DE69908957D1 - System zur detektion und rf-identifizierung - Google Patents

System zur detektion und rf-identifizierung

Info

Publication number
DE69908957D1
DE69908957D1 DE69908957T DE69908957T DE69908957D1 DE 69908957 D1 DE69908957 D1 DE 69908957D1 DE 69908957 T DE69908957 T DE 69908957T DE 69908957 T DE69908957 T DE 69908957T DE 69908957 D1 DE69908957 D1 DE 69908957D1
Authority
DE
Germany
Prior art keywords
tag
rfid
detector
range
detected
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 - Fee Related
Application number
DE69908957T
Other languages
English (en)
Other versions
DE69908957T2 (de
Inventor
William Whitesmith
John Palmer
Edward Ball
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tagtec Ltd
Original Assignee
Tagtec Ltd
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 Tagtec Ltd filed Critical Tagtec Ltd
Publication of DE69908957D1 publication Critical patent/DE69908957D1/de
Application granted granted Critical
Publication of DE69908957T2 publication Critical patent/DE69908957T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G08B13/2451—Specific applications combined with EAS
    • G08B13/2462—Asset location systems combined with EAS
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • G01S13/878—Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
    • G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
    • G06K7/10039—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot interrogator driven, i.e. synchronous

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Artificial Intelligence (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Security & Cryptography (AREA)
  • Burglar Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Eye Examination Apparatus (AREA)
DE69908957T 1998-09-28 1999-09-28 System zur detektion und rf-identifizierung Expired - Fee Related DE69908957T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9821046 1998-09-28
GBGB9821046.1A GB9821046D0 (en) 1998-09-28 1998-09-28 Detection system
PCT/GB1999/003213 WO2000019235A1 (en) 1998-09-28 1999-09-28 Rfid detection system

Publications (2)

Publication Number Publication Date
DE69908957D1 true DE69908957D1 (de) 2003-07-24
DE69908957T2 DE69908957T2 (de) 2004-05-19

Family

ID=10839570

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69908957T Expired - Fee Related DE69908957T2 (de) 1998-09-28 1999-09-28 System zur detektion und rf-identifizierung

Country Status (8)

Country Link
US (1) US6577238B1 (de)
EP (1) EP1112512B1 (de)
JP (1) JP2002525640A (de)
AT (1) ATE243326T1 (de)
AU (1) AU6106099A (de)
DE (1) DE69908957T2 (de)
GB (1) GB9821046D0 (de)
WO (1) WO2000019235A1 (de)

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GB9821046D0 (en) 1998-11-18
AU6106099A (en) 2000-04-17
EP1112512B1 (de) 2003-06-18
JP2002525640A (ja) 2002-08-13
WO2000019235A1 (en) 2000-04-06
US6577238B1 (en) 2003-06-10
DE69908957T2 (de) 2004-05-19
ATE243326T1 (de) 2003-07-15

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