Abstract: A network system connected with one or more master devices and a method for operating the same. The system and method enable a new master device to be automatically connected to a network, when the network system is newly constructed or when the new master device is additionally connected to the network with which at least one master device has already been connected. A plurality of slave devices are connected to the network constructed within a building to transmit and receive data through the network. At least one master device controls the slave devices. A network manager automatically assigns a network address to the master device to appropriately connect the master device to the network when the master device is newly connected to the network or additionally connected to the network with which an existing master device is connected.

Abstract: A home network system and a method for operating the same configured to be capable of recovering system and user data of a home server by allowing a user to press a recovery button when the home server cannot recover from a functional error of the home server. Initial system data of the home server, controlling and managing a home network connected to a plurality of home appliances, is automatically stored in an internal database as backup data. Data updated in the home server is periodically transmitted to a portal server connected to the home server through the Internet. Therefore, data, damaged due to a functional error of the home server, can be automatically recovered by using the backup data stored in the portal server.

Abstract: A network system connected with one or more master devices and a method for operating the same. The system and method enable a new master device to be automatically connected to a network, when the network system is newly constructed or when the new master device is additionally connected to the network with which at least one master device has already been connected. A plurality of slave devices are connected to the network constructed within a building to transmit and receive data through the network. At least one master device controls the slave devices. A network manager automatically assigns a network address to the master device to appropriately connect the master device to the network when the master device is newly connected to the network or additionally connected to the network with which an existing master device is connected.

Abstract: A home network system and a method for operating the same, the system and method being capable of recovering system and user data of a home server by allowing a user to press a recovery button when the home server cannot be recovered from a fault state due to a functional error of the home server configured in the home network system. Initial system data of the home server, controlling and managing a home network connected to a plurality of home appliances, is automatically stored in an internal database as backup data. Data updated in the home server is periodically transmitted to a portal server connected to the home server through the Internet. Therefore, data, damaged due to a functional error of the home server, can be automatically recovered by using the backup data stored in the portal server. Maintenance and management of the home server can be conveniently and cost-effectively achieved and stability of the home network system can be ensured.