A first file is received in a first format. The first format is determined. A converter is selected based on the first format. Using the converter, the first file is translated to at least one second file. The second file has a second format....http://www.google.com.tw/patents/US7810025?utm_source=gb-gplus-share專利 US7810025 - File translation methods, systems, and apparatuses for extended commerce
