Abstract: A method of processing an action executes an action requested by a control point for controlling a controlled device through a network, stores a result of executing the action as a pending result of the action when a network connection between the controlled device and the control point is terminated, and transmits the stored pending result of the action to the control point when the network connection between the controlled device and the control point is resumed.

Abstract: A method and apparatus for preventing duplicate saving of a resource between universal plug and play (UPnP) devices, which provide content directory service during content synchronization, are provided. The method includes receiving a change log including metadata about a changed resource from a UPnP device of a transmitter, determining whether the changed resource is a duplicate based on the received change log, and receiving and saving the changed resource according to a designated saving path based on a result of the determination.

Abstract: A method of effectively managing information shared by synchronizing between a plurality of Universal Plug and Play (UPnP) devices is provided. According to the method, all devices exchange version information of the devices at initial synchronization, and when shared information stored in some of the devices is changed, a device changing shared information transmits new version information to the other devices via an event message, so that all of the devices can maintain the latest shared information. Also, by having a counter indicating an update state of respective parts of shared information, when shared information is changed by a plurality of the UPnP devices, it is easy to recognize which part from among the respective parts of the shared information is the latest.

Abstract: Provided is a method of synchronizing content directory service (CDS) objects of a universal plug and play (UPnP) media servers. The UPnP media servers manage information on synchronization objects and synchronization policy information, which reduces the role of a control point (CP) in performing synchronization, so that the synchronization speed is increased.

Abstract: The present invention provides an apparatus and method for matching protocols of embedded audio/video (AV) contents. The apparatus includes a remote user interface (RUI) server which receives uniform resource identifier (URI) information of AV contents embedded in user interface (UI) data and protocol information of the AV contents; an RUI client which receives the UI data, which was created using the URI information and the protocol information, from the RUI server; and an AV control point (CP) which receives the protocol information and a control request command for the AV contents from the RUI client, matches protocol information obtained from a media renderer with the protocol information received from the RUI client, and performs a control operation on the AV contents.

Abstract: Provided are a method and apparatus for managing a station by providing an encrypted key to the station in a wireless network under a Wi-Fi Protected Pre-Shared Key (WPA-PSK) environment. In the method, a registrar determines whether a new station is a guest station, based on user input. If the new station is a guest station, the registrar includes a session key (and not a shared key) into an M8 message according to a Wi-Fi Alliance (WFA) Simple Config protocol and transmits the M8 message to the station. Accordingly, it is possible to permit a guest station to temporarily access the network without a user's management of information regarding the guest station.

Abstract: A method and apparatus for synchronizing a content directory service (CDSs) of a Universal Plug and Play (UPnP) device. In the method, a CDS, whose content is modified, generates an event message containing information of the modification of the content, and multicasts the event message to a UPnP network. Other CDSs that receive the event message update their content based on the event message. Accordingly, a control point is not required to initiate and does not intervene in a process of synchronizing a plurality of CDSs, thereby reducing load on a memory or a central processing unit (CPU) of the control point, compared to conventional UPnP synchronization of devices. Further, an action of a CDS need not be repeatedly called, thereby reducing network traffic.

Abstract: An apparatus and method for controlling a dispersion recording and playback of a moving picture are provided. The apparatus which controls a dispersion record of a moving picture includes, a recording unit that generates a record schedule when a predetermined moving picture is reserved-recorded, generates a reserved-recording-object when it is a reserved-recording time, and dispersedly records the moving picture in another storage device if an error occurs due to insufficient storage space when the moving picture is recorded; a recording-device-selecting unit that selects a recording device based on the preferences of storage devices before the moving picture is reserved-recorded, and a CDS-managing unit that manages recording information of the recorded moving picture, information of moving picture that has been recorded and the recording device.

Abstract: Provided is a method for synchronizing contents included in devices in a Universal Plug and Play (UPnP) network. A control point device, which contains local content but cannot provide a content directory service, converts information regarding content objects of the control point device into Digital Item Description Language Lite (DIDL-Lite) format, and manages a mapping table, thereby performing synchronization with a device such as a UPnP media server providing a content directory service, without loading a separate protocol stack.

Abstract: Provided are an apparatus and method for setting a user interface according to user preferences, more particularly, an apparatus and method for setting the user interface according to the user preferences, in which the user interface can be set up by reflecting the user preferences, and the set user interface is synchronized in order to be used in other devices. The apparatus includes a user-interface-configuration unit that is notified of an update and rearrangement of a predetermined user interface element by a user, a user-information-management unit that manages security information of the user that reconfigures the user interface element, and a user-interface-tree-management unit that reconfigures a predetermined user-interface tree based on the reconfigured user-interface element.

