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公开(公告)号：KR1020050063300A
公开(公告)日：2005-06-28
申请号：KR1020030094691
申请日：2003-12-22
Applicant: 한국전자통신연구원
IPC: H04L12/70 , H04N21/222
Abstract: 본 발명은 컨텐츠 분배 관리 시스템에서의 컨텐츠 복제 방법에 관한 것으로, 네트워크를 통해 클러스터에 연결된 클라이언트에게 상기 클러스터내의 각종 실행 노드에 포함된 복수 개의 저장장치에 저장되어 있는 컨텐츠를 스트림 서비스하는 컨텐츠 분배 관리 방법으로서, 상기 컨텐츠 중에서 복제 대상 컨텐츠의 일부를 복제한 부분 컨텐츠를 상기 스트림 서비스를 위해 상기 저장장치에 저장하는 것을 특징으로 하며, 복제 컨텐츠로 인한 저장장치의 낭비도 줄이면서 고성능과 고가용성을 제공하는 이점이 있다.
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公开(公告)号：KR100492911B1
公开(公告)日：2005-06-02
申请号：KR1020030057683
申请日：2003-08-20
Applicant: 한국전자통신연구원
IPC: G06F15/16
Abstract: 본 발명은 각 집적회로 칩이 상대 칩으로 신호를 전송하거나 상대 칩으로부터 신호를 수신하기 위하여 입출력 버퍼를 각각 구비하고 있는 적어도 둘 이상의 집적회로 칩이 구비된 하드웨어 환경에 적용되며, 상기 출력 버퍼의 전류를 자동적으로 제어하기 위한 장치에 관한 것이다. 신호 무결성 검사부는 상기 입력 버퍼를 통해 상대 칩으로부터 수신된 신호의 상태를 검사하여 그 결과를 신호 무결성 제어부에 출력한다. 상기 신호 무결성 제어부는 상기 신호 무결성 검사부로부터의 검사 결과를 소정의 프로토콜에 따라 변환하여 상대 칩으로 전송함과 동시에, 상대 칩으로부터의 검사 결과를 받아들여 그 결과에 따라 상기 출력 버퍼의 전류를 제어함으로써 상기 출력 버퍼를 통해 칩 내부의 신호가 상대 칩으로 전송되도록 한다. 상기 신호 무결성 제어부에서 상대 칩으로의 검사 결과 전송과 상기 상대 칩으로부터 상기 신호 무결성 제어부로의 검사 결과 수신은 직렬 인터페이스 수단에 의해 수행된다.
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公开(公告)号：KR100472204B1
公开(公告)日：2005-03-10
申请号：KR1020020082099
申请日：2002-12-21
Applicant: 한국전자통신연구원
IPC: G06F15/16
Abstract: 본 발명은 논리 볼륨 관리 시스템에서 무정지 서비스를 제공함에 있어서, 스냅샷 생성 후 수행되는 쓰기 연산시 COW(Copy-on-Write)의 필요성 판단과 스냅샷 삭제 연산 시의 COW 발생여부를 판단하기 위해 필요한 디스크 I/O의 수를 현저히 줄임으로써, 시스템의 성능 향상 및 데이터 엑세스 서비스의 신뢰성을 도모할 수 있는 논리 볼륨 관리 시스템에서의 매핑 테이블 구조를 구비한 논리 볼륨 관리 시스템 및 이를 이용한 효율적인 스냅샷 방법에 관한 것이다.
본 발명의 매핑 장치는 각 논리 데이터 블록 또는 익스텐트에 대하여, 원본 볼륨을 위한 매핑 정보와 각 스냅샷을 위한 매핑 정보를 한 쌍으로 연결하여 하나의 매핑 엔트리로 구성하는 구조로 이루어진다.-
公开(公告)号：KR1020050020041A
公开(公告)日：2005-03-04
申请号：KR1020030057683
申请日：2003-08-20
Applicant: 한국전자통신연구원
IPC: G06F15/16
Abstract: PURPOSE: A device and a method for automatically controlling an output buffer current of an IC chip, and an IC using the same are provided to guarantee SI(System Integrity) and minimum power consumption of an output buffer without analyzing the signals of a PCB(Printed Circuit Board) by automatically controlling the current of the output buffer in the counter chip according to relative load among multiple IC chips. CONSTITUTION: An SI checker(500) outputs a result by checking a state of the signal received from the counter chip through an input buffer(230). An SI controller(400) converts/transmits a check result of the SI checker to the counter chip based on a specified protocol and transmits the signal in the chip to the counter chip through the output buffer(210) by controlling the current of the output buffer according to the check result received from the counter chip. An SI I/O(Input/Output) pad(250,260) performs check result transmission from the SI controller to the counter chip and check result reception from the counter chip to the SI controller.
