公开(公告)号：KR100880893B1

公开(公告)日：2009-01-30

申请号：KR1020070093814

申请日：2007-09-14

Applicant: 한국전자통신연구원

Inventor： 이병탁 ,  이상현 ,  오승훈 ,  심재찬 ,  송호영 ,  김봉태

IPC: H04N21/226 ,  H04L12/18

CPC classification number: H04N7/17318 ,  H04N21/2625 ,  H04N21/26275 ,  H04N21/26616 ,  H04N21/4384 ,  H04N21/6405 ,  H04N21/64322

Abstract: An apparatus for rapidly changing a channel by using plural multicast in an IPTV network and a method thereof are provided to supply optimized multicast stream information to a user terminal after separately generating at least one multicast stream to a different delay time is applied, thereby rapidly changing a channel. A fast channel changing system comprises a headend, a channel server(120), a router(130) and a user terminal(140) on an IPTV network. The channel server comprises a multicast module(121) and a channel analyzing module(122). A different delay time value is applied to each original multicast stream to be broadcast by the multicast module. The multicast module generates a delay multicast stream. The channel analyzing module dynamically analyzes the generated delay multicast stream in real time.

Abstract translation: 提供了一种通过在IPTV网络中使用多个组播来快速改变频道的装置及其方法，其用于在将至少一个组播流分别生成到不同的延迟时间之后向用户终端提供优化的多播流信息，由此迅速改变 一个频道 快速频道切换系统包括IPTV网络上的头端，频道服务器（120），路由器（130）和用户终端（140）。 信道服务器包括多播模块（121）和信道分析模块（122）。 对于要由多播模块广播的每个原始多播流应用不同的延迟时间值。 组播模块生成延迟组播流。 信道分析模块实时动态分析生成的延迟组播流。

公开(公告)号：KR1020090009646A

公开(公告)日：2009-01-23

申请号：KR1020070073101

申请日：2007-07-20

Applicant: 한국전자통신연구원

Inventor： 오승훈 ,  박일균 ,  송호영 ,  김봉태 ,  윤심권 ,  심재찬

IPC: G06Q50/20 ,  G06Q50/30 ,  G09B5/14

CPC classification number: G06Q50/205 ,  G06Q50/30 ,  G09B5/14

Abstract: A control device, an education device, a learning apparatus, a control method, an educational method, and a learning method of a remote education system supporting a small group discussion service are provided for learners to perform the class of a small group debating type, thereby overcoming the limit of remote education and activating the class participation of the learners more. An input unit(221) receives small group participants selected by an educator among learners in remote education class. A small group control message generatior(222) produces a small group production message based on the list of the small group participants received the input unit. A small group control message transmitter(223) transmits the small group production message generated in the small group control message generator to the control device(210) of a remote education system. A control device comprises a small group control message receiver(211), a session information management unit(212), and a server session controller(213). According to a small group production request received from an education device(220), the establishment of a communications session among the learners is indicated. The session information management unit produces the session control information of the small group participants. The server session controller transmits the session control information generated in the session information management unit to the small group participants and indicates the establishment of the communications session among the small group participants. A learning device(230) establishes the communications session according to the session control information received from the control device, and exchanges the data of the small group participants through the communications session. The session information receiver receives the session control information of the small group participants selected by the educator among the learners in the remote education class from the control device of the remote education system.

