公开(公告)号：KR100453228B1

公开(公告)日：2004-10-15

申请号：KR1020020015322

申请日：2002-03-21

Applicant: 한국전자통신연구원

Inventor： 박춘서 ,  김경배 ,  신범주 ,  이용주 ,  박선영

IPC: G06F15/16

CPC classification number: G06F11/1474 ,  G06F11/1471

Abstract: A journaling method is provided for supporting a recovery when a system is abnormally terminated in a shared disk environment. When a system call operation to take part in a journaling is generated, in order to guarantee a recovery, a transaction is started and new transaction region is assigned. Then, a system is initialized and a transaction type is set up. Lock information on modified data is acquired and added to the transaction so that a transaction manages lock information. A reflection to a disk during a modification of metadata is prevented. Modified metadata added to the transaction and modified information on principal general data are recorded. Then, lock information connected to the transaction is released.

Abstract translation: 提供日志记录方法，用于在共享磁盘环境中系统异常终止时支持恢复。 生成参与日记的系统调用操作时，为了保证恢复，将启动事务并分配新的事务区域。 然后，初始化系统并设置交易类型。 获取已修改数据的锁定信息并将其添加到事务中，以便事务管理锁定信息。 防止在修改元数据期间反映磁盘。 记录添加到交易中的修改元数据和主要通用数据的修改信息。 然后，释放连接到交易的锁定信息。

公开(公告)号：KR100452631B1

公开(公告)日：2004-10-14

申请号：KR1020020010855

申请日：2002-02-28

Applicant: 한국전자통신연구원

Inventor： 김경배 ,  이용주 ,  박춘서 ,  박선영 ,  신범주

IPC: G06F17/40

Abstract: PURPOSE: A mass file storage system and a dynamic bitmap management method are provided to dynamically allocate a bit map without being restricted by a file size so that it can effectively manage large sized files. CONSTITUTION: The method comprises several steps. A bit map is read from a storage device(S521). A pattern value is read from the header of the bit map in order to be compared with an object pattern requested by a file system(S522). If the pattern of the bit map is identical to that of the object pattern, the number of used bits is compared with that of the total bits(S523). If the number of the used bits is less than that of the total bits, unused bits are set with "1"(S524). Then, a bit map area is allocated to a corresponding object(S525). If the pattern of the bit map is not identical to that of the object or the number of the used bits is more than that of the total bits, it is checked whether there is a bit map in use allocated at a current bit map area(S526). If there is a bit map in use, a new bit map is read, otherwise an unused bit map is selected from a bit map area and is set with a requested pattern(S527). Then, the first bit of the new allocated bit map is set with "1" for allocating a bit map area to the object(S528).

Abstract translation: 目的：提供海量文件存储系统和动态位图管理方法，以动态分配位图而不受文件大小的限制，从而可以有效地管理大型文件。 构成：该方法包括几个步骤。 从存储设备读取位图（S521）。 从位图的标题读取模式值，以便与文件系统请求的对象模式进行比较（S522）。 如果位图的图案与对象图案的图案相同，则将使用的位数与总位数进行比较（S523）。 如果使用的比特数小于总比特数，则将未使用的比特设置为“1”（S524）。 然后，将位图区域分配给对应的对象（S525）。 如果位图的图案与对象的图案不相同或者所使用的位的数量多于总位数，则检查在当前位图区域处分配的位图是否存在（ S526）。 如果正在使用位图，则读取新的位图，否则从位图区域选择未使用的位图并用所请求的图案设置（S527）。 然后，新分配的位图的第一位被设置为“1” 用于将位图区域分配给对象（S528）。

公开(公告)号：KR1020140139320A

公开(公告)日：2014-12-05

申请号：KR1020130059836

申请日：2013-05-27

Applicant: 한국전자통신연구원

Inventor： 박선영 ,  윤혁중 ,  한상윤 ,  이종태 ,  최희봉 ,  박상우

IPC: G06F7/58

CPC classification number: G06F7/588 ,  G06F7/58

Abstract: 본 발명은 GPU(Graphical Processing Unit) 코어들 간의 메모리 접근 경쟁을 이용한 난수 발생기용 잡음원 엔트로피 획득 장치 및 방법에 관한 것이다. 이를 위해, 본 발명의 잡음원 엔트로피 획득 장치는 복수의 코어들을 임계 영역으로 동시에 호출하는 코어 호출부; 및 복수의 코어들이 임계 영역에 진입한 순서를 근거로, 잡음원 엔트로피를 생성하는 잡음원 엔트로피 생성부를 포함하는 것을 특징으로 한다.

