Samsung Electronics Co., Ltd.

Hyo-seop Shin

Hye-Soo Lee

Dong-Ho Lee

Yun-ho Choi

Yun-sang Kim

In-Sun Kang

Yang-Iim Choi

Jae-hoon Cho

Gil-more Koo

Andrei Vladimirovich Popov

Yeong-kyeong Seong

In-Sun 2703 Lotte Gwanak Tower Kang

Jae-Hoon 304 Millenniumville Cho

Gil-More 106-803 Dongbu Centreville Koo

A method and apparatus for managing data written in a markup language so as to allow efficient storage, deletion, updating and retrieval of the digital data and a recording medium for storing a program designed to perform the same method. To allow efficient storage, deletion, updating and retrieval of digital data, data written in a markup language is split into fragments and each fragment is managed in a predetermined relational table. An index for the digital data based on the fragment allows the fragmented digital data to be efficiently accessible.

Method and apparatus for managing data written in markup language and computer-readable recording medium for recording a program

A method of encrypting metadata that can be represented by a tree structure. The method involves generating an encryption key for a predetermined node of the metadata using a function that takes as input parameters an encryption key for an upper node of the predetermined node and information specifying the predetermined node, and encrypting data of the predetermined node using the generated encryption key.

Method for encrypting and decrypting metadata

A transcoding system and method effectively synchronize segmentation metadata with A/V content when converting an MPEG stream to another format stream using a segment browser. The transcoding system includes a timing synchronizer, which adjusts the timing parameters so that the video data can be synchronized with segmentation metadata even after the transcoding process, a transcoding condition determiner, which determines transcoding conditions suitable for an end user environment, and an encoder, which compresses a video sequence reconstructed from the video data according to the transcoding conditions determined by the transcoding condition determiner and records a presentation time stamp, which is one of the adjusted timing parameters, in the compressed video sequence.

Transcoding system and method for maintaining timing parameters before and after performing transcoding process

Provided are a method and system for recommending content. The method and system enable a user to be given recommendations of contents similar to what he/she likes. The method for recommending content includes creating a user profile according to a predetermined model based on a user's reaction to the content, obtaining content features from one or more data sources, and creating a list of recommended contents according to a predetermined process based on the user profile and the content features. The system for recommending content includes a user profiling module that creates user profiles according to a predetermined model based on a user's reaction to the content, a digital television module that obtains content metadata from one or more data sources, and a content rating module that creates a list of recommended contents based on the user profile and the content metadata received from the user profiling module and the digital television module. The user can be given recommendations of contents similar to what he/she likes.

Method and system for recommending content

A system and method for time synchronization between multimedia content and segment metadata. Time synchronization system of the present invention includes a content processor receiving and storing multimedia content containing first segment time information; a metadata processor receiving and storing segment metadata for the content containing second segment time information; a synchronizer extracting the first segment time information from the multimedia content and the second segment time information from the metadata in response to a request of a user, determining respective reference time points from the first and second extracted segment time information, correcting a relative time point of the content using a difference between the determined reference time points, and synchronizing the received content and metadata using the corrected relative time point; and a content segment browser forwarding the content segment request signal to the synchronizer and reproducing a plurality of segments of the content synchronized by the synchronizer.

System and method for time synchronization between multimedia content and segment metadata

Provided is a path index lookup method, i.e., an extended markup language (XML) indexing method by which a relational database can stably process a query regardless of how a user defines the query. In the path index lookup method, a regular path expression with a certain length can be processed through a single joining operation using a PathLookup table and an ExtendedEdge table. Thus, a regular path expression query, which is a core type of XML user query, can be stably and quickly processed regardless of how a user describes the query.

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Seoul, South Korea

Hyo-seop Shin