1
David E Wachob: Method and apparatus for providing demographically targeted television commercials. General Instrument Corporation, Barry R Lipsitz, October 13, 1992: US05155591 (797 worldwide citation)

Different commercial messages are broadcast to different demographically targeted audiences in a cable television system or the like. A first television channel contains television programs and periodic commercial messages. A second television channel contains alternate commercial messages. Demograp ...


2
Wachob David E: Method and apparatus for providing demographically targeted television commercials.. Gen Instrument, May 2, 1991: EP0424648-A2 (208 worldwide citation)

Different commercial messages are broadcast to different demographically targeted audiences in a cable television system or the like. A first television channel contains television programs and periodic commercial messages. A second television channel contains alternate commercial messages. Demograp ...


3
Wachob David E: Methode et appareil de diffusion demographique dannonces de television, Method and apparatus for providing demographically targeted television commercials. General Instrument Corporation, General Instrument Corporation, RIDOUT & MAYBEE, January 2, 2001: CA2024868

Different commercial messages are broadcast todifferent demographically targeted audiences in acable television system or the like. A firsttelevision channel contains television programs andperiodic commercial messages. A second televisionchannel contains alternate commercial messages. Demographic c ...