14. The method for document format conversion according to claim 13 , wherein the step of generating font files further comprises: generating the font files using the recognized Unicode values and a corresponding path groups.
14. The method for document format conversion according to claim 13 , wherein the step of generating font files further comprises: generating the font files using the recognized Unicode values and a corresponding path groups. 15. The method for document format conversion according to claim 14 , wherein the step of generating the font files using the recognized Unicode values and the corresponding path groups further comprises: generating a first table using Unicode values, in which mappings between the Unicode values and font indexes are stored; generating a second table using path primitives contained in the path groups, in which the font indexes and font data corresponding to the font indexes are stored; and generating the font files using the first table and the second table.