Display device for a portable data carrier
US6902115B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2001 |
| Grant date | Jun 7, 2005 |
| Priority date | — |
| Expiry date | Jul 16, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a portable data carrier having a display device. This data carrier contains a microprocessor and storage devices associated with the microprocessor as well as means for displaying data stored in the storage devices associated with the microprocessor. In addition, the data carrier contains a display controller for controlling the display means and an energy supply unit for supplying at least the display unit and its controller with energy.Such a data carrier is to be improved so as to reduce the energy demand for the display unit. This is obtained by a nonvolatile memory disposed separately from the microprocessor and its storage device, said memory being associated with the controller of the display means and containing the data intended for display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.