Lg Chem, Ltd

Electronics and Telecommunications Research Institute

Ju-Young Kim

Jung-Soo Kang

Do-Youn Kim

Chang-Gi Jung

Nam-Su Jho

Do-Yang Jung

Jee-Ho Kim

Cheol-Taek Kim

Jong-Kyung Ko

Sung-Jin Yu

Young-Kyung Lee

Yeong-Rae Chang

Chang Joon Park

Young-Jun Hong

Ju-Hyun Kang

Joon-Koo Kang

Jong-Min Park

Soon-Hwa Jung

Hyun-Sook Cho

Ji-Hun Kim

Jung-Chan Na

Ku-Young Chang

Byung-Gil Lee

Jae-Dong Park

Dong-Chun Lee

Kwan-Tae Cho

Joong-Yong Choi

Hang-Kee Kim

Dae-Hee Seo

Byung-Doo Kim

Kang-Min Sohn

Ju-Seok Lee

John E NamGoong

Tae-Joong Lee

Hyun-Jin Kim

Kyung-Ki Hong

Hey-Woong Park

Seung-Hee Oh

Eun-Sang Yoo

Sung-Su Kim

Jun-Ill Yoon

Do-Hyeung Kim

Disclosed herein is a method and apparatus for stateful order-preserving encryption for enhancing security. The method includes generating an order-preserving ciphertext by performing order-preserving encryption on a plaintext, generating a plurality of dummy ciphertexts corresponding to a preset variable for the order-preserving ciphertext, and adding the order-preserving ciphertext and the plurality of dummy ciphertexts to a ciphertext set.

Stateful order-preserving encryption method and apparatus for enhancing security

Disclosed herein is an apparatus and method for verifying data validity. The method performed by the apparatus includes generating a zero knowledge proof key pair and a certificate using a key generation algorithm of zero knowledge proof in response to a request from a first device to issue a key, generating a verification certificate by verifying validity and quality of data after receiving the data and a verification request from the first device, and performing, by the first device, zero knowledge proof for the data in response to a proof request from a second device that buys the data possessed by the first device.

Apparatus and method for validating data

Disclosed herein are a key generation apparatus and method based on machine learning. The key generation method includes generating, by first and second key generation apparatuses, first and second commit values, and uploading the first commit value and the second commit value to an external repository, training, by the first and second key generation apparatuses, a neural network so as to match weight values with each other, sharing, by the first and second key generation apparatuses, the first and second commit values with each other, comparing shared first and second commit values with uploaded commit values, and then verifying the commit values, and when verification of the commit values has succeeded, generating, by the first and second key generation apparatuses, hash values using the matched weight value, verifying whether the hash values are identical to each other, and generating a session secret key based on a result of verification.

Key generation apparatus and method based on machine learning

The present invention relates to an apparatus and method that control a vessel deviating from an anchorage using wide-range sensor-based spherical trigonometry. In the method, vessels anchored in an anchorage are monitored. The anchorage is defined as a group, and the group of the anchored vessels is managed. Leaving of a vessel, needing to deviate from the anchorage, from the group is controlled. If a vessel recognized as a vessel identical to one that left the group requests anchoring after a predetermined period of time has elapsed, the anchoring-requesting vessel is controlled.

Apparatus and method for controlling vessel deviating from anchorage

An apparatus for managing a battery pack for a vehicle includes a temperature measurement module for measuring temperature of the battery pack; a current measurement module for measuring a charge/discharge current of the battery pack when the measured temperature is not within a predetermined temperature range; a time measurement module for measuring the time while the measured charge/discharge current is over a predetermined current value; a storage module for accumulating and storing the measured time; and a control module for determining a state of the battery pack according to the accumulated and stored time and providing the state information to a user.

Method and apparatus for managing battery pack

Disclosed is a secondary battery management apparatus including a current control switch for opening and closing the flow of charge or discharge current of a secondary battery; a connector for selectively providing a power conducting state and a power cutoff state based on whether the apparatus is connected to a charge/discharge device; a communication terminal for providing a communication interface with the charge/discharge device; a power supply for receiving power from the secondary battery and supplying the received power to a component that requires electrical power; a power supply line including a power supply switch; a switch controller for detecting the reception of a communication request signal through the communication terminal during connection to the charge/discharge device through the connector and transmitting a turn-on signal to the power supply switch; and a controller connected to the power supply and initiating or terminating a management operation for the battery.

