US20060226955A1 - Identification device and identification system - Google Patents

Identification device and identification system Download PDF

Info

Publication number
US20060226955A1
US20060226955A1 US10/525,408 US52540803A US2006226955A1 US 20060226955 A1 US20060226955 A1 US 20060226955A1 US 52540803 A US52540803 A US 52540803A US 2006226955 A1 US2006226955 A1 US 2006226955A1
Authority
US
United States
Prior art keywords
identification device
state
current
signal
probability
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.)
Abandoned
Application number
US10/525,408
Other languages
English (en)
Inventor
Graham Murdoch
Stuart Littlechild
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.)
Magellan Technology Pty Ltd
Original Assignee
Magellan Technology Pty 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 Magellan Technology Pty Ltd filed Critical Magellan Technology Pty Ltd
Assigned to MAGELLAN TECHNOLOGY PTY LIMITED reassignment MAGELLAN TECHNOLOGY PTY LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LITTLECHILD, STUART COLIN, MURDOCH, GRAHAM ALEXANDER MUNRO
Priority to US11/463,960 priority Critical patent/US20060290475A1/en
Publication of US20060226955A1 publication Critical patent/US20060226955A1/en
Priority to US13/891,681 priority patent/US20130249674A1/en
Priority to US14/220,205 priority patent/US9165171B2/en
Priority to US14/863,499 priority patent/US9524457B2/en
Assigned to PDS GAMING CORPORATION reassignment PDS GAMING CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PJM GAMING PTY LTN A.C.N.154 145 178, WALKER DIGITAL TABLE SYSTEMS, LLC
Assigned to PDS GAMING LLC reassignment PDS GAMING LLC SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PJM GAMING PTY LTN A.C.N. 154 145 178, WALKER DIGITAL TABLE SYSTEMS, LLC
Assigned to PDS GAMING LLC reassignment PDS GAMING LLC SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PJM GAMING PTY LTN A.C.N. 154 145 178, WALKER DIGITAL TABLE SYSTEMS, LLC
Assigned to PDS GAMING LLC reassignment PDS GAMING LLC SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PJM GAMING PTY LTN A.C.N. 154 145 178, WALKER DIGITAL TABLE SYSTEMS, LLC
Abandoned legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record 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
    • G06K19/07—Record 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 with integrated circuit chips
    • G06K19/0701—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0712—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of triggering distinct operating modes or functions dependent on the strength of an energy or interrogation field in the proximity of the record carrier
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record 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
    • G06K19/07—Record 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 with integrated circuit chips
    • G06K19/0701—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record 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
    • G06K19/07—Record 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 with integrated circuit chips
    • G06K19/0701—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0707—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation
    • G06K19/0708—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation the source being electromagnetic or magnetic
    • G06K19/0709—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement being capable of collecting energy from external energy sources, e.g. thermocouples, vibration, electromagnetic radiation the source being electromagnetic or magnetic the source being an interrogation field
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record 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
    • G06K19/07—Record 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 with integrated circuit chips
    • G06K19/0701—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management
    • G06K19/0715—Record 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 with integrated circuit chips at least one of the integrated circuit chips comprising an arrangement for power management the arrangement including means to regulate power transfer to the integrated circuit
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record 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
    • G06K19/07—Record 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 with integrated circuit chips
    • G06K19/0723—Record 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 with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • 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
    • 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
    • G06K7/10366—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 the interrogation device being adapted for miscellaneous applications

