Overloaded card information display
US6431443B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/0806
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A card structure provides an existing card having an associated card service and further having at least one associated service of at least one other card that is used by a card user. A display is coupled to the card structure for displaying desired information on the overloaded card. The overloaded card display comprises a silicone sheet display having embedded thereon an array of electrostatically chargeable balls. An electric charge is applied to each of the balls so that each of the balls is in a desired position to display the information on the overloaded card. The card is read by a reader at a card terminal, and an array of electrodes that charge and manipulate the balls face the display to charge them so that images programmed at the electrodes are left thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.