Device for despatching a secure output command
US7550868B2 · kind B2 · utility
2Cited by
4References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 2005 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Dec 6, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention aims to provide a compact device for despatching a command. For this purpose, the invention proposes a novel type of output stage. A secure verification device of the despatching of a binary command signal from at least one conductor has an input terminal and an output terminal. Means of insertion despatch a verification message on said conductor. At least one optical coupler has an emission diode coupled to the conductor so as to copy the verification message when the binary signal is in a first state and not to copy it when it is in a second state different from the first state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.