Abstract:
PURPOSE: A device for detecting a synchronous signal is provided to reduce a synchronous detecting error by considering a specialized bit field, which is restricted by a characteristic of the DAB(Digital Audio Broadcasting) audio, as well as a synchronous-word of a header on a DAB audio frame. CONSTITUTION: A shift register(610) shifts/stores the bit-word received from a viterbi decoder(550). A counter(620) generates a cyclic signal of a bit or a word cycle by accumulating the bit-word inputted from the shift register. A synchronous detector(630) detects the sync-word by examining a plurality of bit fields inputted from the shift register depending on the cyclic signal inputted from the counter.
Abstract:
PURPOSE: An apparatus for canceling the detection delay of an end point of a double-talk interval and a method therefor are provided to efficiently cancel an echo although an impulse response of an echo path is changed in a point in which a double-talk is ended by detecting the double-talk interval, periodically estimating a power of a signal, and reducing the detection delay of the end point of the double-talk interval. CONSTITUTION: An echo signal estimating unit(21) estimates an echo signal from a reference input signal and a previous residual error signal through an adaptive filtering. A residual error signal generating unit(22) subtracts the estimated echo signal from an expected signal and generates a residual error signal. A power and correlation degree estimation calculating unit(23) estimates and calculates a power of the expected signal, a power of the residual error signal, and a correlation degree between the expected signal and the residual error signal using a forgetting index from the residual error signal and the expected signal generated in the residual error signal generating unit(22). A cross correlation coefficient calculating unit(24) calculates a cross correlation coefficient between the expected signal and the residual error signal using the power of the expected signal, the power of the residual error signal, and the correlation degree calculated in the power and correlation degree estimation calculating unit(23). A cross correlation coefficient comparing unit(25) compares the cross correlation coefficient calculated in the cross correlation coefficient calculating unit(24) with a predetermined threshold value and outputs confirmation information about a double talk interval. An adaptive filter coefficient updating unit(26) updates a coefficient by the adaptive filtering on the basis of confirmation information of a single-talk interval output from the cross correlation coefficient comparing unit(25). A power estimating unit(27) estimates a power on the basis of the double-talk interval output from the cross correlation coefficient comparing unit(25).
Abstract:
본발명의일 실시예에따른에이전트기반시뮬레이션장치는에이전트기반시뮬레이션장치에있어서, 이벤트발생에대한다차원전이확률표와에이전트데이터를저장하는저장부, 및기 설정된시뮬레이션실행규칙에따라상기에이전트데이터및 다차원전이확률표를이용하여시뮬레이션을실행하는실행부를포함할수 있다. 따라서, 본발명의일 실시예에따른에이전트기반시뮬레이션방법그 장치는다차원전이확률표를이용하여이벤트발생을결정함으로써정보손실을줄이고단순행렬이나함수로표현하기어려운경우에도이벤트발생을재현할수 있다.
Abstract:
보행자 길 안내 서비스 장치는 보행자로부터 목적지를 입력 받으면, 보행자의 초기 위치에서 목적지까지의 경로를 탐색하고, 탐색된 경로, 보행자의 현재 위치와 탐색된 경로 상에 존재하는 경유지 정보를 표시하며, 탐색된 경로와 경유지 정보를 토대로 길 안내 서비스를 제공한다.
Abstract:
An audio decoding device using communications between processes and a method thereof are provided to reduce power consumption and operation frequency of audio decode by transmitting data by using individual control protocol between each function block of a decoder. An audio decoding device(10) uses the communications between processes. A parsing unit(12) parses an audio bit stream and outputs a necessary data bit to produce sub band sample data according to the request of a PCM data generating unit. A sub band sample data generating unit(13) generates sub band sample data by using data bit outputted from the parsing unit. A PCM data forming unit(15) requests the parsing unit and stores necessary sub band sample data in the production of next PCM data.
Abstract:
본 발명은 디지털 멀티미디어 방송(DMB) 수신기에 있어서, 비디오와 오디오의 동기화를 각각 독립적으로 수행하면서, 비디오 디스플레이 포맷 변환 등으로 발생하는 비디오 지터를 오디오 동기화에 적용시켜, 프레임 단위 이내의 정밀한 동기화를 가능하게 하는 오디오 및 비디오 동기화 방법 및 장치에 관한 것이다. 본 발명에 따른 오디오 및 비디오 동기화 방법은, 오디오가 재생되어야 하는 시간을 나타내는 오디오 재생시간 스탬프(PTS A )값과 상기 오디오가 복호화된 실제 시간을 나타내는 오디오 시스템 타임클록(STC A )값의 제1 차이값(TD A )을 계산하는 단계와, 상기 제1 차이값(TD A )이 기설정된 오디오 동기 범위를 벗어난다면 현재 오디오 프레임을 스킵하거나 지연시킴으로써 오디오 동기화를 수행하는 단계와, 비디오가 재생되어야 하는 시간을 나타내는 비디오 재생시간스탬프(PTS V )값과 상기 비디오가 복호화된 실제 시간을 나타내는 비디오 시스템 타임클록(STC V )값의 제2 차이값(TD V )을 계산하는 단계와, 상기 제2 차이값(TD V )이 기설정된 비디오 동기 범위를 벗어난다면 현재 비디오 프레임을 스킵하거나 반복함으로써 비디오 동기화를 수행하는 단계를 포 함한다. 디지털 멀티미디어 방송(DMB), 동기화(Synchronization), 역다중화부
Abstract:
An apparatus and method for classifying e-mails using a decision tree is disclosed. The apparatus includes: a client e-mail storing unit for storing e-mails according to each folder; a decision tree generating unit for generating a decision tree based on information about e-mails stored according to folders in the client e-mail storing unit; a received e-mail processing unit for receiving e-mails; an e-mail storing unit for storing the e-mails received in the receiving e-mail processing unit; an e-mail classifying unit for classifying the e-mails stored in the e-mail storing unit based on the decision tree; an e-mail transmitting unit for transmitting the classified e-mail to the client e-mail storing unit; and a controlling unit for controlling the units to generate the decision tree based on the e-mails stored in the client e-mail storing unit and to classify the e-mail transmitted from outside based on the decision tree.