Abstract: In a system and method for providing Push To Talk (PTT) service according to a state of the user, when a PTT terminal user is absent, in conference or busy, the PTT system converts the PTT voice message directed to the PTT terminal to a text message, and displays it on a screen of another terminal or the PTT terminal. As a result, the user can immediately check the PTT message when he/she is in absence or conference state, and is busy without communication interference.

Abstract: An image display device for providing content and a method thereof. The image display device for providing content using a template, according to an exemplary embodiment of the present invention, comprises a content composition unit for composing content using a predefined template, and an agent for changing the composition of the content if an event occurs. Accordingly, the content is provided by various templates using a single template.

Abstract: A network system for recovering from a link failure in a Voice over Internet Protocol (VoIP) service comprises: a first media gateway having a current link setting and transmitting a corresponding packet upwardly for the VoIP service; a second media gateway which is link-connected to the same remote terminal as the first media gateway for the VoIP service; a media gateway controller for allocating the second media gateway for link resetting, and for transmitting allocation information when receiving failure information of a link set through the first media gateway; and a router for determining whether a packet transmitted from the first media gateway is received within a set time to determine whether there is a failure of the set link, for transmitting the link failure information to the media gateway controller, and for resetting the link to the second media gateway according to the allocation information transmitted from the media gateway controller when there is a link failure.

Abstract: A semiconductor memory device that performs an error control operation when an error exists in an externally received command or an externally received address, and a method of driving the semiconductor memory device are provided. The semiconductor memory device includes a memory cell array having a single-level cell area and a multi-level cell area, a command decoder which receives a command from an external source and decoding the command, an area determination unit which receives an address from an external source and determines whether a memory cell corresponding to the address belongs to either the single-level cell area or the multi-level cell area, a command flag generation unit which generates at least one enable control signal according to the decoded command and the determination result, and a logic circuit which generates a control signal for driving the memory cells included in the memory cell array or performs an error control operation, in response to the enable control signal.

Abstract: In a symmetric network address translation system using a Simple Traversal of UDP over NAT (STUN) technique and a method for implementing the same, a voice over Internet protocol (VoIP) network includes a STUN server for transmitting, to a private network terminal, a public Internet Protocol (IP) address and first port information of a router which is used for a VoIP call. The private network terminal transmits a session setup request message, including the public IP address and the first port information of the router, through its private IP address and a second port, and the router maps and stores the public IP address and the first port information of the router, and the private IP address and the second port of the private network terminal, and routes a packet received through the public IP address and the first port to the private IP address and the second port. Thus, a VoIP call is performed using the symmetric network address translation system to which the STUN technique is applied.

Abstract: A method for guaranteeing Quality of Service (QoS) using bandwidth reservation in a switch includes: establishing a MAC table including MAC addresses of terminals connected to each port of the switch and an identifier indicating whether or not the corresponding terminal is a VoIP terminal; calculating a VoIP bandwidth necessary for each port based on information of the MAC table, calculating a ratio of an entire bandwidth to a bandwidth equal to the entire bandwidth minus the VoIP bandwidth, and setting the ratio as a port ratio of the switch; determining whether or not the corresponding packet is a VoIP packet by filtering the MAC address of the corresponding packet upon an arbitrary packet of the switch being input; and passing the corresponding packet upon a determination that the corresponding packet is a VoIP packet, and passing the corresponding packet only when the bandwidth of the corresponding packet is within a permissible limit of the set port ratio by performing port ratio control upon a determina

Abstract: A semantic client, a semantic information management server, a method of generating semantic information, a method of searching semantic information, and a computer program recording medium for performing the methods, the semantic client including: an identification (ID) generator to generate an ID of a target content; and a descriptor generator to generate a descriptor that defines correlations between the target content and one or more other contents. Furthermore, the semantic information management server includes: a semantic information database (DB) to store a descriptor including information about an ID of contents and correlations among the contents and other contents related to the contents; and an agent to search semantic information of the related contents with reference to the semantic information DB. Therefore, since contents have their own IDs, a user can easily search the contents.

Abstract: An Internet Protocol Television (IPTV) which collects content information from content providers and a method and system for providing the IPTV with the content information are provided. The IPTV includes a connection unit which enables the IPTV to be connected to the Internet for data transmission or reception over the Internet, a content information collection unit which collects information about content created by IPTV content providers over the Internet, a content information processing unit which creates standard metadata by processing the collected content information, a storage unit which stores the standard metadata, and an output unit which displays the content information of at least one channel by using the standard metadata.

Abstract: Provided is a service access control system using an embedded browser agent. The service access control system includes: a server providing an Internet protocol service; and a browser agent including device information and service information and controlling the access of a device to the server. When the service access control system is used, device dependence can be minimized in an embedded browser-based IPTV service, and the IPTV service can be freely used by utilizing only a browser.

