Abstract: The present invention relates to an apparatus and method for obtaining a viewing channel identifier when a user desires to participate in a video broadcast in a channel the user is viewing in a section of an interactive broadcast service. The present invention may include an audio/video receiver to collect broadcast data from a user viewing channel, and extract audio/video data from the collected broadcast data, a sampling unit to sample the extracted audio/video data, a preprocessing unit to encode the sampled audio/video data, and a viewing channel determining unit to compare the encoded audio/video data to audio/video sampling data for N broadcast channels received from a channel identification server, and obtain a viewing channel identifier according to a result of comparison.

Abstract: A burst mode optical repeater is provided. The burst mode optical repeater receives optical signals, which are transmitted from a plurality of optical network units (ONUs) in a passive optical network (PON) to a central office using a time division multiplexing access (TDMA) method, and relays the received optical signals using an optical-electrical-optical (OEO) method. Since the burst mode optical repeater can be installed anywhere between an optical line terminal (OLT) and the ONUs, the number of subscribers and transmission range that can be supported by a corresponding network can be increased.

Abstract: Provided is an apparatus and method for setting a sensor node to be automatically connected. An apparatus for setting a connection of a sensor node may include: a data receiver to receive, from the sensor node, sensor data that is measured by the sensor node; a node type determining unit to determine a type of the sensor node based on the received sensor data; and a sensor node setting unit to set the sensor node to be automatically connected based on the determined type of the sensor node.

Abstract: Disclosed is an intermediate node apparatus for configuring a sensor network and a sensor data processing method using the intermediate node apparatus. The intermediate node apparatus may deliver sensor data measured by a sensor node apparatus to a neighboring node apparatus and may store the sensor data in a database.

Abstract: There are provided a sensor data processing apparatus, and a sensor data distributed processing system including the same. The sensor data distributed processing system includes: a plurality of sensors; one or more sensor data processing apparatuses each configured to compress a sensor signal received from at least one of a plurality of sensors, to create a compressed sensor signal, to adjust the sensor signal based on a reliability of the sensor signal, to analyze the adjusted sensor signal to provide analysis data, to synchronize the compressed sensor signal with the analysis data, to transmit the synchronized sensor data, and to provide management data to a corresponding sensor; and a sensor data management apparatus configured to monitor synchronized sensor data received from each sensor data processing apparatus, and to provide management data to the sensor data processing apparatus.

Abstract: Provided is a method of obtaining spatial images on demand. The server segments a spatial image into a plurality of regions to detect an isolated region whose continuity with peripheral regions is less than a threshold value, generates geographic information corresponding to the detected isolated region, and generates a capture request message including the generated geographic information. In addition, the capture request message may be transmitted to at least one terminal using unicast scheme, a multicast scheme, an anycast scheme, or a broadcast scheme. The capture request message may comprise a capture condition value such as a capture direction, a capture angle, a capture time, a zoom information and an exposure value. At least one terminal which meets the capture condition value within the capture request message transmits a captured image to the server.

Abstract: Disclosed are a method and an apparatus for coding a stereoscopic video. The method of coding a stereoscopic video includes coding an original reference image; performing preprocessing based on the original reference image, a decoded reference image, and an original additional image; coding the original addition image based on the original additional image and an improved decoding image obtained by performing the preprocessing; and performing postprocessing based on the original additional image and a decoded additional image.

Abstract: Disclosed is a broadcast advertisement service system based on media ID matching, including: a broadcast-contents receiving terminal for receiving broadcast contents from a broadcasting system for a TV broadcaster and displaying the broadcast contents; a server for an AR advertisement broadcaster for receiving the broadcast contents from the broadcasting system for the TV broadcaster, generating a first media ID lookup table from the broadcast contents, and searching for AR advertisement data linked with on-air broadcast contents by referring to the first media ID lookup table; and a user terminal for acquiring the on-air broadcast contents in real time from the broadcast-contents receiving terminal, generating a second media ID lookup table from the acquired on-air broadcast contents, receiving the AR advertisement data linked with the on-air broadcast contents from the server for the AR advertisement broadcaster, and mixing and displaying the acquired on-air broadcast contents and the received AR advertisem

Abstract: A continuous connectivity-lacking network environment-based node apparatus, node management apparatus, communication system, and node management method are provided. The node management apparatus includes a communication unit configured to receive node information from the mobile node through an additional communication network, which is separate from a continuous connectivity-lacking network, and transmit contact information generated by a control unit regarding one or more neighboring nodes of the mobile node to the mobile node via the additional communication network; and the control unit configured to generate the contact information based on the node information received by the communication unit. Accordingly, it is possible for the mobile node to quickly set a communication link and search for any neighboring communicable node.

Abstract: Disclosed is a method for locating wireless nodes using difference triangulation, including: storing information transmitted from three or more fixed wireless nodes while moving on a movement path; calculating displacement vectors among three or more measurement points sharing the information of three or more fixed wireless nodes on the movement path; calculating positional information of the mobile wireless node at another measurement point by reflecting the calculated displacement vectors to the positional information of the mobile wireless node calculated at a measurement point of a region where a location of at least one fixed wireless node is known; and calculating positional information of a location-unknown fixed wireless node by the positional information of the mobile wireless node calculated at the three or more measurement points and information received from the location-unknown fixed wireless node.

