Systems, devices and methods are provided for integrating GPS receiver technology into a PDA. The systems, devices and methods of the present invention integrate GPS capabilities with PDA functions, and in particular integrate a PDA address book function with an electronic map and GPS capabilities. One...http://www.google.com.hk/patents/US7043362?utm_source=gb-gplus-share專利 US7043362 - PDA with integrated address book and electronic map waypoints
