摘要:
An apparatus for controlling a global positioning system (GPS) reference signal to be provided to a base station modem is disclosed to expand a coverage area of a base station, which comprises a GPS clock reception block for generating a system clock and a pp2s signal based on a reference time from the GPS; a system clock distribution block for distributing the system clock received from the clock reception block; a clock generation block for receiving the pp2s signal and generating a clock signal as base station synchronous signals for the expansion of the coverage area; a base station modem block with a multiplicity of base station modems, for performing data modulation/demodulation in synchronism with a corresponding clock signal; a CPU for generating a control signal; and a controller for allowing the data to be transmitted to a selected one among the base station modems, in response to the control signal.
摘要:
An apparatus and method for effectively tracking a network path by using packet information generated when visiting a Web page are provided.According to embodiments of the invention, referrer information, seed information, and arrival information are extracted by using HTTP packet information generated while a particular Web page is being executed, whereby an infection path of malicious codes generated in several Web pages can be checked, thus preventing infection of a malicious code generated in Web pages.
摘要:
There is provided a channel card for extending the coverage area of a base station, which controls GPS reference signals provided to base station modems to extend the coverage area by up to four times a general base station coverage area. The channel card includes: a controller for generating control signals for extending the coverage area of the base station; a system clock distributor for dividing a GPS reference signal applied from a GPS clock receiver to generate a plurality of system clocks; a coverage area extending clock generator for converting the GPS reference signal supplied from the GPS clock receiver into a plurality of signals under the control of the controller, to generate clocks for extending the coverage area; a coverage area extending clock controller for selectively providing the plurality of coverage area extending clocks generated by the coverage area extending clock generator to first to fourth base station modems under the control of the controller; and the first to fourth base station modems which operate according to the coverage area controlling clocks provided by the extension clock controller and the system clocks generated by the system clock distributor, to handle calls established in a first area having the minimum coverage area to a fourth area having the maximum coverage area.
摘要:
A detection system of a suspicious malicious website using the analysis of a JavaScript obfuscation strength, which includes: an entropy measuring processor of measuring an entropy of an obfuscated JavaScript present in the website, a special character entropy, and a variable/function name entropy; a frequency measuring processor of measuring a specific function frequency, an encoding mark frequency and a % symbol frequency of the JavaScript; a density measuring processor of measuring the maximum length of a single character string of the JavaScript; and a malicious website confirming processor of determining whether the relevant website is malicious by comparing an obfuscation strength value, measured by the entropy measuring processor, the frequency measuring processor and the density measuring processor, with a threshold value.
摘要:
Disclosed herein is a PDF document type malicious code detection system for efficiently detecting a malicious code embedded in a document type and a method thereof. The present invention may perform a dynamic and static analysis on JavaScript within a PDF document, and execute the PDF document to perform a PDF dynamic analysis, thereby achieving an effect of efficiently extracting a malicious code embedded in the PDF document.
摘要:
Provided is seed information collecting device for detecting malicious code landing/hopping/distribution sites. The device comprises: a seed information collecting module collecting social issue keywords from a seed information collecting channel and collecting address information of potential malicious code landing/hopping/distribution sites using the collected social issue keywords; a web source code collecting module collecting web source code of the potential malicious code landing/hopping/distribution sites using the address information of the potential malicious code landing/hopping/distribution sites collected by the seed information collecting module; and a policy management module managing collection policies of the seed information collecting module and the web source code collecting module.
摘要:
The present invention provides a malicious code detection and classification system using a string comparison technique, including a string extracting unit configured to extract all expressed strings existing in a binary file from the malicious code binary file; a string refining unit configured to refine elements obstructing malicious code detection and classification in the strings extracted from the string extracting unit; and a string comparison unit configured to determine how similar one binary is to another binary by comparing strings refined from the string refining unit.
摘要:
The present invention provides a detection system of a suspicious malicious website using the analysis of a JavaScript obfuscation strength, which includes: an entropy measuring block of measuring an entropy of an obfuscated JavaScript present in the website, a special character entropy, and a variable/function name entropy; a frequency measuring block of measuring a specific function frequency, an encoding mark frequency and a % symbol frequency of the JavaScript; a density measuring block of measuring the maximum length of a single character string of the JavaScript; and a malicious website confirming block of determining whether the relevant website is malicious by comparing an obfuscation strength value, measured by the entropy measuring block, the frequency measuring block and the density measuring block, with a threshold value.
摘要:
In the multi-sector base station apparatus of a mobile communication system, capable of realizing a six-sector base station apparatus by using a three-sector base station MODEM, a peripheral equipment controlling unit transfers a sector conversion control signal outputted from a CPU for controlling a sector switching of the base station, to a sector conversion controlling unit, and the sector conversion controlling unit generates a plural number of control signals for a sector conversion according to the inputted control signal and sector conversion data, and by this control signal, a sector converting unit performs a switching between sectors of a transmission signal from a base station MODEM and a reception signal transmitted from a mobile station, whereby the six-sector base station is realized through a use of the three-sector base station base station MODEM.
摘要:
The present invention discloses a parity detection device and method in a CDMA mobile communications system, which detects parity error in data output from a cell site modem (Q51601-2S1), and controls the data output when the parity error occurs, to improve the reliability in data communication. The invention converts serial data to be transmitted through a CSM into parallel data, checks if there is a parity error in the parallel data, and generates an interrupt when a parity error is detected. When the interrupt is generated, an output controller restrains the transmission of the serial data to be transmitted, which is outputted from the CSM, thereby preventing data having error from being transmitted.