Definitions

  • the invention has been developed primarily as a radio frequency identification (“RFID”) tag for a parcel, document, or postal handling system and will be described hereinafter with reference to these applications.
  • RFID radio frequency identification
  • the invention is not limited to those particular fields of use and is also suitable to inventory management, stock control systems, and other applications.
  • an object such as a second tag with a second coil
  • a radio frequency identification (“RFID”) device including:
  • a transceiver connected to the antenna and being responsive to the interrogation signal
  • the transceiver toggles between a first state and a second state, wherein the current drawn by the transceiver during the first state is greater than the current drawn during the second state. More preferably, the transceiver selects the second state more frequently than the first state. Even more preferably, the probability of selecting the second state is at least twice the probability of selecting the first state.
  • the transceiver has an operating cycle wherein, during that cycle, the transceiver is in either the first or the second state.
  • the transceiver selects the first state with a probability of less than 1 ⁇ 2. More preferably, the probability is less than 1 ⁇ 4. Even more preferably, the probability is less than or equal to 1/16. Accordingly, the first state is not necessarily selected in each cycle.
  • the interrogation signal is generated in a predetermined area by an interrogator.
  • the device is maintained within the signal field for more than one cycle. More preferably, the device is maintained within the field for at least the number of cycles equal to the reciprocal of the probability of the first state being selected.
  • the selection of the first state and the second state is based upon a predetermined algorithm.
  • An example of a preferred algorithm is a random or a pseudo-random number.
  • the antenna and the transceiver are mounted to a common substrate. More preferably, the antenna is a coil and the current generated in the coil is in response to the interrogating signal.
  • the current drawn by the transceiver is to allow its operation. That is, the first state is a normal state, while the second state is a standby state.
  • the current supplies the relevant clock circuits, the signal processing circuit, and the like. In this state, the current also allows the transceiver to generate an identification signal.
  • the transceiver relies upon the current to drive the antenna to transmit the identification signal.
  • the device includes a separate transmission antenna and the transceiver drives that separate antenna to transmit the identification signal. In both cases, the current drawn from the antenna is the source of power for the generation and transmission of the identification signal.
  • the device is preferably passive in that it does not have an onboard power source.
  • the invention is also applicable to active devices wherein the life of the onboard power source is prolonged.
  • a radio frequency identification (“RFID”) device including:
  • an antenna for receiving an interrogation signal and being responsive to the signal for supporting an antenna current
  • transceiver connected to the coupling and drawing an operational current that is derived from the antenna current, whereby the transceiver is selectively responsive to the interrogation signal to generate an identification signal.
  • the transceiver is responsive to the interrogation signal to generate the identification signal. More preferably, in the second state the device is responsive to the interrogation signal only for the purpose of toggling the antenna current between the first and second states. That is, the first state is a normal current state, whereas the second state is a low current or standby state.
  • the antenna is responsive to the transceiver for transmitting the identification signal.
  • the device includes a separate antenna that is responsive to the transceiver for transmitting the identification signal.
  • a system for identifying articles that are collocated with an RFID tag of the first aspect including:
  • an interrogator for providing an interrogating field
  • respective antennas for being contemporaneously disposed within the field and being responsive to that field for providing antenna currents
  • a receiver for processing the identification signals to extract the identification data and thereby identify the respective articles.
  • the current drawn by the transceiver during the operational state is greater than the current drawn during the standby state. More preferably, the transceiver selects the standby state more frequently than the operational state. Even more preferable, the probability of selecting the second state is at least twice the probability of selecting the first state.
  • the transceiver has an operating cycle with a start and a finish wherein, during that cycle, the transceiver is in either the first or the second state.
  • the transceiver selects the first state with a small probability of less than 1 ⁇ 2. More preferably, the probability is less than 1 ⁇ 4. Even more preferably, the probability is less than or equal to 1/16.
  • the selection of state is based upon a predetermined algorithm.
  • An example of a preferred algorithm is a random or a pseudo-random number used to determine the state selection of the transceiver.
  • the identification signals are transmitted while the respective transceivers are in the first state. More preferably, the transceivers use the respective antennas to transmit the identification signals. In other embodiments, however, the devices include respective second antennas that are used by the transceivers to transmit the identification signals.
  • a radio frequency identification (“RFID”) device including:
  • transceiver for selecting between a normal state and a standby state wherein, during the normal state, the transceiver is responsive to the interrogation signal for generating an identification signal and, during the standby state, the transceiver is only responsive to the interrogation signal for selecting between the normal and standby states.
