Abstract: Provided is an apparatus for matching Gigabit Ethernet (GbE) signals to an Optical Transport Hierarchy (OTH). The apparatus real-time records a source address and input port information of GbE Ethernet frames in a memory, compares a destination address of the Ethernet frame which is a payload of a GFP frame with memory table information, searches an output port location of the GbE, and interreceives GbE frames and Generic Frame Procedure (GFP) frames by multiplexing/demultiplexing.

Abstract: Provided is a method of providing an Internet Protocol (IP)-based mobility service, particularly, a method of providing seamless quality of service (QoS) guarantees when an IP-based mobile service is provided. The seamless QoS management method includes: a method of providing seamless QoS guarantees when an Internet Protocol (IP)-based mobility service is provided, including: determining whether a terminal is newly registered in a network connecting unit; and providing QoS information of the newly registered terminal to the network connecting unit. Therefore, a user can successively receive a Service Level Agreement (SLA)-based service for which he or she subscribes, while moving to other places.

Abstract: A call control method for an Internet Protocol (IP)-based mobility service is provided. The call control method for ensuring service continuity in a mobile communication service environment, includes: receiving a call signal message including permanent IP addresses and transport IP addresses from a transmitter terminal and a receiver terminal, and acquiring the permanent IP addresses and the transport IP addresses of the transmitter terminal and the receiver terminal; and performing call control between the transmitter terminal and the receiver terminal on the basis of the transport IP addresses and the permanent IP addresses of the transmitter terminal and the receiver terminal.

Abstract: Provided is an apparatus and method for restoring clock signals by using a circulator in an optical transmission system. The apparatus includes a circulator, which allows one of N types of input data signals having different transmission speeds to circulate in a single direction, band pass filters, which extract N types of clock frequency components respectively corresponding to each transmission speed of the N types of input data signals, and clock amplifiers, which amplify each of the N types of clock frequency components.

Abstract: A method and apparatus for providing a video-on-demand (VOD) service are provided.

Abstract: Provided is an optical filtering apparatus which is applied to a Time Division Multiplexing Passive Optical Network (TDM-PON) based on a wavelength division multiplexing (WDM) method. The optical filtering apparatus includes: an optical signal distributing unit dividing an optical signal received from an optical line terminal into at least one optical signal with uniform output intensity, and distributing the at least one optical signal into at least one optical network unit; and a multiplexing unit combining a plurality of optical signals having different wavelengths received from the at least one optical network unit using a wavelength division multiplexing (WDM) method, and outputting the combined optical signal to the optical line terminal. Therefore, by using the optical filtering apparatus, it is possible to connect a large number of subscribers to an Optical Line Terminal (OLT) on a network such as Fiber To The Home (FTTH), thereby increasing efficiency in costs.

Abstract: Provided is a system and method for configuring environments of a private system using a smart card in a public system. The system includes a smart card that stores owner identification information, system-environment and work-environment information, private data, and payment information; a public system that authenticates a user of the smart card by using the owner identification information of the smart card and reconfigures a system and work environment similar to the private system to perform work continuously ; a service providing sever that provides an installation program or substitute program required for configuring the latest work environment of the user; and a payment server that pay a usage charge for the public system connected to the smart card.

Abstract: Provided are an apparatus and method for providing an advertisement service personalized for each user or for each group. The personalized advertisement providing method includes: a personalized advertisement providing method which is used in an Internet Protocol Television (IPTV) System, including: receiving at least one broadcasting program of a plurality of broadcasting programs classified according to a plurality of channels; and determining whether a present time is an advertisement broadcasting time, transmitting a received broadcasting program to a plurality of user terminals which selects a channel on which the broadcasting program is provided if the present time is not an advertisement broadcasting time, dividing the plurality of user terminals into a plurality of groups and transmitting an advertisement classified for each group to one or more user terminals belonging to the group if the present time is an advertisement broadcasting time.

Abstract: A protection switching method and apparatus for use in a ring network are provided. At least two switching request signals are received from a network device neighboring a link in which a failure occurs. A switching operation is performed in response to a first received signal of the at least two received switching request signals. When a network failure occurs, fast protection switching can be performed.

