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公开(公告)号：KR101348276B1
公开(公告)日：2014-01-10
申请号：KR1020070043706
申请日：2007-05-04
Applicant: 한국전자통신연구원
IPC: H04N19/132 , H04N19/51 , H04N13/00
CPC classification number: H04N19/86 , H04N19/33 , H04N19/53 , H04N19/597 , H04N19/61
Abstract: 본 발명에서는 원래 영상의 정보를 사용하여 원래 영상의 해상도를 낮추는 경우보다 화질이 좋으면서도, 원래 영상을 그대로 압축하는 것보다 압축률을 향상시키는 방법 및 장치를 제공한다. 본 발명에 의한 다시점 동영상을 부호화 하는 방법은 현재 부호화하고자 하는 영상의 참조 영상에 대한 움직임 또는 변이 벡터를 계산하는 단계와, 상기 현재 영상과 상기 참조 영상의 화소값 차이인 잔여신호를 다운샘플링하여 해상도를 줄이고 부호화 하는 단계와, 상기 부호화된 잔여신호를 복호화하고 업샘플링하여 원래의 해상도로 복원하는 단계와, 상기 복원된 잔여신호의 블록과 상기 움직임 또는 변이 벡터에 따라 결정되는 상기 참조 영상의 블록을 합하여 상기 현재 영상을 복원하는 단계를 포함하는 것을 특징으로 한다.
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公开(公告)号：KR1020130142932A
公开(公告)日：2013-12-30
申请号：KR1020130069404
申请日：2013-06-18
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2637 , H04B7/12 , H04L1/004 , H04L1/08 , H04L5/0007 , H04L5/001 , H04L5/0044 , H04L5/0053 , H04L27/2617 , H04L27/2621 , H04L27/2627 , H04W52/0209 , H04W72/0453 , H04W84/12 , Y02D70/00 , Y02D70/142
Abstract: A method and apparatus for OFDM transmission in a wireless LAN is disclosed. A method and apparatus for OFDM transmission in a wireless LAN according to one embodiment includes: a signal repeater repeating an encoded signal by a block to output the encoded signal and repeated signal together; an interleaver interleaving the encoded signal and repeated signal and outputting the interleaved signal; a modulator modulating the interleaved signal and outputting modulated symbols; and a phase rotation unit changing the phase of the modulated symbols. [Reference numerals] (610) Signal repetition unit;(620) Interleaver;(630) Modulation unit;(640) Phase rotation unit;(650) Transmitting unit
Abstract translation: 公开了一种用于无线LAN中的OFDM传输的方法和装置。 根据一个实施例的用于无线LAN中的OFDM传输的方法和装置包括：信号中继器，通过块重复编码信号，一起输出编码信号和重复信号; 交织器交织编码信号和重复信号并输出交错信号; 调制所述交错信号并输出调制符号的调制器; 以及改变调制符号的相位的相位旋转单元。 （610）信号重复单元;（620）交织器;（630）调制单元;（640）相位旋转单元;（650）发送单元
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公开(公告)号：KR1020130139802A
公开(公告)日：2013-12-23
申请号：KR1020130067701
申请日：2013-06-13
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W52/0216 , H04W74/006 , H04W84/12 , Y02D70/00 , Y02D70/142 , Y02D70/23 , H04W72/042 , H04W52/0225
Abstract: An operating mode change method of a wireless LAN system and a wireless LAN system are disclosed. An operating mode change method of a wireless LAN system according to one embodiment includes a step for transmitting an operating mode change request including at least one of information about traffic indication map (TIM) mode change to an access point (AP), request for change of a power parameter, and information about STA service type change; a step for receiving an operating mode change response frame including at least one of information of AID reallocated, power save parameter changed, and TIM mode allowed by the AP; and a step for changing at least one of the TIM mode and the power save parameter based on information included in the operating mode change response frame.
