NL9300180A - Detection of resonance by single-sideband demodulation. - Google Patents

Detection of resonance by single-sideband demodulation. Download PDF

Info

Publication number
NL9300180A
NL9300180A NL9300180A NL9300180A NL9300180A NL 9300180 A NL9300180 A NL 9300180A NL 9300180 A NL9300180 A NL 9300180A NL 9300180 A NL9300180 A NL 9300180A NL 9300180 A NL9300180 A NL 9300180A
Authority
NL
Netherlands
Prior art keywords
resonance
detection
sideband demodulation
sideband
demodulation
Prior art date
Application number
NL9300180A
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.)
Filing date
Publication date
Application filed by Nedap Nv filed Critical Nedap Nv
Priority to NL9300180A priority Critical patent/NL9300180A/en
Priority to DE1994612872 priority patent/DE69412872T2/en
Priority to ES94200205T priority patent/ES2121139T3/en
Priority to EP19940200205 priority patent/EP0608961B1/en
Publication of NL9300180A publication Critical patent/NL9300180A/en

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
    • G08B13/2405—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
    • G08B13/2417—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 having a radio frequency identification chip
    • 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
    • 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
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
NL9300180A 1993-01-28 1993-01-28 Detection of resonance by single-sideband demodulation. NL9300180A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL9300180A NL9300180A (en) 1993-01-28 1993-01-28 Detection of resonance by single-sideband demodulation.
DE1994612872 DE69412872T2 (en) 1993-01-28 1994-01-28 Method and system for the detection of resonance effects of a label in a wobbled query field by means of single sideband demodulation
ES94200205T ES2121139T3 (en) 1993-01-28 1994-01-28 PROCEDURE AND SYSTEM FOR THE DETECTION OF THE RESONANCE EFFECTS OF A LABEL IN A FIELD OF FREQUENCY SWEEP INTERROGATION THROUGH THE DEMODULATION OF A SINGLE SIDE BAND.
EP19940200205 EP0608961B1 (en) 1993-01-28 1994-01-28 Detection system for detecting resonance effects of a label in a frequency-swept interrogation field by means of single sideband demodulation and method for carrying out such detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9300180A NL9300180A (en) 1993-01-28 1993-01-28 Detection of resonance by single-sideband demodulation.

Publications (1)

Publication Number Publication Date
NL9300180A true NL9300180A (en) 1994-08-16

Family

ID=19861997

Family Applications (1)

Application Number Title Priority Date Filing Date
NL9300180A NL9300180A (en) 1993-01-28 1993-01-28 Detection of resonance by single-sideband demodulation.

Country Status (4)

Country Link
EP (1) EP0608961B1 (en)
DE (1) DE69412872T2 (en)
ES (1) ES2121139T3 (en)
NL (1) NL9300180A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4436977A1 (en) * 1994-10-15 1996-04-18 Esselte Meto Int Gmbh System for electronic article surveillance
EP0700026A1 (en) * 1995-07-25 1996-03-06 Actron Produktion AG Method and apparatus for remotely detecting electric resonant circuits
DE19908879A1 (en) * 1999-03-01 2000-09-07 Georg Siegel Gmbh Zur Verwertu Process for retrofitting sensor systems for security tags
NL1011416C2 (en) * 1999-03-01 2000-09-06 Nl App Nfabriek Oenedapoe Nv Single side band transmitter application and circuits for RF ID interrogation unit.
NL1011673C2 (en) * 1999-03-25 2000-09-27 Nedap Nv Rotating field receiver for magnetic identification system.
US8933790B2 (en) 2007-06-08 2015-01-13 Checkpoint Systems, Inc. Phase coupler for rotating fields
AU2008261850A1 (en) 2007-06-08 2008-12-18 Checkpoint Systems, Inc. Dynamic EAS detection system and method
DE102011014317B4 (en) * 2011-03-18 2021-07-29 Robert Bosch Gmbh Sensor monitoring of a position measuring device by means of heat noise
AU2013348455B2 (en) 2012-11-23 2019-03-14 Delaval Holding Ab Registering of a transponder tag via an alternating electromagnetic field
CN207051913U (en) 2014-05-06 2018-02-27 利拉伐控股有限公司 Registered via the transponder label of alternating electromagnetic field

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8202951A (en) * 1982-07-21 1984-02-16 Nedap Nv ABSORPTION DETECTION SYSTEM.
US4812822A (en) * 1987-08-31 1989-03-14 Monarch Marking Systems, Inc. Electronic article surveillance system utilizing synchronous integration
NL8900658A (en) * 1989-03-17 1990-10-16 Nedap Nv HIGH-FREQUENT SHOPPING THEFT DETECTION SYSTEM ACCORDING TO THE TRANSMISSION PRINCIPLE.

Also Published As

Publication number Publication date
DE69412872T2 (en) 1999-05-12
ES2121139T3 (en) 1998-11-16
EP0608961A1 (en) 1994-08-03
EP0608961B1 (en) 1998-09-02
DE69412872D1 (en) 1998-10-08

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed