Television – Two-way video and voice communication – User positioning
Patent
1994-01-19
1997-01-14
Harvey, David E.
Television
Two-way video and voice communication
User positioning
348460, 348473, 348552, 235383, 235375, H04N 708
Patent
active
055944930
ABSTRACT:
A smart card is disclosed which includes an optical receiver for receiving promotion data encoded in a television signal and transmitted through a cathode ray tube of a television. The smart card also includes circuitry for storing the promotion data and circuitry for executing the promotions associated with the promotion data, including circuitry for displaying a promotion in the form of a UPC code on an LCD display. The smart card further includes circuitry for interacting with a user through the LCD display and a plurality of buttons.
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