Patent Document ID: 8166073
Application ID: 11667815

Base Claim:
1. An information processing apparatus comprising: a processor; and a storage means, wherein said storage means stores description information describing multimedia contents described in a tree structure including a plurality of nodes at a first level corresponding to a plurality of multimedia scenes divided in a time series, and a plurality of nodes at a second level each corresponding to one of said plurality of nodes at the first level for describing an item, each of said plurality of nodes at the second level including a keyword that is an entity of said item, said processor is operative to read out description information describing details of said multimedia contents from said storage means, said processor including description information conversion means (i) for determining an overlapping keyword among keywords included in said plurality of nodes at the second level included in said description information, (ii) for adding ID information to at least one of the nodes at the second level corresponding to the overlapping keyword identified by the determination at a relatively earlier position in said time series, said ID information representing said keyword, and (iii) for replacing each of the nodes at the second level corresponding to the overlapping keyword at a relatively later position in said time series with respect to the node to which the ID information was added, with a reference node directed to identifying said ID information, and said storage means stores description information subjected to replacement, output from said description information conversion means.

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Claim 10:
10. The information processing apparatus according to claim 1 , wherein said description information is represented by a tree structure including a plurality of leaves bearing the same keyword; each of said plurality of leaves corresponds to an end of said tree structure, and said information processing apparatus further comprises: a description information conversion means for assigning said keyword and ID information representing said keyword to at least one of said plurality of leaves, and assigning reference information corresponding to said ID information to the other leaves, and said storage means stores the converted description information provided from said description information conversion means.