Abstract: A method of synchronizing a plurality of content-directory service (CDS) devices is provided. The method includes retrieving and discovering N CDS devices in a home network by a control point (CP), transmitting a StartSync message that requests the start of synchronization to a certain CDS device of the N CDS devices by the CP, forwarding a StartPeerSync message that informs remaining N-1 CDS devices of the fact that synchronization will be started by the CDS device that has received the StartSync message, and synchronizing each of the N CDS devices with the remaining N-1 CDS devices, in a home network that includes N CDS devices that provide metadata of multimedia content existing in the home network, and the CP that receives metadata from the N CDS devices and requests the media renderer to replay the multimedia data.

Abstract: An apparatus, system and method for executing discovery in a network are provided. The system for executing discovery in a network is configured with a SyncML server and a SyncML client, and includes a SyncML server that transmits a multicast search message to the SyncML client in order to search for a SyncML client that exists in a network, and executes a data synchronization with the found SyncML client, and a SyncML client that transmits a notify-alive message to the SyncML server in order to notify that the SyncML client exists in a network, and executes a synchronization with the SyncML server.

Abstract: A method and apparatus for synchronizing contents of devices in a home network are provided. The apparatus includes a determination unit which determines whether a first device and a second device support a common synchronization protocol. A synchronization request unit then requests at least one device to synchronize the contents using the common synchronization protocol determined by the determination unit.

Abstract: Provided is a method and system for synchronizing a plurality of content directory service (CDS) devices in a home network environment. The method of synchronizing the plurality of CDS devices of a home network, which includes the plurality of CDS devices and a control point (CP), comprises (a) requesting a first CDS device among the plurality of CDS devices to start synchronization using the CP; (b) performing the synchronization with a second CDS device among the plurality of CDS devices using the first CDS device; (c) selecting a third CDS device from the plurality of CDS devices and requesting the third CDS device to start synchronization with the first CDS device or the second CDS device using the CP; and (d) performing the synchronization with the first CDS device or the second CDS device using the third CDS device.

Abstract: An apparatus and method are provided for allowing UPnP devices to exchange power mode information with one another in a unified home network. The method of relaying a message in a unified network including at least first and second networks, the method includes receiving information regarding a power mode of a communication device connected to the first network from the communication device, generating a message indicating the power mode of the communication device based on the received information, and transmitting the message to the second network so that communication devices connected to the second network recognize the power mode of the communication device connected to the first network. Accordingly, even if a UPnP device in the power save mode cannot receive or transmit messages, another UPnP device can determine whether the UPnP device is connected to a network.

Abstract: An apparatus for providing a security service includes a key generation unit which generates a pair of keys including a first temporary public key and a first temporary private key for a network device that will be connected with a network form the outside, a temporary access control list generation unit which generates a first temporary access control list including the first temporary public key for an internal network device, an authentication unit which performs authentication when the network device joins in the network, and a first transmission/reception unit which transmits the pair of keys including the first temporary public key and the first temporary private key to the network device according to the authentication result.

Abstract: A system and method for establishing a secured connection between home network devices are provided. Particularly, a system and method for establishing a secured connection between a home network including a plurality of non-secured Universal Plug and Play (UPnP) devices and a secured external UPnP device by creating virtual UPnP devices for the respective corresponding non-secured UPnP devices are provided. The system for establishing a secured connection between home network devices includes a virtual UPnP device creation unit which creates a secured virtual UPnP device for a non-secured UPnP device, an information storage unit which stores correspondence information regarding the non-secured UPnP device and the virtual UPnP device, and a secured communication unit which securely communicates with a secured UPnP device with reference to the correspondence information.

Abstract: A method and system for quickly selecting a device desired by a user from among a plurality of devices on a home network and playing content included in a portable device using the selected device are provided. The method includes displaying a device list of the plurality of content player devices based on the received descriptions, receiving selection of an item on the device list from a user, sending a device notification request message to a content player device corresponding to the selected item, and executing device notification using the content player device that has received the device notification request message.

Abstract: An apparatus and method for sharing services on a network wherein a role is decided for sharing services so that the services can be shared between OSGi service platforms of devices operating on a desired network using a desired election algorithm. The apparatus for sharing the services on the network includes a service role configuration unit for deciding a service role to share a desired core service through the election algorithm when connected to the desired network; and a service request processing unit for processing and requesting the core service requested to support a desired service from the OSGi service platform of a device assigned externally, according to the service role decided by the service role configuration unit.

Abstract: A method and apparatus for sharing services on a network. The method includes the steps of A) at a first embedded device, transmitting a message requesting at least one service, to at least one embedded device connected with the first embedded device over the network, B) at the first embedded device, receiving code information for implementing the service from the embedded device receiving the message, C) at the first embedded device, executing the code information and implementing the service, and D) at the first embedded device, registering service information on the service when implementation of the service is completed in the step C.