A system for displaying commercial advertising to a mobile unit via a wireless data communication with a global computer network, such as the Internet, based on GPS position data is disclosed. The system distributes location-relevant advertising content over a data network to a client based on a GPS...http://www.google.com.tw/patents/US20050221843?utm_source=gb-gplus-share專利 US20050221843 - Distribution of location specific advertising information via wireless communication network
