NL7712500A - DETECTION SYSTEM WITH NON-LINEAR RESONANCE CHAIN. - Google Patents

DETECTION SYSTEM WITH NON-LINEAR RESONANCE CHAIN.

Info

Publication number: NL7712500A
Authority: NL; Netherlands
Prior art keywords: detection system; linear resonance; resonance chain; chain; linear
Prior art date: 1976-11-15

Application number

NL7712500A

Other languages

Dutch (nl)

Original Assignee

Nedap Nv

Priority date (The priority date 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 date listed.)

1976-11-15

Filing date

1977-11-14

Publication date

1978-05-17

1977-11-14 Application filed by Nedap Nv filed Critical Nedap Nv

1978-05-17 Publication of NL7712500A publication Critical patent/NL7712500A/en

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
- G08B13/2422—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 acoustic or microwave 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
- G08B13/2428—Tag details
- G08B13/2431—Tag circuit details

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Automation & Control Theory (AREA)
Computer Security & Cryptography (AREA)
Electromagnetism (AREA)
General Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Burglar Alarm Systems (AREA)
Radar Systems Or Details Thereof (AREA)
Geophysics And Detection Of Objects (AREA)

NL7712500A 1976-11-15 1977-11-14 DETECTION SYSTEM WITH NON-LINEAR RESONANCE CHAIN. NL7712500A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB4751376A GB1586069A (en)	1976-11-15	1976-11-15	Detection systems

Publications (1)

Publication Number	Publication Date
NL7712500A true NL7712500A (en)	1978-05-17

Family

ID=10445252

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7712500A NL7712500A (en)	1976-11-15	1977-11-14	DETECTION SYSTEM WITH NON-LINEAR RESONANCE CHAIN.

Country Status (5)

Country	Link
BE (1)	BE860830A (en)
DE (1)	DE2750863A1 (en)
FR (1)	FR2371128A7 (en)
GB (1)	GB1586069A (en)
NL (1)	NL7712500A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1190970A (en) *	1980-10-09	1985-07-23	Harold B. Williams	Dual frequency anti-theft system
DE3234601A1 (en) *	1982-09-17	1984-03-22	Siemens AG, 1000 Berlin und 8000 München	Arrangement for marking persons and objects
NL8204802A (en) *	1982-12-10	1984-07-02	Nedap Nv	DETECTION PLATE WITH NON-LINEAR CIRCUIT FOR A DETECTION SYSTEM.
DE3324957A1 (en) *	1983-07-11	1985-01-31	Sennheiser Electronic Kg, 3002 Wedemark	Method for supplying a portable slave station of a data transmission system with power
DE3840347A1 (en) *	1988-11-30	1990-05-31	Landstorfer Friedrich	Method for measuring the total distance between a transmitting location, a reference location and a receiving location
NL9300991A (en) *	1993-06-09	1995-01-02	Nedap Nv	Theft detection system.
DE19541855C1 (en) *	1995-11-09	1997-02-20	Siemens Ag	Theft protection system for motor vehicles

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3631442A (en) *	1968-03-22	1971-12-28	Robert E Fearon	Anti-shoplifting system
DE2352807C3 (en) *	1973-10-20	1979-10-25	Philips Patentverwaltung Gmbh, 2000 Hamburg	The total frequency generating responder for a transmitting and receiving system for the detection of movable bodies

1976
- 1976-11-15 GB GB4751376A patent/GB1586069A/en not_active Expired
1977
- 1977-11-14 DE DE19772750863 patent/DE2750863A1/en active Granted
- 1977-11-14 NL NL7712500A patent/NL7712500A/en not_active Application Discontinuation
- 1977-11-15 FR FR7734339A patent/FR2371128A7/en not_active Expired
- 1977-11-16 BE BE2056431A patent/BE860830A/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
FR2371128A7 (en)	1978-06-09
BE860830A (en)	1978-05-16
DE2750863C2 (en)	1988-10-20
DE2750863A1 (en)	1978-05-18
GB1586069A (en)	1981-03-18

Publication	Publication Date	Title
NO774268L (en)	1978-06-21	DETECTION SYSTEM.
NL7710366A (en)	1978-03-29	SECURITY DEVICE.
NL7708012A (en)	1979-01-23	DETECTION SYSTEM.
NL7709279A (en)	1978-02-27	IMAGE-SHAPING SYSTEM.
NL7703580A (en)	1977-10-04	IMAGE-SHAPING SYSTEM.
NL7807785A (en)	1979-02-06	TRANSPORTER.
NL7703581A (en)	1977-10-04	IMAGE-SHAPING SYSTEM.
NO782848L (en)	1979-02-27	DETECTION SYSTEM.
NL7700321A (en)	1977-07-15	DISPLAY SYSTEM.
NL174191C (en)	1984-05-01	INTRUDER DETECTION SYSTEM.
NL7713485A (en)	1978-06-13	CHARACTERISTIC DETECTION SYSTEM.
NL7712645A (en)	1978-05-22	HOOK DEVICE.
NL7706464A (en)	1977-12-16	FACSIMIL SYSTEM.
NL182792B (en)	1987-12-16	TRANSPORTATION SYSTEM.
NL7606899A (en)	1977-12-28	OPTO-ELECTRICAL DETECTION SYSTEM.
NL7710833A (en)	1978-04-06	KEY PROFILE SYSTEM.
NL7805524A (en)	1978-11-27	DETECTION SYSTEM.
NL7702767A (en)	1977-09-20	ENTRY ALARM SYSTEM.
NO771179L (en)	1977-10-06	CHAIN.
NO770362L (en)	1977-08-05	CHAIN.
NL7706074A (en)	1977-12-06	ALARM DEVICE.
NL7700913A (en)	1977-08-02	DISPLAY SYSTEM.
NL7605275A (en)	1977-11-22	DATA RECEIVER WITH SYNCHRONIZE SERIES DETECTION CHAIN.
NL7704609A (en)	1977-11-01	DEVICE CHAIN.
NL7711885A (en)	1978-05-03	CATHODY SYSTEM.

Legal Events

Date	Code	Title
1984-12-03	BA	A request for search or an international-type search has been filed
1985-01-01	A85	Still pending on 85-01-01
1987-12-01	BB	A search report has been drawn up
1988-04-05	BC	A request for examination has been filed
1990-07-02	BV	The patent application has lapsed