ZA936267B - Synchronised electronic identification system - Google Patents

Synchronised electronic identification system

Info

Publication number
ZA936267B
ZA936267B ZA936267A ZA936267A ZA936267B ZA 936267 B ZA936267 B ZA 936267B ZA 936267 A ZA936267 A ZA 936267A ZA 936267 A ZA936267 A ZA 936267A ZA 936267 B ZA936267 B ZA 936267B
Authority
ZA
South Africa
Prior art keywords
transponder
signal
response signal
interrogation
interrogator
Prior art date
Application number
ZA936267A
Other languages
English (en)
Inventor
Michael John Camille Marsh
Clinton Aiden Van Zyl
Original Assignee
Csir
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 Csir filed Critical Csir
Publication of ZA936267B publication Critical patent/ZA936267B/xx

Links

Classifications

    • 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
    • G06K7/10059—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 transponder driven
    • 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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
    • 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)
  • Radar, Positioning & Navigation (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Molding Of Porous Articles (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Near-Field Transmission Systems (AREA)
  • Alarm Systems (AREA)
ZA936267A 1992-08-26 1993-08-26 Synchronised electronic identification system ZA936267B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA926446 1992-08-26

Publications (1)

Publication Number Publication Date
ZA936267B true ZA936267B (en) 1994-04-14

Family

ID=25582026

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA936267A ZA936267B (en) 1992-08-26 1993-08-26 Synchronised electronic identification system

Country Status (15)

Country Link
US (2) US5557280A (es)
EP (1) EP0585132B1 (es)
JP (1) JP3290003B2 (es)
CN (1) CN1047667C (es)
AT (1) ATE171547T1 (es)
AU (2) AU656088B2 (es)
CA (1) CA2104829C (es)
DE (1) DE69321179T2 (es)
DK (1) DK0585132T3 (es)
ES (1) ES2121954T3 (es)
RU (1) RU2156540C2 (es)
SG (1) SG48262A1 (es)
TW (1) TW297192B (es)
UA (1) UA37182C2 (es)
ZA (1) ZA936267B (es)

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JP3290003B2 (ja) 2002-06-10
UA37182C2 (uk) 2001-05-15
US5699066A (en) 1997-12-16
DE69321179D1 (de) 1998-10-29
AU1653095A (en) 1995-06-29
AU4494093A (en) 1994-03-03
RU2156540C2 (ru) 2000-09-20
CA2104829A1 (en) 1994-02-27
EP0585132B1 (en) 1998-09-23
SG48262A1 (en) 1998-04-17
TW297192B (es) 1997-02-01
DE69321179T2 (de) 1999-05-06
EP0585132A1 (en) 1994-03-02
CN1047667C (zh) 1999-12-22
ATE171547T1 (de) 1998-10-15
AU656088B2 (en) 1995-01-19
DK0585132T3 (da) 1999-06-14
CN1088371A (zh) 1994-06-22
ES2121954T3 (es) 1998-12-16
JPH07311263A (ja) 1995-11-28
US5557280A (en) 1996-09-17
AU670402B2 (en) 1996-07-11
CA2104829C (en) 2004-11-23

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