Abstract: Provided is a human body communication method using a multi-carrier modulation method, in which users do not interfere with each other in an environment with several users, and stable communication is possible when users are exposed to strong interference generated at other electronic devices. Also, provided are a multi-carrier modulation method, in which data between communication devices connected to a human body used as a channel is divided into a plurality of sub-channels and the data is transmitted by loading it on each of a plurality of sub-carrier signals, and a multi-connection method using the multi-carrier modulation method. The plurality of sub-channels having a predetermined bandwidth include several sub-carriers, and by changing a modulation method applied to the sub-carriers, stable communication can be realized.

Abstract: Provided is a time division multiplex (TDM)/wavelength division multiple access (WDMA) passive optical network (PON) device. The TDM/WDMA PON device comprises a base station terminal, a wavelength splitter, and a subscriber terminal optical transceiver. The base station terminal comprises a transmitter time-division-multiplexing and simultaneously modulating and outputting a plurality of different wavelength optical signals, an optical circulator transmitting the optical signals output from the transmitter to an optical distribution network and transmitting optical signals received from the optical distribution network to a receiver and the receiver demultiplexing wavelength division multiplexed upstream signals from the optical distribution network through the optical circulator, converting the demultiplexed upstream signals into a plurality of electrical signals, and delivering the electrical signals to an upper layer.

Abstract: There is provided a user device for providing customized contents, including: a data receiving unit for receiving user multimedia data from outside; an authoring information setting unit for setting user authoring information on the user multimedia data upon a user's request; a data encoding unit for encoding the user multimedia data and the user authoring information to generate contents data; a data transmission unit for transmitting the generated contents data to a customized contents authoring device through a network; a data receiving unit for receiving authorized data transmitted from the customized contents authoring device; and a data output unit for extracting the customized contents data from the received customized data and outputting the extracted contents data.

Abstract: A network node and method for guaranteeing the role of an optical supervisory channel (OSC) in an optical transport network (OTN) are provided. In the network node, at least two OSC units are multiplexed, one of the OSC units is set as a main unit, the other OSC unit is set as an auxiliary unit; and the auxiliary unit is activated when the main unit cannot be operated. Thereby, the network node can guarantee the stable role of the OSC.

Abstract: Provided is an apparatus and method for automatically controlling power of a video appliance. The apparatus for automatically controlling power of a video appliance includes an image input unit for capturing a viewer's posture, a posture detection unit for detecting posture information from the image captured by the image input unit, a horizontal-level calculation unit for calculating a horizontal level by using the posture information detected by the posture detection unit and comparing the calculated horizontal level with a preset reference horizontal level, an alert-sound output unit for outputting an alert sound corresponding to the horizontal level compared by the horizontal-level calculation unit; and a power-signal transceiver unit for outputting a power-off signal to the video appliance corresponding to the horizontal level compared by the horizontal-level calculation unit.

Abstract: Provided a secure pattern recognition method. The method includes: receiving data and generating a probe by converting the received data into a template for pattern recognition; accessing a gallery that is a template registered and stored in advance; determining a region to which the probe belongs and obtaining the center point of the region; obtaining a hash value of the center point and coordinate of the probe; and determining whether or not the hash value of the center point and a hash value stored in the gallery are equal and determining whether or not the probe and the gallery are classified into the same class by calculating whether or not the coordinate of the probe is inside a decision boundary configured with thresholds on the basis of the coordinates of the center point.

Abstract: An apparatus and method for monitoring quality of an optical signal in an optical network based on wavelength division multiplexing optical transmission technology are provided, which are capable of monitoring the quality of an optical signal with higher accuracy. The apparatus includes: a signal extractor extracting an optical signal having a specific wavelength from input optical signals; an optical-electrical converter converting the extracted optical signal having the specific wavelength into an electrical signal; an overhead parser extracting a part of an overhead of the electrical signal to parse whether or not the quality of the signal is degraded; and a controller monitoring the quality of the optical signal according to the parsing result of the extracted overhead and restoring the optical signal whose quality is lower than a predetermined reference value.

