Abstract:
구조 요청자의 위치를 빠르고 정확하게 검출할 수 있고, 검출된 구조 요청자의 위치까지 신속하게 도달할 수 있도록 하는 긴급구조 시스템의 비콘 위치 검출 방법이 개시된다. 긴급구조 시스템의 비콘 위치 검출 방법은, 긴급구조 신호를 수신하는 단계, 상기 긴급구조 신호가 발생한 지점으로 예측되는 광역 검출영역으로 이동하는 단계, 상기 광역 검출영역 내에서 비콘(beacon) 신호를 발생시키기 위한 활성신호를 송출하는 단계, 상기 비콘 신호를 수신하는 단계, 상기 수신된 비콘 신호의 수신신호 파노라마를 작성하는 단계, 상기 수신된 비콘 신호를 바탕으로 상기 비콘이 존재한다고 예측되는 후보 검출영역을 산출하는 단계, 상기 후보 검출영역의 범위와 기설정된 위치 검출의 허용 오차를 비교하는 단계 및 상기 비콘 위치를 확정하는 단계를 포함하여 구성된다. 따라서, 구조 요청자의 비콘 신호를 수신하고 수신된 비콘 신호를 이용하여 이동하는 데 필요한 비용을 산출함으로써 상기 구조 요청자의 위치인 비콘 위치를 빠르고 정확하게 검출할 수 있으며, 상기와 같이 산출된 이동 거리를 따라 이동함으로써 상기 비콘 위치까지 신속하게 도달할 수 있다. 긴급구조, 능동형 위치검출, 비용 계산
Abstract:
본 발명은 다양한 단말기환경에서 효과적으로 구현될 수 있는 NVOD 서비스방법에 관한 것으로, 동영상을 포함하는 비디오 데이터를 네트워크에서 다수의 단말기로 전송하는 NVOD 서비스 방법에 있어서, 비디오의 재생대역폭에 대한 단말기의 상대적인 네트워크 대역폭(m)을 확인하는 대역폭 확인단계; 비디오 데이터를 분할함에 있어서, 분할크기를 상기 m에 따라 분할서열별로 다르게 분할하는 비디오 데이터 분할단계; 및 상기 비디오 데이터 분할단계에서 분할된 데이터를 다수의 채널을 통해 상기 단말기에 전송하는 데이터 전송단계를 포함하는 것이다.
Abstract:
An efficient near video on demand (NVOD) service for various client environments is provided. The NVOD service method for transmitting video data including moving pictures to a plurality of clients in a network includes identifying a relative network bandwidth “m” of a client with respect to a video playout bandwidth, dividing the video data into data segments having different sizes according to the relative network bandwidth “m” and transmitting the data segments to the client through a plurality of channels.
Abstract:
Provided is a method for exemplar-based inpainting in a multi-scaled space using a Laplacian pyramid which can reflect both structural features and texture features at the same time in every process of performing inpainting using a Laplacian pyramid. The method for exemplar-based inpainting in a multi-scaled space using a Laplacian pyramid proposed by the present invention comprises a step of constructing a Laplacian pyramid image comprising multiple layers using input images. Also, the method for exemplar-based inpainting in a multi-scaled space using a Laplacian pyramid comprises a step of performing inpainting reflecting structural features of a low frequency region and texture features of a high frequency region using the Laplacian pyramid image.
Abstract:
PURPOSE: A three-dimensional active position tracking system and a method thereof are provided to precisely trace a position of a target within a building. CONSTITUTION: A three-dimensional(3D) active position tracking system comprises a 3D position tracking antenna part(210), a received signal strength calculation part(220), a direction estimation part(230), and a position tracking part(240). The 3D position tracking antenna part includes a plurality of directional antennas. The directional antennas are three-dimensionally arranged in order to have different orientation directions. The received signal strength calculation part calculates received signal strength of a beacon signal with respect to the directional antennas in order to output a plurality of vector values corresponding to the directional antenna. The direction estimation part adds up the vector values in order to calculate a beacon signal generation direction. The position tracking part traces the location of a target terminal which transmits the beacon signal based on the beacon signal generation direction.
Abstract:
PURPOSE: An emergency rescue system and a method for detecting position are provided to transmit an emergency rescue signal to a terminal in remote site within constant distance from the terminal using a zigbee module even in case a rescue request person does not possess the terminal. CONSTITUTION: A zigbee module generates a rescue request signal. A terminal receives the rescue request signal and sends to a central control chamber using conventional communications network. The central control chamber receives the rescue request signal and detects a broad area location using the location of the terminal and dispatches a rescue team. The rescue team moves to the broad area location and detects the location of the zigbee module by directly receiving the rescue request signal generated from the zigbee module.
Abstract:
PURPOSE: A node of a zigbee network for the selection of a parent node, a method for parent node selection, and a reliability model measurement method of the zigbee network are provided to differently apply a reliability model to network configuration according to the installation location of a sensor node and the design of a node. CONSTITUTION: A communication unit(140) receives each reliability model of neighbor nodes from the neighbor node. Using a received reliability model, a parent node selecting unit(150) selects one of the neighbor node as a parent node. The parent node selecting unit selects a plurality of candidate parent nodes with an LQI(Link Quality Indicator) and hop for the each neighbor node. The parent node selecting unit selects a node having the greatest reliability of the candidate parent node as the parent node.
Abstract:
PURPOSE: An apparatus and a method for automatically controlling area enlargement function in PTZ(Pan, Tilt, Zoom) camera is provided to automatically enlarging selected area by calculating variable amount of zoom using extracted specific points from PTZ image and interested image. CONSTITUTION: If an enlargement magnification rate is less than a preset enlargement range, an automatic area enlargement control unit moves a photographing position of the PTZ camera to a moving position(220,226). If the magnification rate exceeds a preset magnification range, the automatic area enlargement control unit moves the photographing position of the PTZ camera to the moving position(222). The automatic area enlargement control unit changes the currently set magnification rate of PTZ camera to the calculated magnification rate.
Abstract:
PURPOSE: A system and a method for preventing the occurrence of a missing child are provided to continuously check a distance between a location transmitter and a location receiver, thereby preventing a situation of a ward to be a missing child in advance. CONSTITUTION: A location transmitter(10) periodically sends a location signal. A location receiver(20) receives the location signal and determines spaced distance with the location transmitter. If the spaced distance escapes the preset range, the location receiver generates an alarm signal. The location transmitter and the location receiver directly exchanges signals wirelessly in a close distance. The location transmitter is mounted to a mobile phone of a guardian.
Abstract:
PURPOSE: A method for detecting beacon position of emergency rescue system is provided to calculate movement cost using beacon signal received from a person in emergency. CONSTITUTION: A method for detecting beacon position of emergency rescue system comprises: a step of receiving emergency rescue signal from a person in emergency(S1); a step(S2) of detecting wide detection area where the person is predicted through analysis of emergency rescue signal(S3); a step of operating a position detector and sending beacon activating signal; a step of making received signal panorama of beacon signal received using antenna interface(S4); and a step of detecting range and orientation of candidate detecting area.