JPH0354392B2 - - Google Patents

Info

Publication number
JPH0354392B2
JPH0354392B2 JP57163282A JP16328282A JPH0354392B2 JP H0354392 B2 JPH0354392 B2 JP H0354392B2 JP 57163282 A JP57163282 A JP 57163282A JP 16328282 A JP16328282 A JP 16328282A JP H0354392 B2 JPH0354392 B2 JP H0354392B2
Authority
JP
Japan
Prior art keywords
signal
marker
transmitting
during
reception period
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.)
Expired - Lifetime
Application number
JP57163282A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58121495A (ja
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 filed Critical
Publication of JPS58121495A publication Critical patent/JPS58121495A/ja
Publication of JPH0354392B2 publication Critical patent/JPH0354392B2/ja
Granted legal-status Critical Current

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
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • 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
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Container Filling Or Packaging Operations (AREA)
JP57163282A 1981-10-05 1982-09-21 通過する物品の探知装置 Granted JPS58121495A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA387303 1981-10-05
CA000387303A CA1180788A (en) 1981-10-05 1981-10-05 System for registrating a passing article

Publications (2)

Publication Number Publication Date
JPS58121495A JPS58121495A (ja) 1983-07-19
JPH0354392B2 true JPH0354392B2 (enrdf_load_stackoverflow) 1991-08-20

Family

ID=4121088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57163282A Granted JPS58121495A (ja) 1981-10-05 1982-09-21 通過する物品の探知装置

Country Status (7)

Country Link
JP (1) JPS58121495A (enrdf_load_stackoverflow)
AU (1) AU535114B2 (enrdf_load_stackoverflow)
CA (1) CA1180788A (enrdf_load_stackoverflow)
ES (1) ES515888A0 (enrdf_load_stackoverflow)
NL (1) NL8203849A (enrdf_load_stackoverflow)
NO (1) NO156349C (enrdf_load_stackoverflow)
ZA (1) ZA826195B (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4509039A (en) * 1983-07-05 1985-04-02 Minnesota Mining And Manufacturing Company Shielded, closely spaced transmit-receiver antennas for electronic article surveillance system
NL8803170A (nl) * 1988-12-27 1990-07-16 Nedap Nv Identificatiesysteem.
US5382780A (en) * 1993-10-01 1995-01-17 Duncan Industries Parking Control Systems Corp. Portable time metering device
JPH07263935A (ja) * 1994-03-24 1995-10-13 Hochiki Corp アンテナ装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5645200B2 (enrdf_load_stackoverflow) * 1973-03-10 1981-10-24
US4243980A (en) * 1978-02-17 1981-01-06 Lichtblau G J Antenna system for electronic security installations

Also Published As

Publication number Publication date
JPS58121495A (ja) 1983-07-19
AU535114B2 (en) 1984-03-01
ZA826195B (en) 1983-07-27
NL8203849A (nl) 1983-05-02
NO823180L (no) 1983-04-06
ES8306264A1 (es) 1983-06-01
AU8867082A (en) 1983-04-14
NO156349B (no) 1987-05-25
NO156349C (no) 1987-09-02
CA1180788A (en) 1985-01-08
ES515888A0 (es) 1983-06-01

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