RFID conveyor system

Details RFID conveyor system RFID conveyor system

2006-03-23

2009-06-30

Tweel, Jr., John A (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572700

Reexamination Certificate

active

07554447

ABSTRACT:
A conveyor system for processing items on which radio frequency identification tags are disposed includes a frame, a conveyor that is disposed moveably on the frame and that conveys items through a path of travel, each item having at least one respective radio frequency identification tag disposed thereon. A first antenna is disposed proximate the path of travel so that the first antenna radiates first radio frequency signals into a first area through which the items pass. A second antenna is disposed proximate the path of travel so that the second antenna receives first responses to the first radio frequency signals from the respective radio frequency identification tags. The information identifies a class protocol. A third antenna is disposed proximate the path of travel downstream from the first antenna and the second antenna. A fourth antenna is disposed proximate the path of travel so that the fourth antenna receives second responses to the radio frequency signals from the respective radio frequency identification tags. A transmitter drives the first antenna to emit the first radio frequency signals into the first area and drives the third antenna to emit second radio frequency signals into a second area. A radio frequency receiver receives signals from the second antenna corresponding to the first responses and outputs first output signals corresponding to the first responses and including the information. The receiver receives signals from the fourth antenna corresponding to the second responses and outputs second output signals corresponding to the second responses. A processor receives the first output signals and controls the transmitter to drive the third antenna responsively to the first output signals.

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