Patent ID: 7712674
Filing Date: 2010-05-11
Classification: G06K,G08B,H04Q

Abstract:
1. A radio frequency identification (RFID) system comprising: an RFID device securing a carton, said device comprising a substrate comprising a plurality of RFID transceivers operatively networked to one another in a fixed, repeated pattern, wherein each of said RFID transceivers generates a response signal, wherein each response signal comprises either an end signal or a middle signal, wherein an end signal provides information indicating that a given RFID transceiver is at an end of said fixed, repeated pattern and is operatively connected to only one other of said RFID transceivers, and wherein a middle signal provides information indicating that a given RFID transceiver is not at an end of said fixed, repeated pattern and is operatively connected to at least two other of said RFID transceivers, and wherein each RFID transceiver comprises an on-board capacitor, said capacitor discharging upon a disconnection with said networked transceivers to force a disconnected said RFID transceiver to change its response from a middle signal to an end signal; a master RFID device attached to said carton and operative to sample said plurality of RFID transceivers for middle and end signals for ensuring integrity, wherein said master RFID device is operative to determine whether a disconnection has occurred by determining whether there is a discrepancy between a number of sampled end and middle signals recorded at said master RFID device and a number of end and middle signals pre-stored in an electronic manifest.