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公开(公告)号：US20190394215A1
公开(公告)日：2019-12-26
申请号：US16202869
申请日：2018-11-28
Inventor： Jong-Hoon LEE , Youngsoo KIM , Ik Kyun KIM , Jung Tae KIM , Jonghyun KIM , Hyun Joo KIM , Jong Geun PARK , Sang-Min LEE , Sunoh CHOI
Abstract: A method and a computation apparatus detecting cyber threats using a neural network through steps of: generating a learning model by performing machine learning on training data based on baseline data, converting a security event collected in real time into input data for the neural network, and determining, as an output corresponding to the input data based on the learning model, whether the security event is normal or threat are provided.
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12.发明申请公开(公告)号：US20190243908A1
公开(公告)日：2019-08-08
申请号：US16199036
申请日：2018-11-23
Inventor： Sang-Min LEE , Hong-Yeon KIM , Young-Kyun KIM
IPC: G06F17/30
CPC classification number: G06F16/172 , G06F16/182
Abstract: Disclosed herein are a storage server and an adaptive prefetching method performed by the storage server in a distributed file system. An adaptive prefetching method includes receiving, by a management request processing unit of a storage server, a stream generation request from a client, sending, by the management request processing unit, a stream identifier and information about an I/O worker, which correspond to the stream generation request, to the client, receiving, by the management request processing unit, a read request from the client, inserting, by the management request processing unit, the read request into a queue of the I/O worker corresponding to the read request, performing, by the I/O worker, adaptive prefetching for the read request using an identifier of a file object of stream information corresponding to the read request, and transmitting, by the I/O worker, data that is read by performing adaptive prefetching to the client.
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13.发明申请公开(公告)号：US20190129976A1
公开(公告)日：2019-05-02
申请号：US16158088
申请日：2018-10-11
Inventor： Myung-Hoon CHA , Young-Kyun KIM , Hong-Yeon KIM , Sang-Min LEE
IPC: G06F17/30
Abstract: Disclosed herein is an apparatus for controlling synchronization of metadata, which includes a transaction creation unit for creating a transaction corresponding to a request for an operation for metadata, the request being received from a client; a journal management unit for storing the transaction in a journal; a journal synchronization unit for comparing the journal with an external journal in a node connected with the apparatus and transmitting and receiving only inconsistencies therebetween, thereby synchronizing the journal; and an operation-processing unit for processing the request for the operation or the transaction for the metadata.
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14.发明申请公开(公告)号：US20180101543A1
公开(公告)日：2018-04-12
申请号：US15586083
申请日：2017-05-03
Inventor： Myung Hoon CHA , Sang-Min LEE , Young Kyun KIM , Hong Yeon KIM
IPC: G06F17/30
Abstract: A distributed storage server includes a plurality of data server devices and a plurality of metadata server devices. The metadata server devices store metadata associated with data which is distributively stored in the data server devices. A selected metadata server device checks whether a dangling directory occurs by performing a rename operation, based on information associated with a full path of a parent directory of a source and a full path of a parent directory of a target included in a request of the rename operation. When it is determined that the dangling directory does not occur, the selected metadata server device processes transactions directed to the metadata such that the rename operation is performed. The checking whether the dangling directory occurs is performed before a transaction period for processing the transactions.
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公开(公告)号：US20150026126A1
公开(公告)日：2015-01-22
申请号：US14071796
申请日：2013-11-05
Inventor： Sang-Min LEE , Hong Yeon KIM , Young Kyun KIM
IPC: G06F17/30
CPC classification number: G06F16/1844
Abstract: A method of efficiently replicating data stored in data servers in an asymmetric file system is provided. A replication processing apparatus of a network transmits a replication request only to a data server that does not replicate data so that it is possible to reduce replication time of a data block and to extend time-out with reference to a response message transmitted by the data server. In addition, each of the data servers may efficiently transmit copy data to another data server by a pipeline data transmission method.
