A method, apparatus, and computer-readable media comprise receiving a broadcast digital television signal comprising data relevant to one or more particular locations; generating a pseudorange based on the broadcast digital television signal; and determining location of an apparatus based on the pseudorange...http://www.google.fr/patents/US6970132?utm_source=gb-gplus-shareBrevet US6970132 - Targeted data transmission and location services using digital television signaling
Targeted data transmission and location services using digital television ...
