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公开(公告)号：KR1020130066088A
公开(公告)日：2013-06-20
申请号：KR1020110132769
申请日：2011-12-12
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04L27/2692
Abstract: PURPOSE: A channel-wise modulation scheme selection device and a method thereof in an OFDM(Orthogonal Frequency Division Multiplexing) system are provided to control a data transmission rate of data. CONSTITUTION: A receiving terminal (200) includes a preamble signal reception unit (210), a channel state information measurement unit(220), a signal to noise ratio estimation unit(230), and a feedback processing unit(240). The preamble signal reception unit receives a preamble signal which is periodically transmitted to a transmitting terminal. The channel state information measurement unit measures channel state information from the received preamble signal. The signal to noise ratio estimation unit estimates a signal to noise ratio from the measured channel state information. The feedback processing unit feedback-processes the estimated signal to noise ratio to the transmitting terminal. [Reference numerals] (210) Preamble signal reception unit; (220) Channel state information measurement unit; (230) Signal to noise ratio estimation unit; (240) Feedback processing unit
Abstract translation: 目的：提供OFDM（正交频分复用）系统中的频道调制方案选择装置及其方法，以控制数据的数据传输速率。 构成：接收终端（200）具有前导码信号接收部（210），信道状态信息测定部（220），信噪比推定部（230）以及反馈处理部（240）。 前导码信号接收单元接收周期性地发送到发送终端的前导码信号。 信道状态信息测量单元从接收到的前导信号测量信道状态信息。 信噪比估计单元从测量的信道状态信息估计信噪比。 反馈处理单元对发送终端反馈处理估计的信噪比。 （附图标记）（210）前导码信号接收单元; （220）信道状态信息测量单元; （230）信噪比估计单元; （240）反馈处理单元
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公开(公告)号：KR1020090061853A
公开(公告)日：2009-06-17
申请号：KR1020070128826
申请日：2007-12-12
Applicant: 한국전자통신연구원
IPC: H03M13/41
CPC classification number: H03M13/4169 , H03M13/43 , H03M13/6522
Abstract: A viterbi decoder applied to a cable modem and a decoding method thereof are provided to improve performance of the viterbi decoder by reducing complexity of calculating an Euclidean distance in a branch metric calculation unit. A BMC(Branch Metric Calculation)(110) calculates an absolute distance with each reference coordinate determining value based on an input signal and selects the minimum branch metric with the minimum absolute distance. The branch metric calculation unit includes a reference coordinate table(210), an absolute distance calculation unit(220), the minimum branch metric selecting unit, and a branch metric outputting unit(250). A path selecting unit produces the accumulated path metric based on the minimum branch metric, produces the minimum path metric among the accumulated path metric, and confirms the state information of the shortest path. A trace back unit tracks the state information of the shortest path and decodes and outputs the state information of the shortest path.
Abstract translation: 提供应用于电缆调制解调器的维特比解码器及其解码方法，以通过降低在分支度量计算单元中计算欧几里得距离的复杂度来提高维特比解码器的性能。 BMC（分公制计算）（110）基于输入信号计算与各参考坐标确定值的绝对距离，并选择具有最小绝对距离的最小分支度量。 分支度量计算单元包括参考坐标表（210），绝对距离计算单元（220），最小分支量度选择单元和分支量度输出单元（250）。 路径选择单元基于最小分支度量产生累积路径度量，产生累积路径度量中的最小路径度量，并确认最短路径的状态信息。 跟踪单元跟踪最短路径的状态信息并解码并输出最短路径的状态信息。
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公开(公告)号：KR1020150064595A
公开(公告)日：2015-06-11
申请号：KR1020130149474
申请日：2013-12-03
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04L27/2613 , H04L27/2607 , H04L27/2627 , H04L27/2646
Abstract: OFDM(Orthogonal Frequency Division Multiplexing) 무선통신시스템에서, 데이터송신이후에, 리턴경로를통하여수신장치로부터경로지연정보를수신하면, 경로지연정보에포함된지연값을토대로, 송신되는신호에포함되는 CP(cyclic prefix)의길이를조절한다.
