BR7406375D0 - DISCRIMINATION CIRCUIT FOR NOISE REJECTION AND ELECTRONIC SAFETY SYSTEM - Google Patents

DISCRIMINATION CIRCUIT FOR NOISE REJECTION AND ELECTRONIC SAFETY SYSTEM

Info

Publication number
BR7406375D0
BR7406375D0 BR6375/74A BR637574A BR7406375D0 BR 7406375 D0 BR7406375 D0 BR 7406375D0 BR 6375/74 A BR6375/74 A BR 6375/74A BR 637574 A BR637574 A BR 637574A BR 7406375 D0 BR7406375 D0 BR 7406375D0
Authority
BR
Brazil
Prior art keywords
safety system
discrimination circuit
noise rejection
electronic safety
rejection
Prior art date
Application number
BR6375/74A
Other languages
Portuguese (pt)
Inventor
G Lichtblau
Original Assignee
G Lichtblau
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 G Lichtblau filed Critical G Lichtblau
Publication of BR7406375D0 publication Critical patent/BR7406375D0/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
    • G08B13/2465—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

  • 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)
  • Radar Systems Or Details Thereof (AREA)
  • Credit Cards Or The Like (AREA)
  • Geophysics And Detection Of Objects (AREA)
BR6375/74A 1973-08-20 1974-08-02 DISCRIMINATION CIRCUIT FOR NOISE REJECTION AND ELECTRONIC SAFETY SYSTEM BR7406375D0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00389728A US3828337A (en) 1973-08-20 1973-08-20 Noise rejection circuitry

Publications (1)

Publication Number Publication Date
BR7406375D0 true BR7406375D0 (en) 1975-06-03

Family

ID=23539479

Family Applications (1)

Application Number Title Priority Date Filing Date
BR6375/74A BR7406375D0 (en) 1973-08-20 1974-08-02 DISCRIMINATION CIRCUIT FOR NOISE REJECTION AND ELECTRONIC SAFETY SYSTEM

Country Status (9)

Country Link
US (1) US3828337A (en)
JP (1) JPS533913B2 (en)
BR (1) BR7406375D0 (en)
CA (1) CA1033027A (en)
DE (1) DE2438218C2 (en)
FR (1) FR2241837B1 (en)
GB (1) GB1484353A (en)
IT (1) IT1011583B (en)
ZA (1) ZA744889B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223830A (en) * 1978-08-18 1980-09-23 Walton Charles A Identification system
US4236068A (en) * 1979-03-29 1980-11-25 Walton Charles A Personal identification and signaling system
JPS57124548A (en) * 1981-01-26 1982-08-03 Nippon Koki Kk Casting method
US4429302A (en) * 1981-10-08 1984-01-31 I. D. Engineering, Inc. Electronic security system with noise rejection
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
US4728938A (en) * 1986-01-10 1988-03-01 Checkpoint Systems, Inc. Security tag deactivation system
US4779077A (en) * 1987-04-13 1988-10-18 Lichtblau G J Continuously armed high reliability pulse train processor
EP0390779A4 (en) * 1988-06-20 1991-04-24 George J. Lichtblau Continuously armed high reliability pulse train processor
DE69034050T2 (en) 1989-10-31 2003-12-04 Checkpoint Systems, Inc. Electronic goods surveillance system labels
US5081445A (en) * 1991-03-22 1992-01-14 Checkpoint Systems, Inc. Method for tagging articles used in conjunction with an electronic article surveillance system, and tags or labels useful in connection therewith
GB2282720A (en) * 1993-09-10 1995-04-12 Thomson Consumer Electronics Circuit for synchronizing a microprocessor in a TV receiver
US5508684A (en) * 1995-03-02 1996-04-16 Becker; Richard S. Article tag
US5798693A (en) * 1995-06-07 1998-08-25 Engellenner; Thomas J. Electronic locating systems
US5812065A (en) 1995-08-14 1998-09-22 International Business Machines Corporation Modulation of the resonant frequency of a circuit using an energy field
US7123129B1 (en) 1995-08-14 2006-10-17 Intermec Ip Corp. Modulation of the resonant frequency of a circuit using an energy field
US7002475B2 (en) * 1997-12-31 2006-02-21 Intermec Ip Corp. Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag
CA2251326C (en) * 1996-04-10 2003-06-17 Sentry Technology Corporation Electronic article surveillance system
US5909178A (en) * 1997-11-28 1999-06-01 Sensormatic Electronics Corporation Signal detection in high noise environments

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115622A (en) * 1958-10-15 1963-12-24 Polard Electronics Corp Panoramic scanning counter
US3500373A (en) * 1966-05-06 1970-03-10 Nat Bank Of North America The Method and apparatus for article theft detection
US3521280A (en) * 1969-01-16 1970-07-21 Gen Res Corp Coded labels
US3624631A (en) * 1970-04-27 1971-11-30 Sanders Associates Inc Pilferage control system
US3696379A (en) * 1970-12-02 1972-10-03 Knogo Corp Apparatus for article theft detection
US3752960A (en) * 1971-12-27 1973-08-14 C Walton Electronic identification & recognition system

Also Published As

Publication number Publication date
ZA744889B (en) 1975-08-27
JPS5051300A (en) 1975-05-08
GB1484353A (en) 1977-09-01
IT1011583B (en) 1977-02-10
JPS533913B2 (en) 1978-02-10
US3828337A (en) 1974-08-06
DE2438218A1 (en) 1975-02-27
FR2241837B1 (en) 1978-11-24
FR2241837A1 (en) 1975-03-21
CA1033027A (en) 1978-06-13
DE2438218C2 (en) 1985-08-14

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