Abstract translation: 提供了一种用于支持小组讨论服务的远程教育系统的控制装置，教育装置，学习装置，控制方法，教育方法和学习方法，用于学习者执行小组辩论类的类， 从而克服了远程教育的限制，激发了学员的阶级参与。 输入单元（221）接收远程教育课程中的学习者之间由教育者选择的小组参与者。 小组控制消息发生器（222）基于接收到输入单元的小组参与者的列表产生小组生成消息。 小组控制消息发送器（223）将在小组控制消息发生器中生成的小组生成消息发送到远程教育系统的控制设备（210）。 控制装置包括小组控制消息接收器（211），会话信息管理单元（212）和服务器会话控制器（213）。 根据从教育装置（220）收到的小组生产要求，指出了在学习者之间建立通信会话。 会话信息管理单元生成小组参与者的会话控制信息。 服务器会话控制器将在会话信息管理单元中生成的会话控制信息发送给小组参与者，并且指示小组参与者之间的通信会话的建立。 学习装置（230）根据从控制装置接收到的会话控制信息建立通信会话，并通过通信会话交换小组参与者的数据。 会话信息接收器从远程教育系统的控制装置接收远程教育课程中的学习者中由教育者选择的小组参与者的会话控制信息。

公开(公告)号：KR1020080021368A

公开(公告)日：2008-03-07

申请号：KR1020060084712

申请日：2006-09-04

Applicant: 한국전자통신연구원

Inventor： 오승훈 ,  심재찬 ,  송호영 ,  이성용 ,  김봉태

IPC: H04N21/472

CPC classification number: H04N5/44543 ,  G06F3/0482 ,  H04N21/4312 ,  H04N21/4314 ,  H04N21/4622 ,  H04N21/4821

Abstract: A method for searching a digital multimedia service by using a dashboard and a set top box having the same are provided to enable a user to grasp a current service search location and an entire structure by displaying an entire service layer structure on one screen when searching a service, thereby quickly searching a desired service. If a user inputs a menu selection request, a user interface is provided(S110,S120). The user interface is formed in a dashboard type where plural layers are displayed within one screen. The plural layers are produced by sequentially dividing all suppliable multimedia services from an upper concept to a lower concept. One layer of the plural layers is selected by a user(S130). If a top layer is selected, detail items produced by classifying the top concept of the multimedia service are provided, and one of the detail items is selected(S150). If one layer is selected among the rest layers except the top layer and the lowest layer, a detail item belonging to a lower rank of a detail item selected from an upper layer of the selected layer is provided. One of the detail items is selected(S170). If the lowest layer is selected, information about a multimedia service designated by the layers is displayed(S180).

Abstract translation: 提供了一种通过使用仪表板和具有该仪表板的机顶盒搜索数字多媒体服务的方法，以便用户能够在搜索一个屏幕时在一个屏幕上显示整个服务层结构来掌握当前服务搜索位置和整个结构 服务，从而快速搜索所需的服务。 如果用户输入菜单选择请求，则提供用户界面（S110，S120）。 用户接口形成为在一个屏幕内显示多个层的仪表板类型。 通过将所有可提供的多媒体服务从上层概念顺序划分为较低概念来产生多层。 用户选择多层的一层（S130）。 如果选择顶层，则提供通过分类多媒体服务的顶级概念而产生的详细项目，并且选择其中一个详细项目（S150）。 如果在除了顶层和最下层之外的其余层中选择一层，则提供属于从选定层的上层中选择的细节项的较低等级的细节项。 选择其中一个细节项（S170）。 如果选择最低层，则显示由层指定的多媒体服务的信息（S180）。

