Patent ID: 6505771
Filing Date: 2003-01-14
Classification: G06K,H04B

Abstract:
A process for transferring, by close electromagnetic connection, data betweena plurality of nomad objects with different technical feed characteristics and communication means, particularly different modulation methods and/or communication protocols, and at least one universal reader adapted to be used whatever the characteristics of the nomad objects; said process comprising at least one of the following steps: said universal reader searches for said nomad objects which are in said universal reader's field of detection by emitting a signal scanning the different modulation modes, each nomad object, receiving the scanning signal from said universal reader produces an echo signal according to said nomad object's specific protocol, said universal reader analyses each echo signal and deduces thereon the specific protocol applied by an identified nomad object, said universal reader inserts, in accordance with said specific protocol, messages to be emitted into reader frames adapted to be interpreted by the identified nomad object; said universal reader emits to the identified nomad object an electromagnetic signal modulated according to said reader frames.