Method of identifying set-top receivers

摘要: Location specific messages or programming are generally broadcast and selectively filtered by user terminals which have encoded one more arbitrary locations of interest. The area surrounding a user, remote location, route to be travelled, the like may selected for receipt local warnings, commercial messages, like. A set-top receiver being preferably tunable apparatus capable receiving digital information transmitted variety means. Transmitted contain targeted geographical groups users, with location designation coding accompanying location-specific messages. geographic selection code is entered into data processor coupled user's define location(s) receives segment its compares designated one. Segments where points areas overlap processed. e.g., displayed, stored used trigger warning. variable plural can prioritized. Preferably, regions their boundaries, in longitude, latitude, altitude like, absolute relative coordinates, shorthand designations refer definitions areas. Filtering segments based on message content, prioritizing additional features included. system especially useful distributing hazard