Abstract translation: 目的：提供一种用于自动控制IC芯片的输出缓冲电流的装置和方法，以及使用其的IC的IC（系统完整性）和最小功耗，而不分析PCB的信号（ 印刷电路板）通过根据多个IC芯片之间的相对负载自动控制计数器芯片中的输出缓冲器的电流。 构成：SI检查器（500）通过检查通过输入缓冲器（230）从计数器芯片接收的信号的状态来输出结果。 SI控制器（400）基于指定的协议将SI检查器的检查结果转换/发送到计数器芯片，并通过输出缓冲器（210）通过控制输出的电流将芯片中的信号发送到计数器芯片 根据从计数器芯片接收的检查结果缓冲。 SI I / O（输入/输出）焊盘（250,260）执行从SI控制器到计数器芯片的检查结果传输，并检查从计数器芯片到SI控制器的结果接收。
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公开(公告)号：KR100453683B1
公开(公告)日：2004-10-20
申请号：KR1020020014114
申请日：2002-03-15
Applicant: 한국전자통신연구원
IPC: H04N1/387
CPC classification number: G06T1/0057 , G06T2201/0051 , G06T2201/0083 , H04N1/32203 , H04N1/32208 , H04N2201/3281
Abstract: Disclosed is a method for embedding and extracting a spatial domain blind watermark using a sample expansion. The sample expansion method using a sample expansion coefficient is introduced to basically improve a common disadvantage of the conventional watermarking method based on the patchwork method, for instance, the watermark is not robust against a compression attack such as JPEG. By applying the sample expansion to a sample group, the embedded watermark comes to contain a low frequency component more larger than ever, so that radio frequency component decreases as much. Thus, although the radio frequency component of the watermark is damaged by the image compression such as JPEG, it is possible to relatively reduce the damage of the watermark. Also, an adaptive watermark embedding method can be considered such that the embedded watermark value is proportional to an average value of the pixel. In order to overcome non-robustness that is a common disadvantage of the conventional methods based on the conventional patchwork method or the conventional modified patchwork method, not a single pixel but sample-expanded pixel is chosen, and there is proposed a spatial domain blind watermarking method using a watermark value that is proportional to an average value of pixel every tile.
Abstract translation: 公开了一种使用样本扩展来嵌入和提取空间域盲水印的方法。 引入使用样本展开系数的样本展开方法基本上改进了基于拼凑方法的传统水印方法的普遍缺点，例如，水印对于诸如JPEG的压缩攻击不具有鲁棒性。 通过将样本扩展应用于样本组，嵌入的水印会包含比以往更大的低频分量，使射频分量减少得更多。 因此，虽然水印的射频分量被诸如JPEG的图像压缩损坏，但可以相对减少水印的损害。 而且，可以考虑自适应水印嵌入方法，使得嵌入的水印值与像素的平均值成比例。 为了克服基于传统拼接方法或传统修改拼接方法的常规方法的普遍缺点的非鲁棒性，选择不是单个像素而是样本膨胀像素，并且提出了空间域盲水印 方法使用与每个像素的像素的平均值成比例的水印值。
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Patent Agency Ranking
公开(公告)号：KR1020040055894A
公开(公告)日：2004-06-30
申请号：KR1020020082341
申请日：2002-12-23
Applicant: 한국전자통신연구원
IPC: G06F15/16
Abstract: PURPOSE: A method for operating/managing a distributed/shared RAID(Redundant Array of Inexpensive Disks) system based on a SAN(Storage Area Network) is provided to reduce a load of a web server and a diagnosis/management program, and enhance the security reliability by managing/controlling a system through a server based on the web. CONSTITUTION: If a management object is downloaded by using the node information obtained through a heartbeat message, a current state of the server is judged(S402). If the current state of the server is in-service, a download process is terminated. In case that the download of the management object is needed, the state of the server is changed to going-in-service, and the state of all nodes of the in-service is changed to a standby state by broadcasting a standby message to all servers and controllers(S406). Thus, the discordance during the download of the management object is removed by making the standby nodes process only a restricted message.
