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US 2002/0120495 A1Published application
Retail systems and methods employing a product shelf display to provide purchase incentives
OwnerKen R. Powell, Thomas M. Hintz +1inventors
InventorsKEN R. POWELL, THOMAS M. HINTZ, ELEANOR B. MAXWELL
Life of this patent
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Abstract
Retail systems and methods employing a product shelf display to provide purchase incentives.
Claims20
A method for a system with a plurality of portable cards, the method comprising:
- sending a first signal to a first card in the plurality of portable cards, responsive to a purchased product;
- selectively sending a second signal to the first card, depending on whether the second signal corresponds to a first signal on the card;
- receiving the second signal from the first card;
- receiving a third signal corresponding to a product selected for purchase;
- and
- determining an amount due depending on whether the third signal corresponds to a second signal on the first card.
3 more elements
A system for operating with a plurality of portable cards, the system comprising:
- a first card-writer with circuitry configured to write a first signal to a first card in the plurality of portable cards, responsive to a purchased product;
- a second card-writer with circuitry configured to selectively write a second signal to the first card, depending on whether the second signal corresponds to a first signal on the card;
- a card-reader with circuitry configured to send second signals from the first card;
- a signal generator that generates a third signal corresponding to a product selected for purchase;
- and
- a determiner an amount due depending on whether the third signal corresponds to a second signal from the card-reader.
3 more elements
Dependencies are inferred from the claim text.