Point of sale inductive systems and methods
First Claim
1. A product identification device for use with an inductive reader comprising:
- a point of sale storage device for a product;
a product identification circuit supported by the storage device and including a plurality of isolated resonant circuits electrically isolated from one another and each defining a resonant frequency, wherein each of the plurality of isolated resonant circuits includes an inductive element and a shielding element to at least partially encompass the inductive element, and wherein the product identification circuit includes a reflected impedance based on the resonant frequency of each of the plurality of isolated resonant circuits and based on the shielding element of each of the plurality of isolated resonant circuits, such that the product can be identified remotely at a point of sale based on the reflected impedance; and
a secondary coil electrically coupled to an electrical load supported by the point of sale storage device, the secondary coil being configured to receive power from the inductive reader for transfer to the electrical load.
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Accused Products
Abstract
Systems and methods for the identification, powering and control of products and product packaging. The systems can include a point of sale display having a contactless power supply. The contactless power supply can provide a source of wireless power for products and product packaging. The products and product packaging can include light emitting diodes, e-ink displays and printed speaker circuits that activate as the operating frequency of the contactless power supply varies. Other embodiments include product level sensors, inductive reader networks, printed temperature sensors, product alignment systems, passive identification circuits and methods for controlling operation of the same.
264 Citations
47 Claims
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1. A product identification device for use with an inductive reader comprising:
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a point of sale storage device for a product; a product identification circuit supported by the storage device and including a plurality of isolated resonant circuits electrically isolated from one another and each defining a resonant frequency, wherein each of the plurality of isolated resonant circuits includes an inductive element and a shielding element to at least partially encompass the inductive element, and wherein the product identification circuit includes a reflected impedance based on the resonant frequency of each of the plurality of isolated resonant circuits and based on the shielding element of each of the plurality of isolated resonant circuits, such that the product can be identified remotely at a point of sale based on the reflected impedance; and a secondary coil electrically coupled to an electrical load supported by the point of sale storage device, the secondary coil being configured to receive power from the inductive reader for transfer to the electrical load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A product identification system comprising:
an inductive reader including a primary tank circuit, the inductive reader being adapted to generate an electromagnetic field and adapted to determine the identity of a product at the point of sale based on the reflected impedance of a product identification circuit generated as a result of the electromagnetic field, wherein the product identification circuit includes a plurality of isolated resonant circuits, each isolated resonant circuit being electrically isolated from each other and including an inductive element defining a resonant frequency and a shielding element to at least partially encompass the inductive element, the plurality of isolated resonant circuits being included on a storage device for the product, wherein the storage device includes a secondary coil electrically coupled to an electrical load and configured to receive power from the inductive reader at the point of sale for transfer to the electrical load. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 44)
- 15. The product identification system of 14 wherein the inductive reader is a first inductive reader, the system further comprising a second inductive reader.
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38. A method for forming a product identification device for use with an inductive reader at a point of sale, comprising:
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providing a point of sale storage device associated with a device identifier; providing a passive identification circuit including a reflected impedance based on a plurality of isolated resonant circuits each including an inductive element defining a resonant frequency and a shielding element at least partially encompassing the inductive element, wherein the plurality of isolated resonant circuits are electrically isolated from each other, and wherein the device identifier is based on the reflected impedance of the passive identification circuit; providing an electrical load coupled to a secondary coil that is configured to receive power from the inductive reader for powering the electrical load; and joining the product identification circuit, the secondary coil and the electrical load to the storage device. - View Dependent Claims (39, 40, 41, 42, 43, 45, 46, 47)
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Specification