Multi-bit EAS marker powered by interrogation signal in the eight MHz band
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 29, 1997
Grant Date -
N/A
app pub date -
Aug 31, 1995
filing date -
Aug 31, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multi-bit electronic article surveillance marker includes an antenna circuit and is powered by an interrogation field generated by EAS detection equipment and received by the marker's antenna circuit. The marker generates a multi-bit signal by selectively disturbing the interrogation field. The disturbances may be created by selectively short circuiting the marker's antenna circuit. All of the marker circuitry, including a coil that is part of the antenna circuit, may be provided as circuit elements formed on a semiconductor integrated circuit substrate.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully