BR7406375D0 - DISCRIMINATION CIRCUIT FOR NOISE REJECTION AND ELECTRONIC SAFETY SYSTEM - Google Patents
DISCRIMINATION CIRCUIT FOR NOISE REJECTION AND ELECTRONIC SAFETY SYSTEMInfo
- 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
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)
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)
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)
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 |
-
1973
- 1973-08-20 US US00389728A patent/US3828337A/en not_active Expired - Lifetime
-
1974
- 1974-03-14 IT IT67771/74A patent/IT1011583B/en active
- 1974-07-23 CA CA205,463A patent/CA1033027A/en not_active Expired
- 1974-07-31 ZA ZA00744889A patent/ZA744889B/en unknown
- 1974-08-02 BR BR6375/74A patent/BR7406375D0/en unknown
- 1974-08-05 FR FR7427130A patent/FR2241837B1/fr not_active Expired
- 1974-08-08 DE DE2438218A patent/DE2438218C2/en not_active Expired
- 1974-08-15 GB GB36028/74A patent/GB1484353A/en not_active Expired
- 1974-08-19 JP JP9432874A patent/JPS533913B2/ja not_active Expired
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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