Abstract:
PURPOSE: A device and method for selecting a preferred monitored object and an object monitoring device are provided to deliver the collision possibility between ships to a controller by automatically predicting a credible accident scenario. CONSTITUTION: A route estimation unit(310) estimates a traveling route of a designated first vehicle. A scenario prediction unit predicts a credible accident scenario on the traveling route of the first vehicle based on the traveling route of a second vehicle. A risk calculation unit calculates a first risk related to the accident possibility of each vehicle. A preferred monitored object selection unit(360) selects a preferred monitored object among the whole vehicles In which the first risk is calculated. [Reference numerals] (310) Route estimation unit; (311) Radar; (312) AIS; (320) Present condition estimation unit; (330) History information analyzing unit; (340) Risk analyses and collision risk comprehensive estimation unit; (350) Effect/damage estimation unit for each area and each object; (351) Ship DB; (360) Preferred monitored object selection unit; (370) Dynamic risk calculation unit; (380) Decision-making support data generator
Abstract:
PURPOSE: A system for detecting a global harmful video and a method thereof are provided to globally determine whether a moving picture is harmful based on a global harmfulness determination policy and appearance information of an input harmful segment. CONSTITUTION: A global video determination policy generating block(510) analyzes appearance information of a learning harmful segment. The global video determination policy generating block generates a global harmfulness determination policy. A global video determination policy execution block(520) analyzes appearance information of an input harmful segment. The global video determination policy execution block determines whether a global video is harmful based on the appearance information and the global harmfulness determination policy of the input harmful segment.
Abstract:
본 발명은 유한 확장체에서 제곱근 계산 장치 및 방법에 관한 것이다. 유한 확장체 (여기서 p는 소수, k는 홀수)에서 임의의 소수 p에 대해 제곱근을 효율적으로 계산하기 위하여 지수승 계산을 위한 표현법을 새로 정의함으로써, 지수 연산에 필요한 연산량을 줄일 수 있어 향상된 알고리즘의 효율성을 가질 수 있다. 유한 확장체, 제곱근, 지수승, 임의의 소수, Tonelli-Shanks
Abstract:
비밀키 생성 장치는 모바일 RFID 단말의 정보를 이용하여 비밀키를 생성하고, 이를 물품에 장착된 RFID 태그로 전송하며, RFID 태그로부터 비밀키를 이용하여 암호화된 상기 물품의 유일 식별자를 수신한 후에 생성한 비밀키를 이용하여 암호화된 물품의 유일 식별자를 복원한다. 이렇게 하면, 사용자의 개입을 최소화한 상태에서 모바일 RFID 단말의 사용자의 개인 프라이버시를 보호해 줄 수 있다. 모바일 RFID, 비밀키, RFID 태그, RFID 리더
Abstract:
PURPOSE: A network-based remote forensic system is provided to easily use evidence data with the accumulation of collected evidence data. CONSTITUTION: One or more remote terminals(240) interlink an evidence device(110) in a remote place. The remote terminal performs forensic for the evidence device with a virtual forensic tool. An investigation center system(200) is connected through a wide area network to the remote terminal. The investigation center system offers the virtual forensic tool. The investigation center system processes the requirement of the remote terminal.
Abstract:
PURPOSE: A video watermark insertion device, system and method for evaluating a watermarking algorithm using the same are provided to quantitively measure toughness performance of an watermark algorithm. CONSTITUTION: A watermark inserting unit(110) inserts a watermark including user information into a video content. According to deformation kind and intensity of video, a video transforming unit(120) performs video deformation about the content. A watermark detecting unit(130) detects watermark from a watermarked content. The water mark detecting unit outputs roughness information of a watermarking algorithm.
Abstract:
PURPOSE: A random number based block shuffling device for encoding a video is provided to prevent an illegal video data user from acquiring useful information. CONSTITUTION: A random number and key management unit(110) stores a shared key between a video encoding unit and a decoding unit. The random number and the key manager create the random number through the key. A block replacement processing unit(120) creates the classification information as a replacement group. The replacement rule is created using the generated random number. The block replacement processing unit changes the location of the constitution element by the generated replacement rule.
Abstract:
PURPOSE: A method for detecting a service denial attack by low traffic and apparatus thereof are provided to accurately determine a service denial attack by using incomplete GET method request packet. CONSTITUTION: If one GET require-message is longer than an MSS(Maximum Segment Size) value in a TCP(Transmission Control Protocol), a client partitions one GET require-message according to MSS. The client counts the number of packets that are transmitted to a server(S522). The client calculates the maximum number of the GET request packets that are transmitted to the server. The client determines service denial attack of the GET require-message.