Abstract translation: 本发明涉及通过使用图形处理单元（GPU）核之间的存储器访问竞争来获得噪声源熵的装置和方法。 噪声源熵获取装置包括：核心呼叫单元，用于同时呼叫临界区域中的多个核心; 以及噪声源熵产生单元，用于按入射到临界区的顺序产生噪声源熵。

公开(公告)号：KR100420267B1

公开(公告)日：2004-03-02

申请号：KR1020010078575

申请日：2001-12-12

Applicant: 한국전자통신연구원

Inventor： 박선영 ,  신범주 ,  손덕주

IPC: G06F15/16

Abstract: PURPOSE: A method for first outputting shared data using a global lock pattern on a shared file system is provided to reduce a process delay time of a file system by previously reading and offering the shared data from a memory of other host or a disk of the shared file system when the global lock for reading and writing the shared data is requested from the host. CONSTITUTION: The shared file system of the host requests the global lock for the shared data through a global lock manager. The global lock manager finds out a block allotting the shared data requested from the host by receiving the global lock request. The global lock manager increases a count for the allotted block of the shared data requested by the host one by one. The global lock manager reads the shared data from the memory or the disk of the host having the allotted block of the shared data. The shared data is transmitted to the host.

Abstract translation: 目的：提供一种首先使用共享文件系统上的全局锁定模式输出共享数据的方法，以通过预先读取并提供来自其他主机或磁盘的存储器的共享数据来减少文件系统的处理延迟时间 共享文件系统，当从主机请求读取和写入共享数据的全局锁定时。 构成：主机的共享文件系统通过全局锁定管理器请求共享数据的全局锁定。 全局锁管理器通过接收全局锁定请求来找出一个块，以分配从主机请求的共享数据。 全局锁管理器逐个增加主机请求的共享数据的分配块的计数。 全局锁管理器从具有分配的共享数据块的主机的存储器或磁盘读取共享数据。 共享数据传输到主机。

公开(公告)号：KR1020030075854A

公开(公告)日：2003-09-26

申请号：KR1020020015322

申请日：2002-03-21

Applicant: 한국전자통신연구원

Inventor： 박춘서 ,  김경배 ,  신범주 ,  이용주 ,  박선영

IPC: G06F15/16

CPC classification number: G06F11/1474 ,  G06F11/1471

Abstract: PURPOSE: A method for journaling and recovering a shared disk file system is provided to increase a journaling speed by transmitting the changed metadata through network without reflecting to a disk if one host changes the metadata and other host accesses the same metadata in a shared disk environment such as an SAN(Storage Area Network) environment. CONSTITUTION: If a system call operation for processing journaling is occurred, a new transaction region is allotted and initialized by staring a transaction for guaranteeing the recovery, and a transaction type is set. The transaction manages the lock information by getting the lock information for the changed information and adding it to the transaction, and the update of the changed metadata is pinned while the metadata is changed(201). The changed metadata added to the transaction and the changed information for the important general data are stored in a journal space, and the lock information connected to the transaction is unlocked(203).

Abstract translation: 目的：提供用于日记和恢复共享磁盘文件系统的方法，以通过网络传输已更改的元数据而不反映磁盘，如果一个主机更改元数据并且其他主机在共享磁盘环境中访问相同的元数据，则可提高日志记录速度 例如SAN（存储区域网络）环境。 构成：如果发生用于处理日志记录的系统调用操作，则通过盯着一个事务来分配和初始化新的事务区域，以保证恢复，并且设置事务类型。 该事务通过获取改变的信息的锁定信息并将其添加到事务来管理锁定信息，并且在元数据被改变时固定更改的元数据（201）。 添加到事务中的更改的元数据和重要的一般数据的改变的信息被存储在日记空间中，并且连接到事务的锁定信息被解锁（203）。

公开(公告)号：KR1020030048619A

公开(公告)日：2003-06-25

申请号：KR1020010078575

申请日：2001-12-12

Applicant: 한국전자통신연구원

Inventor： 박선영 ,  신범주 ,  손덕주

IPC: G06F15/16

Abstract: PURPOSE: A method for first outputting shared data using a global lock pattern on a shared file system is provided to reduce a process delay time of a file system by previously reading and offering the shared data from a memory of other host or a disk of the shared file system when the global lock for reading and writing the shared data is requested from the host. CONSTITUTION: The shared file system of the host requests the global lock for the shared data through a global lock manager. The global lock manager finds out a block allotting the shared data requested from the host by receiving the global lock request. The global lock manager increases a count for the allotted block of the shared data requested by the host one by one. The global lock manager reads the shared data from the memory or the disk of the host having the allotted block of the shared data. The shared data is transmitted to the host.