  • a voltage regulator for a radio frequency identification (“RFID”) device having: an antenna for receiving an interrogation signal and for transmitting an identification signal and a transceiver for being responsive to the interrogation signal to generate the identification signal.
  • RFID radio frequency identification
  • the regulator including:
  • a current coupling for providing a supply voltage to the transceiver, the current coupling, in the first state, drawing a first current from the antenna and, in the second state, drawing a second current from the antenna that is less than the first current.
  • an identification device for receiving a first signal and transmitting a second signal, the device including:
  • a receiving means for receiving the first signal and employing the first signal to generate a voltage
  • a state selection means for selecting whether the device is in a first state or a second state
  • each device includes:
  • FIG. 4 is a symbolic circuit diagram of another embodiment of the invention that includes a voltage multiplier
  • FIG. 5 is a symbolic circuit diagram of a further embodiment of the invention that includes a voltage doubler circuit
  • FIG. 7 is a symbolic circuit diagram of a further alternative embodiment of the invention that includes a circuit for changing the current collection efficiency of the antenna;
  • FIG. 10 is a symbolic circuit diagram of a further embodiment of the invention that includes a series voltage regulator circuit
  • FIG. 11 is a circuit model for the prior art circuit of FIG. 2 ;
  • FIG. 12 is a circuit model for the device of FIG. 3 ;
  • FIG. 14 is a plan view of the device of FIG. 3 ;
  • FIG. 15 is a perspective cut-away view of a parcel according to another aspect of the invention.
  • FIG. 16 is an alternative symbolic embodiment to that of FIG. 3 , where the antenna coil is substituted with a generic interrogation signal-receiving device;
  • FIG. 17 is an alternative symbolic embodiment to that of FIG. 3 , where the antenna coil is substituted with a dipole antenna;
  • FIG. 3 Figure is an alternative symbolic embodiment to that of FIG. 3 , where the antenna coil is substituted with a capacitive antenna;
  • FIG. 19 is a schematic representation of a system according to a preferred embodiment of the invention.
  • a preferred embodiment of the invention is comprised of a receiver portion 35 ; an integrated circuit 37 with one or more functionalities; a connection 39 between the two; and a state selection means 41 that determines whether the device is in a first state or a second state; and a transmission means 45 —preferably in the form of an antenna 47 .
  • a first embodiment of the invention in the form of a radio frequency identification (“RFID”) device or tag 1 , is symbolically illustrated in FIG. 3 .
  • the tag includes a multi-turn coil 3 for receiving an interrogation signal.
  • a transceiver in the form of an integrated circuit (IC) 4 , is connected to the coil 3 and is responsive to the interrogation signal.
  • IC integrated circuit
  • other devices are used as the transceiver; such devices will be readily apparent to those skilled in the art.
  • coil 3 and the circuit 4 are mounted on a common generally rectangular substrate 2 .
  • the IC includes a memory 42 .
  • Circuit 4 toggles between a first state and a second state, wherein the current drawn from the coil 3 by the circuit 4 —in the presence of the interrogation signal—during a first state is greater than the current drawn during a second state. More specifically, circuit 4 has a current cycle during which the circuit randomly selects either the first or the second state for the duration of the cycle. The random selection of state during the cycle by each individual tag reduces the risk of two adjacent tags simultaneously operating in the first state.
  • the state selection means is implemented with digital circuits. These circuits are designed to select the current state according to the chosen algorithm or method. There are several methods which can be used to implement the state selection circuits. Logic gates can be used to create a dedicated logic circuit for determining the state selection. A state engine consisting of logic arrays can be designed to implement the state selection function. A microcontroller or processor can execute software instructions that code for the chosen algorithm or method. The preferred embodiment is a logic array controlled by a microcontroller. The microcontroller software executes the slower parts of the chosen algorithm or method while the logic array performs the faster parts of the chosen algorithm or method.
  • a typical tag includes a circuit 5 illustrated schematically in FIG. 2 .
  • the voltage V 1 is induced in antenna coil by the interrogation field, and the antenna coil L 1 is tuned by a tuning capacitor C 1 .
  • L 1 and C 1 form a resonant tuned circuit, which magnifies the voltage V 1 by the loaded Q factor of the antenna coil.
  • the AC voltage generated across the tuned circuit is rectified by a rectifier 6 , and the DC output voltage is stored on a storage capacitor C 2 .
  • the DC load of the IC is represented by R 1 .
  • FIG. 11 shows a circuit model for the prior art circuit 5 where corresponding features are denoted by corresponding notations.
  • the antenna coil is represented by inductance L 1 and the coil losses by series resistance R 5 .
  • the tuning capacitance and circuit stray capacitance are represented by C 1 , and the losses of the rectifier and IC circuit by R 3 .
  • the resonant currents circulating in the tuned circuit formed by L 1 and C 1 are I 1 ; and the output current into R 3 is 12 .
  • the antenna coil When the antenna coil current becomes very small or, as in some cases zero, the coil becomes transparent to the interrogation field. In this state the antenna coil has (a) no effect upon the interrogation field and (b) those tags in the low current state do not interfere with the operation of those tags in the normal current state.
  • tag 1 In the low current state, tag 1 is not fully functional. That is, the current drawn from the coil is reduced such that only necessary circuit functions are viable. In a preferred embodiment, the current is in the order of 30 ⁇ A. Ideally, the current is zero; or at least minimized as much as possible.
