JPS57501550A - - Google Patents

Info

Publication number
JPS57501550A
JPS57501550A JP56503332A JP50333281A JPS57501550A JP S57501550 A JPS57501550 A JP S57501550A JP 56503332 A JP56503332 A JP 56503332A JP 50333281 A JP50333281 A JP 50333281A JP S57501550 A JPS57501550 A JP S57501550A
Authority
JP
Japan
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
Application number
JP56503332A
Other languages
Japanese (ja)
Other versions
JPH0353678B2 (en
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 JPS57501550A publication Critical patent/JPS57501550A/ja
Publication of JPH0353678B2 publication Critical patent/JPH0353678B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B13/2422—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
    • G08B13/2465—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)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Burglar Alarm Systems (AREA)
JP56503332A 1980-10-09 1981-10-01 Expired - Lifetime JPH0353678B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19557280A 1980-10-09 1980-10-09

Publications (2)

Publication Number Publication Date
JPS57501550A true JPS57501550A (en) 1982-08-26
JPH0353678B2 JPH0353678B2 (en) 1991-08-15

Family

ID=22721923

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56503332A Expired - Lifetime JPH0353678B2 (en) 1980-10-09 1981-10-01

Country Status (12)

Country Link
EP (1) EP0062056A4 (en)
JP (1) JPH0353678B2 (en)
AU (1) AU552568B2 (en)
BR (1) BR8108829A (en)
CA (1) CA1190970A (en)
DK (1) DK161172C (en)
ES (1) ES506117A0 (en)
FI (1) FI73532C (en)
IT (1) IT1142881B (en)
NZ (1) NZ198497A (en)
WO (1) WO1982001437A1 (en)
ZA (1) ZA816937B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0091581B1 (en) * 1982-04-12 1988-05-18 Ici Americas Inc. Crossed beam high frequency anti-theft system
CA1236542A (en) * 1983-08-02 1988-05-10 Harold B. Williams Electronic article surveillance system having microstrip antennas
US5349332A (en) * 1992-10-13 1994-09-20 Sensormatic Electronics Corportion EAS system with requency hopping
US5347280A (en) * 1993-07-02 1994-09-13 Texas Instruments Deutschland Gmbh Frequency diversity transponder arrangement
US5831530A (en) * 1994-12-30 1998-11-03 Lace Effect, Llc Anti-theft vehicle system
US5798693A (en) 1995-06-07 1998-08-25 Engellenner; Thomas J. Electronic locating systems
US8358209B2 (en) * 2005-06-03 2013-01-22 Sensomatic Electronics, LLC Techniques for detecting RFID tags in electronic article surveillance systems using frequency mixing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53135600A (en) * 1977-04-28 1978-11-27 Parmeko Ltd Method of supervising position of reception*reeradiation element located in surveyed zone* and reception*reeradiation element for said method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO126975B (en) * 1967-03-30 1973-04-16 John Welsh
US3631484A (en) * 1969-07-30 1971-12-28 Microlab Fxr Harmonic detection system
US3707711A (en) * 1970-04-02 1972-12-26 Peter Harold Cole Electronic surveillance system
US3895368A (en) * 1972-08-09 1975-07-15 Sensormatic Electronics Corp Surveillance system and method utilizing both electrostatic and electromagnetic fields
GB1586069A (en) * 1976-11-15 1981-03-18 Nedap Nv Detection systems
US4139844A (en) * 1977-10-07 1979-02-13 Sensormatic Electronics Corporation Surveillance method and system with electromagnetic carrier and plural range limiting signals
ZA7994B (en) * 1978-01-11 1980-01-30 Tag Radionics Ltd Presence sensing system
US4249167A (en) * 1979-06-05 1981-02-03 Magnavox Government And Industrial Electronics Company Apparatus and method for theft detection system having different frequencies

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53135600A (en) * 1977-04-28 1978-11-27 Parmeko Ltd Method of supervising position of reception*reeradiation element located in surveyed zone* and reception*reeradiation element for said method

Also Published As

Publication number Publication date
DK161172C (en) 1991-11-25
IT8149451A0 (en) 1981-10-08
FI73532C (en) 1987-10-09
CA1190970A (en) 1985-07-23
AU7721981A (en) 1982-05-11
DK161172B (en) 1991-06-03
AU552568B2 (en) 1986-06-05
WO1982001437A1 (en) 1982-04-29
EP0062056A4 (en) 1985-06-06
EP0062056A1 (en) 1982-10-13
ZA816937B (en) 1982-11-24
JPH0353678B2 (en) 1991-08-15
IT1142881B (en) 1986-10-15
ES8207351A1 (en) 1982-09-01
NZ198497A (en) 1985-08-30
FI73532B (en) 1987-06-30
BR8108829A (en) 1982-08-24
DK258082A (en) 1982-06-09
FI821956A0 (en) 1982-06-02
ES506117A0 (en) 1982-09-01

Similar Documents

Publication Publication Date Title
FR2478909B1 (en)
FR2474803B1 (en)
FR2476235B1 (en)
FR2476582B1 (en)
FR2478228B1 (en)
FR2477316B1 (en)
FR2476922B1 (en)
FR2477131B1 (en)
FR2477888B1 (en)
FR2478244B1 (en)
FR2477641B1 (en)
FR2478750B1 (en)
GR74040B (en)
FR2475358B3 (en)
FR2475091B1 (en)
FR2476696B1 (en)
FR2477873B1 (en)
FR2477785B1 (en)
JPS5731513U (en)
FR2474668B1 (en)
JPS5717738U (en)
FR2475509B1 (en)
FR2478908B1 (en)
FR2477626B1 (en)
FR2475882B1 (en)