초록 ▼

A memory of a data carrier attached to an article to be identified stores a classification code indicative of the data carrier\s own communication protocol. Plural types of communication protocols are registered, in correspondence with the classification codes thereof, in the memory of a controller

A memory of a data carrier attached to an article to be identified stores a classification code indicative of the data carrier\s own communication protocol. Plural types of communication protocols are registered, in correspondence with the classification codes thereof, in the memory of a controller capable of communicating with the data carrier. Upon receiving a classification code transmitted by the data carrier, the controller selects from its memory a communication protocol indicated by the received classification code and then executes communication with the data carrier by using the selected communication protocol.

대표청구항 ▼

A method of controlling communication in an ID system in which an exchange of data is carried out between a controller and plural types of data carriers having respective internal memories and different communication protocols, said method comprising the steps of: previously registering the differen

A method of controlling communication in an ID system in which an exchange of data is carried out between a controller and plural types of data carriers having respective internal memories and different communication protocols, said method comprising the steps of: previously registering the different types of communication protocols of the plurality of data carriers in a memory of said controller in correspondence with classification information of the communication protocols; previously registering in the memory of each data carrier the classification information of its own communication protocol; causing said controller to receive classification information sent by a data carrier at the beginning of communication; causing said controller to select a corresponding communication protocol from its memory using the received classification information; and causing said controller to communicate with the corresponding data carrier in accordance with the selected communication protocol.