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公开(公告)号：KR102233175B1
公开(公告)日：2021-03-29
申请号：KR1020170001933
申请日：2017-01-05
Applicant: 한국전자통신연구원
Abstract: 영상식별을위한특징배우를결정방법이개시된다. 복수의영상들각각에출연하는출연배우목록을설정하는단계; 출연배우들을포함하는복수의부분집합들을생성하는단계; 복수의부분집합들중에서제1 영상을유일하게지시하는최종집합에속한출연배우를특징배우로결정하는단계를포함한다. 따라서, 적은정보만으로도영상식별이가능해질 수있다.
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公开(公告)号：KR1020140119858A
公开(公告)日：2014-10-13
申请号：KR1020130033050
申请日：2013-03-27
Applicant: 한국전자통신연구원
IPC: H04L12/70
CPC classification number: H04L45/02 , H04B7/15521 , H04L1/0076
Abstract: An information exchange apparatus of each node for sharing information between a plurality of nodes receives request information from an adjacent node and determines an information transmitting node based on information that each node holds and request information from the adjacent node. The information exchange apparatus of a node that is determined to be an information transmitting node generates candidate transmitting information by performing network coding of at least one information set of held information, determines one of the candidate transmitting information sets as transmitting information, and transmits the candidate transmitting information set to the adjacent node.
Abstract translation: 用于在多个节点之间共享信息的每个节点的信息交换装置从相邻节点接收请求信息，并且基于每个节点保存的信息并且从相邻节点请求信息来确定信息发送节点。 确定为信息发送节点的节点的信息交换装置通过执行至少一个保持信息的信息集的网络编码来生成候选发送信息，将候选发送信息集中的一个确定为发送信息，并发送候选 向相邻节点发送信息集。
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公开(公告)号：KR1020140074550A
公开(公告)日：2014-06-18
申请号：KR1020120142626
申请日：2012-12-10
Applicant: 한국전자통신연구원
Abstract: Disclosed are a system and a method for supporting real time broadcast contents search using a fingerprint, which provide easy search and filtering of real time broadcast contents. The method includes the steps of: registering fingerprints and metadata by each channel, which are extracted from a channel stream by the each channel; determining whether there is a fingerprint corresponding to requested real time stream contents on the basis of a real time contents search request received from a search service device; and transmitting the corresponding fingerprint to the search service device if there is a corresponding fingerprint. Accordingly, by using a double fingerprint DB interlocking structure in which a real time stream contents fingerprint DB is separated from a program contents fingerprint DB, the real time stream contents fingerprint DB is maintained with a small size. Thus, search and filtering of real time broadcast contents are possible by supporting update and search functions of a fingerprint DB in real time. Additionally, the size of a fingerprint DB is optimized according to an application and the present invention interlocks with an existing contents search and filtering system easily.
Abstract translation: 公开了一种用于支持使用指纹的实时广播内容搜索的系统和方法，其提供对实时广播内容的简单搜索和过滤。 该方法包括以下步骤：通过每个信道从信道流中提取的每个信道注册指纹和元数据; 基于从搜索服务设备接收的实时内容搜索请求，确定是否存在与所请求的实时流内容相对应的指纹; 以及如果存在相应的指纹，则将相应的指纹发送到所述搜索服务设备。 因此，通过使用实时流内容指纹DB与程序内容指纹DB分离的双指纹DB互锁结构，实时流内容指纹DB被维持在小尺寸。 因此，可以通过实时地支持指纹DB的更新和搜索功能来搜索和过滤实时广播内容。 此外，根据应用优化指纹DB的尺寸，并且本发明容易地与现有的内容搜索和过滤系统相互联系。
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公开(公告)号：KR1020140059929A
公开(公告)日：2014-05-19
申请号：KR1020120126312
申请日：2012-11-08
Applicant: 한국전자통신연구원
CPC classification number: H04L25/0204
Abstract: In a method of estimating a channel in a multicarrier system, a channel path is estimated if a signal is received through a multi-path channel. A channel is estimated based on the signal received from the estimated channel path. A compressive sensing-based channel estimate for repeatedly performing such path estimate and channel estimate is carried out.