Apparatus for managing secondary battery

Disclosed is a method and system for allocating identifiers to multi-slaves in a battery pack. The method for allocating identifiers, in which a master battery management system (BMS) allocates identifiers to N (N is an integer of 2 or above) number of slave BMSs through a communication network, includes (a) by each slave BMS, generating an initial identifier by combining digital voltage measurement values of battery cells included in a battery module managed by the slave BMS and transmitting the initial identifier to a master BMS; and (b) by the master BMS, allocating identifiers again according to the initial identifier received from each slave BMS and then transmitting the identifiers to slave BMSs. Therefore, it is possible to allocate identifiers without inputting an identifier to a multi-slave BMS in advance or using a separate hardware configuration.

Method and system for allocating identifiers to multi-slave in battery pack

Disclosed herein is an apparatus for collecting game data in order to test performance of a game server. The apparatus includes a capture and filtering module, a control module, and a data management module. The capture and filtering module captures packets, transmitted and received between the game server and each of a plurality of game clients, using the plurality of game clients, and extracts a plurality of necessary data by performing filtering on the results of the capturing. The control module determines the movement route of a game character in such a way as to correspond to the plurality of necessary data, and controls the plurality of game clients based on the movement route. The data management module stores and manages the plurality of necessary data.

Apparatus and method for collecting game data

Provided is an apparatus for measuring current and voltage of a secondary battery pack in synchronization manner, comprising a voltage measurement circuit for periodically measuring and outputting the level of a charging voltage of each of a plurality of battery cells contained in a battery pack; a current measurement circuit for periodically measuring and outputting the level of current flowing into or out of the battery pack; and a control unit for synchronizing a time difference between a current measurement time point of the battery pack and a voltage measurement time point of each battery cell with a reference delay time.

Apparatus and method for measuring current and voltage of secondary battery pack in synchronization manner

To check insulation of a pouch electric cell, probes are contacted to an electrode of a pouch electric cell and an aluminum layer of a pouch of the pouch electric cell, respectively, and then an electric characteristic value between the probes is measured. The probe contacted with the aluminum layer has a contact portion made of conductive elastic material. Also, insulation of the pouch electric cell is determined by comparing the measured electric characteristic value with a reference value. Thus, physical characteristics of an outer periphery of a flexible pouch may be sufficiently exhibited in measuring or checking insulation of a pouch electric cell such as insulation resistance, thereby improving reliability of electric contact and minimizing physical damage or deformation of the pouch electric cell.

Method and apparatus for checking insulation of pouch electric cell and probe for the same

The present invention provides a coating composition and a coating film that comprises a binder containing a UV-curable functional group, a compound containing a fluorine UV-curable functional group, a photoinitiator; and nano-sized particles. The coating film according to the present invention has excellent abrasion resistance and contamination resistance such as fingerprint trace removability and scribbling resistance.

Coating composition and coating film having enhanced abrasion resistance and fingerprint traces removability

Disclosed is a relay control apparatus and method for electric drive vehicles. The apparatus controls turn-off of a relay operative to connect an electric drive unit with a battery pack for supplying electrical power to the electric drive unit, and comprises a current sensor for measuring and outputting a residual current flowing between the battery pack and the electric drive unit; and a controller for, in a situation requiring turn-off of the relay, receiving the measured residual current value, comparing the measured residual current value with a reference value for the residual current, and controlling to maintain the ON-state of the relay or to turn off the relay on the basis of the comparison results. Accordingly, it prevents a relay of electric drive vehicles from being damaged due to over-current such as a surge current, at the time of turning off the relay.

Apparatus and method for controlling a relay in electric drive vehicle

An apparatus for controlling a battery includes a capacitor for charging a voltage when the apparatus is on and discharging a voltage when the apparatus is off, a discharging circuit for discharging the voltage charged in the capacitor; a first switching unit for connecting or disconnecting the capacitor to/from a predetermined power source for the purpose of charging of the capacitor; a second switching unit for connecting or disconnecting the capacitor to/from the discharging unit; a voltage measuring unit for measuring a voltage charged in the capacitor; and a controller for calculating a power-off duration time according to the measured voltage. This apparatus may continuously calculate a power-off duration time of a battery pack.

Method and apparatus for calculating power-off duration time and state of charging of battery

Disclosed are a method and an apparatus for detecting abnormality of a current sensor operative to measure a charge or discharge current of a battery pack. The method comprises measuring current and voltage of the battery pack; and detecting abnormality of the current sensor by comparing variations in current and voltage over a predetermined time with a current reference value and a voltage reference value, respectively. According to the present invention, it is capable of improving reliability of the battery pack, and in case that the current sensor is out of order, of protecting the battery pack from dangerous accidents such as explosion.

Method and apparatus for detecting abnormality of current sensor in battery pack

Growing community of inventors

Daejeon, South Korea

Ju-Young Kim