DISPOSITIF DE SECURITE A L'EGARD D'UN ACCES NON AUTORISE A UN OBJET OU A L'EGARD D'UNE UTILISATION NON AUTORISEE D'UN OBJET ET PROCEDE DE MISE EN OEUVRE DU DISPOSITIF DE SECURITE

摘要

The security mechanism prevents non authorised access to an object (1) or non authorised use of an object. There are several generators of coded signals (4,5,6). The coded signal generator receives an interrogation signal sent by the transmitter and receiver unit. The signal response is received and a transformation unit transforms the signal to the image time domain producing a response to a single way input signal.