Abstract translation: 提供了一种有效地复制存储在非对称文件系统中的数据服务器中的数据的方法。 网络的复制处理装置仅将复制请求发送到不复制数据的数据服务器，使得可以减少数据块的复制时间并且参考由数据发送的响应消息来延长超时 服务器。 此外，每个数据服务器可以通过流水线数据传输方法有效地将复制数据传输到另一数据服务器。
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Patent Agency Ranking
公开(公告)号：US20140376555A1
公开(公告)日：2014-12-25
申请号：US14311281
申请日：2014-06-21
Inventor： Kang Il CHOI , Bhum Cheol LEE , Jung Hee LEE , Sang-Min LEE , Seung-Woo LEE , Young Ho PARK
IPC: H04L12/721 , H04L12/931
Abstract: A network function virtualization device includes at least one network function virtual machine; and a network function flow switch configured to receive flows and to switch the flows to the at least one network function virtual machine, and a network functions virtualization method for applying the virtualized network function to the flows.
Abstract translation: 网络功能虚拟化设备包括至少一个网络功能虚拟机; 以及网络功能流交换机，被配置为接收流并将流切换到所述至少一个网络功能虚拟机，以及网络功能虚拟化方法，用于将所述虚拟化网络功能应用于所述流。
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公开(公告)号：US20240127094A1
公开(公告)日：2024-04-18
申请号：US18345635
申请日：2023-06-30
Inventor： Jin-Ho ON , Chei-Yol KIM , Soo-Cheol OH , Sang-Min LEE , Gyu-Il CHA
IPC: G06N10/20
CPC classification number: G06N10/20
Abstract: Disclosed herein are a logical qubit execution apparatus and method. The logical qubit execution apparatus may be configured to execute, by a logical execution layer, a quantum circuit including requested logical qubits using a lattice surgery operation, generate, by the logical execution layer, measurement results of the logical qubits by combining measurement results of logical Pauli frames, generate, by a physical execution layer, a physical qubit circuit by converting a logical qubit operation corresponding to the measurement results of the logical qubits into a physical qubit operation, and measure, by the physical execution layer, results of an operation on physical Pauli frames by executing the physical qubit circuit.
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18.发明公开公开(公告)号：US20240104195A1
公开(公告)日：2024-03-28
申请号：US18335813
申请日：2023-06-15
Inventor： Sang-Min LEE , Ki-Jong KOO , Jung-Tae KIM , Ji-Hyeon SONG , Jong-Hyun KIM , Dae-Sung MOON
CPC classification number: G06F21/53 , G06F9/45558 , G06F21/564 , G06F2009/45562
Abstract: Disclosed herein are an apparatus and method for updating an Internet-based malware detection engine using virtual machine scaling. The method may include creating a scaling group and an update group set based on a first virtual machine image, creating a second virtual machine image for a running virtual machine in response to occurrence of a snapshot event in the virtual update group run based on the first virtual machine image, modifying the scale-out image of the scaling group to the second virtual machine image, updating the scaling group by triggering a scale-out event and a scale-in event in the scaling group in response to occurrence of an update event, and modifying the scale-in image of the scaling group to the second virtual machine image.
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19.发明公开公开(公告)号：US20230168924A1
公开(公告)日：2023-06-01
申请号：US17898686
申请日：2022-08-30
Inventor： Myung-Hoon CHA , Hong-Yeon KIM , Baik-Song AN , Sang-Min LEE
CPC classification number: G06F9/4881 , G06F9/3871 , G06F9/52
Abstract: Disclosed herein are an apparatus for preloading data in a distributed computing environment and a method using the same. The method includes selecting a local preloading target that each of multiple computers connected over a network is to preload into the local memory thereof, registering a local preloading task corresponding to the local preloading target in local preloading metadata, and asynchronously starting the local preloading task at a preset time based on the local preloading metadata. The local preloading metadata is stored in a page other than the page in which remote preloading metadata for managing a remote preloading task is stored.
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公开(公告)号：US20230168828A1
公开(公告)日：2023-06-01
申请号：US17903110
申请日：2022-09-06
Inventor： Sang-Min LEE , Hong-Yeon Kim , Baik-Song An , Myung-Hoon Cha
IPC: G06F3/06
CPC classification number: G06F3/064 , G06F3/0679 , G06F3/0604
Abstract: Disclosed herein are an apparatus and method for processing fast persistent writing to nonvolatile memory. A method for processing fast persistent writing to a nonvolatile memory includes writing log data from a last storage position in a data block created in a certain size, reflecting the entire data block in a storage medium, increasing the last storage position by a size of the written log data, and reflecting the entire data block in a storage medium, wherein the data block is linearly linked to an additional data block in a creation order, and wherein the data block includes a log data storage region, information about a last storage position where the log data is stored in the log data storage region, and information about a linked next data block.
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