Abstract: The present invention relates to an immersion cooling apparatus including a chamber, a rack module installed in the chamber and having a plurality of slots each having a cooling target mounted thereon, a supply part connected to the chamber and configured to supply a cooling fluid to the inside of the chamber, and a discharge part disposed to be spaced apart from the supply part and configured to discharge the cooling fluid from the chamber.

Abstract: The present invention relates to a water treatment system for removing at least some of ionic materials included in source water to provide soft water comprising less ionic materials than the source water to a demand source. The water treatment system may comprise: a filter module provided so as to remove at least some of ionic materials included in source water by means of an electrical force to discharge soft water; a supply channel provided so as to supply the source water to the filter module; a discharge channel provided so as to guide the soft water discharged from the filter module to a demand source; a circulation channel branched from the supply channel; a reclaim channel branched from the discharge channel; a connection channel branched from the reclaim channel and connected to the circulation channel; and a descaling part connected to the connection channel and provided so as to provide a descaling material for removing scale to the inside of the connection channel.

Abstract: A secondary battery includes: an electrode assembly including: a first electrode plate; a second electrode plate; and a separator between the first electrode plate and the second electrode plate; a case configured to accommodate the electrode assembly; a cap assembly electrically connected to the second electrode plate of the electrode assembly; and an insulator coupled to an upper side of the electrode assembly, wherein the insulator includes: an insulating upper portion configured to cover the upper side of the electrode assembly; an insulating side portion between the case and a side portion of the electrode assembly; and an insulating core portion inserted into a hollow portion of the electrode assembly to support the electrode assembly.

Abstract: Disclosed herein is a method for user-centered visitor access management, which may include issuing, by a management office server, a digital certificate to a householder terminal; registering, by a wall-pad, a householder in response to a request to register the householder based on the digital certificate; requesting, by the householder terminal, the management office server to register a visitor based on a visit request from a visitor terminal and delegating the digital certificate to the visitor terminal; making an entry request to a management terminal based on the digital certificate; verifying, by the wall-pad, the digital certificate based on a request for verification for entry from a wall-pad management terminal and providing a verification result to the wall-pad management terminal when the management terminal is the wall-pad management terminal; and managing and controlling, by the wall-pad, permission to use home devices based on delegated permission information of the digital certificate.

Abstract: Disclosed herein are a method and apparatus for converting a credential data schema.

Abstract: Disclosed herein are an apparatus and method for providing an anonymous delegated credential in a DID-based service. A method for issuing an anonymous delegated credential in a DID-based service includes receiving an anonymous delegated credential issuance request message from a digital wallet of a delegate, setting attribute values in the anonymous delegated credential, anonymizing delegator identification information and delegatee identification information among the attribute values, and issuing the generated anonymous delegated credential to the digital wallet of the delegatee.

Abstract: A signal receiving device includes a sampling device configured to sample an input signal to output a plurality of sampling values, and an output circuit configured to output data based on the sampling values. The output circuit outputs the data by performing majority voting based on first to third sampling values of the sampling values in response to a first control signal, and outputs the data and first and second error count signals based on the first sampling value and fourth and fifth sampling values of the sampling values in response to a second control signal. The first error count signal is generated by comparing the first sampling value sampled under a reference condition with the fourth sampling value sampled under a first offset condition, and the second error count signal is generated by comparing the first sampling value with the fifth sampling value sampled under a second offset condition.

Abstract: Disclosed herein are an apparatus and method for user authentication based on multiple pieces of biometric information. The apparatus may include one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program receives multiple pieces of biometric information from the client device of a user, generates the personal identifier of the user using a neural network and a Bloom filter algorithm, and checks the similarity between the personal identifier of the user and each of personal identifiers previously registered in a database, thereby authenticating the user.

Abstract: Disclosed herein are an apparatus and method for managing personal information.

Abstract: Disclosed herein are an apparatus and method for recommending privacy control. A privacy control server includes multiple common privacy control recommendation models learned based on personal information provision histories of multiple users, a user preference determination unit for generating at least one question item based on the multiple common privacy control recommendation models and determining a privacy control preference of a user based on a result of a user answer to the at least one question item, and a common privacy control recommendation model provision unit for providing a common privacy control recommendation model selected to match the privacy control preference of the user to the user.

