Method of and device for transmitting serial data structures in systems for identifying information carriers
US5519729A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1994 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | May 6, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/0008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A process is disclosed for transmitting serial data structures for information carrier identification systems (RF-ID systems), a transmission system working according to this process and an information carrier for contactless, electromagnetic transmission of serial data structures. The identification system has an interface (antenna) and an information carrier (transponder). The transmission process is essentially characterized in that a time-parallel data transmission and comparison between the data emitted by the interface and the data immediately sent back by the information carrier is carried out. The information data carrier has as essential components two appropriately sizeable receiving and emitting inductances and a multiplexer that is connected with a demodulator, a control logic and a non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.