  • the impedance seen by the antenna coil should be as large as possible. This is particularly so in the low current state. That is, the quantum of the antenna current is proportional to the quantum of the resistive and/or the reactive load as seen by the coil. When the amount of coil current is too high, coil-to-coil magnetic interference will cause the tags to stop operating reliably.
  • the two states can be symbolically reflected by a switch SW 1 and resistors R 1 and R 2 . Importantly, these are employed to reflect the two states and are not, in fact, part of the invention.
  • switch SW 1 reflects the device's operation in the two different “states”. In essence, this is further symbolically implemented by resistors R 1 and R 2 —which are representative of the load provided by circuit 4 in the low current state and the normal current state respectively.
  • FIG. 12 illustrates a circuit model for tag 1 . Particularly:
  • the IC's operating voltage is changed such that the low current state's operating voltage, VA+VB, is higher than the normal current state's operating voltage, VB.
  • the transceiver portion of the device operates at a lower current—therefore, less current is drawn from the antenna.
  • the embodiment of FIG. 9 includes a circuit that utilises a series regulator for controlling the operating voltage.
  • the input voltage to the regulator increases when the circuit toggles into the low current state.
  • the interrogator may be placed at a passage (through which the box is placed) between a safety deposit storage area and a customer service area.
  • the personnel progressing the box also carries a tag so that their identity may be determined.
  • the tags operate in either of two current states. At any one time, a small proportion of the tags are in a normal current state where the tags are responsive to the interrogator, and the remainder of the tags are in a low current state where they are not fully functional. Accordingly, in the FIG. 12 embodiment, where the tags must operate within a few millimetres of each other, the probability of an individual tag being in the normal state is 1/16.
  • the selection of state is made using a predetermined algorithm.
  • An example of a preferred algorithm is a random or a pseudo-random number algorithm.
  • the tags randomly select their current state autonomously. That is, the tags randomly choose a current state; receive commands and/or data, and/or transmit replies; and then randomly choose a new current state.
  • the interrogation signals are used to direct tags to select a new current state, and the tags randomly choose their current state.
  • These interrogation signals take the form of short breaks in the interrogation field. Examples of such breaks include a single break and a coded break (where the codes are sequences of breaks directing the tags to perform a various current state selection).
  • modulation of the interrogation field are used to direct tags in their selection of current state.
  • modulations include amplitude, phase, and frequency modulation.
  • the precise proportion of tags selecting the normal state is not critical, except in so far that the coupling between tags is reduced sufficiently to allow reliable operation.
  • the probabilities or proportion of operating tags should be selected to suit the number and spacing of tags and can be determined by experiment.
  • the mask may be altered each time the tag exits the normal state. In this way, adjacent tags with similar numbers are prevented from moving to the normal current state at the same time.
  • a number of tags are associated with a single article.
  • one of the tags contains data readable only by the courier organisation, while another tag includes data only readable by the sender and recipient of the envelope.
  • the interrogator 43 is either a fixed installation device or, in other embodiments, a handheld device. In any event, the interrogator provides an interrogation signal—preferably in the form of a RF field—that is detected by, and selectively responded to, by each tag in its field.
  • an interrogation signal preferably in the form of a RF field
  • tags are used to identify items such as baggage and are designed to operate at ranges of up to 1 metre, the application of such technology is thereby limited to circumstances where tags are well spaced apart. In sharp contrast, the preferred embodiments of the invention are able to be stacked closely and continue to reliably operate.
  • a typical application is the identification of RFID tags attached to bundles of letters where the tag data is used to control the automatic sorting of each letter.
  • the invention is not limited to this particular field of use.
  • various aspects of the invention are applicable to systems used for identification or inventory management of items such as shoe uppers, shoe soles, diamonds, and jewellery.
  • the preferred embodiments may be applied advantageously to various uses such as item identification, stock control, and inventory management.
  • the application's tag and system allow these processes to be done in bulk and automatically—without the need for manual intervention. Accordingly, the preferred embodiments of the invention provide many significant advantages over prior art systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Artificial Intelligence (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Near-Field Transmission Systems (AREA)
  • Networks Using Active Elements (AREA)
US10/525,408 2002-08-22 2003-08-22 Identification device and identification system Abandoned US20060226955A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US11/463,960 US20060290475A1 (en) 2002-08-22 2006-08-11 Electronic Devices and Systems
US13/891,681 US20130249674A1 (en) 2002-08-22 2013-05-10 Identification device and identification system
US14/220,205 US9165171B2 (en) 2002-08-22 2014-03-20 Identification device and identification system
US14/863,499 US9524457B2 (en) 2002-08-22 2015-09-24 Identification device and identification system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2002950973 2002-08-22
AU2002950973A AU2002950973A0 (en) 2002-08-22 2002-08-22 A radio frequency identification ("rfid") device
PCT/AU2003/001072 WO2004019055A1 (fr) 2002-08-22 2003-08-22 Dispositif et systeme d'identification