Abstract: Disclosed are a device and method for managing credentials. In a multi-decentralized identity management service environment, a user can safely manage credentials that have been once issued, and can use the credentials in various user terminals without being redundantly issued credentials.

Abstract: Disclosed herein are an apparatus and method for issuing delegated credentials between digital wallets possessed by multiple users connected to a Decentralized Identifier (DID) registry through wired/wireless communication. The method includes receiving, by a digital wallet of a first user, a delegated credential issuance request message including a newly created DID document from a digital wallet of a second user, generating, by the digital wallet of the first user, a delegated credential using both the delegated credential issuance request message, received from the digital wallet of the second user, and an original credential, previously issued by the digital wallet of the first user, and transmitting, by the digital wallet of the first user, the generated delegated credential and the original credential, together with a delegated credential registration request message, to the digital wallet of the second user.

Abstract: A portable communication device includes a touchscreen display, a wireless charging circuit, and one or more processors operatively coupled with the wireless charging circuit and configured to detect a touch contact with respect to the touchscreen display, while wireless charging is not performed using the wireless charging circuit, allow recognition of the touch contact having a first touch characteristic and a second touch characteristic as a user input with respect to the touchscreen display, and while the wireless charging is performed using the wireless charging circuit, allow recognition of the touch contact having the first touch characteristic as the user input with respect to the touchscreen display and refrain from recognizing the touch contact having the second touch characteristic as the user input with respect to the touchscreen display.

Abstract: A signal receiving device includes a sampling device configured to sample an input signal to output a plurality of sampling values, and an output circuit configured to output data based on the sampling values. The output circuit outputs the data by performing majority voting based on first to third sampling values of the sampling values in response to a first control signal, and outputs the data and first and second error count signals based on the first sampling value and fourth and fifth sampling values of the sampling values in response to a second control signal. The first error count signal is generated by comparing the first sampling value sampled under a reference condition with the fourth sampling value sampled under a first offset condition, and the second error count signal is generated by comparing the first sampling value with the fifth sampling value sampled under a second offset condition.

Abstract: An anonymous credential authentication system receives an anonymous credential signature value indicating that setting proposition information using a credential is satisfied from a user device that has been issued the credential combined with multiple pieces of attribute information constituting personal information, generates signer authentication information that confirms a signer of the anonymous credential signature value using an opening key, and outputs the signer authentication information.

Abstract: Disclosed herein are an apparatus and method for managing personal information.

Abstract: Disclosed herein are an apparatus and method for managing a history of object owners. The method includes generating, by an object owner history management apparatus, a product registration Verifiable Credential (VC) in a form of a Merkle tree, and registering the product registration VC in a blockchain in order to manage a history of owners of an object, acquiring, by a first user terminal device, the product registration VC from the blockchain and registering a first owner VC, generated based on the product registration VC, in the blockchain to register an ownership of the object, and acquiring, by a second user terminal device, a product transfer Verifiable Presentation (VP) from the first user terminal device and registering a second owner VC, generated based on the product transfer VP, in the blockchain to receive transfer of the ownership of the object.

Abstract: A method and an apparatus for providing a service using a kiosk by a service providing server by performing the steps of: receiving a device list of at least one kiosk having an ability to provide the service among a plurality of kiosks registered in a blockchain from a kiosk server; authenticating a first kiosk through a smart contract function embedded in the blockchain when a user requests the service through the first kiosk and determining whether the first kiosk is included in the device list; and providing the service to the user when the first kiosk is authenticated by the smart contract function and is included in the device list are provided.

Abstract: A wireless power transmitter performs a method for supplying power for wireless charging from the wireless power transmitter to a plurality of wireless power receivers. The wireless charging method includes allocating priorities to one or more electronic devices that connect for wireless charging, and supplying wireless power to the one or more electronic devices based on the priorities. Other embodiments may be implemented.

Abstract: Various embodiments of the present disclosure propose an apparatus and a method for processing an image for converting a frame rate. To this end, the present invention is capable of providing an apparatus and a method for processing an image, configured to convert a frame rate on the basis of monochrome image frames acquired through a monochrome sensor, and perform an image synthesis with the frame rate converted monochrome image frame by using a downsampled color image frame acquired through a color sensor.