Abstract translation: 目的：提供一种操作/管理基于SAN（存储区域网络）的分布式/共享RAID（廉价磁盘冗余阵列）系统的方法，以减少Web服务器和诊断/管理程序的负载，并增强 通过基于网络的服务器管理/控制系统来实现安全可靠性。 构成：如果通过使用通过心跳消息获得的节点信息来下载管理对象，则判断服务器的当前状态（S402）。 如果服务器的当前状态处于使用状态，则终止下载过程。 在需要管理对象的下载的情况下，将服务器的状态改变为正在运行状态，并且通过向全部广播备用消息将在役中的所有节点的状态改变为待机状态 服务器和控制器（S406）。 因此，通过使备用节点仅处理受限消息来删除管理对象下载期间的不一致。
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公开(公告)号：KR1020040055429A
公开(公告)日：2004-06-26
申请号：KR1020020082099
申请日：2002-12-21
Applicant: 한국전자통신연구원
IPC: G06F15/16
Abstract: PURPOSE: A mapping table structure of a logical volume management system and an efficient snapshot method using the same are provided to offer a reliable service while keeping a mapping time regardless of the existence of a snapshot, and improve system performance by reducing a number of the disk I/O(Input/Output) to one. CONSTITUTION: The mapping table structure comprises one entry(550) for each logical data block(560) by connecting the original volume mapping information(510), the first snapshot mapping information(520), the second snapshot mapping information(530), and the third snapshot mapping information(540) to one pair. Each mapping information comprises the pair of a disk ID(570) for discriminating various physical disks joining in the volume and a physical block ID(580) in the disk.
Abstract translation: 目的：提供逻辑卷管理系统的映射表结构和使用其的高效快照方法，以提供可靠的服务，同时保持映射时间，而不管快照是否存在，并且通过减少数量的 磁盘I / O（输入/输出）为1。 构成：映射表结构包括通过连接原始卷映射信息（510），第一快照映射信息（520），第二快照映射信息（530）和每个逻辑数据块（560）的一个条目（550） 第三快照映射信息（540）到一对。 每个映射信息包括用于区分加入卷中的各种物理磁盘的磁盘ID（570）和磁盘中的物理块ID（580）。
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公开(公告)号：KR1020040041712A
公开(公告)日：2004-05-20
申请号：KR1020020069556
申请日：2002-11-11
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0061 , H04L1/0045 , H04L49/90 , H04L49/9063
Abstract: PURPOSE: A data packet receiving apparatus and a method thereof are provided to utilize a network communication and bandwidth of an input/output channel to the maximum by smoothly processing high speed packet stream. CONSTITUTION: An inspection logic circuit and a multiplexer receive packet data word(S801). The multiplexer transfers the packet data word to input/output memory units and the inspection logic circuit analyzes the packet data word(S802). Upon analyzing the packet data word, if the packet data word is a header part, the inspection logic circuit performs a packet header processing process, if the packet data word is a data part, the inspection logic circuit performs a packet data and error correction code calculating process, and if it is an end part, the inspection logic circuit compares the calculated error correction code and an error correction code of the end of the packet(S803). It is determined whether an error has been discovered by the inspection logic circuit, and if an error has been discovered, the packet is discarded(S804). If no error has been discovered, an upper processing layer processes packet data words outputted from the input/output memory units(S805). The upper processing layer determines whether an error is discovered(S806). If an error is discovered, the packet is discarded(S807).