公开(公告)号：KR102113814B1

公开(公告)日：2020-06-02

申请号：KR1020170002442

申请日：2017-01-06

Applicant: 한국전자통신연구원

Inventor： 고석갑 ,  오승훈 ,  손승철 ,  이병탁 ,  김영선

IPC: H04L29/06 ,  H04L29/08 ,  H04L12/66

公开(公告)号：KR101754364B1

公开(公告)日：2017-07-07

申请号：KR1020130141600

申请日：2013-11-20

Applicant: 한국전자통신연구원

Inventor： 고석갑 ,  손승철 ,  오승훈 ,  이병탁 ,  김영선

IPC: H04L9/30 ,  H04L9/32 ,  H04L9/08 ,  H04L29/06

CPC classification number: H04L9/0819 ,  H04L63/06 ,  H04L63/08

Abstract: 본발명은센서네트워크보안을위한키 관리시스템및 그방법에관한것으로구체적으로본 발명은센서네트워크에서의보안기술에관한것으로이에필요한키를생성, 배포, 갱신하는방법에관한것이다. 본발명은센서네트워크의비밀키관리시스템으로서센서네트워크의노드, 암호및 메시지인증을위한비밀키맵을생성하고, 생성된상기비밀키맵을갱신하여관리하는비밀키생성부, 비밀키맵에저장된노드의보안정보를임의로선택하여상대노드에게전송하는비밀키전송부, 상대노드로부터획득한비밀키와상기노드의비밀키를비교하여, 상기센서네트워크의노드, 암호및 메시지를인증하는제어부를포함한다.

Abstract translation: 发明内容本发明具体涉及一种密钥管理的系统和方法适用于传感器网络安全涉及一种方法来创建，分发，此更新必要的密钥涉及一种安全技术eseoui传感器网络。 生成秘密键映射为节点，密码，并且传感器网络作为私有密钥管理系统，该传感器网络的消息认证，以及用于管理和更新的秘密键映射所生成的秘密密钥生成的本发明中，存储在秘密键映射节点的安全 以及控制器，用于将从伙伴节点获得的秘密密钥与节点的秘密密钥进行比较，以对节点，传感器网络的加密和消息进行认证。

公开(公告)号：KR1020140079537A

公开(公告)日：2014-06-27

申请号：KR1020120146824

申请日：2012-12-14

Applicant: 한국전자통신연구원

Inventor： 오승훈 ,  윤심권 ,  유홍연 ,  이병탁 ,  김영선

IPC: H04W88/18 ,  H04W76/00 ,  H04W92/18

CPC classification number: H04W52/0229 ,  H04W92/18 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/166

Abstract: A control device for controlling wireless communications connection between communications devices according to one embodiment of the present invention includes a communications unit which wirelessly communicates with a first communications device and a second communications device, a user interface unit which generates a communications unit activating signal according to the control of a user, and a control unit which activates the communications unit according to the communications unit activating signal. The communications unit receives communications connection information for communications between the first and second communications devices from the first communications device and transmits the communications connection information to the second communications device.

Abstract translation: 根据本发明的一个实施例的用于控制通信设备之间的无线通信连接的控制设备包括：与第一通信设备和第二通信设备进行无线通信的通信单元，根据本发明的生成通信单元激活信号的用户接口单元 用户的控制，以及根据通信单元激活信号激活通信单元的控制单元。 通信单元从第一通信设备接收用于第一和第二通信设备之间的通信的通信连接信息，并将通信连接信息发送到第二通信设备。

公开(公告)号：KR101239472B1

公开(公告)日：2013-03-18

申请号：KR1020090092377

申请日：2009-09-29

Applicant: 한국전자통신연구원

Inventor： 손승철 ,  김경훈 ,  오승훈 ,  이병탁 ,  김상균 ,  고재상

IPC: H04L12/26

Abstract: 수신된 미디어의 패킷 간의 시간간격을 수집하는 단계, 상기 수집된 시간간격에 기초하여 패킷과 연관된 단방향 지연을 검사하는 단계, 및 상기 검사된 단방향 지연을 송신측에 보고하는 단계를 포함하는 네트워크 가용대역폭 측정 방법을 제공한다.
시간간격, 전송지연, 비트율, 패킷, 분석

公开(公告)号：KR1020110055791A

公开(公告)日：2011-05-26

申请号：KR1020090112351

申请日：2009-11-20

Applicant: 한국전자통신연구원

Inventor： 김경훈 ,  김낙우 ,  이병탁 ,  오승훈 ,  고재상

IPC: H04L12/18 ,  H04L12/761

CPC classification number: H04L12/18 ,  H04L45/16

Abstract: PURPOSE: An overlay multicast system and method thereof for a group media transmission application service are provided to perform merge, partition, transmission of additional stream and main stream that is inputted from a parent node. CONSTITUTION: A merge unit(110) merges additional stream in multi stream and main stream that is inputted from a parent node. A division unit(120) selectively divides main stream or additional stream from multi stream. A recording unit(130) records stream correlation information. An analysis unit(140) determines the merge of stream in a corresponding node.

