A printer is provided which has a special Emulation Manager function as well as a "code sniffer" function, in which print data received is sent to a code sniffer buffer. A code sniffer function automatically determines the type of emulator that should be called to perform the interpretation or rendering...http://www.google.com.tw/patents/US6647437?utm_source=gb-gplus-share專利 US6647437 - Method for automatically detecting and processing binary postscript print jobs