Abstract: Provided is a mobile device for a personalized service including: a media receiving unit acquiring broadcasting contents during expressing in a broadcast viewing terminal device; and a comparing unit generating a media ID based on the broadcasting contents acquired in the media receiving unit, comparing the generated media ID with a media ID in a media ID list received from a media ID server to identify a channel ID, and transmitting a personalized service request message including the identified channel ID and a user ID to a personalized information providing server to request a personalized service.

Abstract: Disclosed is a multicast controlling apparatus and method in a multi hop network. The multicast controlling apparatus in the multi hop network includes a packet determining unit to receive a packet from a group management query device or a station, and to determine whether the received packet is a group management protocol packet, a packet type distinguishing unit to distinguish a type of the received packet when the received packet is determined as the group management protocol packet, and a packet transmitting unit to transmit the packet to a second port excluding a first port that receives the query message, when the received packet is determined as the query message.

Abstract: Disclosed is a 3D video display device providing a first video inputted into a left eye and a second video inputted into a right eye, the 3D video display device including: a control information acquiring device receiving control information; and a 3D broadcasting receiving device controlling a binocular disparity between the first video and the second video by using the control information transferred from the control information acquiring device as a key. According to the present invention, since a 3D video is reconfigured considering a distance between the user and the 3D video display device acquired by a control information acquiring device, a user's preference, or the like, it is possible to provide the 3D video in which a user can perceive optimal depth perception.

Abstract: Disclosed is a system of transporting multimedia based on network, and more particularly, to an apparatus for inserting, transporting and extracting a timestamp through a network protocol. A network timestamp is transported without changing a preset transport standard such as a UDP, an RTP and a MPEG-2 standard by adding a packet having a timestamp, which is used to compensate for network jitter and used for synchronization, to a packet stream transported through a UDP or an RTP.

Abstract: A multicast communication method, a multicast communication apparatus and a multicast communication system in a network environment lacking a continuous connectivity. The source node device selects a group leader device which is able to forward data to group member devices belonging to a multicast group, and forwards the data to the selected group leader device, thereby reducing traffic between node devices, improving network reliability and saving the communication cost.

Abstract: A data reception apparatus is disclosed. The data reception apparatus includes a strobe extractor for receiving a transmission signal and extracting a strobe signal from the transmission signal, the transmission signal including the strobe signal inserted between data signals and a clock signal following the strobe signal, the strobe signal having a different magnitude from a magnitude of a data signal, and the clock signal having an equal magnitude to the magnitude of the data signal, a clock recoverer for recovering the clock signal from the transmission signal, using the extracted strobe signal, and a sampler for sampling the data signals included in the transmission signal in response to the recovered clock signal. The probability of generating a timing skew error in the time interval between a clock signal and a data signal is minimized. Even though the level of a common component might change, the clock signal can be recovered accurately and the size of the clock recovery circuit can be reduced.

Abstract: A method for cleaning a water purifier comprising: a filtering unit; a water tank unit for storing purified water having passed through the filtering unit; and a discharging unit for discharging out the purified water stored in the water tank unit, the method comprises: a cleaning water supplying step of supplying cleaning water in which a cleaning agent is dissolved to the water tank unit; a cleaning water discharging step of discharging the cleaning water when a predetermined time has lapsed; a rinsing water supplying step of supplying rinsing water to the water tank unit when the cleaning water discharging step has been completed; and a rinsing water discharging step of discharging the rinsing water when a predetermined time has lapsed. In the method, cleaning and rinsing processes for a water purifier are automatically executed by a series of consecutive processes. Accordingly, a user can directly clean the water purifier if necessary without requiring a Codi's visit.

Abstract: A fragmentation repetition detection apparatus (410) for detecting an IP fragmentation repetition which may occur in a multicast or unicast environment is provided. The fragmentation repetition detection apparatus (410) includes a packet capturing unit (411) which captures a received packet, a fragmentation repetition detector which detects whether or not the captured packet is a packet which is repetitively fragmented, and a path maximum transmission unit (PMTU) transmitter (414) which transmits PMTU information acquired by the fragmentation repetition detector (412) to a server which transmits the packet when the captured packet is a packet which is repetitively fragmented. Since a packet is transmitted by readjusting a PMTU, a fragmentation of an IP packet can be prevented.

Abstract: Provided are a semiconductor device and a method of fabricating the semiconductor device. The semiconductor device can provide a trench MOS transistor having an up-drain structure. The semiconductor device can include a first conductive type well in a semiconductor substrate, a second conductive type well on the first conductive type well, trenches formed by removing portions of the second conductive type well and the first conductive type well; gates provided in the trenches with a gate dielectric being between each gate and the walls of the trench, a first conductive type source region and a second conductive type body region on the second conductive type well, the first conductive type source region surrounding a lateral surface of the gate, and a common drain between the gates, the common drain being connected to the first conductive type well.

Abstract: A subscriber terminal-based personalized broadcast service system and method are provided. The subscriber terminal-based personalized broadcast service method includes receiving broadcast program schedule information from a broadcast head-end and receiving content schedule information from at least one content server; creating a personalized channel schedule in which a plurality of broadcast programs and a plurality of contents are arranged according to time with reference to the broadcast program schedule information and the content schedule information; and receiving a broadcast program or a content requested with reference to the personalized channel schedule from the broadcast head-end or the content server. Therefore, it is possible for a subscriber to view various broadcast programs and contents at any desired time.