Abstract translation: 公开了一种无线LAN系统和无线LAN系统的操作模式改变方法。 根据一个实施例的无线LAN系统的操作模式改变方法包括将包括关于业务指示图（TIM）模式改变的信息中的至少一个的操作模式改变请求发送到接入点（AP）的步骤， 功率参数，以及有关STA服务类型变化的信息; 接收包括AID重新分配的信息，功率保存参数改变的信息和AP允许的TIM模式中的至少一个的操作模式改变响应帧的步骤; 以及基于包括在操作模式改变响应帧中的信息来改变TIM模式和省电参数中的至少一个的步骤。
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84.发明公开무선랜에서 버퍼링된 데이터의 전송 스케줄을 제어하는 장치 및 방법, 무선랜에서 전송 스케줄에 기초하여 버퍼링된 데이터를 수신하는 단말 审中-实审用于在无线局域网中控制缓冲数据传输时间表的方法和装置，用于基于WLAN中的传输时间表接收缓冲数据的终端
公开(公告)号：KR1020130139797A
公开(公告)日：2013-12-23
申请号：KR1020130067266
申请日：2013-06-12
Applicant: 한국전자통신연구원
CPC classification number: H04W52/0216 , H04W52/0219 , H04W84/12 , Y02D70/142 , H04W72/1278 , H04W28/14 , H04W72/042 , Y02D70/00
Abstract: The present invention relates to a technology by which an access point managing a network in a wireless local area network (WLAN) environment controls a transmission schedule of buffered data, and a terminal obtains information the transmission schedule. A device controlling a transmission schedule of buffered data in WLAN according to one embodiment makes terminals a group based on at least one of the terminals' service property and traffic property, allocates group information to wake each group of the grouped terminals in a different time, and transmits at least one of group DTIM (delivery traffic indication map) information and buffered data based on the allocated group information. [Reference numerals] (210) Grouping unit;(220) Group information allocation unit;(221) Transmission period determination unit;(223) Identification generator;(225) Group counter;(227) Offset counter;(230) Transmission unit;(240) Reception unit
Abstract translation: 本发明涉及一种管理无线局域网（WLAN）环境中的网络的接入点控制缓冲数据的传输调度的技术，并且终端获得传输时间表的信息。 根据一个实施例，控制WLAN中缓冲数据的传输调度的设备基于终端的服务特性和业务属性中的至少一个使终端成为一个组，分配组信息以在不同时间唤醒分组终端的每组， 并且基于所分配的组信息发送组DTIM（传送业务指示映射）信息和缓冲数据中的至少一个。 （210）分组单元;（220）组信息分配单元;（221）发送周期确定单元;（223）识别生成器;（225）组计数器;（227）偏移计数器;（230）发送单元; （240）接收单元
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85.发明公开무선랜에서 채널 액세스 관련정보를 요청 및 획득하는 방법 및 단말, 무선랜에서 채널 액세스 관련정보를 제공하는 장치 审中-实审在无线局域网中请求和获取与频道访问相关的信息的终端和方法，用于提供与WLAN中的信道访问相关的信息的装置
公开(公告)号：KR1020130139791A
公开(公告)日：2013-12-23
申请号：KR1020130067119
申请日：2013-06-12
Applicant: 한국전자통신연구원
CPC classification number: H04W74/002 , H04W48/14
Abstract: The present invention relates to a terminal requesting and obtaining information related to channel access and a device providing information related to channel access in wireless local area network (WLAN). A terminal requesting and obtaining information related to channel access in WLAN according to one embodiment checks the reception of a beacon during a set beacon interval, transmits a group and slot information request signal when the beacon has not received, and receives a group and slot information request signal as a response to the group and slot information request signal from an access point. [Reference numerals] (210) Receiving unit;(220) Confirmation part;(230) Transmitting unit;(240) Access unit
