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公开(公告)号：KR1020150057422A
公开(公告)日：2015-05-28
申请号：KR1020130140790
申请日：2013-11-19
Applicant: 한국전자통신연구원
CPC classification number: G06F3/03545 , G06F3/0383 , G09G2354/00 , G09G2370/02 , G09G2370/04 , G09G2370/16 , G06F13/14 , G06F3/01 , G06F3/14 , G06F13/4063
Abstract: 포인팅장치를이용하여디스플레이장치와사용자단말사이의데이터송수신을매개하는방법이개시된다. 본발명의일 면에따른데이터송수신방법은무선네트워크에연결가능한디스플레이장치에서포인팅장치를이용하여사용자단말로데이터를송수신하는방법에있어서, (a) 상기디스플레이장치상에서상기포인팅장치가가리키는영역의위치정보를획득하는단계; 및 (b) 상기디스플레이장치의화면상에서상기영역에표시된오브젝트에대응되는데이터를상기포인팅장치를이용하여상기사용자단말로전송하는단계를포함한다.
Abstract translation: 公开了一种通过使用指示设备来介导显示设备和用户终端之间的数据发送和接收的方法。 根据本发明的一个方面，通过使用能够连接到无线网络的显示装置中的指示装置将数据发送到用户终端并从用户终端接收数据的方法包括以下步骤：获得位置信息 指示设备指向显示设备的区域; 和（b）通过使用指示装置将对应于显示在显示装置的屏幕上的对象的数据发送到用户终端。
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公开(公告)号：KR1020140099180A
公开(公告)日：2014-08-11
申请号：KR1020140001786
申请日：2014-01-07
Applicant: 한국전자통신연구원
IPC: H04N19/114 , H04N19/172 , H04N21/2343 , H04N19/44 , H04N5/232
CPC classification number: H04N19/114 , H04N5/23254 , H04N19/00 , H04N19/172 , H04N19/176 , H04N19/44 , H04N21/234381
Abstract: Disclosed are a method for encoding/decoding a high-resolution digital video and an apparatus therefor. A method for encoding a digital video includes the steps of: dividing a picture into a plurality of divided frames; generating a plurality of element frames for each of the plural divided frames; extracting a lowest frequency element frame having the lowest frequency band among the element frames; and combining the lowest frequency element frames of each of the divided frames with each other to generate a low-resolution picture having a resolution lower than that of the picture.
Abstract translation: 公开了一种用于对高分辨率数字视频进行编码/解码的方法及其装置。 一种对数字视频进行编码的方法包括以下步骤：将图像划分成多个分割帧; 为所述多个分割帧中的每一个生成多个元素帧; 提取在所述元素帧中具有最低频带的最低频率元素帧; 并且将每个分割帧的最低频率元素帧彼此组合以产生分辨率低于图像的分辨率的低分辨率图像。
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公开(公告)号：KR1020140077779A
公开(公告)日：2014-06-24
申请号：KR1020120146910
申请日：2012-12-14
Applicant: 한국전자통신연구원
Abstract: Disclosed is a method for reducing an amount of compressed still image data and improving image quality upon compression of a video, using metadata of a camera. The disclosed method comprises the steps of: acquiring an image; analyzing metadata of a camera corresponding to the acquired image to divide each block of the acquired image into one among an out-focused block, a general block, and a focused block; and compressing the acquired image, but adjusting a quantization variable value according to the inputted divided blocks and compressing the acquired image. Therefore, an amount of data can be reduced or image quality can be improved by using metadata of a camera upon compression of an image. In particular, image quality can be improved by removing a screen blocking effect caused by skipping a screen in an out-focused area upon compression of a video.
