Microprocessor card including a hard-wired communication circuit
US7201325B1 · kind B1 · utility
0Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1999 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Jan 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to cards with a microprocessor and contacts. The invention lies in the fact that a communication device of the asynchronous type is disposed between the contacts and the microprocessor so as to relieve the microprocessor of the communication tasks and thus allow better use of the central unit of the microprocessor and the associated memories. This device includes an analysis circuit, a circuit for checking the integrity of the series of pulses, a circuit for determining the characters in the series of pulses and pluralities of registers which are connected with the microprocessor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.