Abstract: A channel-changing method is disclosed. The method includes receiving broadcast signals consisting of multiple packets, extracting frames using packet-identification information on the packets, and storing the extracted frames by channels, and outputting frames corresponding to the channel requested by a user among the stored frame.

Abstract: A data transmitting method of simultaneously reproducing a plurality of moving picture contents includes: encoding a plurality of moving picture contents into a single moving picture content; and transmitting the encoded moving picture content. The data transmitting method further includes receiving play list information for specifying the plurality of moving pictures contents that are to be simultaneously reproduced before the decoding, wherein, in the encoding, the plurality of moving picture contents specified by the received play list information are encoded into a single moving picture content.

Abstract: A method of blocking spam data is provided. The method includes: receiving a digital content file and key data, in which a key, including information for identifying a transmitter, and an electronic signature for the key are inserted as a watermark; and based on the key and the electronic signature for the key inserted in the received key data, selectively blocking the digital content file received with the key data.

Abstract: Provided is a method of initializing multiple devices using a job scheduler. The method includes determining whether the devices to be initialized satisfy requirements for initialization, performing an initialization job on a device that has satisfied the requirements for initialization, determining whether another device that has satisfied the requirements for initialization exists, and performing the above-described steps until the initialization of all other devices has finished.

Abstract: The present invention provides to a system and method of sharing contents using a messenger program, The system includes a device server which registers Consumer electronic (CE) devices of the same user and CE devices of different users, and generates a messenger account; a messenger server which registers the generated messenger account; and a buddy setting module which sets a buddy relationship among the CE devices of the same user and a buddy relationship among the CE devices of different users, such that contents are shared by the CE devices having the buddy relationship.

Abstract: A method, apparatus, and system for intermediating contents service. The method includes changing at least part of contents to produce a plurality of pieces of changed key data which are different from each other; and managing trading of the contents between a first and a second device using the produced plurality of pieces of changed key data. The apparatus includes a contents publishing unit which changes at least part of contents, produces a plurality of pieces of changed key data which are different from each other, and stores information on the plurality of pieces of changed key data in a storage unit; and a trade managing unit which manages trading of the contents between a first device and a second device using the stored information on the plurality of pieces of changed key data. The system includes a contents service intermediating server, and first and second devices for trading contents.

Abstract: An apparatus for controlling devices in one or more home networks is provided. The apparatus includes an authentication unit, a control message generation unit, a control message transmission unit, a response message reception unit, and an information management unit. The authentication unit performs authentication with one or more relay devices each connected to a plurality of devices through a network. The control message generation unit generates a control message in response to a user input. The control message transmission unit transmits the generated control message to a device selected by the user from among the plurality of devices. The response message reception unit receives a response message responding to the transmitted control message. The information management unit manages information about the relay devices and the plurality of devices.

Abstract: The present invention relates to a device and method for managing multimedia content in a portable digital apparatus. An object of the present invention is to enable management of multimedia content to be stored in a portable digital apparatus equipped with a camera based on a user's preference by configuring an index for predetermined multimedia content stored in the portable digital apparatus. To this end, a device for managing multimedia content in a portable digital apparatus, comprising a storing unit for storing a plurality of multimedia content; an input unit for receiving index information from a user so that the multimedia content are classified; and a control unit for producing index information for the multimedia content with the configured indexes. The present invention provides a method for managing multimedia content by grouping the multimedia content according to his/her preference and storing them, thereby providing quick, convenient searches for the desired multimedia content.

Abstract: A method and apparatus for creating a LastURI (uniform resource identifier) of a content asset in order to share the content asset based on a multiphoto video (MPV) file in content recorders and/or reproducers having different file systems, and a recording medium storing program for executing the method are provided. The method creates one of an absolute LastURI and a relative LastURI as the LastURI of the content asset according to protocol type information, so that content recorders and/or reproducers using different file systems can easily find and share the content asset based on the MPV file.

