28. The string matching system of claim 27 further comprising an input string extraction unit which receives multimedia data including the input string and extracts the input string from the multimedia data.
28. The string matching system of claim 27 further comprising an input string extraction unit which receives multimedia data including the input string and extracts the input string from the multimedia data. 29. The string matching system of claim 28 , wherein the representative string determination unit replaces the input string in the multimedia data with the output representative string.