Abstract translation: 目的：提供一种数据分组接收装置及其方法，通过平滑处理高速分组流，最大限度地利用输入/输出信道的网络通信和带宽。 构成：检查逻辑电路和复用器接收分组数据字（S801）。 复用器将分组数据字传送到输入/输出存储单元，检查逻辑电路分析分组数据字（S802）。 分析分组数据字时，如果分组数据字是报头部分，则检查逻辑电路执行分组报头处理处理，如果分组数据字是数据部分，则检查逻辑电路执行分组数据和纠错码 计算处理，如果是结束部分，则检查逻辑电路将计算出的纠错码与分组结束的纠错码进行比较（S803）。 确定检查逻辑电路是否发现错误，如果发现错误，则丢弃该数据包（S804）。 如果没有发现错误，则上层处理层处理从输入/输出存储单元输出的分组数据字（S805）。 上层处理层确定是否发现错误（S806）。 如果发现错误，则丢弃该数据包（S807）。
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公开(公告)号：KR1020030056540A
公开(公告)日：2003-07-04
申请号：KR1020010086768
申请日：2001-12-28
Applicant: 한국전자통신연구원
IPC: G06F17/40
CPC classification number: G06F11/1435 , G06F11/1471 , Y10S707/99931 , Y10S707/99953
Abstract: PURPOSE: A method for deleting and recovering a file preparing for a system failure on a DBMS(DataBase Management System) is provided to destroy the file safely and record a process preparing for the system failure generated during a file deleting process, and to recover a uncompleted file return error on the file return formed by repeated non-atomic operations during the system failure. CONSTITUTION: If the file to be deleted is found in a pending action list, the atomic recording of each allocation unit for the non-atomic file deletion is performed(S802). An address of the last log record at the time is stored in a main memory by setting up the NTA after receiving the allocation of the file to be deleted from the list(S802). The atomic recording steps(S811-814) of the allocation unit are repeated until no more return allocation unit is found in the deleted file. If all allocation units are returned, a file deletion log including a file discriminator is recorded to the log, and the corresponding discriminator is returned to the system(S815).
Abstract translation: 目的：提供一种在DBMS（DataBase管理系统）上删除和恢复准备系统故障的文件的方法，以安全地销毁该文件，并记录准备在文件删除过程中生成的系统故障的进程，并恢复 在系统故障期间通过重复的非原子操作形成的文件返回形式的未完成文件返回错误。 构成：如果待处理的动作列表中找到要删除的文件，则执行非原子文件删除的每个分配单元的原子记录（S802）。 通过在从列表接收到要删除的文件的分配之后设置NTA，将此时的最后日志记录的地址存储在主存储器中（S802）。 重复分配单元的原子记录步骤（S811-814），直到在删除的文件中没有找到更多的返回分配单元。 如果返回所有分配单元，则将包括文件鉴别器的文件删除日志记录到日志中，并将对应的鉴别器返回给系统（S815）。
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公开(公告)号：KR1020030054605A
公开(公告)日：2003-07-02
申请号：KR1020010084801
申请日：2001-12-26
Applicant: 한국전자통신연구원
IPC: G06F17/30
Abstract: PURPOSE: An XML document search system and a method for the same are provided to enable a user to search for an XML document in a database, storing plural XML documents, by using an integrated query which tightly couples an XML query with a database query. CONSTITUTION: The system comprises a search management module(110), a syntax analysis module(120), a query process module(130), a result process module(140) and a database engine(200). The search management module(110) performs a function of an interface with the database engine(200), and controls the syntax analysis module(120), the query process module(130), and the result process module(140). The syntax analysis module(120) analyzes the syntax on the XML query input via the search management module(110), checks whether the input XML query follows a preset query context rule, and generates a syntax tree for the input XML query in a case that the input XML query does not follow the preset query context rule. At this time the syntax analysis module(120) receives the integrated query which tightly couples the XML query with a database query, and checks an effectiveness of the input XML query. The query process module(130) processes the XML query by using the generated syntax tree. The result process module(140) converts the query process result of the query process module(130) into the type appropriate for the database engine(200), and transmits the converted result to the search management module(110).
Abstract translation: 目的：提供XML文档搜索系统及其方法，以使用户能够通过使用将XML查询与数据库查询紧密耦合的集成查询来搜索数据库中的XML文档，存储多个XML文档。 构成：系统包括搜索管理模块（110），语法分析模块（120），查询处理模块（130），结果处理模块（140）和数据库引擎（200）。 搜索管理模块（110）执行与数据库引擎（200）的接口的功能，并且控制语法分析模块（120），查询处理模块（130）和结果处理模块（140）。 语法分析模块（120）分析经由搜索管理模块（110）输入的XML查询的语法，检查输入的XML查询是否遵循预设的查询上下文规则，并且在一种情况下生成用于输入XML查询的语法树 输入XML查询不遵循预设查询上下文规则。 此时，语法分析模块（120）接收将XML查询与数据库查询紧密耦合的综合查询，并检查输入XML查询的有效性。 查询处理模块（130）通过使用生成的语法树处理XML查询。 结果处理模块（140）将查询处理模块（130）的查询处理结果转换成适用于数据库引擎（200）的类型，并将转换的结果发送到搜索管理模块（110）。
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