Abstract: Provided are a method and apparatus for easily and quickly searching for a specific element (or a node) in a document or a library complying with an XML format by using tree path information based on a predetermined syntax, and a recording medium having a program to implement the method. The method includes: parsing tree path information based on a predetermined syntax if tree path information of an element is input; and searching a document or library for the element according to the parsing result.

Abstract: Provided are a method and apparatus for storing multimedia data in a nonvolatile storage device in units of blocks, in which the time required for storing the multimedia data in the nonvolatile storage device can be reduced. The method includes receiving the multimedia data, sequentially storing the received multimedia data in a block in which all pages are empty among blocks included in a nonvolatile memory, and searching in the nonvolatile memory for a fragmented block in which some pages are occupied by data and moving the pages of the fragmented block that are occupied by data to another block.

Abstract: A method and apparatus for synchronizing metadata of different assets referencing the same contents, using a backward-link information file of an asset when metadata of the asset is edited, the method including: editing a metadata of a first asset; detecting a second asset referencing the same content as the first asset using a backward-link information file of content which the first asset refers to; and synchronizing metadata of the second asset with the edited metadata of the first asset. Therefore, it is possible to easily synchronize metadata of assets in a plurality of MPV files referencing the same content.

Abstract: Provided are a method and apparatus for moving a multi-media file using a Universal Unique IDentifier (UUID) of a capture device, and a storage medium storing a program for executing the multi-media file moving method. The multi-media file moving method includes the operations of receiving unique identifier information about the device from the device, checking whether a directory having a name based on the unique identifier information exists in the storage device, generating the directory based on the unique identifier information if the directory does not exist in the storage device, and storing the multi-media file received from the device in the directory. Accordingly, a media file a user desires can be easily searched.

Abstract: A method of determining a filename of a digital content file generated by a CE product in accordance with a PSFS standard and an apparatus for generating a digital content file are provided. The method of determining a filename of a digital content file includes generating a first character string identifying an apparatus for generating the digital content file, generating a second character string representing a storing order of the digital content file, and determining the filename of the digital content file based on the first and second character strings. Furthermore, the second character string of the digital content file is generated by increasing character code of the second character string of a last-stored digital content file by a predetermined value. Accordingly, it is possible to overcome the limitation on the maximum number of files stored in one directory of the conventional method.

Abstract: A method for managing multimedia data includes: (a) allowing a user to access a multimedia object including at least one multimedia data file; (b) checking a reference relation of the multimedia data file when the multimedia object is deleted; and (c) deleting the multimedia data file when the multimedia data file is referenced only by the multimedia object, or maintaining the multimedia data file when the multimedia file is referred to by another object as well as the multimedia object.

Abstract: An extensible markup language (XML) processor having a function for filtering a tree path for an XML based document so that a tree structure can be built by using necessary elements among elements included in the XML based document, a tree path filtering method and a recording medium storing a program to implement the method are provided. The method includes: detecting a tree path satisfying a predetermined tree path policy from a document; and building a tree structure corresponding to the document by using the detected tree path.

Abstract: A cyclic referencing management method and apparatus, a parsing method and apparatus, and a computer readable recording medium storing a program to implement the methods are provided. The method for managing cyclic referencing that may occur by mutual references of assets in a file provided to control assets in a multimedia application environment, includes: detecting an asset generating cyclic referencing; and ignoring the asset generating cycling referencing. According to the methods and apparatuses, cyclic referencing that can occur in a file to control assets can be detected and processed such that the system can be prevented from entering an indefinite loop or causing an erroneous operation.

Abstract: Provided is a method of initializing multiple devices using a job scheduler. The method includes determining whether the devices to be initialized satisfy requirements for initialization, performing an initialization job on a device that has satisfied the requirements for initialization, determining whether another device that has satisfied the requirements for initialization exists, and performing the above-described steps until the initialization of all other devices has finished.