Abstract: Information on an electronic document including location information on related data is expanded. In the present invention, the location information on the data included in an input electronic document is extracted from the electronic document, external data which can be added to the electronic document is acquired based on the extracted location information, and information on an element which the input electronic document is short of is expanded from the acquired external data.

Abstract: A document processing device for processing a set having, as elements, a plurality of documents including character information includes a theme information generating unit for extracting the commonality of the character information of the respective documents in the set to generate theme information which is a document expressing common semantic contents being common in the entire set. In this document processing device, the theme information generating unit executes a predetermined generating procedure on the basis of the plurality of documents in the set to generate the theme information as a new document, or the theme information generating unit selects documents having a commonality in character information in advance to constitute the set, selects one document from the plurality of documents in the set depending on a predetermined selecting procedure, and sets the selected document as the theme information to generate the theme information.

Abstract: This invention provides a system and method for distributing digital content capable of preventing illegal use of digital content and leak of user information. More specifically, this invention provides a system and method for distributing digital content comprising steps in which a creator terminal 110 forwards content, copyright information and conditions for quotation to a content distribution server 120 (step S101 and S103), a step in which an user terminal 130 forwards an application for using the content to the content distribution server 120 (S109), a step in which the content distribution server 120 embeds the copyright information in the content to which the user terminal 130 has forwarded the application for using the content (S110) and a step in which the user information is embedded in the content to which the user terminal 130 has forwarded the application for using the content (S111).

Abstract: This invention provides a method and a system for selling content capable of ensuring a fair profit of a copyrighter of a creation in content. More specifically, this invention provides a method and a system for selling content for judging whether an user terminal has purchase information of each creation in content including one or two creations or more or not and for calculating forwarding charge of the content based on whether the user terminal has purchase information of each creation in the content or not, in forwarding the content to the user terminal. The method and system for selling content enable to circulate the creation itself in the content as the object of dealing and to gain profit directly from the user of content. Therefore, the copyrighter can gain the fair profit without being influenced by the achievement of the content including the creation. This is also to encourage the creative urge of the creator and to improve the creative level of the creator.

Abstract: A document display system displays the contents of an electronic document. If the user requests dictionary access, the electronic document is modified by attaching invisible dictionary access information to words in the document. The modified document is then displayed, the words to which the dictionary access information is attached being visibly marked. If the user selects a word to which dictionary access information is attached, an electronic dictionary entry for the word is automatically retrieved and displayed.