Abstract translation: OFDM（正交频分复用）无线通信系统技术领域本发明涉及在发送数据之后通过来自接收机的返回路径接收路径延迟信息的OFDM（正交频分复用）无线通信系统，并且基于路径延迟信息CP（循环前缀 ）长度被相应地调整。
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公开(公告)号：KR1020150058982A
公开(公告)日：2015-05-29
申请号：KR1020130142390
申请日：2013-11-21
Applicant: 한국전자통신연구원
IPC: H04N21/25 , H04N21/234
CPC classification number: H04N21/2368
Abstract: 방송송신장치는하나의방송컨텐츠를음성신호와영상신호로분리하고, 음성신호와상기영상신호를각각부호화하여음성비트열과영상비트열을생성하며, 영상비트열과음성비트열을다중화한후에심볼로변조하는데, 부호화된음성비트열을심볼의일부비트에할당하고부호화된영상비트열을심볼의나머지비트에할당한다.
Abstract translation: 一种用于发送广播的装置：将广播的一个内容分成语音信号和图像信号; 通过对语音信号和图像信号进行编码来生成语音比特行和图像比特行; 并且在复用图像比特行和语音比特行之后将图像比特行和语音比特行转换成符号。 该装置将编码的话音位行分配给符号的某些位，并将编码的图像位行分配给符号的其余位。
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Patent Agency Ranking16.发明公开
公开(公告)号：KR1020130139680A
公开(公告)日：2013-12-23
申请号：KR1020120063347
申请日：2012-06-13
Applicant: 한국전자통신연구원
IPC: H04N21/235
CPC classification number: H04N7/167 , H04N2005/91364
Abstract: A digital broadcasting system generates a baseband header including scrambling control information which indicates whether to scramble a data field generated by processing a data stream to broadcast, and generates a baseband frame including the data field and the baseband header and processes and transmits the baseband frame. [Reference numerals] (1) Transmitting device;(11) Input processing unit;(111) Mode adaptation processing unit;(112) Baseband header generation unit;(113) Baseband frame generation unit;(12) Coding and modulation unit;(13) Frame generating unit;(14) Transmission signal generation unit
Abstract translation: 数字广播系统产生包括指示是否对通过处理数据流进行广播而生成的数据字段加扰的加扰控制信息的基带报头，并且生成包括数据字段和基带报头的基带帧，并处理并发送基带帧。 （1）发送装置;（11）输入处理部;（111）模式适应处理部;（112）基带标题生成部;（113）基带帧生成部;（12）编码和调制部; 13）帧生成单元;（14）发送信号生成单元
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17.发明公开
公开(公告)号：KR1020130119112A
公开(公告)日：2013-10-31
申请号：KR1020120042025
申请日：2012-04-23
Applicant: 한국전자통신연구원
IPC: H04N7/22
CPC classification number: H04N21/2385 , H04H20/06 , H04H60/41 , H04N21/2383 , H04N21/6118
Abstract: PURPOSE: A broadcasting program inserting method by detecting an available channel in a hybrid fiber coax network or an optical cable network and an apparatus thereof are provided to adaptively utilize an available channel, thereby inserting or combining a first broadcasting program such as a cable TV program into or with a second broadcasting program. CONSTITUTION: A channel power detector (310) detects an unused Radio Frequency (RF) broadcasting channel out of RF broadcasting channels which are used by an optical to electric converter which converts a first broadcasting program, which is an optical signal, into a first RF signal. A broadcasting reception interface (330) receives at least one second broadcasting program. A broadcasting modulator (320) generates a second RF signal by modulating the second broadcasting program using the unused RF broadcasting channel. A channel combiner (340) combines a broadcasting channel which is used for the first RF signal and the unused RF broadcasting channel. [Reference numerals] (310) Channel power detector; (320) Broadcasting modulator; (331) Terrestrial broadcasting receiver; (332) Satellite broadcasting receiver; (333) User producing contents receiver; (340) Channel combiner; (AA,BB) Antenna; (CC) Channel information; (DD,EE,FF) RF signal
