ZA734480B - Surveillance system and method utilizing both electrostatic and electromagnetic fields - Google Patents
Surveillance system and method utilizing both electrostatic and electromagnetic fieldsInfo
- Publication number
- ZA734480B ZA734480B ZA734480A ZA734480A ZA734480B ZA 734480 B ZA734480 B ZA 734480B ZA 734480 A ZA734480 A ZA 734480A ZA 734480 A ZA734480 A ZA 734480A ZA 734480 B ZA734480 B ZA 734480B
- Authority
- ZA
- South Africa
- Prior art keywords
- electrostatic
- electromagnetic fields
- surveillance system
- method utilizing
- surveillance
- 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
- G08B13/2422—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)
- Geophysics And Detection Of Objects (AREA)
- Radar Systems Or Details Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US279097A US3895368A (en) | 1972-08-09 | 1972-08-09 | Surveillance system and method utilizing both electrostatic and electromagnetic fields |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA734480B true ZA734480B (en) | 1974-06-26 |
Family
ID=23067622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA734480A ZA734480B (en) | 1972-08-09 | 1973-07-09 | Surveillance system and method utilizing both electrostatic and electromagnetic fields |
Country Status (12)
Country | Link |
---|---|
US (1) | US3895368A (en) |
JP (1) | JPS5724598B2 (en) |
BE (1) | BE801202A (en) |
BR (1) | BR7306051D0 (en) |
CA (1) | CA1003522A (en) |
DE (1) | DE2316411C3 (en) |
ES (1) | ES413541A1 (en) |
FR (1) | FR2195812B1 (en) |
GB (1) | GB1406925A (en) |
IT (1) | IT982964B (en) |
NL (1) | NL7305216A (en) |
ZA (1) | ZA734480B (en) |
Families Citing this family (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4069472A (en) * | 1975-12-25 | 1978-01-17 | Tokyo Shibaura Electric Co., Ltd. | Foreground subject-identifying apparatus |
US4212002A (en) * | 1976-05-24 | 1980-07-08 | Williamson Robert D | Method and apparatus for selective electronic surveillance |
US4206453A (en) * | 1976-05-24 | 1980-06-03 | Williamson Robert D | Method and apparatus for electronic surveillance |
US4087802A (en) * | 1976-05-24 | 1978-05-02 | Williamson Robert D | Method and apparatus for electronic surveillance of precisely defined control zone |
NL7708012A (en) * | 1977-07-19 | 1979-01-23 | Nedap Nv | DETECTION SYSTEM. |
US4139844A (en) * | 1977-10-07 | 1979-02-13 | Sensormatic Electronics Corporation | Surveillance method and system with electromagnetic carrier and plural range limiting signals |
FR2416514A1 (en) * | 1978-02-03 | 1979-08-31 | Williamson Robert | Electronic surveillance of precisely defined control zone - using HF generator projecting wave to establish first field and FM generator for second field |
DE2833509A1 (en) * | 1978-07-31 | 1980-02-14 | Siemens Ag | Identifying and locating device for objects and persons - has mark on object interrogated and received signal is processed and evaluated |
US4254868A (en) * | 1979-02-05 | 1981-03-10 | Sensormatic Electronics Corporation | Enclosure for a security tag and extraction implement |
EP0020062B1 (en) * | 1979-05-18 | 1984-03-07 | Parmeko Limited | Method and surveillance system for detecting the presence of an e.m. wave receptor reradiator |
US4281321A (en) * | 1980-06-09 | 1981-07-28 | Sensormatic Electronics Corporation | Surveillance system employing a floor mat radiator |
US4471344A (en) * | 1980-10-09 | 1984-09-11 | Ici Americas Inc. | Dual frequency anti-theft system |
CA1190970A (en) * | 1980-10-09 | 1985-07-23 | Harold B. Williams | Dual frequency anti-theft system |
