Method and System for Networking Radio Tags in a Radio Frequency Identification System

• US 20120293308A1
• Filed: 07/30/2012
• Published: 11/22/2012
• Est. Priority Date: 07/20/1999
• Status: Abandoned Application

• Current Assignee: Axcess International, Inc. (Amphion Innovations PLC)
• Original Assignee: Axcess International, Inc. (Amphion Innovations PLC)
• Inventors: Steeves, Wayne E.
• Application Number:
  US13/561,779
• Publication Number:
  US 20120293308A1
• Time in Patent Office: Days
• US Class Current: 340/10.3
• CPC Class Codes: G06K 7/10108 interrogating only those RFIDs that fulfill a predetermined requirement, e.g. selecting all RFIDs having the same speed and moving in a cloud like fashion, e.g. on the same train; interrogating only RFIDs having a certain predetermined temperature, e.g. in the same fridge, another possibility being the active ignoring of a group of tags that fulfill a predetermined requirement, equivalent to the Boolean NOT operation
• CPC Class Codes: G08B 13/1427 with transmitter-receiver for distance detection
• CPC Class Codes: G08B 13/2462 Asset location systems combined with EAS inventory, tracking, logistic G06Q10/00; entrance control systems G07C9/00

Abstract

A radio frequency tag for a radio frequency identification system is provided that includes an antenna and a receiver coupled to the antenna. The receiver receives and demodulates a message received on at least one frequency. A retransmit controller receives the message, determines a retransmit status for the message, and if the retransmit status is positive, initiates retransmission of the message for reception by another radio tag.

Claims

1. A radio frequency tag for a radio frequency identification system, comprising:

an antenna system;

a receiver coupled to the antenna system to receive and demodulate a message on at least one frequency; and

a retransmit controller operable to receive the message, determine a retransmit status for the message, and initiate retransmission of the message for reception by another radio frequency tag in response to a positive retransmit status for the message.

2-31. -31. (canceled)