Samsung Sds Co., Ltd.

Icu Research Industrial Cooperation Group

Samsung Electronics Co., Ltd.

Udp Technology Ltd.

Kyu Sang Lee

Ki Woon Sung

Jun Tae Kim

Chang Suk Yoon

Sang Won Lee

SAng Hyeon Kang

Jung Eun Lee

Young Yoo Heo

Sang Ji Bae

Kwang Cheol Lee

Kyung Jin Kim

June Koo Rhee

Han Saem Seo

Chan T D Thai

Ji Won Kim

Young Woon Kwon

Seung Woo Nam

Hwa Yong Oh

Hyung Joo Mo

Jae Seok Lee

Eil Woo Baik

Hwa Yong Yoon

A blockchain based data management method performed by a computing device according to an embodiment of the present disclosure includes recording a deletion event for off-chain data and time information of the deletion event in a blockchain network, and selectively deleting the off-chain data based on a validity verification result calculated for the time information, wherein the validity verification result is calculated using a time-consensus algorithm of the blockchain network.

Method and apparatus for managing data based on blockchain

A blockchain-based data distribution management method according to an embodiment is performed by a computing device. The method includes generating a plurality of shards by fragmenting a first information, requesting a first block event for distributed storage of the plurality of shards in a plurality of off-chain storages to a blockchain network, and transmitting the plurality of shards to the plurality of off-chain storages, wherein a second information indicating a history of the plurality of shards distributed and stored in the plurality of off-chain storages is recorded in the blockchain network through the first block event, wherein when a predetermined number or more of shards among the plurality of shards are collected, the first information is restored from the collected predetermined number or more of shards.

Distributed data management method based on a blockchain network and apparatus therefor

A method for batch processing for a plurality of individual transactions includes generating a batch transaction by aggregating at least some of the plurality of individual transactions according to a setting value of a batch size, and processing the batch transaction via a blockchain network. The generation of the batch transaction includes adjusting the setting value of the batch size based on a monitoring result for a transaction processing status, and generating the batch transaction according to the adjusted setting value.

Apparatus and method for batch processing for blockchain transactions

A blockchain data recording method includes determining a recording type as one of an on-chain type and an off-chain type according to a target data to be recorded in a blockchain, transmitting a first transaction proposal for recording the target data in a blockchain node configured to store an on-chain data on a blockchain to the blockchain node when the recording type is an on-chain type, and recording the target data in a storage node provided to store an off-chain data, and transmitting a second transaction proposal for storing recording information of the target data in the blockchain to the blockchain node when the recording type is an off-chain type.

Blockchain data recording method and apparatus thereof

A method for managing transaction is performed in a blockchain-based computing system and includes receiving a request for processing a first individual transaction from a client terminal, generating a batch transaction by aggregating a plurality of individual transactions including the first individual transaction, processing the generated batch transaction via a blockchain network, such that a status record associated with the batch transaction is recorded in the blockchain, and providing the client terminal with an identifier of the batch transaction and index information on the first individual transaction, wherein the status record associated with the batch transaction includes a first status record associated with the first individual transaction, and wherein the index information on the first individual transaction is determined based on a location of the first status record in the status record.

Blockchain-based computing system and method for managing transaction thereof

An accelerated transaction processing apparatus includes a memory for storing one or more instructions, a communication interface for communicating with a blockchain network, and a processor. The processor is configured to determine whether the blockchain network is in a congested state based on monitoring information about the blockchain network, adjust a batch size based on a result of the determination, and perform batch processing for one or more individual transactions using the adjusted batch size.

Accelerated processing apparatus for transaction and method thereof

A data management system according to an embodiment of this invention includes a blockchain node configured to store on-chain data on blockchain and a service server, upon receiving a service request associated with the original data from a client, i) accessing off-chain data stored in a storage node or recording off-chain data in the storage node according to the service request, and ii) sending a transaction proposal to the blockchain node for a record associated with the service request to be stored in the blockchain.

Blockchain based data management system and method thereof

A file transmission method includes storing each chunk of a target file by public cloud, receiving, by the first node, a file transmission request including an encrypted chunk order sheet of the target file, information on the target file and recipient information, wherein the chunk order sheet includes connection order information of each chunk necessary for restoring the target file, and the encrypted chunk order sheet is encrypted with a public key of a recipient, storing a first transaction including information included in the file transmission request and chunk storage location information in a ledger stored in the first node, storing, by the second node, the first transaction in a ledger of the second node according to synchronization of the ledger, storing a chunk in the internal storage using the chunk storage location information when the recipient information included in the first transaction includes a user belonging to the intranet.

Blockchain based file management system and method thereof

Provided is a video analysis (VA) method comprises calculating, by a VA apparatus, a size of each of a plurality of frames by summing sizes of a plurality of packets constituting each of the plurality of frames, analyzing, by the VA apparatus, the size of each of the plurality of frames constituting a video to determine a pattern of the sizes of the plurality of frames and determining, by the VA apparatus, whether there is a motion in the video based on the size pattern.

Video analysis method and apparatus and computer program

The present invention relates to a motion detecting apparatus and method which is capable of correctly detecting a moving object by determining a motion variation on a pixel basis through comparison between frames. The motion detecting apparatus can correctly detect a region of a moving object by determining whether pixels of the input image correspond to an object, garbage or background on a pixel-basis and can prevent a detected object from missing from an overlapping region occurring in object detection through the existing frame-based comparison, which can result in high accuracy of detection of the moving object.

Apparatus and method for detecting motion

Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus. The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.

Forward discrete/inverse-discrete Fourier transform device and method for optical OFDM communication and transmitting and receiving apparatus comprising the device

A method of recording a broadcasted programs based on ratings is disclosed. The method includes setting a watching restriction rating of the broadcasted program according to user commands, detecting rating restriction information in a broadcasted signal, associated with the broadcasted program, received when the broadcasted program is recorded, and comparing the detected rating restriction information with the set watching restriction rating, and automatically setting a password to be associated with the recording of the broadcasted program when the detected rate restriction information is higher than the set watching restriction rating.

Growing community of inventors

Seoul, South Korea

Kyu Sang Lee