A user interface extension allows data entry into a marking machine user interface field from an electronic device, such as a PDA, attached to the marking machine via compatible communications ports. The marking machine includes a UI field into which data must be entered, the user lets the machine know...http://www.google.com.tw/patents/US7526727?utm_source=gb-gplus-share專利 US7526727 - Marking machine user interface supplementation via added, attached portable electronic device