Abstract: An apparatus and method for protection switching of an optical channel at each node in an optical network based on wavelength division multiplexing optical transmission technology are provided. The method can be applied to any node having at least two optical fiber inputs and outputs. The apparatus includes: a splitter receiving an electrical signal and splitting the received electrical signal into a plurality of electrical signals which are substantially identical to the received electrical signal; an output switching unit selecting output paths of the electrical signals split by the splitter according to an optical channel path control command of the optical network; and a plurality of optical transponders being assigned to the respective output paths of the electrical signals, converting the electrical signal input by the selection of the output switching unit to an optical signal, and transmitting the converted optical signal to another node of the optical network.

Abstract: Provided are a fingerprint recognition apparatus and method which are capable of protecting registered fingerprint data and recognizing a fingerprint more quickly and accurately. In the fingerprint recognition apparatus, a fingerprint image generator generates fingerprint image data of an input fingerprint, and a memory stores registration fingerprint data for authentication. In a registration mode, a fingerprint recognition processor transforms the fingerprint image data into the irreversible registration fingerprint data using a specific transformation scheme, and stores the transformed registration fingerprint data. In an authentication mode, the fingerprint recognition processor transforms the fingerprint image data into comparison fingerprint data using the specific transformation scheme, compares whether the comparison fingerprint data is identical to the registration fingerprint data, and controls the authentication process according to the comparison result.

Abstract: There is provided an apparatus for transmitting and receiving data with various data capacity at high speed. The apparatus for transmitting and receiving data includes a client signal interface block converting client signals being received through media into a high-capacity electrical signal and selectively interfacing the converted high-capacity electrical signal through high-speed multi-channel; a framer receiving the selectively interfaced electrical signal from the client signal interface block and multiplexing and mapping the received electrical signal into 40 G multi-channel frame signals; and a SERDES & transceiver receiving the 40 G multi-channel frame signals from the framer, multiplexing the received multi-channel frame signals with the 40 G serial signals and transmitting the multiplexed 40 G serial signals.

Abstract: A method for providing an IM (Instant Messenger) based personal broadcasting service includes when a lower node in a first group requests an upper node in the first group to transmit a broadcasting content, transmitting, at the upper node in the first group when a lower node in first group requests an upper node in the first group to transmit a broadcasting content, the broadcasting content to the lower node in the first group, and transmitting, at the lower node in the first group that receive the broadcasting content, the broadcasting content to a lower node in a second group where the lower node in the first group operates as an upper node.

Abstract: There are provided a wideband electric signal mixer capable of mixing two inputted electric signals having a wideband frequency spectrum. The wideband electric signal mixer includes an input terminal controlling an input interface and a phase of a differential signal of a first electric signal and a second electric signal, having a wideband spectrum; a signal mixing terminal comprising a transmission gate switch receiving and outputting the second electric signal and mixing the first electric signal with the second electric signal by turning the transmission gate switch on and off using the differential signal of the first electric signal passing through the input terminal; and an output terminal providing an output interface between a mixing signal outputted from the signal mixing terminal and an external circuit unit and amplification function of the mixing signal.

Abstract: Provided are an optical transponder that interfaces a multiprotocol signal and a method of interfacing a multiprotocol signal. The optical transponder includes: an optical transceiver, which optical/electrical converts and multiplexes/demultiplexes an input signal; a reception clock generator, which generates a clock on a reception path; a transmission clock generator, which generates a clock on a transmission path; an optical transport hierarchy (OTH) framer, which processes an OTH signal when the input signal is the OTH signal; a synchronous digital hierarchy (SDH)/synchronous optical network (SONET) framer, which processes an SDH/SONET signal or a gigabit Ethernet (GbE) when the input signal is the SDH/SONET signal or the GbE signal; and a controller which controls the optical transceiver, the reception clock generator, the transmission clock generator, the OTH framer, and the SDH/SONET framer according to the type of the input signal.

