Patent ID: 7240282

Claim:
A related contents synchronization and presentation system stored in a computer readable medium, comprising: a site specifying portion that receives an identifier of a base site as a Web site that becomes the basis of the displayed presentation and specifies this base site and receives an identifier of a compared site as a Web site displayed in a language different from that of the base site and specifies the compared site; a base page specifying portion that specifies a base page as a Web page from the base site shown on a display screen; a language converting portion that has a function of consolidating languages of words included in each site into a single language; an aggregated word information producing portion that has a function to produce aggregated word information as information based on words included in a Web page or a paragraph and derived through the language converting portion in a manner that enables comparison with other aggregated word information, wherein the aggregated word information is handled as a data structure comprising one or multiple sets for each subject word, that is a word wherein a value obtained by multiplying the frequency of the appearance of the word by a weighting coefficient pertaining to its part of speech is over a predetermined threshold value and a single content word or group of content words whose degree of cooccurrence with the subject word exceeds a predetermined threshold value, wherein the content word(s) group correlates with the subject word; a related page specifying portion that specifies one or multiple related pages similar to the base page from among each of the compared pages based on a comparison between the aggregated word information of the base page and the aggregated word information of each compared page as a Web page in the compared site by comparing aggregated subject words appearing in both the base and related page, and comparing aggregated content words that also appear in both the base and related page, wherein the related page specifying portion considers a paragraph whose subject words are similar by not less than a predetermined degree and whose content words are similar by not less than a predetermined degree as being a globally related paragraph, a paragraph whose subject word alone is similar by not less than the predetermined degree as being a content different paragraph, and a paragraph whose content word alone is similar by not less than the predetermined degree as being a subject different paragraph, by comparison with the aggregated word information of the base page; and a display controlling portion that presents the related page together with the base page on the same display screen, wherein the display controlling portion further has a function of displaying the globally related paragraph, the content different paragraph and the subject different paragraph in a visually and thereby easily recognizable manner.