Card with embedded bistable display having short and long term information
US7761332B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2008 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Aug 25, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/086
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A transaction card system includes a transaction cared with a display tag for displaying short term information, the character display having optical states that are stable without power and viewable from one side of the display tag and an array of electrical contacts for electrically addressing the character display from the other side of the tag, a contact window through which the contacts are accessible, machine readable data on the card, and long term information printed on the transaction card; a transaction card writer having a reader for reading the machine readable data and having means for updating the short term information displayed on the transaction card; and a central computer connected to the transaction card writer having a data base and a central processor for receiving the information read by the magnetic card reader and generating display commands for the transaction card writer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.