DE69516568D1 - Bereichserweitertes drahtloses Übertragungssystem mit modulierter Rückstrahlung - Google Patents

Bereichserweitertes drahtloses Übertragungssystem mit modulierter Rückstrahlung

Info

Publication number
DE69516568D1
DE69516568D1 DE69516568T DE69516568T DE69516568D1 DE 69516568 D1 DE69516568 D1 DE 69516568D1 DE 69516568 T DE69516568 T DE 69516568T DE 69516568 T DE69516568 T DE 69516568T DE 69516568 D1 DE69516568 D1 DE 69516568D1
Authority
DE
Germany
Prior art keywords
transmission system
wireless transmission
extended wireless
modulated reflection
modulated
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 - Lifetime
Application number
DE69516568T
Other languages
English (en)
Other versions
DE69516568T2 (de
Inventor
James Gifford Evans
Giovanni Vannucci
Anthony R Shober
Stephen A Wilkus
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.)
NCR International Inc
Original Assignee
NCR International Inc
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 NCR International Inc filed Critical NCR International Inc
Application granted granted Critical
Publication of DE69516568D1 publication Critical patent/DE69516568D1/de
Publication of DE69516568T2 publication Critical patent/DE69516568T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
    • G06K7/10069—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 frequency domain, e.g. by hopping from one frequency to the other
    • 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
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/825—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted with exchange of information between interrogator and responder
    • 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
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Physics & Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Near-Field Transmission Systems (AREA)
  • Radio Transmission System (AREA)
DE69516568T 1994-03-04 1995-02-22 Bereichserweitertes drahtloses Übertragungssystem mit modulierter Rückstrahlung Expired - Lifetime DE69516568T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20607594A 1994-03-04 1994-03-04

Publications (2)

Publication Number Publication Date
DE69516568D1 true DE69516568D1 (de) 2000-06-08
DE69516568T2 DE69516568T2 (de) 2001-01-04

Family

ID=22764874

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69516568T Expired - Lifetime DE69516568T2 (de) 1994-03-04 1995-02-22 Bereichserweitertes drahtloses Übertragungssystem mit modulierter Rückstrahlung

Country Status (5)

Country Link
US (3) US5640683A (de)
EP (1) EP0670558B1 (de)
JP (1) JP3690832B2 (de)
CA (1) CA2143144C (de)
DE (1) DE69516568T2 (de)

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US10873363B2 (en) 2015-08-12 2020-12-22 University Of Washington Backscatter devices and network systems incorporating backscatter devices
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Also Published As

Publication number Publication date
US5873025A (en) 1999-02-16
US5640683A (en) 1997-06-17
DE69516568T2 (de) 2001-01-04
CA2143144C (en) 1999-09-28
US6100790A (en) 2000-08-08
EP0670558A3 (de) 1997-04-23
EP0670558B1 (de) 2000-05-03
CA2143144A1 (en) 1995-09-04
EP0670558A2 (de) 1995-09-06
JP3690832B2 (ja) 2005-08-31
JPH07283755A (ja) 1995-10-27

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