Patent application number | Description | Published |
20110077886 | SYSTEM AND METHOD OF SELECTING WHITE GAUSSIAN NOISE SUB-BAND USING SINGULAR VALUE DECOMPOSITION - Provided is a method of selecting a white Gaussian noise sub-band using singular value decomposition (SVD). The method includes selecting a first frequency band, verifying whether a signal is included in the selected first frequency band, determining the first frequency band as a target measurement frequency when the signal is not included in the selected first frequency band, and measuring a background radio noise in the determined target measurement frequency. | 03-31-2011 |
20110103452 | DIGITAL CUMULATIVE SPECTRUM ANALYSIS APPARATUS AND METHOD FOR DIRECTION FINDING AND LOCATION - A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus for single-channel direction finding includes: a digital processing unit configured to receive a signal, convert the received signal into a digital signal, reduce a sampling rate of the digital signal by using a digital down converter (DDC), and convert the digital signal into a baseband complex signal; a spectrum processing unit configured to map a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to the power levels depending on the accumulation ratio of the power levels; and a display unit configured to display the power levels with colors in order to estimate the bearing of the signal. | 05-05-2011 |
20110148729 | LOG PERIODIC ANTENNA - A log periodic antenna includes first and second transmission lines parallel with each other; and a plurality of broadband radiation elements having first sides electrically connected to the first and second transmission lines, a predetermined angle being defined between the first sides of the broadband radiation elements and the first and second transmission lines, and second sides not electrically connected with the first and second transmission lines, the second sides having radiation surfaces larger than radiation surfaces of the first sides. A plurality of broadband radiation elements electrically connected with the first transmission line and a plurality of broadband radiation elements electrically connected with the second transmission line are positioned to face each other with reference to the first and second transmission lines. | 06-23-2011 |
20120162004 | APPARATUS AND METHOD FOR ESTIMATING DIRECTION OF ARRIVAL OF SIGNAL IN COMMUNICATION SYSTEM - Disclosed is an apparatus and method for estimating a direction of arrival (DOA) of a signal, which improves DOA estimation performance of a reception signal having a low signal to interference and noise ratio (SINR) in a communication system. In the method, a received signal is converted into a signal of a frequency region. A noise signal is separated from the signal converted into the signal of the frequency region. A noise region is filtered by setting an occupied bandwidth from the signal having the noise signal separated therefrom. A DOA of the signal obtained through the filtering of the noise region is estimated. | 06-28-2012 |
20130082972 | METHOD AND DEVICE FOR CONTROLLING CONTENTS USING TOUCH, RECORDING MEDIUM THEREFOR, AND USER TERMINAL HAVING SAME - The present invention provides a method and a device for controlling contents of a user terminal having a touch screen, a recording medium therefor, and a user terminal having the same. The present invention relates to a method for controlling the contents of a user terminal having a touch screen, wherein, when a touch is detected on the touch screen while executing contents conversion, a part of the contents gets fixed on the basis of the detected location of the touch. Therefore, two or more contents can be easily compared using the fixed contents region as reference contents. | 04-04-2013 |
20130159915 | METHOD AND APPARATUS FOR CONTROLLING CONTENTS ON ELECTRONIC BOOK USING BEZEL - An input area that is used for controlling contents is formed on the periphery of an electronic book by performing touch-dragging a bezel area by utilizing the bezel area that is arranged in a peripheral portion of a touch screen of the electronic book. Therefore, according to the present disclosure, even under an environment of a small screen, utilization of a space for operating contents can be effectively performed. | 06-20-2013 |
20140044266 | REAL-TIME NOISE REDUCTION APPARATUS FOR RADIO MONITORING SYSTEM - The present invention provides a real-time noise reduction apparatus for a radio monitoring system, including a dual channel digitizing unit configured to convert signals, subject to frequency down-conversion and inputted to two channels, into digital signals and a Digital Signal Processor (DSP) configured to reduce noise from time sample regions of the signals, received from the dual channel digitizing unit, in a time domain using a correlation method between samples through the delayed feedback means. | 02-13-2014 |
20140064349 | DIGITAL CUMULATIVE SPECTRUM ANALYSIS APPARATUS AND METHOD FOR DIRECTION FINDING AND LOCATION - A digital spectrum analysis apparatus and method for direction finding (DF) and location is provided. The digital spectrum analysis apparatus includes: a multi-channel unit configured to convert signals inputted from antennas into digital signals, reduce a sampling rate of the digital signals by using a digital down converter (DDC), and convert the digital signals into baseband complex signals, and having a plurality of channels; a DF estimator configured to estimate the direction of the signal; a spectrum processing unit configured to map any one of a bearing and a power level of the baseband complex signal into coordinate system, and allocate different colors to one of the bearings and the power levels depending on the accumulation ratio of one of the bearing and the power level; and a display unit configured to display the power level and the bearing with colors. | 03-06-2014 |
20150071310 | RADIO MEASUREMENT METHOD AND RADIO MEASUREMENT APPARATUS USING MULTI-ANTENNA CHANNEL MULTIPLEX - A radio measurement apparatus comprising: an array antennal selection unit selecting array antennas corresponding to received signals; a reference path selection unit selecting a reference array antenna; a signal processing unit selecting a reference antenna channel through analysis of signal characteristics measured through two reception channels; a sequential channel multiplex unit determining sequentially inputting received signals of remaining array antennas to output the sequentially input signals to a receiver; and a correction signal input unit compensating amplitude and phase characteristics of the respective reception channels. | 03-12-2015 |