Circuit for detecting and formatting data frames
US7003407B1 · kind B1 · utility
5Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2000 |
| Grant date | Feb 21, 2006 |
| Priority date | — |
| Expiry date | Dec 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns non-contact smart cards and, more particularly in such cards, a circuit for detecting data frames and providing them with a parallel format for their processing. The invention is characterised in that it consists in using the information contained in the first octets of the frame being currently received, thereby enabling to identify them as they are received and route them into registers (80). This is provided by a state machine (60) whereof the shift from one state to the other is switched by the circuitry (62, 76) output signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.