Abstract translation: 在估计多载波系统中的信道的方法中，如果通过多径信道接收到信号，则估计信道路径。 基于从估计的信道路径接收的信号来估计信道。 执行用于重复执行这样的路径估计和信道估计的基于压缩感测的信道估计。
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Patent Agency Ranking
公开(公告)号：KR101383690B1
公开(公告)日：2014-04-09
申请号：KR1020080125432
申请日：2008-12-10
Applicant: 한국전자통신연구원
IPC: H04L9/30
CPC classification number: H04L9/0822 , H04L9/0825 , H04L9/0836 , H04L9/0891 , H04L12/185 , H04L63/065
Abstract: 본 발명은 안전한 멀티캐스트 통신을 위한 그룹키 관리 방법에 관한 것이다. 즉, 본 발명에서는 중국인 나머지 정리를 기반으로 사용자키를 생성하고 이를 이용하여 그룹키를 배포하는 방법을 사용하고, 대규모 사용자를 지원하기 위해 트리(tree) 형태로 수신자를 관리하는 기술을 통해 대규모 사용자를 지원하면서도 네트워크로 전송되는 메시지의 수를 최소화한다. 또한, 다수의 수신자가 안전하게 그룹키를 공유하고, 특히 수신자 그룹에 사용자의 가입이나 탈퇴에 따른 멤버쉽의 변화에도 적응하며, 그룹에 속하는 사용자들만이 올바른 그룹키를 가질 수 있도록 한다.
멀티캐스트, 노드, 트리, 그룹키, 갱신-
公开(公告)号：KR1020140028172A
公开(公告)日：2014-03-10
申请号：KR1020120075371
申请日：2012-07-11
Applicant: 한국전자통신연구원
CPC classification number: G10L19/018 , G06F17/30743 , G10L25/18 , G10L25/69
Abstract: Disclosed are a device and a method for measuring an audio quality using fingerprints and feeling feature information. The device for measuring an audio quality according to the present invention comprises a distortion signal generation unit for generating a plurality of distortion signals according to the predetermined distortion reference for an audio; an extraction unit for extracting fingerprints and feeling feature information corresponding to the audio and the distortion signals; a distortion degree measurement unit for measuring a fingerprint distance difference between the fingerprints corresponding to the audio and the fingerprints corresponding to the distortion signals and an AV distance difference between the feeling feature information corresponding to the audio and the feeling feature information corresponding to the distortion signals; a distortion function generation unit for generating a fingerprint distortion function and an AV distortion function based on the respective distributions corresponding to the fingerprint distance difference and the AV distance difference; and a search and measurement unit for extracting the fingerprints and the feeling feature information from an optional inquiry audio and comparing the extracted results with the fingerprint distortion function or the AV distortion function to measure an audio quality. [Reference numerals] (100) Distortion signal generation unit; (200) Extraction unit; (300) Distortion degree measurement unit; (400) Distortion function generation unit; (500) Search and measurement unit; (AA) Audio
Abstract translation: 公开了使用指纹和感觉特征信息来测量音频质量的装置和方法。 根据本发明的用于测量音频质量的装置包括：失真信号产生单元，用于根据音频的预定失真参考产生多个失真信号; 提取单元，用于提取与所述音频和所述失真信号相对应的指纹和感觉特征信息; 扭曲度测量单元，用于测量与音频对应的指纹与对应于失真信号的指纹之间的指纹距离差以及与音频对应的感觉特征信息与对应于失真信号的感觉特征信息之间的AV距离差 ; 失真函数生成单元，用于基于与指纹距离差和AV距离差对应的各个分布来生成指纹失真函数和AV失真函数; 以及搜索和测量单元，用于从可选择的查询音频中提取指纹和感觉特征信息，并将提取的结果与指纹失真功能或AV失真功能进行比较，以测量音频质量。 （附图标记）（100）失真信号生成单元; （200）提取单位; （300）失真度测量单位; （400）失真函数生成单元; （500）检索单位; （AA）音频
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公开(公告)号：KR1020130119781A
公开(公告)日：2013-11-01
申请号：KR1020120042845
申请日：2012-04-24
Applicant: 한국전자통신연구원
CPC classification number: G06F17/30799 , H04N21/4586
Abstract: The present invention is a video duplication detecting apparatus comprising: a frame structuring part for structuring temporally continuous frames by decoding inputted videos; a feature extracting part for extracting the features of a corresponding video from the frames structured by the frame structuring part and coding the extracted features; a database for storing the coded features of one or more videos; a feature matching part for determining duplication of videos according as a video having the same coded features as the videos coded by the feature extracting part is detected from the database; and a duplicated video removing part for removing the duplicated videos except one in case that the inputted videos are determined to be duplicated by the feature matching part. [Reference numerals] (110) Frame structuring part;(120) Feature extracting part;(130) Feature matching part;(150) Duplicated video removing part