Abstract translation: 本发明涉及请求和获取与频道接入相关的信息的终端，以及提供与无线局域网（WLAN）中的信道接入有关的信息的设备。 根据一个实施例，请求和获得与WLAN中的信道接入相关的信息的终端在设置的信标间隔期间检查信标的接收，当信标尚未接收时发送组和时隙信息请求信号，并且接收组和时隙信息 作为对来自接入点的组和时隙信息请求信号的响应的请求信号。 （附图标记）（210）接收单元;（220）确认部;（230）发送单元;（240）接入单元
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Patent Agency Ranking
公开(公告)号：KR1020130139790A
公开(公告)日：2013-12-23
申请号：KR1020130067115
申请日：2013-06-12
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W72/0453 , H04L41/0803 , H04W72/048 , H04W84/12 , H04W72/042 , H04W28/10 , H04W72/0446 , H04W72/082
Abstract: Disclosed are a communication method and a communication device of a wireless LAN system supporting multiple bandwidths. A communication method of a wide-area wireless LAN system according to one embodiment of the present invention includes the following steps: a step wherein a communication device of a network supporting multiple bandwidths generates a base frame based on either a first bandwidth, which has the lowest signal-to-noise ratio among predetermined bandwidths, or a second bandwidth which is two times wider than the first bandwidth; a step wherein the communication device constructs a duplication mode frame based on the base frame; and a step wherein the communication device transmits the duplication mode frame through multiple bands.
Abstract translation: 公开了支持多个带宽的无线LAN系统的通信方法和通信装置。 根据本发明的一个实施例的广域无线LAN系统的通信方法包括以下步骤：其中支持多个带宽的网络的通信设备基于第一带宽生成基本帧，所述第一带宽具有 预定带宽之间的最低信噪比，或比第一带宽宽两倍的第二带宽; 其中所述通信设备基于所述基本帧构建复制模式帧; 以及通信装置通过多个频带发送复制模式帧的步骤。
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公开(公告)号：KR101342587B1
公开(公告)日：2013-12-17
申请号：KR1020070028225
申请日：2007-03-22
Applicant: 한국전자통신연구원 , 세종대학교산학협력단
IPC: H04N19/51 , H04N19/136
CPC classification number: H04N19/463 , H04N19/157 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/513 , H04N19/52 , H04N19/593 , H04N19/597 , H04N19/61 , H04N19/70
Abstract: 본원발명은조명변화보상움직임예측부호화및 복호화방법및 장치에관한것이다. 본원발명의조명변화보상움직임예측부호화장치는현재블록의화소값및 상기현재블록의움직임벡터가가리키는참조블록의화소값에서상기현재블록의화소평균값과상기참조블록의화소평균값을각각차분하여조명변화보상을수행하는조명변화보상부, 조명변화보상이수행된블록들을기초로잔여신호를생성하는잔여신호생성부및 조명변화가발생한인접한블록간의밀접성을반영하여조명변화량예측값을기초로차분펄스부호변조(DPCM)를수행하는조명변화량예측부;를포함한다.
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公开(公告)号：KR1020130125296A
公开(公告)日：2013-11-18
申请号：KR1020130041908
申请日：2013-04-16
Applicant: 한국전자통신연구원
IPC: H04W48/16
Abstract: The purpose of the present invention is to provide an effective scanning method providing a speed faster than the passive scanning by performing active scanning using a short probe response frame including minimum information required for association in a radio local area network, and to reduce overhead in the active scanning.