Abstract translation: 目的：提供一种在共享文件系统上首先使用全局锁定模式输出共享数据的方法，用于通过从其他主机或磁盘的盘的先前读取和提供共享数据来减少文件系统的处理延迟时间 共享文件系统当从主机请求读取和写入共享数据的全局锁定时。 构成：主机的共享文件系统通过全局锁管理器请求共享数据的全局锁。 全局锁管理器通过接收全局锁定请求找出从主机分配请求的共享数据的块。 全局锁管理器逐个增加由主机请求的共享数据的分配块的计数。 全局锁管理器从具有共享数据的分配块的主机的存储器或磁盘读取共享数据。 共享数据被传送到主机。

公开(公告)号：KR101593160B1

公开(公告)日：2016-02-15

申请号：KR1020140047871

申请日：2014-04-22

Applicant: 한국전자통신연구원

Inventor： 김용대 ,  박선영 ,  최희봉 ,  고행석 ,  박상우

IPC: G06F21/77

CPC classification number: G06F21/556

Abstract: 본발명은스마트카드형태의암호모듈의데이터를실시간으로분석하여부채널분석에있어서필요한트리거신호를생성하는장치및 그방법에관한것이다. 트리거신호생성방법은암호모듈의데이터입출력신호를실시간으로확인하는단계, 데이터입출력신호에서설정구간을분석하는단계및 데이터입출력신호와설정구간을분석한결과를통해획득한신호를이용하여기준신호를생성하고, 기준신호를이용하여트리거신호를생성하는단계를포함한다.

公开(公告)号：KR1020150121830A

公开(公告)日：2015-10-30

申请号：KR1020140047871

申请日：2014-04-22

Applicant: 한국전자통신연구원

Inventor： 김용대 ,  박선영 ,  최희봉 ,  고행석 ,  박상우

IPC: G06F21/77

CPC classification number: G06F21/556 ,  G06F21/77

Abstract: 본발명은스마트카드형태의암호모듈의데이터를실시간으로분석하여부채널분석에있어서필요한트리거신호를생성하는장치및 그방법에관한것이다. 트리거신호생성방법은암호모듈의데이터입출력신호를실시간으로확인하는단계, 데이터입출력신호에서설정구간을분석하는단계및 데이터입출력신호와설정구간을분석한결과를통해획득한신호를이용하여기준신호를생성하고, 기준신호를이용하여트리거신호를생성하는단계를포함한다.

Abstract translation: 本发明涉及通过分析智能卡型编码模块的数据实时生成子信道分析所需的触发信号的装置及其方法。 用于产生触发信号的方法包括以下步骤：检查编码模块的数据输入和输出信号; 分析数据输入和输出信号中的设置部分; 以及通过使用数据输入和输出信号以及通过设置部分的分析结果获得的信号产生参考信号，并且通过使用参考信号产生触发信号。

公开(公告)号：KR1020040012388A

公开(公告)日：2004-02-11

申请号：KR1020020045951

申请日：2002-08-03

Applicant: 한국전자통신연구원

Inventor： 박선영 ,  손덕주 ,  김경배

IPC: G06F15/16

Abstract: PURPOSE: A method for managing a global buffer capable of executing a load distribution in a cluster system is provided to calculate loads of each host and distribute a request of a global buffer manager for preventing a performance decline caused by a concentration to a specific host in a system of a system load necessary for an operation of a global buffer manager when a buffer cache is shared among many hosts through a global buffer manager in a cluster system. CONSTITUTION: The upper module of a specific host of a cluster system requests a transmission of a buffer block to a global buffer manager(S131). The global buffer manager requests a permission as to a corresponding disk block to a locking manager(S132). The locking manager transmits a response message including an accept of the permission to the global buffer manager(S133). If the global buffer manager acquires a permission, it is checked whether a requested buffer block exists in a buffer cache of a host having a permission(S136). If a requested buffer block does not exist in a buffer cache of a host having a permission, it is checked whether a requested buffer block exists in a buffer cache of other host(S137). If a requested buffer block exists in a buffer cache of other host, a transmission of a buffer block is requested to other host through a communication module(S138,S140). If a transmission of a buffer block requested to other host is failed, the buffer block requested through a disk I/O is copied to the buffer cache(S139). The copied buffer block or a buffer block received from a buffer cache of other host is transmitted to the upper module(S142). If the upper block requests a release of a buffer block use, the global buffer manager returns a permission as to the buffer block(S145).

