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Information storage device for storing description information of multimedia content in the form of tree structure wherein the description information is generated using a keyword and ID information representative of the keyword as new leaves of the tree structure
Information storage device for storing description information of multimedia content in the form of tree structure wherein the description information is generated using a keyword and ID information representative of the keyword as new leaves of the tree structure
There are provided a storage device and a computer-readable medium capable of efficiently storing keywords contained in description information and efficiently retrieving the keyword. A list producing portion (6) extracts the keywords from the description information and produces a keyword list correlating the keywords with the scene information containing the keywords. A description information converter (8) converts the keywords contained in the keyword list received from the list producing portion (6) among the keywords contained in the externally received description information into reference information for specifying the keywords in the keyword list received from the list producing portion (6). A storage (10) stores the converted description information provided from the description information converter (8) and the keyword list provided from the list producing portion (6).
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