Abstract translation: 本发明的目的是提供一种有效的扫描方法，其通过使用包括无线电局域网中的关联所需的最小信息的短探测响应帧进行主动扫描来提供比被动扫描更快的速度，并且减少 主动扫描
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公开(公告)号：KR101188956B1
公开(公告)日：2012-10-08
申请号：KR1020090075656
申请日：2009-08-17
Applicant: 한국전자통신연구원
IPC: H04B7/04
Abstract: 송신 안테나 다중화 시스템에서 송신 안테나를 스위칭하는 송/수신 장치 및 방법을 제안한다. 본 발명의 실시예에 따른 송신 장치는 수신 장치로부터 공고 명령 프레임을 수신하면 상기 수신한 공고 명령 프레임에 포함된 송신 안테나 다중화 정보(TSD IE)를 확인하여 송신 안테나의 스위칭을 요청하는지 여부를 확인하는 공고 명령 프레임 판독부; 상기 수신한 공고 명령 프레임이 상기 송신 안테나의 스위칭을 요청하면 복수의 안테나들 중에서 선택하지 않았던 안테나를 송신 안테나로 선택하고, 상기 선택한 송신 안테나로 스위칭하는 안테나 스위칭부; 및 상기 TSD IE에 포함된 송신 안테나 정보를 상기 선택한 송신 안테나로 변경하고, 상기 변경된 TSD IE를 포함하는 응답 공고 명령 프레임을 생성해서 상기 수신 장치로 송신하는 공고 명령 프레임 생성부를 포함한다.
송신 안테나 다중화, TSD-
90.发明公开
公开(公告)号：KR1020120103510A
公开(公告)日：2012-09-19
申请号：KR1020120024669
申请日：2012-03-09
Applicant: 한국전자통신연구원
CPC classification number: H04N13/194 , H04H20/18 , H04H2201/40 , H04N13/161 , H04N21/2353 , H04N21/2362 , H04N21/2381 , H04N21/43 , H04N21/4307 , H04N21/4325 , H04N21/4344 , H04N21/4622 , H04N21/6125 , H04N21/6543 , H04N21/8146 , H04N21/816 , H04N21/8451
Abstract: PURPOSE: A transmission device for providing a stereoscopic broadcasting service of a program linkage type and a method and a reception device and a method thereof are provided to enable a reference picture to use a 2DTV system, and to deliver an additional picture based on an advanced television systems committee and a network resource table transmission mechanism in non real time, thereby overcoming a limit of a 3D band width and supplying compatibility with a existing 2D broadcasting system. CONSTITUTION: A real time stream encoder(210) generates a real time stream by encoding a reference picture. A non real time stream encoder(230) generates a non real time stream based on an additional picture. A picture synchronization information generator(220) generates a picture synchronization information stream and service signaling for synchronization of the reference picture and the additional picture. A re-multiplexer(240) generates a stereoscopic broadcasting stream of a program linkage type. [Reference numerals] (201) Standard image; (203) Additional image; (205) Transmitting server; (210) Real time stream encoder; (220) Service signaling and image synchronization information generator; (222) 3D contents synchronization information; (234) NRT signaling information encoder; (236) NRT contents encoder; (240) Re-multiplexer; (AA) Real time stream; (BB) Service signaling and image synchronization information; (CC) NRT signaling information; (DD) Non real time stream; (EE) Non real time stream encoder; (FF) Non real time contents managing unit; (GG) Program linkage type stereoscopic broadcasting stream
Abstract translation: 目的：提供一种用于提供节目联动类型的立体广播服务的发送装置，方法和接收装置及其方法，以使得参考图片能够使用2DTV系统，并且基于高级 电视系统委员会和网络资源表传输机制，从而克服3D带宽的限制并提供与现有2D广播系统的兼容性。 构成：实时流编码器（210）通过对参考图像进行编码来生成实时流。 非实时流编码器（230）基于附加图像生成非实时流。 图像同步信息生成器（220）生成用于同步参考图像和附加图像的图像同步信息流和服务信令。 再复用器（240）产生节目链接类型的立体广播流。 （附图标记）（201）标准图像; （203）附加图像; （205）传送服务器; （210）实时流编码器; （220）服务信令和图像同步信息发生器; （222）3D内容同步信息; （234）NRT信令信息编码器; （236）NRT内容编码器; （240）再多路复用器; （AA）实时流; （BB）服务信令和图像同步信息; （CC）NRT信令信息; （DD）非实时流; （EE）非实时流编码器; （FF）非实时内容管理单元; （GG）节目联动型立体广播流
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