Electronics and Telecommunications Research Institute

Korea Telecommunication Authority

Sung Won Sohn

Jong Soo Jang

Jung Chan Na

Beom Hwan Chang

Geon Lyang Kim

Jong-Hyun Park

Hyun Joo Kim

Seon Gyoung Sohn

Soo Hyung Lee

Do Hyun Kim

Jeong Dan Choi

Byung Tae Jang

Kyung Bok Sung

Jin Tae Oh

Jungsook Kim

Seong Ik Cho

Ju Wan Kim

Seung Won Shin

Kyoung Hwan An

Jin Oh Kim

Ki Young Kim

Jong Hyun Kim

Chi Yoon Jeong

Hyo Chan Bang

Jintae Oh

Byoung Koo Kim

Jong Ho Ryu

Dong Young Kim

Ki Young Moon

Jung-Chan Na

Taek Yong Nam

Kwang Ho Baik

Jae Seung Lee

Sung Eun Kim

Tae Wook Kang

Sung Weon Kang

Jun Ho Lee

Hyun Suk Kim

Jung Hwan Hwang

Sangwoo Lee

Ji Man Park

Hyun Seo Oh

Joo Young Lee

Hyun Kyun Choi

Young Soo Park

Chee Hang Park

Ju Han Kim

Won Joo Park

Byung Gil Lee

Sung Ik Jun

Hyochan Bang

Hyung Kyu Lee

Min-Ho Han

Woong Cho

Jong Wook Han

Jae Hoon Nah

Mal Hee Kim

Hyun Gon Kim

Jung Hoon Jee

Seung Hee Oh

Dongyoung Kim

Yoon Mi Doh

Seon Gyoung Shon

Kyungshik Lim

Ki Jo Kim

Jong Oh Kim

Disclosed are an apparatus and a method for transmitting human sound that cancel an interference signal generated by a non-linear property of a human body around an ear by synthesizing and transmitting a sound signal modulated by a single side band (SSB) transmission method and a carrier to one output unit and by synthesizing and transmitting the sound signal modulated by the single side band (SSB) transmission method and a carrier in which a phase of a signal is transited to the other output unit, by using two signal output units in a sound transmitting apparatus.

Apparatus and method for transmitting human sound for removing interference signal

A method for providing a safety guidance service from a local server to a nomadic device includes gathering information regarding surrounding conditions within a service area on a road, receiving device information from the nomadic device, which enters the service area, determining whether or not the nomadic device is placed in a situation based on the device information, and when it is recognized that the situation has happened, providing safety guidance message suitable to the situation to the nomadic device.

Method and system for providing safety guidance service

A vehicle controller includes a communications unit for performing data communications with local servers; a local path generation unit for generating, in response to an automatic vehicle guidance service request, a local path based on a driving control command and sensing information received from the local servers via the communications unit; a path-following control unit for generating actuator control signals for controlling actuators of a vehicle to drive the vehicle along the local path; and a vehicle driving unit for driving the actuators according to the actuator control signals. Each local server pre-processes and merges sensor data received from the infra-sensor to generate the sensing information. A global server generates the driving control command based on the sensing information and transmits the driving control command to the local servers.

Automatic vehicle guidance system

A system for remotely controlling a vehicle in a service area divided into plural service sectors includes: an infra sensor module installed in each service sector for periodically sensing obstacles and vehicles within the service sector; a vehicle controller mounted in each vehicle for requesting the driving guidance service and automatically controlling the vehicle in accordance with a vehicle control signal; and a local server installed in each service sector for communicating with the vehicle controllers through a driving guidance network based on information on the obstacles and vehicles sensed by the infra sensor module. The system further includes a global server for allocating network resources of the driving guidance network to allow the local server to communicate with the vehicle controllers using the allocated network resources.

System and method for providing driving guidance service to vehicles

A safe driving providing system for supporting a safe driving of a vehicle includes: a radar for transmitting a signal of a predetermined frequency bandwidth to a plurality of vehicles, analyzing signals provided by the vehicles, calculating location information and distance information of the vehicles, and finding inter-vehicle distance information of the vehicles based on the location information and the distance information; and a controller for receiving operation speed information from a vehicle information terminal device installed in each vehicle, determining driving safety of the plurality of vehicles based on the received operation speed information and inter-vehicle distance information provided by the radar, and transmitting a warning message for safe driving to the vehicle information terminal device.

System and method for providing driving safety

A cell-based vehicle driving control system includes a local server for obtaining road environment information on roads within a cell and target vehicle information on a target vehicle within the cell and generating local waypoints based on the road environment information and the target vehicle information; a global server for monitoring the target vehicle information, the road environment information and local server information on the local server received from the local server; and a vehicle control terminal, mounted in the target vehicle, for receiving the local waypoints from the local server and controlling the target vehicle based on the local waypoints. The road environment information is obtained by using at least one sensor installed on the roads.

Cell-based vehicle driving control method and system

Enclosed are a signature string storage memory optimizing method, a signature string pattern matching method, and a signature matching engine. Signature is tokenized in units of substrings and the tokenized substrings are stored in an internal memory block and an external memory block to optimize a memory storage pattern. Therefore, matching of introduction data to signature patterns is effectively performed.

