Abstract: A method and apparatus for synchronizing EPG information between a server and a client in a digital broadcasting network are provided. The server updates synchronization files according to information which is modified after a last synchronization file is created according to the update of the server-side EPG information, creates a synchronization file according to information which is modified after the last synchronization file is created, and transfers a synchronization file to one of the clients, where the synchronization file is created first after the EPG information pieces of the clients are updated among from the synchronization files stored in the clients. Accordingly, the server and the client can be easily synchronized with each other by transferring or receiving only one file, since all synchronization files can include the latest update history by transferring only one synchronization file.

Abstract: A system and method of checking the integrity of content and metadata are provided. The integrity-checking method includes storing changed content in a first storage space, and storing the metadata corresponding to the changed content in a second storage space.

Abstract: A method and apparatus for browsing a plurality of broadcast programs are provided. The method includes classifying a plurality of broadcast programs into one or more broadcast program groups with reference to electronic program guide (EPG) information or viewing records of a user regarding the broadcast programs, one-dimensionally arranging the broadcast programs so that the broadcast program groups are one-dimensionally arranged, displaying the broadcast programs and the broadcast program groups on a screen as a graphic image, and allowing the user to change a rule used for forming the broadcast program groups. Accordingly, it is possible to enable a user to effectively browse broadcast programs and to provide the user with a user interface customized for the user by using a simple one-dimensional input method and intuitively utilizing EPG information.

Abstract: An apparatus and method for browsing contents, the apparatus including: a generation module to generate a key value using metadata of contents as an input value; a management module to manage an index for accessing the key value; and an output module to output a user interface (UI) required to browse the contents using the key value included in a leaf node of the index.

Abstract: An apparatus and method to search content in a multimedia device, and more particularly, an apparatus and method to efficiently search content in a multimedia device using various metadata of the content, the apparatus including: a content storage unit to store content; a metadata storage unit to store metadata of the stored content; a user input unit to receive an input of a current arrangement standard, from one or more arrangement standards corresponding to the metadata, from a user; a content arrangement unit to arrange the stored content according to the current arrangement standard; and a user interface provision unit to provide a user interface that displays the arranged content.

Abstract: A user interface for browsing content, a method of providing a user interface, and a content-browsing apparatus are provided. The method includes dividing a plurality of content into a number of content groups according to a clustering condition, and providing a user interface including a cell field that has a group cell having a subcell corresponding to content included in a content group determined by the clustering condition, the group cell corresponding to the content group, a selector that indicates the subcell, and preview information for the content corresponding to the subcell indicated by the selector.

Abstract: A method of browsing contents and an apparatus for browsing the same are provided. The method includes providing a plurality of characteristic vector types and a plurality of characteristic value types that correspond to a reference characteristic vector type selected from the plurality of characteristic vector types, and determining an arrangement order of preview information of contents according to a reference characteristic value type that is selected from the plurality of characteristic value types, and providing the preview information in the arrangement order.

Abstract: An apparatus and a method for managing a storage space through time-variant consumption estimation. More particularly, an apparatus and a method for managing a storage space through time-variant consumption estimation that estimates consumption of an entire storage space when a user instructs program editing, program recording or reserved recording, and so on. When there is a possibility that the estimated consumption exceeds a predetermined value, immediately providing a user with information indicating that the storage space is lacking. The apparatus includes a storage unit storing contents in the storage space, a consumption estimation unit estimating time-variant consumption of the storage space, a contents management unit deleting at least a portion of the contents or storing at least a portion of additionally input contents according to the estimation result, and an output unit outputting the deletion or storage result.

Abstract: A method and apparatus for synchronizing EPG information between a server and a client in a digital broadcasting network are provided. The server updates synchronization files according to information which is modified after a last synchronization file is created according to the update of the server-side EPG information, creates a synchronization file according to information which is modified after the last synchronization file is created, and transfers a synchronization file to one of the clients, where the synchronization file is created first after the EPG information pieces of the clients are updated among from the synchronization files stored in the clients. Accordingly, the server and the client can be easily synchronized with each other by transferring or receiving only one file, since all synchronization files can include the latest update history by transferring only one synchronization file.