Jamming apparatus for electronic article surveillance systems

Details Jamming apparatus for electronic article surveillance systems Jamming apparatus for electronic article surveillance systems

1990-11-26

1992-01-21

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

455 1, G08B 1314, H04K 300

Patent

active

050831119

ABSTRACT:
In an electronic article surveillance system, a jamming apparatus is provided for establishing a jamming zone in which tags can be situated and not respond to message signals from a surveillance system transmitter and in which the surveillance system receiver can be situated and still respond to tag signals.

REFERENCES:
patent: 4686513 (1987-08-01), Farrar et al.
patent: 4769631 (1988-09-01), Copeland
patent: 4821023 (1989-04-01), Parks
patent: 4866424 (1989-09-01), Parks
patent: 4888579 (1989-12-01), ReMine et al.
patent: 4893027 (1990-01-01), Kammerer et al.

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