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1. WO2000044064 - CARRIER WITH ANTENNA FOR RADIO FREQUENCY IDENTIFICATION

Publication Number WO/2000/044064
Publication Date 27.07.2000
International Application No. PCT/US1999/028556
International Filing Date 01.12.1999
Chapter 2 Demand Filed 18.08.2000
IPC
G01S 5/14 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
5Position-fixing by co-ordinating two or more direction or position-line determinations; Position-fixing by co-ordinating two or more distance determinations
02using radio waves
14Determining absolute distances from a plurality of spaced points of known location
G01S 13/75 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
75using transponders powered from received waves, e.g. using passive transponders
G06K 7/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers
G06K 7/08 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
7Methods or arrangements for sensing record carriers
08by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
G06K 19/07 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards
07with integrated circuit chips
H01Q 1/22 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
QANTENNAS, i.e. RADIO AERIALS
1Details of, or arrangements associated with, antennas
12Supports; Mounting means
22by structural association with other equipment or articles
CPC
G01S 13/753
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
75using transponders powered from received waves, e.g. using passive transponders ; , or using passive reflectors
751wherein the responder or reflector radiates a coded signal
753using frequency selective elements, e.g. resonator
G01S 13/756
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
75using transponders powered from received waves, e.g. using passive transponders ; , or using passive reflectors
751wherein the responder or reflector radiates a coded signal
756using a signal generator for modifying the reflectivity of the reflector
G01S 13/758
GPHYSICS
01MEASURING; TESTING
SRADIO 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
13Systems 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
74Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
75using transponders powered from received waves, e.g. using passive transponders ; , or using passive reflectors
751wherein the responder or reflector radiates a coded signal
758using a signal generator powered by the interrogation signal
G06K 19/0701
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards ; also with resonating or responding marks without active components
07with integrated circuit chips
0701at least one of the integrated circuit chips comprising an arrangement for power management
G06K 19/0723
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards ; also with resonating or responding marks without active components
07with integrated circuit chips
0723the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
G06K 19/0724
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
19Record carriers for use with machines and with at least a part designed to carry digital markings
06characterised by the kind of the digital marking, e.g. shape, nature, code
067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards ; also with resonating or responding marks without active components
07with integrated circuit chips
0723the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
0724the arrangement being a circuit for communicating at a plurality of frequencies, e.g. for managing time multiplexed communication over at least two antennas of different types
Applicants
  • RF CODE, INC. [US/US]; 3715 Durazno El Paso, TX 79905, US (AllExceptUS)
  • RODGERS, James, L. [US/US]; US (UsOnly)
  • FOWLER, Billy, C. [US/US]; US (UsOnly)
  • PICARD, Paul, A. [US/US]; US (UsOnly)
  • JAECKS, Howard, K. [US/US]; US (UsOnly)
  • REHMAN, Mohammad, A. [US/US]; US (UsOnly)
  • COULTHARD, John, J. [US/US]; US (UsOnly)
  • LASTINGER, Roc, A. [US/US]; US (UsOnly)
Inventors
  • RODGERS, James, L.; US
  • FOWLER, Billy, C.; US
  • PICARD, Paul, A.; US
  • JAECKS, Howard, K.; US
  • REHMAN, Mohammad, A.; US
  • COULTHARD, John, J.; US
  • LASTINGER, Roc, A.; US
Agents
  • LECHTER, Michael, A. ; Squire, Sanders & Dempsey L.L.P. Suite 2700 Two Renaissance Square 40 North Central Avenue Phoenix, AZ 85004-4440, US
Priority Data
09/233,75520.01.1999US
09/372,27411.08.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CARRIER WITH ANTENNA FOR RADIO FREQUENCY IDENTIFICATION
(FR) SUPPORT MUNI D'UNE ANTENNE PERMETTANT D'IDENTIFIER DES RADIOFREQUENCES
Abstract
(EN)
An object identification system (100) includes a monitor (124) and a plurality of transceivers (114) that communicate over a common medium. The monitor includes a first transmitter (2424), a first receiver (2416), and a processor (2402). Each transceiver includes a resonant circuit (204), a transmitter (210), a receiver (208), and an antenna (202) coupled to the resonant circuit. The processor performs a method for performing transceiver communication (500) that includes the steps of: (a) transmitting (604) from the first transmitter a first frequency (170) for a first duration; (b) after lapse of the first duration, receiving (608) via the first receiver a response signal (172) from at least one of the resonant circuits; (c) determining (510) a second frequency from the received response signal; and (d) performing (512) transceiver communication using the second frequency. Transceivers of the type having a resonant circuit coupled to an antenna, when operating in close proximity to each other, may interfere with the response from a single transceiver by absorbing the energy intended to be received by the transceiver, absorbing the energy transmitted by the transceiver, or altering the resonant frequency of the resonant circuit. By determining the second frequency for transceiver communication, the monitor may establish communication with the single transceiver at a frequency better suited for transferring operative power (1593, 1597) to the transceiver, conducting an interrogation protocol (912, 1140, 1130) for identifying the transceiver, or for data transfer (914, 916, 918, 920).
(FR)
L'invention concerne un système d'identification d'objet (100) qui comprend un moniteur (124) et une pluralité d'émetteurs-récepteurs (114) communiquant via un support commun. Ce moniteur comporte un premier émetteur (2424), un premier récepteur (2416) et un processeur (2402). Chaque émetteur-récepteur comporte un circuit accordé (204), un émetteur (210), un récepteur (208) et une antenne (202) couplée au circuit accordé. Le processeur met en oeuvre un procédé permettant de réaliser une communication par émetteur-récepteur (500) qui consiste à: (a) émettre (604), à partir du premier émetteur, une première fréquence (170) pendant une première durée; (b) une fois cette première durée écoulée, à recevoir (608), via le premier récepteur, un signal de réponse (172) d'au moins un des circuits accordés; (c) à déterminer (510) une seconde fréquence du signal de réponse reçu; et (d) à réaliser (512) une communication par émetteur-récepteur au moyen de la seconde fréquence. Les émetteurs-récepteurs à circuit accordé couplés à une antenne, lorsqu'ils fonctionnent à proximité immédiate les uns des autres, peuvent brouiller la réponse d'un seul émetteur-récepteur en absorbant l'énergie destinée à être reçue par l'émetteur-récepteur, en absorbant l'énergie émise par l'émetteur ou en modifiant la fréquence de résonance du circuit accordé. En déterminant la seconde fréquence permettant de réaliser une communication par émetteur-récepteur, le moniteur peut établir une communication avec le seul émetteur-récepteur à une fréquence mieux appropriée au transfert de la puissance de fonctionnement (1593, 1597) à l'émetteur-récepteur, à la mise en oeuvre d'un protocole d'interrogation (912, 1140, 1130) permettant d'identifier l'émetteur-récepteur ou au transfert des données (914, 916, 918, 920).
Also published as
Latest bibliographic data on file with the International Bureau