David S Touretzky

55659098, Oct 15, 1996

Feb 3, 1994

8/191675

Robert Thibadeau - Pittsburgh PA
Joseph M. Newcomer - Pittsburgh PA
David Touretzky - Pittsburgh PA

Television Computer, Inc. - Pittsburgh PA

H04N 716

348 9

Location specific messages or programming are generally broadcast and selectively filtered by user terminals which have encoded one or more arbitrary locations of interest. The area surrounding a user, a remote location, a route to be travelled, or the like may be selected for receipt of local warnings, local commercial messages, and the like. A set-top receiver being a preferably tunable apparatus capable of receiving digital information transmitted by a variety of means. Transmitted messages contain information targeted to geographical groups of users, with location designation coding accompanying location-specific messages. A geographic location selection code is entered into a data processor coupled to the user's receiver to define the user's selected location(s) of interest. The processor receives the information segment and its designation code and compares the designated location to the selected one. Segments where the designated and selected points or areas overlap are processed. e. g.

54325420, Jul 11, 1995

Aug 31, 1992

7/937641

Robert Thibadeau - Pittsburgh PA
Joseph M. Newcomer - Pittsburgh PA
David Touretzky - Pittsburgh PA

Television Computer, Inc. - Pittsburgh PA

H04N 716

348 6

Location specific messages or programming are generally broadcast and selectively filtered by user terminals which have encoded one or more arbitrary locations of interest. The area surrounding a user, a remote location, a route to be travelled or the like may be selected for receipt of local warnings, local commercial messages and the like. Transmitted messages contain information targeted to geographical groups of users, with location designation coding accompanying location-specific messages. A geographic location selection code is entered into a data processor coupled to the user's receiver to define the user's selected location(s) of interest. The processor receives the information segment and its designation code and compares the designated location to the selected one. Segments where the designated and selected points or areas overlap are processed, e. g. , being displayed, stored or used to trigger a warning.