Abstract:
본 발명은 광대역 주파수 신호를 실시간으로 검출하고 분석하여 인가되지 않은 위협신호로 판단되면, 재밍 명령 및 재밍 신호 규격 정보를 재밍 단말에 전송하는 신호 탐지 단말; 및 상기 재밍 명령 및 재밍 신호 규격 정보를 수신하여, 상기 재밍 명령 및 재밍 신호 규격 정보를 기반으로 재밍 신호를 생성 및 방사하는 것을 제어하는 재밍 단말을 포함하며, 상기 신호 탐지 단말과 상기 재밍 단말은 물리적으로 분리되어 구성되며,네트워크 상에서 제어되는 것을 특징으로 하는 광대역 지능형 재밍 제어 장치 및 방법에 관한 것으로서, 비인가 위협신호를 효율적으로 제어하는 장치 및 방법을 제공하는 것을 목적으로 한다.
Abstract:
A device and a method, for detecting signals, which effectively analyze and trace abnormal signals which are unintended or different from normal signals are provided. The provided device for detecting signals includes: a signal reception unit to receive signals from the outside; an analog/digital signal processing unit to determine whether a signal is an abnormal signal or not for the signals received in the signal reception unit based on a plurality of signal profiles which have different signal characteristics and obtaining the abnormal signals when the received signals are abnormal; and a user interface unit for displaying the abnormal signals through the analog/digital signal processing unit. The method of the present invention is more accurate than matching through an existing simple frequency/bandwidth search by detecting abnormal signals based on profiles which are designated by a user and is capable of distinguishing a type of transmitter. [Reference numerals] (10) Antenna unit; (30) Signal conversion unit; (40) Profile matching unit; (50) Signal acquisition unit; (60) User interface unit
Abstract:
PURPOSE: A signature generation terminal, a signature verification terminal and a hybrid type bilateral signature tag verification method using the same are provided to allow a selection degree of freedom of a signature system in both transmission terminal and reception terminal. CONSTITUTION: A transmission terminal(100) generates a signature value with a tag related to a message using a bilateral state having a random initial condition. A reception terminal(200) verifies the signature value transmitted from the transmission terminal. The transmission terminal includes a random number generation unit(110) and a signature generation unit(120). The random number generation unit generates a common random number using a first secret key sharing with the reception terminal having the same size of the first secret key. The signature generation unit generates a tag value using a message requiring a signature and a second secrete key for generating a signature value and generates a signature value by encoding a tag value with a common random number. [Reference numerals] (110,210) Random number generation unit; (120) Signature generation unit; (130,230) Communication unit; (220) Verification unit
Abstract:
An apparatus and a method for detecting a laser beam by light-heat energy conversion are provided to determine wiretapping through analysis of heat distribution obtained by converting light energy of the laser beam transmitted to a window into heat energy. An apparatus for detecting a laser beam by light-heat energy conversion includes a light-heat energy converting unit(101), a plurality of heat sensing units(102), and a wiretapping determining unit(103). The light-heat energy converting unit converts light energy into heat energy. The heat sensing units sense heat. The wiretapping determining unit analyzes heat distribution. The wiretapping determining unit has a signal processing unit, a threshold determining unit, and an alarming unit. The signal processing unit processes signals transmitted from the heat detecting units by positions. The threshold determining unit determines whether a temperature difference is out of a predetermined range. The alarming unit alarms when the temperature difference is out of the predetermined range.
Abstract:
본 발명은 다중 프레임 동기이탈 검출 장치 및 방법에 관한 것으로, 제 1 입력단자를 통해 입력된 클럭을 각각의 프레임 구조에 적합하게 분주하는 다중 프레임 클럭 생성부와, 데이터 열 조정부로부터 입력된 데이터 열에서 다중 프레임 클럭 생성부로부터 입력된 분주된 클럭에 동기된 프레임 동기 정보를 검출하는 다중 FAS 검출부와, 프레임 동기 정보를 미리 정의된 FAS 패턴과 비교하여 일치 여부를 판단하는 동기 이탈 판단부와, 동기 이탈 판단부로부터 불일치 신호를 입력받으면 데이터 열의 순서 제어 카운터를 증가시키고, 일치 신호를 입력받으면 카운터를 고정하는 데이터 열 순서 제어부와, 데이터 열 순서 제어부로부터 제어신호를 입력받아 제 2 입력단자를 통해 입력된 데이터 열을 조정하는 데이터 열 조정부 및 동기 이탈 판단부로부터 입� ��된 불일치 신호의 횟수가 기준값을 초과하면 동기 이탈로 판정하는 동기 이탈 검출부를 포함한다. 따라서, 전송 속도가 적용 범위에 따라 다를 수 있는 링크형 장비의 전송 구간에서 동기 이탈을 검출해야만 하는 통신 시스템에서 모든 전송속도에 대해 동기 이탈을 검출할 수 있는 효과가 있다.
Abstract:
PURPOSE: A low-delay formant FEC(Forward Error Correction) method is provided to use formant components of a future frame as surplus information used for restoring voice packet loss, thereby reducing delay and improving sound quality. CONSTITUTION: An input voice frame is compressed after a frame delay and a look-ahead delay, and a voice packet is generated after a compressive processing delay(310). A formant preparing for loss of the input voice frame is extracted(312). Packets are transmitted after the compressive delay(314). When the packets are transmitted from a transmission terminal, the packets arrive at a receiving terminal after a transmission delay(316). A certain packet is lost among the receiving packets inputted to a CODEC of the receiving terminal(318). When the packet is lost, the lost packet is restored by using surplus information(320).
Abstract:
PURPOSE: An apparatus and a method for detecting a synchronization failure of a data stream are provided to decide the synchronization failure by changing channels of the data stream and comparing the frame synchronization information with an FAS pattern. CONSTITUTION: An apparatus for detecting a synchronization failure of a data stream includes a frame clock generation unit(306), a synchronization information extractor(302), an FAS detector(308), an up-down counter(310), a channel change unit(312), a frame clock control unit(304), and a synchronization failure decision unit(314). The frame clock generation unit(306) generates a frame clock by using an input clock. The synchronization information extractor(302) a received data stream with a frame clock and extracts the frame synchronization information from the data stream. The FAS detector(308) is used for deciding a corresponding state between the frame synchronization information and a FAS pattern. The up-down counter(310) outputs a channel change signal for deciding a change of a channel by increasing or reducing a counter value according to an output signal of the FAS detector. The channel change unit(312) outputs the channel change signal of the up-down counter to the frame clock control unit or outputs a synchronization failure decision signal to the synchronization failure decision unit according to the changing number of channels. The frame clock control unit(304) controls a position of the frame clock of the frame clock generation unit according to a control signal of the channel change unit. The synchronization failure decision unit(314) decides the synchronization failure according to input signals of the up-down counter and the channel change unit.