JPS5768070U (en) * | 1980-10-09 | 1982-04-23 | ||
US4430645A (en) * | 1981-04-07 | 1984-02-07 | Sensormatic Electronics Corporation | Surveillance system employing a dual function floor mat radiator |
US4413254A (en) * | 1981-09-04 | 1983-11-01 | Sensormatic Electronics Corporation | Combined radio and magnetic energy responsive surveillance marker and system |
USRE32627E (en) * | 1981-09-10 | 1988-03-22 | Sensormatic Electronics Corporation | Electrical surveillance apparatus with moveable antenna elements |
US4394645A (en) * | 1981-09-10 | 1983-07-19 | Sensormatic Electronics Corporation | Electrical surveillance apparatus with moveable antenna elements |
NL8200138A (en) * | 1982-01-14 | 1983-08-01 | Nedap Nv | DETECTION SYSTEM. |
US4472641A (en) * | 1983-01-28 | 1984-09-18 | Westinghouse Electric Corp. | Power supply apparatus |
US4642640A (en) * | 1983-04-25 | 1987-02-10 | Sensormatic Electronics Corporation | Signal receptor-reradiator and surveillance tag using the same |
DE3472019D1 (en) * | 1983-08-01 | 1988-07-14 | Ici America Inc | Electronic article surveillance system |
CA1236542A (en) * | 1983-08-02 | 1988-05-10 | Harold B. Williams | Electronic article surveillance system having microstrip antennas |
US4679035A (en) * | 1985-07-30 | 1987-07-07 | Sensormatic Electronics Corporation | Tri-signal electromagnetic article surveillance system |
US4736207A (en) * | 1986-01-31 | 1988-04-05 | Sensormatic Electronics Corporation | Tag device and method for electronic article surveillance |
CA1335676C (en) * | 1988-01-14 | 1995-05-23 | Akira Iga | Portable data transmitter device and a system using the same |
FR2645309B1 (en) * | 1989-04-04 | 1991-06-07 | Usil Flandres Artois | DEVICE FOR DETECTING THE PASSAGE OF AT LEAST ONE MOBILE AT AT LEAST A DETERMINED POINT OF ITS MOVEMENT |
US5099227A (en) * | 1989-07-18 | 1992-03-24 | Indala Corporation | Proximity detecting apparatus |
US5109217A (en) * | 1990-08-09 | 1992-04-28 | Sensormatic Electronics Corporation | Method and apparatus for enhancing detection of electronic article surveillance tags in close proximity to electrically conductive objects |
US5206626A (en) * | 1991-12-24 | 1993-04-27 | Knogo Corporation | Stabilized article surveillance responder |
US5241923A (en) * | 1992-07-23 | 1993-09-07 | Pole/Zero Corporation | Transponder control of animal whereabouts |
US5349332A (en) * | 1992-10-13 | 1994-09-20 | Sensormatic Electronics Corportion | EAS system with requency hopping |
GB2306080B (en) * | 1995-10-10 | 2000-02-16 | Roke Manor Research | Improvements in or relating to detection systems |
RU2099789C1 (en) * | 1996-07-30 | 1997-12-20 | Кулагин Николай Павлович | Method detecting intrusion of protected space and gear for its realization |
US6064308A (en) * | 1996-10-25 | 2000-05-16 | Pole/Zero Corporation | RF signaling system and system for controlling the whereabouts of animals using same |
US6446049B1 (en) | 1996-10-25 | 2002-09-03 | Pole/Zero Corporation | Method and apparatus for transmitting a digital information signal and vending system incorporating same |
US5990791A (en) * | 1997-10-22 | 1999-11-23 | William B. Spargur | Anti-theft detection system |
US6166643A (en) * | 1997-10-23 | 2000-12-26 | Janning; Joseph J. | Method and apparatus for controlling the whereabouts of an animal |
DE19754936A1 (en) | 1997-12-10 | 1999-07-01 | Wegmann & Co Gmbh | Sealing and guiding device for highly dynamically accelerated, distance-effective protective elements |