Abstract translation: 目的：提供用于组媒体传输应用服务的覆盖多播系统及其方法，用于执行从父节点输入的附加流和主流的合并，分区，传输。 构成：合并单元（110）合并从父节点输入的多流中的附加流和主流。 分割单元（120）选择性地从多流中划分主流或附加流。 记录单元（130）记录流相关信息。 分析单元（140）确定流在相应节点中的合并。

公开(公告)号：KR1020100061265A

公开(公告)日：2010-06-07

申请号：KR1020090017032

申请日：2009-02-27

Applicant: 한국전자통신연구원

Inventor： 유홍연 ,  오승훈 ,  문병권 ,  김경훈 ,  이병탁 ,  김낙우 ,  고재상

IPC: H04N21/236

CPC classification number: H04N21/2365 ,  H04N19/176 ,  H04N21/23418 ,  H04N21/4758

Abstract: PURPOSE: An apparatus for mixing a video stream and a method thereof are provided to guarantee real time characteristic in the mixture of a plurality of video streams by mixing compacted video streams as one of compacted video of the desired screen configuration in the compressed domain. CONSTITUTION: An input buffer unit(10) receives the input of a plurality of compacted video streams. A stream analyzing unit(20) analyzes the bit string of the inputted video stream. A stream mixing unit(30) selectively varies slider header area of a plurality of compacted video stream bit strings according to the screen configuration based on the analyzed result. An output buffer unit(40) outputs the mixed compacted video stream according to the slice header zone change.

Abstract translation: 目的：提供一种用于混合视频流的装置及其方法，以通过将压缩的视频流混合为压缩域中期望的屏幕配置的压缩视频之一来保证多个视频流的混合中的实时特性。 构成：输入缓冲器单元（10）接收多个压缩视频流的输入。 流分析单元（20）分析输入视频流的位串。 流混合单元（30）基于分析结果，根据屏幕配置选择性地改变多个压缩视频流比特串的滑块头部区域。 输出缓冲器单元（40）根据切片标题区域改变输出混合压缩视频流。

公开(公告)号：KR1020100061264A

公开(公告)日：2010-06-07

申请号：KR1020090017030

申请日：2009-02-27

Applicant: 한국전자통신연구원

Inventor： 오승훈 ,  박일균 ,  이병탁 ,  김상균 ,  손승철 ,  고석갑 ,  김성창 ,  고재상

IPC: H04N21/437

CPC classification number: H04N21/4758 ,  H04N21/433 ,  H04N21/47214

Abstract: PURPOSE: A method and an apparatus for providing an interactive broadcast service are provided to supply the broadcasting service with less cost by realizing the participation type broadcasting of the IPTV base. CONSTITUTION: A participation request receiving unit(210) receives a participation request of the participation type broadcast from a participant terminal. A reservation request receiving unit(220) receives a reservation request about the participation type broadcasting contents from a broadcaster terminal. A service providing unit(240) receives the visual content from the participant terminal. The service providing unit provides the broadcast service with the synthesis of the participation type broadcasting contents and visual contents.

Abstract translation: 目的：提供一种用于提供交互式广播服务的方法和装置，通过实现IPTV基地的参与型广播来为广播业务提供更少的成本。 构成：参与请求接收单元（210）从参与者终端接收参与类型广播的参与请求。 预约请求接收单元从广播终端接收关于参与类型广播内容的预约请求。 服务提供单元（240）从参与者终端接收视觉内容。 服务提供单元向广播服务提供参与类型广播内容和视觉内容的综合。