Method and chip card for transmitting information
US9547498B2 · kind B2 · utility
0Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2013 |
| Grant date | Jan 17, 2017 |
| Priority date | — |
| Expiry date | Aug 3, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/004
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A card including a data transmission mechanism using annex transmission channels. A method is described for the transmission of data by a chip card at an end of its life using hidden communication channels different from standard communication channels of the card. The data are transmitted by modulating a binary signal that results from a modification of a hardware parameter of the card.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.