Card with rewriteable display
First Claim
Patent Images
1. A transaction card comprising:
- an electronically-alterable display forming at least a portion of a transaction card, wherein the display is alterable through the application of an external field without requiring any circuitry on the card; and
an information storage medium, wherein;
the display comprises capsules that have a light and dark color;
the capsules contain bichromal material;
the bichromal material may change orientation in response to the external field;
the orientation of the bichromal material determines an image or value on the display; and
the display is integral to the transaction card.
1 Assignment
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Accused Products
Abstract
A transaction card is formed of an electrically-alterable display material. The display may be altered by the application of an external field, without requiring any circuiting on the card. The card also includes an information storage medium, and both the information storage medium and the display may be accessed by a card reader.
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Citations
22 Claims
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1. A transaction card comprising:
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an electronically-alterable display forming at least a portion of a transaction card, wherein the display is alterable through the application of an external field without requiring any circuitry on the card; and an information storage medium, wherein; the display comprises capsules that have a light and dark color; the capsules contain bichromal material; the bichromal material may change orientation in response to the external field; the orientation of the bichromal material determines an image or value on the display; and the display is integral to the transaction card. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of changing a display member on a card comprising:
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receiving, by a card reader, a card; reading, by the card reader, information from an information storage medium on the card; processing the information to determine an item to be displayed; and writing the item to a human readable display on the card by configuring bichromal material to display the item wherein; the bichromal material is contained in capsules; the bichromal material may change orientation in response to an external field; the orientation of the bichromal material determines an image or value on the display; and the display is integral to the card. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A transaction card, comprising:
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an information storage medium; and a readdressable display comprising bichromal material that is responsive to a selectively applied field to produce an image on the display; wherein; the bichromal material is contained in capsules; the bichromal material may change orientation in response to the applied field; the orientation of the bichromal material determines an image or value on the display; no circuitry or power source is required on the card to create or maintain the display; and the display is integral to the transaction card. - View Dependent Claims (19, 20, 21, 22)
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Specification