Abstract: A program-based electronic program guide (EPG) system is provided, the EPG system including a search unit which searches for and finds programs broadcast within a predetermined time period around a predetermined time, a collection unit which collects program information of programs found by the search unit, a classification unit which classifies the program information collected by the collection unit based on program codes, and a display unit which displays program guide information, including the program information classified by the classification unit.

Abstract: An Internet Protocol Television (IPTV) capable of auto channel setting and a method thereof are provided. A channel information generating unit converts summaries of a plurality of web contents provided through the Internet into channel information as required by channel listing, and allocates channel numbers to the plurality of web contents, and a storage unit stores the allocated channel numbers and the generated channel information.

Abstract: A user terminal and proxy server of an Internet Protocol Television (IPTV), and an operating method thereof are provided. A user terminal of an IPTV system includes a channel information input unit which receives channel information as an input, a channel management unit which transmits the input channel information to a proxy server, and receives from the proxy server a content information that corresponds to the channel information, and a content playback unit which replays a content using the received content information. As a result, viewers can use IPTV contents as easily as they use general TVs.

Abstract: A voice over Internet protocol (VoIP) gateway includes a foreign exchange office (FXO), a foreign exchange station (FXS), and a VoIP processor. A controller of the VoIP gateway sets the VoIP gateway to either a TANDEM (trunk and ENM (ear and mouth)) mode or a standalone mode. In the TANDEM mode, the VoIP gateway transmits an incoming call from the VoIP processor to the FXO and an outgoing call from the FXS to the VoIP processor. In the standalone mode, the VoIP gateway transmits the incoming call from the VoIP processor to the FXS and the outgoing call from the FXS to the VoIP.

Abstract: An apparatus for automatically configuring an album includes an album-creating unit to create an album by using a folder name when at least one folder having the folder name is moved to a selected area, a cover-image-registering unit to register a cover image of the album created by the album-creating unit, and a content-registering unit to register content included in the folder to the album.

Abstract: A portable storage device, a system, and a method for an automatic software installation, the portable storage device including: an interface to connect to an external device to transmit and/or to receive data to/from the external device; a memory to store a setup program to install, in the external device, a main software required to connect the portable storage device to the external device; and a controller to control the interface to transmit the setup program to the external device when the interface is connected to the external device, wherein the setup program is transmitted to the external device and automatically run in the external device. Accordingly, when the portable storage device is connected to the external device, the software can be automatically installed by auto-running the setup program internally stored to the portable storage device.

Abstract: A call setup method and terminal in an IP network, in which in response to a request for an outbound call from a first terminal, it is identified whether or not an index matching an identification of a second terminal exists in a matching table. The identification of the second terminal is inputted at the request for the outbound call. If the index matching the identification of the second terminal exists in the matching table, a call initialization message is directly transmitted to the second terminal. In response to call setup, a call state synchronization message is transmitted to a call manager.

Abstract: A semiconductor memory device that performs an error control operation when an error exists in an externally received command or an externally received address, and a method of driving the semiconductor memory device are provided. The semiconductor memory device includes a memory cell array having a single-level cell area and a multi-level cell area, a command decoder which receives a command from an external source and decoding the command, an area determination unit which receives an address from an external source and determines whether a memory cell corresponding to the address belongs to either the single-level cell area or the multi-level cell area, a command flag generation unit which generates at least one enable control signal according to the decoded command and the determination result, and a logic circuit which generates a control signal for driving the memory cells included in the memory cell array or performs an error control operation, in response to the enable control signal.

Abstract: A method and apparatus for managing blog information. The blog information managing device includes a blog information managing module to manage blog information about content and a loading module to read out the blog information and to upload the content to a website according to the blog information.

Abstract: In a Voice over Internet Protocol (VoIP) terminal supporting an optimal intercom service and a session connecting method thereof, a VoIP terminal announcement module of the VoIP terminal performs an announcement process by transmitting address information of the VoIP terminal to other terminals located in a same network, and acquires address information of said other terminals. If the address information acquired by the VoIP terminal announcement module includes information of a counterpart terminal called by a user, a call controller sends a session connecting invite message directly to said counterpart terminal using the acquired address information of the counterpart terminal. As a result, it is possible to provide intercom service to a user without going through an external SIP proxy server.

Abstract: A voice over Internet protocol (VoIP) gateway includes a foreign exchange office (FXO), a foreign exchange station (FXS), and a VoIP processor. A controller of the VoIP gateway sets the VoIP gateway to either a TANDEM (trunk and ENM (ear and mouth)) mode or a standalone mode. In the TANDEM mode, the VoIP gateway transmits an incoming call from the VoIP processor to the FXO and an outgoing call from the FXS to the VoIP processor. In the standalone mode, the VoIP gateway transmits the incoming call from the VoIP processor to the FXS and the outgoing call from the FXS to the VoIP.