An index structure of metadata provided for searching for information on contents and a method for providing indices of the metadata, and a method and an apparatus for searching for the metadata using the index structure of the metadata are provided, in which the index structure of the metadata includes...http://www.google.de/patents/US20040139091?utm_source=gb-gplus-sharePatent US20040139091 - Index structure of metadata, method for providing indices of metadata, and metadata searching method and apparatus using the indices of metadata
