System for the transmission of data from a data carrier to a station by means of one or at least one other auxiliary carrier signal
US6559754B1 · kind B1 · utility
13Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1999 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Jul 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Data transmission from a data carrier (D) to a station (1) normally takes place by load modulation of a non-modulated carrier signal (CS) by means of an auxiliary carrier signal (SCS1), test means provided in the station then test the correct data transmission and, upon detection of disturbed data transmission, a change over is made to an other transmission mode in which data transmission takes place from the data carrier (D) to the station (1) by means of load modulation of the non-modulated carrier signal (CS) by means of at least one other auxiliary carrier signal (SCS2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.