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OwnerJoseph H. Vogelman, Edward R. Palombiinventors
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A system for delivering audio advertising messages to shopping carts moving through a plurality of spatially defined transmission zones arranged in the aisles of a store. In the illustrative embodiment, a plurality of transmitters of compact construction are each attached to a shelf within the store. Each shelf transmitter has a spatially defined transmission zone of selected geometry and predetermined dimensions so as to occupy an assigned region of space within one of the aisles in the store. When any one of these transmitters detects a shopping cart residing in its spatially defined transmission zone, the transmitter transmits over its spatially defined transmission zone, a modulated signal carrying an audio message provided by a playback mechanism within the transmitter. A receiver on the detected shopping cart demodulates the received modulated carrier signal and produces an audible signal of the audio message provided by the playback mechanism in the transmitter. As a result of the present invention, the same carrier frequency can be used by each shelf transmitter throughout the store, permitting the use of identical shelf transmitters, while the construction of the shopping cart receivers is made remarkably simple and inexpensive.
A system for delivering audible advertising messages to shopping carts in a store as said shopping carts are moved through a plurality of spatially defined transmission zones arranged in the aisles of said store, said system comprising:
A system for delivering audible advertising messages to shopping carts in a store as said shopping carts are moved through a plurality of spatially defined transmission zones arranged in the aisles of said store, said system comprising:
Dependencies are inferred from the claim text.