Abstract translation: 目的：提供一种用于管理能够在集群系统中执行负载分布的全局缓冲器的方法，以计算每个主机的负载并分发全局缓冲管理器的请求，以防止由特定主机的集中引起的性能下降 当通过集群系统中的全局缓冲管理器在许多主机之间共享缓冲区高速缓存时，全局缓冲器管理器的操作所需的系统负载的系统。 构成：集群系统的特定主机的上层模块请求向全局缓冲区管理器发送缓冲区块（S131）。 全局缓冲区管理器向锁定管理器请求对相应磁盘块的许可（S132）。 锁定管理器发送包括对全局缓冲器管理器的许可的接受的响应消息（S133）。 如果全局缓冲器管理器获取许可，则检查在具有许可的主机的缓冲器高速缓存中是否存在所请求的缓冲器块（S136）。 如果在具有许可的主机的缓冲器高速缓存中不存在所请求的缓冲器块，则检查所请求的缓冲器块是否存在于其他主机的缓冲器高速缓存中（S137）。 如果所请求的缓冲区块存在于其他主机的缓冲区高速缓存中，则通过通信模块向其他主机请求缓冲区块的传输（S138，S140）。 如果请求到其他主机的缓冲区的传输失败，通过磁盘I / O请求的缓冲区被复制到缓冲区高速缓存（S139）。 将复制的缓冲器块或从其他主机的缓冲器高速缓存接收的缓冲器块发送到上位模块（S142）。 如果上限块请求释放缓冲块使用，则全局缓冲区管理器返回对缓冲区块的许可（S145）。

公开(公告)号：KR1020030071245A

公开(公告)日：2003-09-03

申请号：KR1020020010855

申请日：2002-02-28

Applicant: 한국전자통신연구원

Inventor： 김경배 ,  이용주 ,  박춘서 ,  박선영 ,  신범주

IPC: G06F17/40

Abstract: PURPOSE: A mass file storage system and a dynamic bitmap management method are provided to dynamically allocate a bit map without being restricted by a file size so that it can effectively manage large sized files. CONSTITUTION: The method comprises several steps. A bit map is read from a storage device(S521). A pattern value is read from the header of the bit map in order to be compared with an object pattern requested by a file system(S522). If the pattern of the bit map is identical to that of the object pattern, the number of used bits is compared with that of the total bits(S523). If the number of the used bits is less than that of the total bits, unused bits are set with "1"(S524). Then, a bit map area is allocated to a corresponding object(S525). If the pattern of the bit map is not identical to that of the object or the number of the used bits is more than that of the total bits, it is checked whether there is a bit map in use allocated at a current bit map area(S526). If there is a bit map in use, a new bit map is read, otherwise an unused bit map is selected from a bit map area and is set with a requested pattern(S527). Then, the first bit of the new allocated bit map is set with "1" for allocating a bit map area to the object(S528).

Abstract translation: 目的：提供大容量文件存储系统和动态位图管理方法来动态分配位图，而不受文件大小的限制，从而可以有效地管理大型文件。 构成：该方法包括几个步骤。 从存储装置读取位图（S521）。 从比特图的头部读取图案值，以便与由文件系统请求的对象图案进行比较（S522）。 如果位图的图案与对象图案的图案相同，则将所使用的位数与总位的数目进行比较（S523）。 如果所使用的位的数量小于总位数，则将未使用的位设置为“1”（S524）。 然后，将位图区域分配给相应的对象（S525）。 如果位图的图案与对象的图案不一致，或者使用的位的数量大于总位数，则检查在当前位图区域是否存在使用中分配的位图（ S526）。 如果存在使用的位图，则读取新的位图，否则从位图区域中选择未使用的位图，并且以请求的图案设置（S527）。 然后，将新分配的位图的第一位设置为“1”，以将位图区域分配给对象（S528）。