Abstract translation: 目的：提供一种通过检测混合光纤同轴电缆网络或光缆网络中的可用信道的广播节目插入方法及其装置来自适应地利用可用信道，从而插入或组合诸如有线电视节目之类的第一广播节目 进入或与第二广播节目相关联。 构成：信道功率检测器（310）检测RF广播信道中未使用的射频（RF）广播信道，该广播信道由光电转换器使用，该转换器将作为光信号的第一广播节目转换成第一RF 信号。 广播接收接口（330）接收至少一个第二广播节目。 广播调制器（320）通过使用未使用的RF广播信道调制第二广播节目来产生第二RF信号。 信道组合器（340）组合用于第一RF信号的广播信道和未使用的RF广播信道。 （附图标记）（310）通道功率检测器; （320）广播调制器; （331）地面广播接收机; （332）卫星广播接收机; （333）用户制作内容接收者; （340）信道组合器; （AA，BB）天线; （CC）频道信息; （DD，EE，FF）RF信号
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公开(公告)号：KR1020130106235A
公开(公告)日：2013-09-27
申请号：KR1020120027981
申请日：2012-03-19
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A communication device for the deaf is provided to convert voices, finger language images, and letters into voices, finger language images, letters, and vibration. CONSTITUTION: A communication device for the deaf comprises a storage part (10), an information collection part (20), a change control part (30), and an information output part (40). The storage part stores an output voice, an output character, a finger language image, and vibration information corresponding to voice information, a character, and finger language information. The information collection part receives conversation information including voices, images, and letters. The change control part extracts finger language information and voice information and reads and changes information corresponding to an output media. The information output part outputs the result outputted from the information output part. [Reference numerals] (10) Storage part; (20) Information collection part; (22) Microphone; (24) Keyboard; (26) Camera; (30) Change control part; (40) Information output part; (42) Display part; (44) Speaker; (46) Vibration motor; (50) Medium selecting key; (60) Remote transceiver part; (70) Wire/wireless communication network
Abstract translation: 目的：提供聋哑通信设备，将语音，手指语言图像和字母转换成声音，手指语言图像，字母和振动。 构成：聋哑通信装置包括存储部分（10），信息收集部分（20），变化控制部分（30）和信息输出部分（40）。 存储部分存储对应于语音信息，字符和手指语言信息的输出语音，输出字符，手指语言图像和振动信息。 信息收集部分接收包括语音，图像和字母在内的对话信息。 改变控制部分提取手指语言信息和语音信息，并读取和改变对应于输出媒体的信息。 信息输出部输出从信息输出部输出的结果。 （附图标记）（10）存储部; （20）资料收集部分; （22）麦克风; （24）键盘; （26）相机; （30）变更控制部; （40）信息输出部分; （42）显示部分; （44）演讲人 （46）振动电机; （50）中选择键; （60）远程收发器部分; （70）有线/无线通信网络
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公开(公告)号：KR101272982B1
公开(公告)日：2013-06-10
申请号：KR1020090128075
申请日：2009-12-21
Applicant: 한국전자통신연구원
Inventor： 라상중
CPC classification number: H04N21/4384 , H04N21/6125 , H04N21/631 , H04N21/6371
Abstract: 채널 전환시 발생되는 공백 시간을 활용하는 아이피티비 셋탑박스가 개시된다. 본 아이피티비 셋탑박스는, 제1 채널에 대한 상기 전국 서비스용 방송 스트림이 수신되고 있는 상태에서, 제2 채널에 대한 채널 선택 신호가 수신되면 제2 채널에 대한 상기 전국 서비스용 방송 스트림을 수신하는 채널 전환 작업을 수행하도록 상기 네트워크 스위치로 채널 전환을 요청하고, 채널 전환 작업이 수행되는 동안 방송 스트림 수신부로부터 수신되는 지역 서비스용 방송 스트림을 디스플레이 장치로 전송한다. 이 같은 아이피티비 셋탑박스를 이용함으로써, 가입자는 채널 전환시 발생되는 공백 시간 동안 지역 방송 스트림을 시청할 수 있게 된다.
채널 전환, 공백 시간, 지역 방송 스트림, 아이피티비, IPTV-
公开(公告)号：KR101059607B1
公开(公告)日：2011-08-25
申请号：KR1020080130864
申请日：2008-12-22
Applicant: 한국전자통신연구원
Abstract: 본 발명은 전송 에러 정정 장치 및 방법에 관한 것으로, 특히 리드 솔로몬 부호를 사용하는 디지털 케이블 방송 시스템에서 MPEG-2 트랜스포트 스트림의 스터프 바이트(stuff byte)를 이용하여 최소한의 하드웨어 확장을 통해 다양한 에러정정능력을 갖는 전송 에러 정정 장치 및 방법에 관한 것이다.
리드 솔로몬, 디지털 케이블, MPEG-2 TS, 에러 정정, 오류 정정Abstract translation: 本发明是在使用Solomon码（填充字节）使用多种具有最小硬件扩展纠错的数字有线广播系统中的传输的纠错装置和一种方法，在传输流中的特定引线MPEG-2填充字节 更具体地说，涉及一种能够校正传输错误的传输错误校正设备和方法。
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