Abstract: Provided are a method and an attestation system for preventing an attestation replay attack. The method for preventing an attestation replay attack in an attestation system including an attestation target system and an attestation request system, the method including: measuring associated components when an event that affects the integrity of the attestation target system occurs; perceiving own identity information and verifying the perceived identity information; extending the measured component and the identity information into a register and logging the measured component and the identity information; generating an attestation response message including values of the log and the register when an attestation request message is received from the attestation request system; and transmitting the generated attestation response message to the attestation request system.

Abstract: Provided are system and method for multi-protocol label switching (MPLS) label-switched path (LSP) protection switching in an MPLS system employing a working LSP and a protection LSP in a 1:1 mode, the apparatus and method prepare a dedicated LSP for one working LSP and are capable of rapidly processing a forward defect indication (FDI)/backward defect indication (BDI) signal when a failure occurs on the working LSP. The system includes: an ingress node multicasting input MPLS traffic through the working LSP and the protection LSP using a fed-back BDI signal; a transit node relaying the MPLS traffic input from the ingress node, and generating a FDI signal when the failure occurs; and an egress node extracting the MPLS traffic from the MPLS LSP input from the transit node, and when the FDI signal is detected, inserting and feeding back the BDI signal to the ingress node through a return path and performing switching to the protection LSP.

Abstract: Provided are a method and system for supporting IPv6 Neighbor Discovery in a point-to-point oriented broadband wireless network. The method includes: an access router in the broadband wireless network receiving a message from a first subscriber station in the broadband wireless network; the access router detecting a Neighbor Discovery message from the received message; and the access router relaying the Neighbor Discovery message to a second subscriber station in the broadband wireless network. The method can support IPv6 Neighbor Discovery where hosts in the point-to-point oriented broadband wireless network share one or multiple prefixes.

Abstract: Provided is a multi-ring network operating method of cross-connecting at least two ring networks, the method including connecting an input working ring and an input protection ring of a ring network to an output working ring and an output protection ring of another ring network and then performing cross-connection between the same or different ring networks by using a multi-dimensional cross-connect apparatus. In the multi-ring operating method, a plurality of ring networks can be connected regardless of the protection method used by the ring networks, and the original protection method of each ring network can remain after they are connected.

Abstract: Provided are an operation circuit for a modified Euclidean algorithm in a high-speed Reed-Solomon (RS) decoder and a method of implementing the modified Euclidean algorithm. Since a finite state machine (FSM) for generating a stop signal and an FSM for generating a control signal that controls a swap operation, a shift operation, and a polynomial operation for each basic cell of the modified Euclidean algorithm are used, an area-efficient RS decoder can be realized without using a conventional degree computation unit for comparing and calculating degrees.

Abstract: A method of protecting personal information on the Internet, and an apparatus thereof are provided. The method includes: sensing transmission through the Internet of personal information of a user; detecting information on a website that is the destination of the sensed transmission of the personal information; comparing information on the detected website with a personal information protection policy; and permitting or blocking the transmission of the personal information according to the comparison result. According to the method, in order to minimize leakage of personal information from a website, when user information is input to the website, providing of the personal information is controlled based on information on whether or not the website is reliable in terms of personal information protection such that providing of the personal information to a dangerous website can be prevented, and possible damage by leakage of personal information can be prevented in advance.

Abstract: An apparatus and method for providing a service that securely and easily shares personal information using a signed callback uniform resource locator (URL) message in a mobile terminal environment are provided. The mobile terminal providing a personal information sharing service using a signed URL message includes; a personal information sharing service module which receives a message that includes a first callback URL and a personal information sharing request and is signed using a private key of a server, and creates a second callback URL by adding a user response result in response to the personal information sharing request to the first callback URL; and an authentication module which verifies a signature of the message using a public key of the server, and signs the second callback URL using a user private key.