Patent ID: 6097301
Filing Date: 2000-08-01
Classification: G01S,G06K,G08B,H04W

Abstract:
A method of adjusting the two-way communication range of an RFID system to permit a person to individually handle and interrogate each one of a plurality of tagged objects, each tagged object having an RFID tag transceiver, comprising the steps of:mounting on the person an RFID interrogator transceiver having an antenna:mounting the antenna of the interrogator transceiver near one hand of the person, so that the person can reduce the distance between the antenna and a tag transceiver to a minimum distance by extending his hand toward the tag transceiver;mounting on each tagged object an RFID tag transceiver, whereineach tag transceiver is characterized by a set of one or more performance parameters which control a reliable two-way communications range between that tag transceiver and the interrogator transceiver, andthe interrogator transceiver is characterized by a set of one or more performance parameters which control the reliable two-way communications range between the interrogator transceiver and any of the tag transceivers; andadjusting at least one of the performance parameters so that the reliable two-way communications range between the interrogator transceiver and the transceiver of each of the tagged objects slightly exceeds said minimum distance.