Abstract translation: 公开了一种使用照相机的元数据来减少压缩的静止图像数据的量并且在压缩视频时提高图像质量的方法。 所公开的方法包括以下步骤：获取图像; 分析与所获取的图像相对应的相机的元数据，以将所获取的图像的每个块分割为外焦点块，一般块和聚焦块中的一个; 并且压缩所获取的图像，但是根据输入的分割块来调整量化可变值并压缩获取的图像。 因此，通过在压缩图像时使用照相机的元数据，可以减少数据量或者可以提高图像质量。 特别地，通过在压缩视频时，通过去除在外部对焦区域中的屏幕而导致的屏幕阻塞效果，可以提高图像质量。
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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：KR1020110071744A
公开(公告)日：2011-06-29
申请号：KR1020090128388
申请日：2009-12-21
Applicant: 한국전자통신연구원
CPC classification number: H04N19/85 , H04N19/30 , H04N19/70 , H04N21/4627
Abstract: PURPOSE: A DRM(Digital Rights Management)-based image encoding or decoding apparatus and method are provided to offer the video file of a different layer range according to the video file access right of a user. CONSTITUTION: A right information analysis unit(100) analyzes user access right for an image compression file compressed by layer. A decoding range setting unit(101) establishes the decoding range of the image compression file on the basis of the user access right. A decoding unit(102) decodes the image compression file on the basis of the set decoding range. The decoding unit supplies a crated video file to a user terminal.
Abstract translation: 目的：提供基于DRM（数字版权管理）的图像编码或解码装置和方法，以根据用户的视频文件访问权提供不同图层范围的视频文件。 构成：正确的信息分析单元（100）分析由层压缩的图像压缩文件的用户访问权限。 解码范围设定部（101）基于用户访问权限建立图像压缩文件的解码范围。 解码单元（102）根据设定的解码范围对图像压缩文件进行解码。 解码单元向用户终端提供装箱的视频文件。
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Patent Agency Ranking
公开(公告)号：KR1020110071204A
公开(公告)日：2011-06-29
申请号：KR1020090127708
申请日：2009-12-21
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A parallel processing method of JPEG(Joint Photographic Experts Group)2000 based on wavelet transformation is provided to apply to the high-speed encoding system by parallelly processing the independent data area thorough thread in wavelet based JPEG2000 coding process. CONSTITUTION: The wavelet transformation for a plurality of components of the input image is parallelly operated(S310). The top data area among the wavelet transformed data is encoded(S320). The encoding for the rest data area except for the top data area is parallelly processed by using the top data area.
Abstract translation: 目的：提供基于小波变换的JPEG（联合图像专家组）2000的并行处理方法，通过并行处理基于小波的JPEG2000编码过程中的独立数据区域线程，适用于高速编码系统。 构成：输入图像的多个分量的小波变换被并行操作（S310）。 编码小波变换数据中的顶部数据区域（S320）。 通过使用顶部数据区域并行处理除顶部数据区域之外的休息数据区域的编码。
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公开(公告)号：KR1020110070499A
公开(公告)日：2011-06-24
申请号：KR1020090127340
申请日：2009-12-18
Applicant: 한국전자통신연구원
IPC: G06F21/10 , H04N21/4415 , H04N21/4627
CPC classification number: G06F21/16 , H04L2209/603 , H04N21/4627 , H04N21/63
Abstract: PURPOSE: Digital contents sharing device, system and method are provided to solve user inconvenience caused by the closure of DRM(Digital Rights Management), to share the digital contents applied to the DRM between various devices, and to prevent the illegal distribution of the digital contents. CONSTITUTION: A decoding unit(120) decodes encoded digital contents. A fingerprint unit(130) inserts the fingerprint to the decoded digital contents on a basis of the information for tracking an outflow path and stores the digital contents in which fingerprint is inserted. A transmit unit(140) transmits the digital contents in which fingerprint is inserted to the second device. The fingerprint unit converts the decoded digital contents with corresponding to the second device and inserts the fingerprint into the converted digital contents.
