 상향신호 사전 왜곡 시스템 및 방법이 개시된다.
채널이득, 추정, 레인징 상향신호, 사전 왜곡(pre-distortion)-
公开(公告)号：KR1020130055264A
公开(公告)日：2013-05-28
申请号：KR1020110120921
申请日：2011-11-18
Applicant: 한국전자통신연구원
IPC: H04N7/015
CPC classification number: H04H20/65 , H04B10/556 , H04H40/27 , H04L27/04 , H04N21/4348 , H04N21/4355 , H04N21/4382
Abstract: PURPOSE: A device for transmitting and receiving additional data by using training signals and a method thereof are provided to transmit the additional data by using the training signals while maintaining inverse compatibility with ATSC(Advanced Television System Committee). CONSTITUTION: An additional data transmitting/receiving device includes a training signal assignment unit(310), an additional data insertion unit(320), and a signal transmission unit(330). The training signal assignment unit assigns training signals to broadcast signals. The additional data insertion unit inserts additional data into the training signals. The signal transmission unit transmits the training signals which the additional data is inserted. [Reference numerals] (310) Signal assignment unit; (320) Additional data insertion unit; (330) Signal transmission unit
Abstract translation: 目的：提供一种通过使用训练信号发送和接收附加数据的装置及其方法，用于通过使用训练信号来发送附加数据，同时维持与ATSC（高级电视系统委员会）的反相容性。 构成：附加数据发送/接收装置包括训练信号分配单元（310），附加数据插入单元（320）和信号发送单元（330）。 训练信号分配单元将训练信号分配给广播信号。 附加数据插入单元将附加数据插入到训练信号中。 信号发送单元发送附加数据插入的训练信号。 （附图标记）（310）信号分配单元; （320）附加数据插入单元; （330）信号传输单元
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公开(公告)号：KR1020120132454A
公开(公告)日：2012-12-05
申请号：KR1020120119271
申请日：2012-10-25
Applicant: 한국전자통신연구원
CPC classification number: H04N5/4401 , H04N7/122 , H04N7/52
Abstract: PURPOSE: A broadcast signal receiving method and a device thereof are provided to supply separate transmission types according to a frequency domain and a time domain. CONSTITUTION: An A/D converting unit(510) receives a transmission frame. The A/D converting unit converts the received transmission frame into a distal signal. The transmission frame includes a plurality of transmission data. The transmission frame includes a frame header including information about the transmission data. A frame header determining unit(520) decodes frame header information from the transmission frame. A transmission data selecting unit outputs one of the transmission data based on the frame header information. [Reference numerals] (510) A/D converting unit; (520) Frame header determining unit; (530) Fourier converting unit; (540) Service selecting unit; (AA) Transmitting signal; (BB) Digital demodulation unit 1; (CC) Digital demodulation unit 2; (DD) Digital demodulation unit 3; (EE) Channel decoding unit 1; (FF) Channel decoding unit 2; (GG) Channel decoding unit 3; (HH) Service 1; (II) Service 2; (JJ) Service 3
Abstract translation: 目的：提供广播信号接收方法及其装置，以根据频域和时域提供单独的传输类型。 构成：A / D转换单元（510）接收传输帧。 A / D转换单元将接收到的传输帧转换为远端信号。 发送帧包括多个发送数据。 传输帧包括包括关于传输数据的信息的帧报头。 帧头确定单元（520）从传输帧解码帧头信息。 发送数据选择单元基于帧头信息输出发送数据之一。 （附图标记）（510）A / D转换单元; （520）帧头确定单元; （530）傅里叶变换单元; （540）服务选择单元; （AA）发射信号; （BB）数字解调单元1; （CC）数字解调单元2; （DD）数字解调单元3; （EE）信道解码单元1; （FF）信道解码单元2; （GG）信道解码单元3; （HH）服务1; （二）服务2; （JJ）服务3
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Patent Agency Ranking
公开(公告)号：KR1020110037821A
公开(公告)日：2011-04-13
申请号：KR1020100049581
申请日：2010-05-27
Applicant: 한국전자통신연구원
Abstract: PURPOSE: An apparatus of repeating for transmitting a terrestrial DTV broadcasting signal and additional data and a method thereof are provided to relay additional data inserted into a DTV broadcasting signal. CONSTITUTION: An additional data extracting unit(508) extracts additional data from an output signal of an equalization unit, and outputs the extracted data. An adder(511) combines the DTV signal outputted from the equalization unit with the output of the additional data processing unit. A transmission processing unit modulates the added output, and converts the band of the modulated signal into an RF(Radio Frequency) band. The transmission processing unit amplifies the transmission poser, and amplifies the transmission power. The transmission processing unit transmits the amplified signal through a transmission antenna.
