A control unit transmits address area designation information designating an arbitrary bit position in ID data. At least a response unit transmits a response signal with an error detection code attached to predetermined information in the unique information held in itself by means of a time slot determined...http://www.google.fr/patents/US6134692?utm_source=gb-gplus-shareBrevet US6134692 - Information identification system for identifying response units by a control unit, and the control unit and the response units for the information identification system
Information identification system for identifying response units by a ...