Signature string storage memory optimizing method, signature string pattern matching method, and signature string matching engine

There are provided a system and method for tracing back an attacker by using centroid decomposition technique, the system including: a log data input module collecting log data of an intrusion alarm from an intrusion detection system; a centroid node detection module generating a shortest path tree by applying a shortest path algorithm to network router connection information collected by a network administration server, detecting a centroid node by applying centroid decomposition technique removing a leaf-node to the shortest path tree, and generating a centroid tree whose node of each level is the detected centroid node; and a traceback processing module requesting log data of a router matched with the node of each level of the centroid tree, and tracing back a router identical to the log data of the collected intrusion alarm as a router connected to a source of an attacker by comparing the log data of the router with the log data of the collected intrusion alarm. According to the system and method, an attacker causing a security intrusion event may be quickly detected, a load on the system is reduced, and a passage host exposed to a danger or having weaknesses may be easily recognized, thereby easily coping with an attack.

Log-based traceback system and method using centroid decomposition technique

There are provided an apparatus and method for sampling a security event based on contents of the security event, the apparatus including: a security event accumulation module collecting security events occurring in a network system and storing the security events for each type according to contents of the security event; a security event analysis module calculating distribution of the security events for each type by analyzing the stored security events; and a security event extraction module sampling the stored security events according to the calculated distribution of the security events for each type. The apparatus and method may improve speed of visualization of a security event and a security event analysis apparatus and may increase accuracy thereof.

Apparatus and method for sampling security events based on contents of the security events

A message security processing system and method for Web services are provided. In the message security processing system in which messages are exchanged between a client and a server with a SOAP-RPC format, each of the client and the server includes: a security interface allowing information related to digital signature, encryption, and timestamp insertion to be set in a security context object for an application program to meet security requirements of the client or the server; a security handler receiving the security context object from the security interface, and performing security processing of a request message by calling security objects stored in a request queue of the security context object one by one in order or performing security processing of a response message by calling security objects stored in a response queue of the security context object one by one in order; and an XML security unit supporting an XML security functions by called by the security handler.

Message security processing system and method for web services

There are provided a network security state visualization device and method, the device including: a security event collector collecting original security event information from network security apparatuses; a security event analyzer analyzing the original security event information collected by the security event collector and extracting characteristic data corresponding to a security event; and a three-dimensional visualization display unit visualizing a correlation between the characteristic data extracted by the security event analyzer as a three-dimensional screen to be displayed.

Method and apparatus for visualizing network security state

A double-integration signal processing apparatus for pulse width amplification and A/D conversion is provided. The current mode double-integration conversion apparatus includes: a current mode double-integration unit which integrates an input current in a predetermined time interval and outputs an integration voltage; a comparison unit which compares the integration voltage output from the current mode double-integration unit with a predetermined comparison voltage V k and outputs an comparison pulse signal; and a gate logic unit which performs a logic operation by using the comparison pulse signal of the comparison unit and an internal signal and outputs an logic operation pulse signal. Accordingly, the current mode double-integration conversion apparatus can be applied to various sensors.

Current mode double-integration conversion apparatus

A network status display device using a traffic pattern map is provided. The device includes: a traffic feature extractor extracting a port number of a port having the maximum occupancy of micro-flows and macro-flows for each network address section and host address section with reference to traffic information collected by an external traffic information collector, calculating and storing an occupancy rate of the port; a traffic status display unit making a network traffic pattern map expressed by destination-source network addresses and a host traffic pattern map expressed by destination-source host addresses and displaying the port information stored in the traffic feature extractor on the network traffic pattern map and the host traffic pattern map; and a traffic anomaly determination unit determining whether a network status is abnormal with reference to the network traffic pattern map and the host traffic pattern map and detecting and reporting a harmful or abnormal traffic which causes the abnormal network status. The device can determine whether the anomaly deteriorating the network performance exists and can easily and quickly detect the harmful or abnormal traffic which causes the anomaly by the use of the port information of the port having the maximum occupancy of the micro-flows and the macro-flows for each network address section and each host address section.

Network status display device and method using traffic pattern map

A network status display device using a traffic flow-radar is provided. The network status display device includes: a traffic feature extractor calculating flow occupancy rates for total flows, micro-flows and macro-flows with respect to each of a plurality of traffic features with reference to traffic information for each traffic feature such as a network address, a port, a transmitting/receiving host address or a protocol collected by an external traffic information collector, and storing the calculation result; a traffic status display unit displaying the flow occupancy rates for each traffic feature calculated and stored in the traffic feature extractor on a radar with dots for each traffic feature; and a traffic anomaly determination unit determining whether a network status is abnormal with reference to the radar for each traffic feature, detecting and reporting the type of the abnormal network status and harmful or abnormal traffic that generates the abnormal network status, when the abnormal status occurs.

Network status display device and method using traffic flow-radar

Provided are an active node, and a system and method of transmitting contents using the active node. When contents to be transmitted from a contents server to a terminal are received, resource information of the terminal is identified, the contents transmitted from the contents server are transformed into a pertinent format to the terminal based on the resource information, information included in a header of the contents is transformed into information about the transformed contents and is transmitted to the terminal, thereby reducing load according to contents transformation of a contents server.

Active node, and contents transfer system and method using the active node

Growing community of inventors

Daejeon, South Korea

Sung Won Sohn