Abstract: Provided are a method and an apparatus for providing a continuous streaming service using an Internet protocol television (IPTV). The method comprises: receiving a request for the streaming service to be provided continuously to a different terminal while the streaming service is being provided to one terminal; converting contents data that is being provided to the terminal into contents data which is to be provided to the different terminal based on subscription information and terminal information of the different terminal in response to the request from the different terminal; and providing the streaming service of the converted contents data continuously to the different terminal. Accordingly, the streaming service which is being provided to the terminal can be continuously provided to the different terminal in real-time.

Abstract: Provided is a network-based mobility supporting method for supporting mobility of a node not having a mobility supporting function.

Abstract: An Internet Protocol Television (IPTV) broadcasting system is provided. The IPTV broadcasting system includes: An Internet Protocol Television (IPTV) broadcasting system for reducing a display delay when a channel is changed, including: a stream transmitting apparatus receiving a broadcast channel stream, generating an acceleration stream from the broadcast channel stream, and transmitting the broadcast channel stream and the acceleration stream; and a set-top box receiving the broadcast channel stream and the acceleration stream from the stream transmitting apparatus, and reproducing a decoding stream, according to a type of a received frame in the broadcast channel stream and the acceleration stream. Therefore, it is possible to reduce a display delay when a channel is changed.

Abstract: The present invention relates to a terminal control system, and more particularly, to a system and a method which allows a user to shift an IP service from a terminal to which the service is currently provided to a user's other terminal, thereby enabling the user to continuously using the IP service without disconnection.

Abstract: Provided is an apparatus for and method of automatically controlling skew between transmitted data, which is caused when a common low-speed field-programmable gate array (FPGA) transmits signals having a transmission rate in the range of tens of Gbps to an optical transponder. The apparatus and method can transmit data with a transmission rate of several Gbps irrespective of the type of the FPGA.

Abstract: Provided are a method and system for publishing presence information and a presence agent. The method includes receiving a voice message input through a terminal by a user, parsing the received voice message and extracting presence information, and publishing the extracted presence information. According to the method, a user can easily and simply publish presence information without personally using an application program based on presence service. In addition, it is possible to dynamically publish or update presence information.

Abstract: Provided are a method and apparatus for reducing picture, which can obtain a reduced picture by previously creating a picture reduction map that stores effective-pixel locations selected according to a picture reduction scale and a picture reduction algorithm, and then matching an input picture with the picture reduction map. The method for reducing picture includes constructing a picture reduction map according to a size of an incoming picture, and generating a sub-picture for reduction of an input picture by using the picture reduction map.

Abstract: Provided is a disposable multi-layered filtration device for the separation of blood plasma which can be applied to a biochip and appropriate for disposal uses. The filtration device for the separation of blood plasma includes: an upper substrate including a blood inlet; an intermediate substrate including a filtering unit for extracting blood plasma from blood flowing through the blood inlet; and a lower substrate including an air outlet, wherein the upper substrate, the intermediate substrate, and the lower substrate are stacked and adhered.

Abstract: An optical communication system and method using Manchester encoded signal remodulation are provided. The optical communication system includes a transmitter generating and transmitting a Manchester encoded optical signal including a first data stream, and a receiver receiving an optical signal obtained by dividing power of the Manchester encoded optical signal into two parts and modulating one of the two parts to include a second data stream, and recovering the second data stream. In two-way communication, the optical communication system and method allow one party to generate and transmit a Manchester encoded signal (i.e., a downstream signal) to the other party and allow the other party to generate an upstream signal by modulating the optical power of the downstream signal without using a light source.

Abstract: A method and apparatus for predicting video traffic are provided. The method includes extracting the statistical properties of previous Moving Picture Experts Group (MPEG)-4 video traffic and predicting the size of a subsequent frame based on the statistical properties of the previous MPEG-4 video traffic. Therefore, it is possible to address such problems associated with traffic bursts as transmission delays or low throughputs and thus to improve the performance of communication and network systems that transmit video traffic.

Abstract: Provided is a biometric authentication method. A biometric authentication method in accordance with an aspect of the present invention includes generating a first one-time authentication template from biometric information using one-time transform information, and requesting authentication, comparing the first one-time authentication template with a one-time registration template, updating the one-time registration template and the one-time transform information when authentication is achieved according to a result of the comparison, wherein the updated one-time transform information is used to generate a second one-time authentication template to be authenticated according to the result of the comparison with the updated one-time registration template when successive authentication is requested.