Metal screened electronic labelling system

Details Metal screened electronic labelling system Metal screened electronic labelling system

2005-10-18

2005-10-18

Trieu, Van T. (Department: 2636)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S572700

Reexamination Certificate

active

06956481

ABSTRACT:
A metal screened (13) electronic labelling system having at least one information bearing electronic coded label including a label coil (12) and an interrogator including a transmitter coil (9). The system relies on a magnetic field coupling link containing the transmitter coil (9) and the label coil (12) for obtaining information from the label. The coupling link is arranged such that it operates in the near field thereof and substantially none or at most a minority of the magnetic flux which excites the label coil (12) also links the transmitter coil (9).

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