Abstract translation: 目的：提供一种用于发送地面DTV广播信号和附加数据的重复装置及其方法，用于中继插入到DTV广播信号中的附加数据。 构成：附加数据提取单元（508）从均衡单元的输出信号中提取附加数据，并输出提取的数据。 加法器（511）将从均衡单元输出的DTV信号与附加数据处理单元的输出相结合。 传输处理单元调制附加的输出，并将调制信号的频带转换成RF（射频）频带。 发送处理单元放大发送端，并放大发送功率。 发送处理单元通过发送天线发送放大的信号。
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公开(公告)号：KR1020100066371A
公开(公告)日：2010-06-17
申请号：KR1020090117389
申请日：2009-11-30
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A transmission/reception method of a signal and an apparatus thereof for handover in a broadcasting network for minimizing an effect on broadcasting service quality are provided to supply a seamless mobile broadcasting service by automatically performing handoff of a broadcasting frequency channel. CONSTITUTION: A baseband broadcasting signal generator(310) generates a baseband signal from transmitted broadcast data. A transmitter identifying signal column generator(320) generates the identification signal of the transmitter. A first transmission unit combines the broadcast signal transformed to the baseband signal and identification signal. A second transmission unit modulates the identification signal.
Abstract translation: 目的：提供一种信号的发送/接收方法及其在广播网络中的切换用于使对广播服务质量的影响最小化的方法，以通过自动执行广播频道的切换来提供无缝移动广播服务。 构成：基带广播信号发生器（310）从发送的广播数据生成基带信号。 发射机识别信号列发生器（320）产生发射机的识别信号。 第一发送单元将变换后的广播信号与基带信号和识别信号进行合成。 第二传输单元调制识别信号。
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公开(公告)号：KR100930718B1
公开(公告)日：2009-12-09
申请号：KR1020070108349
申请日：2007-10-26
Applicant: 한국전자통신연구원
Abstract: In a digital broadcasting signal transmission system, a transmission frame includes a frame body and a frame header, and the frame body is divided into a plurality of sub-bands in the frequency domain and is divided into a plurality of symbols in the time domain. The frame header is provided in the former part of the transmission frame and is transmitted with a signal in the time domain. The frame body includes a plurality of services, and the services respectively receive at least one sub-band and at least one symbol. The frame header includes information on the plurality of services, and information on the plurality of services includes information on the sub-band and the symbol to which the services are allocated, information on channel encoding levels of the services, and information on digital modulation levels of the services.
Abstract translation: 在数字广播信号传输系统中，传输帧包括帧体和帧头，并且帧体在频域中被分成多个子带，并在时域中被分成多个符号。 帧头被提供在传输帧的前面部分中，并且在时域中与信号一起传输。 帧体包括多个服务，并且这些服务分别接收至少一个子带和至少一个符号。 帧头包括关于多个服务的信息，并且关于多个服务的信息包括关于分配了服务的子带和符号的信息，关于服务的信道编码电平的信息以及关于数字调制电平的信息 的服务。
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公开(公告)号：KR1020090096399A
公开(公告)日：2009-09-10
申请号：KR1020090078805
申请日：2009-08-25
Applicant: 한국전자통신연구원
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 , H04L1/0023
Abstract: A transmitting method, a transmitting apparatus, a receiving method and a receiving apparatus of a digital broadcasting signal are provided to divide a stream into a plurality of layers according to a characteristic of the stream, process each layer independently and dynamically allocate a frequency based on the processed signal. A single stream is divided by a predetermined stream unit. Importance of the divided stream unit is grasped. According to the grasped importance, the divided stream unit is allocated to a plurality of layers(S104). Encoding and mapping about a separate layer are performed(S105,S106). Resources about the separate layer are dynamically allocated based on a symbol number about the separate layer(S107,S108).
Abstract translation: 提供一种数字广播信号的发送方法，发送装置，接收方法和接收装置，以根据流的特性将流划分成多个层，独立地处理每一层，并基于 处理后的信号。 单个流被预定的流单元划分。 掌握分流单元的重要性。 根据所掌握的重要性，将划分的流单元分配给多个层（S104）。 执行关于单独层的编码和映射（S105，S106）。 关于单独层的资源基于关于单独层的符号数量动态地分配（S107，S108）。
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公开(公告)号：KR100874016B1
公开(公告)日：2008-12-17
申请号：KR1020070065382
申请日：2007-06-29
Applicant: 한국전자통신연구원
IPC: H04L27/34
CPC classification number: H04L27/183 , H04L5/005 , H04L27/2601 , H04L27/3483 , H04L27/3488
Abstract: An apparatus and a method for hierarchical modulation and an apparatus and a method for hierarchical demodulation are provided to minimize the degradation of the reception performance due to the judgment error of a first hierarchical bit stream in a receiving unit. A first hierarchical symbol stream is generated by mapping a first hierarchical bit stream on a bit position of a first constellation according to the first modulation scheme(S210). A second hierarchical symbol stream is generated by mapping a second hierarchical bit stream on a bit position of a second constellation according to the second modulation scheme(S220). Each symbol of the second hierarchical symbol stream is phase-rotated(S230). The hierarchical modulation symbol stream is generated from the first hierarchical symbol stream and the second hierarchical symbol stream which is phase-rotated(S260).
Abstract translation: 提供了一种用于分层调制的装置和方法，以及用于分层解调的装置和方法，用于最小化由于接收单元中的第一分级比特流的判断误差而导致的接收性能的劣化。 通过根据第一调制方案映射第一星座图的比特位置上的第一分层比特流来生成第一分层符号流（S210）。 通过根据第二调制方案在第二星座图的比特位置映射第二分层比特流来生成第二分层符号流（S220）。 第二分层符号流的每个符号被相位旋转（S230）。 从第一分层符号流和相位旋转的第二分层符号流生成分级调制符号流（S260）。
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