AU3421295A - Apparatus for electronic article surveillance - Google Patents
Apparatus for electronic article surveillanceInfo
- Publication number
- AU3421295A AU3421295A AU34212/95A AU3421295A AU3421295A AU 3421295 A AU3421295 A AU 3421295A AU 34212/95 A AU34212/95 A AU 34212/95A AU 3421295 A AU3421295 A AU 3421295A AU 3421295 A AU3421295 A AU 3421295A
- Authority
- AU
- Australia
- Prior art keywords
- alarm
- responds
- article
- field
- attached
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2482—EAS methods, e.g. description of flow chart of the detection procedure
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The electronic monitoring and alarm system is used to provide protection against the theft of articles. The system has a voltage controlled oscillator (2) that connects with a power amplifier (3) that outputs a signal to a transmitter (4) to create an electromagnetic field. The field produced interacts with a security hanger element (5) attached to the article that forms part of a resonator circuit. A receiver (6) responds to provide an input to a detector (7) coupled to an alarm (8) and responds to both amplitude and phase changes. If the article is passed through the field with the hanger attached the alarm is triggered.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4436977 | 1994-10-15 | ||
DE4436977A DE4436977A1 (en) | 1994-10-15 | 1994-10-15 | System for electronic article surveillance |
Publications (2)
Publication Number | Publication Date |
---|---|
AU3421295A true AU3421295A (en) | 1996-05-02 |
AU684389B2 AU684389B2 (en) | 1997-12-11 |
Family
ID=6530920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU34212/95A Ceased AU684389B2 (en) | 1994-10-15 | 1995-10-12 | Apparatus for electronic article surveillance |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0707296B1 (en) |
AT (1) | ATE182708T1 (en) |
AU (1) | AU684389B2 (en) |
DE (2) | DE4436977A1 (en) |
ES (1) | ES2135637T3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19642985A1 (en) * | 1996-10-18 | 1998-04-23 | Esselte Meto Int Gmbh | Device for monitoring an electronic security element in an interrogation zone |
DE19950145C1 (en) | 1999-10-18 | 2001-05-10 | Lucatron Ag Baar | Process for reading and writing RFID transponders |
ES2168941B1 (en) * | 2000-02-15 | 2004-08-16 | Mario Gutierrez Gonzalez | A SECURITY SYSTEM, FOR PROTECTION / CONTROL OF PERSONS, ANIMALS OR OBJECTS ANY. |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4476459A (en) * | 1981-10-23 | 1984-10-09 | Knogo Corporation | Theft detection method and apparatus in which the decay of a resonant circuit is detected |
NL8900658A (en) * | 1989-03-17 | 1990-10-16 | Nedap Nv | HIGH-FREQUENT SHOPPING THEFT DETECTION SYSTEM ACCORDING TO THE TRANSMISSION PRINCIPLE. |
US4967185A (en) * | 1989-08-08 | 1990-10-30 | Minnesota Mining And Manufacturing Company | Multi-directionally responsive, dual-status, magnetic article surveillance marker having continuous keeper |
US5349339A (en) * | 1992-04-07 | 1994-09-20 | Actron Entwicklungs Ag | Apparatus for the detection of labels employing subtraction of background signals |
NL9300180A (en) * | 1993-01-28 | 1994-08-16 | Nedap Nv | Detection of resonance by single-sideband demodulation. |
-
1994
- 1994-10-15 DE DE4436977A patent/DE4436977A1/en not_active Withdrawn
-
1995
- 1995-09-19 DE DE59506460T patent/DE59506460D1/en not_active Expired - Lifetime
- 1995-09-19 ES ES95114703T patent/ES2135637T3/en not_active Expired - Lifetime
- 1995-09-19 EP EP95114703A patent/EP0707296B1/en not_active Expired - Lifetime
- 1995-09-19 AT AT95114703T patent/ATE182708T1/en not_active IP Right Cessation
- 1995-10-12 AU AU34212/95A patent/AU684389B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
EP0707296B1 (en) | 1999-07-28 |
ATE182708T1 (en) | 1999-08-15 |
ES2135637T3 (en) | 1999-11-01 |
AU684389B2 (en) | 1997-12-11 |
DE59506460D1 (en) | 1999-09-02 |
EP0707296A1 (en) | 1996-04-17 |
DE4436977A1 (en) | 1996-04-18 |
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