1. An information processing apparatus for managing entered document image data, comprising: structure analyzing means for analyzing structure of the entered document image data; character recognition means for recognizing a character string in a text block that has been analyzed by said structure analyzing means; language analyzing means for applying language analysis to results of character recognition performed by said character recognition means; extraction means for extracting synonyms and equivalents of words obtained as results of language analysis performed by the language analyzing means; conversion means for converting a word obtained as the result of language analysis to a word in another language; translation means for translating a character string in a text block that has been analyzed by said structure analyzing means to another language; and storage means for storing at least results of analysis by said structure analyzing means, results of character recognition by said character recognition means and results of language analysis by said language analyzing means, and for storing at least one of the results of extraction by said extraction means, results of conversion by said conversion means and results of translation by said translation means in association with the results of character recognition.