Abstract: The present invention provides a system for managing data based on a hierarchical data store and a method of operating the same. The data management system according to one embodiment of the present invention may include a data uploader for obtaining original data from one or more data sources, converting the obtained original data into corresponding lightweight data through lightweighting processing, and uploading the lightweight data to a lightweight data store and a data tracer for updating the upload location of specific original data in a mapping table in response to detecting that the specific original data is uploaded to an original data store. The data management system may efficiently reduce network costs required for data upload and infrastructure construction costs required for data sharing.

Abstract: The present invention provides an apparatus for detecting events and a method thereof. The apparatus for detecting events according to embodiments of the present invention may include a rule register for registering rules for event detection and a tag value assigned to the rules; and an event detector for obtaining monitoring data and a tag value assigned to the monitoring data, determining a rule related to the monitoring data among the pre-registered rules using the obtained tag value, and detecting an event in the monitoring data by applying the determined rule.

Abstract: The present invention provides a system for managing data based on a hierarchical data store and a method of operating the same. The data management system according to one embodiment of the present invention may include a data uploader for obtaining original data from one or more data sources, converting the obtained original data into corresponding lightweight data through lightweighting processing, and uploading the lightweight data to a lightweight data store and a data tracer for updating the upload location of specific original data in a mapping table in response to detecting that the specific original data is uploaded to an original data store. The data management system may efficiently reduce network costs required for data upload and infrastructure construction costs required for data sharing.

Abstract: The present disclosure relates to technology that performs encrypted communication via a network or a bus, and a communication method using a security key between nodes connected via a network or a bus includes setting a critical cluster among multiple nodes, selecting a primary message shared between the set critical clusters, and encrypting a message using a key generated to be valid for a preset period to enable communication between the critical clusters, wherein each of the critical clusters stores the primary message for the preset period according to a same key generation scheme to generate a block, and generates and possesses a new key based on the generated block and a currently used key, so that information about a previous message and a previous key is sequentially accumulated in the new key.

Abstract: The present disclosure relates to technology that performs encrypted communication via a network or a bus, and a communication method using a security key between nodes connected via a network or a bus includes setting a critical cluster among multiple nodes, selecting a primary message shared between the set critical clusters, and encrypting a message using a key generated to be valid for a preset period to enable communication between the critical clusters, wherein each of the critical clusters stores the primary message for the preset period according to a same key generation scheme to generate a block, and generates and possesses a new key based on the generated block and a currently used key, so that information about a previous message and a previous key is sequentially accumulated in the new key.

Abstract: A memory device includes a plurality of receivers that each include a first input terminal coupled to one pin of a plurality of input/output pins. The memory devices further includes a transmitter having an output terminal coupled to the first input terminals of the plurality of receivers. The memory device further includes a control circuit configured to control the transmitter to output a particular test signal. The plurality of receivers are each configured to generate output data based on receiving the particular test signal from the transmitter. The control circuit is further configured to adjust the plurality of receivers based on the output data generated by the plurality of receivers and received at the control circuit from the plurality of receivers.

Abstract: A memory device includes a plurality of receivers that each include a first input terminal coupled to one pin of a plurality of input/output pins. The memory devices further includes a transmitter having an output terminal coupled to the first input terminals of the plurality of receivers. The memory device further includes a control circuit configured to control the transmitter to output a particular test signal. The plurality of receivers are each configured to generate output data based on receiving the particular test signal from the transmitter. The control circuit is further configured to adjust the plurality of receivers based on the output data generated by the plurality of receivers and received at the control circuit from the plurality of receivers.

Abstract: A device for transferring a film is provided. The device includes a roller transferring a film; a balancing unit connected to the roller by fixed supporters, the fixed supporters being disposed on both sides of the roller; and springs disposed on both sides of the balancing unit, wherein, if the film is out of balance, the balancing unit restores balance to the film by vibrating the both sides of the balancing unit. That is, if a film becomes out of balance during the transfer of the film, the device may restore balance to the film with the aid of the balancing unit which can vibrate on both sides of the balancing unit due to the springs.

Abstract: A device for fabricating a flexible film is provided. The device includes a serving unit providing an insulation film; a main processing unit including at least one of a dust removing unit, an etching unit, a neutralizing unit, a coupling unit, a catalyst bonding unit, a plating unit, and a drying unit; an assistant power unit controlling a tension of the insulation film; a top transporter disposed at an upper part of the main processing unit; and a bottom transporter disposed at a lower part of the main processing unit, wherein the top transporter includes a squeezing unit pressing a material on the insulation film. The device can improve the quality of a flexible film by pressing the flexible film using the squeezing unit.