Electronic article surveillance system with transition zone tag

Details Electronic article surveillance system with transition zone tag Electronic article surveillance system with transition zone tag

1992-11-16

1994-02-08

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340551, G08B 1318, G08B 1324

Patent

active

052851940

ABSTRACT:
An EAS system having a protection zone in which tags are to be detected and a transition zone outward of the protection zone beyond which tagged articles for sale and/or monitoring can be displayed. The EAS system includes a receiving and processing unit which processes received signals in accordance with first and second different criteria to develop a first signal which can, be used to indicate the presence of a tag in the protection zone and a second signal which can be used to indicate the presence of a tag in the transition zone. Visual indication of the tags in the transition zone is also selectively provided.

REFERENCES:
patent: 4063229 (1977-12-01), Welsh et al.
patent: 4139844 (1979-02-01), Reeder
patent: 4212002 (1980-07-01), Williamson
patent: 4274090 (1981-06-01), Cooper
patent: 4356477 (1982-10-01), Vandebult
patent: 4510489 (1985-04-01), Anderson et al.
patent: 4778552 (1988-10-01), Benge et al.
patent: 4812822 (1989-03-01), Feltz et al.
patent: 4859991 (1989-08-01), Watkins et al.

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