JPH11283178A (en) * | 1998-03-27 | 1999-10-15 | Matsushita Electric Ind Co Ltd | Electric resonance discriminator, electric resonance discriminator detecting device, and traffic system |
ATE271244T1 (en) | 1999-10-08 | 2004-07-15 | Activerf Ltd | IMPROVEMENTS RELATED TO SAFETY DEVICES |
GB9923682D0 (en) * | 1999-10-08 | 1999-12-08 | Active Rf Limited | Improvements relating to security-pushout prevention |
US7395548B2 (en) * | 2001-07-26 | 2008-07-01 | Comsonics, Inc. | System and method for signal validation and leakage detection |
US6752837B2 (en) | 2002-06-28 | 2004-06-22 | Hewlett-Packard Development Company, L.P. | Security tags with a reversible optical indicator |
GB2423402B (en) | 2002-07-19 | 2007-01-03 | Gatekeeper Systems | Improvements relating to security and electronic article surveillance |
US7034687B2 (en) * | 2004-04-29 | 2006-04-25 | Comm-Engines | Error-avoiding anti-theft surveillance system |
JP2006287817A (en) * | 2005-04-04 | 2006-10-19 | Tokyo Electron Ltd | Microwave generating device, microwave supplying device, plasma treatment device and microwave generating method |
US20070296609A1 (en) * | 2006-06-21 | 2007-12-27 | Dave Thomas | Method and apparatus for object recognition and warning system of a primary vehicle for nearby vehicles |
US8350720B2 (en) * | 2006-06-21 | 2013-01-08 | Dave Thomas | Method and apparatus for object recognition and warning system of a primary vehicle for nearby vehicles |
US20090072995A1 (en) * | 2006-06-21 | 2009-03-19 | Dave Thomas | Method and apparatus for transmitting information between a primary vehicle and a secondary vehicle |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3631442A (en) * | 1968-03-22 | 1971-12-28 | Robert E Fearon | Anti-shoplifting system |
US3707711A (en) * | 1970-04-02 | 1972-12-26 | Peter Harold Cole | Electronic surveillance system |
US3711848A (en) * | 1971-02-10 | 1973-01-16 | I D Eng Inc | Method of and apparatus for the detection of stolen articles |
US3740742A (en) * | 1971-05-11 | 1973-06-19 | T Thompson | Method and apparatus for actuating an electric circuit |
US3806905A (en) * | 1971-09-08 | 1974-04-23 | Sperry Rand Corp | Transducer and condition monitor |
-
1972
- 1972-08-09 US US279097A patent/US3895368A/en not_active Expired - Lifetime
-
1973
- 1973-04-02 DE DE2316411A patent/DE2316411C3/en not_active Expired
- 1973-04-04 IT IT49239/73A patent/IT982964B/en active
- 1973-04-10 ES ES413541A patent/ES413541A1/en not_active Expired
- 1973-04-13 NL NL7305216A patent/NL7305216A/xx not_active Application Discontinuation
- 1973-05-04 GB GB2143473A patent/GB1406925A/en not_active Expired
- 1973-06-07 FR FR7320784A patent/FR2195812B1/fr not_active Expired
- 1973-06-20 BE BE132513A patent/BE801202A/en not_active IP Right Cessation
- 1973-07-04 CA CA175,580A patent/CA1003522A/en not_active Expired
- 1973-07-09 ZA ZA734480A patent/ZA734480B/en unknown
- 1973-07-19 JP JP8055073A patent/JPS5724598B2/ja not_active Expired
- 1973-08-08 BR BR6051/73A patent/BR7306051D0/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2195812B1 (en) | 1978-03-10 |
US3895368A (en) | 1975-07-15 |
ES413541A1 (en) | 1976-02-01 |
JPS5724598B2 (en) | 1982-05-25 |
BE801202A (en) | 1973-10-15 |
FR2195812A1 (en) | 1974-03-08 |
GB1406925A (en) | 1975-09-17 |
DE2316411B2 (en) | 1979-08-09 |
BR7306051D0 (en) | 1974-07-11 |
IT982964B (en) | 1974-10-21 |
JPS4945593A (en) | 1974-05-01 |
NL7305216A (en) | 1974-02-12 |
CA1003522A (en) | 1977-01-11 |
DE2316411C3 (en) | 1980-04-17 |
DE2316411A1 (en) | 1974-02-28 |
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