Abstract translation: 本发明是一种视频复制检测装置，包括：帧结构部分，用于通过解码输入的视频来构造时间上连续的帧; 特征提取部分，用于从由所述帧结构化部分构成的帧中提取对应视频的特征，并对所提取的特征进行编码; 用于存储一个或多个视频的编码特征的数据库; 从数据库检测特征匹配部分，用于根据具有与由特征提取部分编码的视频相同的编码特征的视频来确定视频的重复; 以及复制的视频消除部分，用于在确定输入的视频被特征匹配部分复制的情况下，去除除了一个的重复视频。 （110）帧结构部分;（120）特征提取部分;（130）特征匹配部分;（150）重复的视频去除部分
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公开(公告)号：KR1020130109045A
公开(公告)日：2013-10-07
申请号：KR1020130030015
申请日：2013-03-20
Applicant: 한국전자통신연구원
IPC: H04W56/00
CPC classification number: H04W56/001 , H04W56/0035
Abstract: PURPOSE: A frequency synchronization method in a distributed network is provided to synchronize a carrier frequency of a node which enters a distributed network with a carrier frequency of the network which the node has entered by adjusting the carrier frequency of the node. CONSTITUTION: Preambles are received from a plurality of nodes which are adjacent to a node (S301). A carrier frequency offset of each node is estimated from the preambles (S302). The average of the estimated offsets is calculated (S304). An adjustment value of the carrier frequency of the whole adjacent nodes is calculated by using the average value (S308). A carrier frequency of the node is adjusted based on the adjustment value. [Reference numerals] (AA) No; (BB) Yes; (S301) Preamble reception; (S302) Frequency offset estimation for each neighboring node; (S303) Preamble reception number > R_th; (S304) Average frequency offset value {tilde over (f)}_i,m (k) calculation; (S305) {tilde over (f)}_i,m (k) calculation number (N_δ_i,m (k)) update; (S306) N_δ_n,l (k-1) and q_n,i (k-1) reception; (S307) Final frequency offset value ({circumflex over (f)}_i,m (k)) calculation; (S308) Carrier wave adjustment value (Δf_i (k)) calculation & adjustment; (S309) Carrier wave adjustment request value (q_i,n (k)) calculation; (S310) N_δ_i,n (k) and q_i,n (k) reception
Abstract translation: 目的：提供分布式网络中的频率同步方法，通过调整节点的载波频率，将进入分布式网络的节点的载波频率与节点已进入的网络的载波频率进行同步。 构成：从与节点相邻的多个节点接收前导码（S301）。 从前导码估计每个节点的载波频率偏移（S302）。 计算估计偏移的平均值（S304）。 通过使用平均值来计算整个相邻节点的载波频率的调整值（S308）。 基于调整值调整节点的载波频率。 （附图标记）（AA）否; （BB）是的; （S301）前导码接收; （S302）每个相邻节点的频率偏移估计; （S303）前导码接收号码> R_th; （S304）平均频率偏移值{（t）），（i），（k）计算; （S305）{tilde over（f）} _ i，m（k）计算号（N_δ_i，m（k））更新; （S306）N_δ_n，l（k-1）和q_n，i（k-1）接收; （S307）最终频率偏移值（{f（f）} _ i，m（k））计算; （S308）载波调整值（Δf_i（k））计算和调整; （S309）载波调整请求值（q_i，n（k））计算; （S310）N_δ_i，n（k）和q_i，n（k）接收
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公开(公告)号：KR101287628B1
公开(公告)日：2013-08-23
申请号：KR1020090113718
申请日：2009-11-24
Applicant: 한국전자통신연구원
IPC: G06F21/10 , H04N21/4623 , H04N21/262 , H04N21/4405
Abstract: 도메인 라이센스 발급 장치, 방법 및 이에 의한 디지털 콘텐츠 재생 장치 및 방법을 제시한다. 제시된 도메인 라이센스 발급 장치는 도메인 내에서 디지털 콘텐츠의 공유를 위한 도메인 키를 생성하는 도메인 키 관리부, 도메인 키를 포함하는 도메인 라이센스를 생성하는 도메인 라이센스 생성부, 및 도메인에 속하는 기기로부터의 도메인 라이센스 발급 요청에 따라 도메인 라이센스를 전송하는 도메인 라이센스 발급부를 포함한다. 제시된 디지털 콘텐츠 재생 장치는 도메인 라이센스 발급 장치로부터의 도메인 라이센스에서 도메인 키를 추출하고 디지털 콘텐츠에 대응되는 도메인 공유 정보를 생성하여 디지털 콘텐츠 및 도메인 공유 정보를 하나의 세트로 하는 도메인 공유된 디지털 콘텐츠를 생성하는 도메인 클라이언트, 도메인 키를 이용하여 도메인 공유된 디지털 콘텐츠의 디지털 콘텐츠를 복호화하는 DRM 클라이언트, 및 복호화된 디지털 콘텐츠를 재생하는 재생기를 포함한다. 기기나 콘텐츠에 적용된 DRM 기술에 관계없이 정해진 도메인 내에서 콘텐츠의 공유가 가능하기 때문에 정당한 사용자에게 편의성을 제공함으로써 사용자들에게 DRM에 대한 거부감을 줄여줌으로써 콘텐츠 이용을 활성화시킬 수 있는 효과가 있다.
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