Abstract translation: 目的：提供数字内容共享设备，系统和方法来解决DRM（数字版权管理）关闭造成的用户不便，共享应用于各种设备之间DRM的数字内容，并防止数字 内容。 构成：解码单元（120）解码编码的数字内容。 指纹单元（130）基于用于跟踪流出路径的信息将指纹插入解码的数字内容，并存储其中插入指纹的数字内容。 发送单元（140）将其中插入有指纹的数字内容发送到第二设备。 指纹单元将解码的数字内容与第二设备相对应地转换，并将指纹插入转换的数字内容。
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公开(公告)号：KR100936938B1
公开(公告)日：2010-01-14
申请号：KR1020070132362
申请日：2007-12-17
Applicant: 한국전자통신연구원
Abstract: 본 발명은 스트리밍 DRM 연동을 위한 패킷 처리 장치 및 그 방법에 관한 것으로, DRM 연동의 대상이 되는 콘텐츠, 권한정보, 메타데이터를 각각 분리하여 처리함으로써 DRM 시스템에 따라 서로 상이한 데이터 전송 방식에 효과적으로 대응할 수 있고, 각 정보를 패킷화함에 따라 단일 채널을 통해 콘텐츠, 권한정보, 메타데이터가 자유롭게 전송될 수 있으며, 캐쉬를 이용함에 따라 권한정보나 메타데이터와 같이 주기적으로 반복 전송되거나 온디맨드 전송이 필요한 경우 전송 통제가 가능하게 된다. 즉, 패킷화와 캐쉬를 이용한 콘텐츠, 권한정보, 메타데이터 전송 방식을 통해 다양한 스트리밍 DRM 시스템 사이에서 원활한 시스템 연동을 가능하게 한다. 또한, 서로 다른 DRM 체계간의 연동 과정에서, 콘텐츠, 권한정보, 메타데이터 전송 방식이 상이한 보호체계간에 데이터 전달을 규격화하는데 이용될 수 있다.
패킷화기, 언패킷화기, 콘텐츠, 권한 정보, 메타 데이터-
公开(公告)号：KR1020090064969A
公开(公告)日：2009-06-22
申请号：KR1020070132362
申请日：2007-12-17
Applicant: 한국전자통신연구원
Abstract: A packet processing apparatus for streaming DRM interlocking and a method thereof are provided to separately process contents, right information and metadata which are DRM interlocking targets, thereby effectively coping with data transmission modes different according to a DRM system. A contents packetizer(110) provides separated contents packets to a packet transmitter after separating contents into contents packets. A right information packetizer(120) provides the separated right information packets to the packet transmitter. A metadata packetizer(130) provides the separated metadata packets to the packet transmitter after separating the metadata into metadata packets.
Abstract translation: 提供用于流式传输DRM互锁的分组处理装置及其方法，以分别处理作为DRM互锁目标的内容，正确信息和元数据，从而有效地应对根据DRM系统不同的数据传输模式。 内容分组化器（110）在将内容分成内容分组后，向分组发送器提供分离的内容分组。 右信息分组化器（120）向分组发送器提供分离的右信息分组。 元数据分组器（130）在将元数据分离成元数据分组之后，将分离的元数据分组提供给分组发送器。
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公开(公告)号：KR1020080114665A
公开(公告)日：2008-12-31
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: A method for managing group key for multicast communications is provided to reduce a use cost of network by minimizing the number of message transmitted to network for key renewals. A method for managing group key for multicast communications comprises the following steps: a step for producing a tree which is comprised to a root, an in-between, and a leaf node for a group key management of a receiver group in a management server(S100); a step for producing a user key about each node except for a root node using a chinese remainder theorem(S110); a step for assigning each user belonging to the receiver group to the leaf node(S120); a step for delivering the user key for the group key management of the corresponding leaf node to each user(S130); a step for producing the group key about each node except for the leaf node(S140); a step for calculating the chinese remainder theorem value using the user key and the group key in each node except for the leaf node(S150); and a step for transmitting a group key update message to a multicast(S160).
Abstract translation: 提供了一种用于管理用于组播通信的组密钥的方法，以通过最小化发送到网络的消息的数量来减少网络的使用成本，用于密钥更新。 一种用于管理用于多播通信的组密钥的方法包括以下步骤：用于生成树的步骤，其包括到根，中间和叶节点之间，用于管理服务器中的接收器组的组密钥管理（ S100）; 使用中文余数定理生成除了根节点之外的每个节点的用户密钥的步骤（S110）; 将属于接收器组的每个用户分配给叶节点的步骤（S120）; 向每个用户传送用于所述对应叶节点的组密钥管理的用户密钥的步骤（S130）; 生成除了叶节点之外的每个节点的组密钥的步骤（S140）; 使用除了叶节点之外的每个节点中的用户密钥和组密钥来计算中文余数定理值的步骤（S150）; 以及将组密钥更新消息发送到多播的步骤（S160）。
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