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2003/001072 A-371-Of-International WO2004019055A1 (fr) 2002-08-22 2003-08-22 Dispositif et systeme d'identification

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/891,681 Continuation US20130249674A1 (en) 2002-08-22 2013-05-10 Identification device and identification system

Publications (1)

Publication Number Publication Date
US20060226955A1 true US20060226955A1 (en) 2006-10-12

Family

ID=27810050

Family Applications (5)

Application Number Title Priority Date Filing Date
US10/525,408 Abandoned US20060226955A1 (en) 2002-08-22 2003-08-22 Identification device and identification system
US11/463,960 Abandoned US20060290475A1 (en) 2002-08-22 2006-08-11 Electronic Devices and Systems
US13/891,681 Abandoned US20130249674A1 (en) 2002-08-22 2013-05-10 Identification device and identification system
US14/220,205 Expired - Lifetime US9165171B2 (en) 2002-08-22 2014-03-20 Identification device and identification system
US14/863,499 Expired - Lifetime US9524457B2 (en) 2002-08-22 2015-09-24 Identification device and identification system

Family Applications After (4)

Application Number Title Priority Date Filing Date
US11/463,960 Abandoned US20060290475A1 (en) 2002-08-22 2006-08-11 Electronic Devices and Systems
US13/891,681 Abandoned US20130249674A1 (en) 2002-08-22 2013-05-10 Identification device and identification system
US14/220,205 Expired - Lifetime US9165171B2 (en) 2002-08-22 2014-03-20 Identification device and identification system
US14/863,499 Expired - Lifetime US9524457B2 (en) 2002-08-22 2015-09-24 Identification device and identification system

Country Status (6)

Country Link
US (5) US20060226955A1 (fr)
EP (3) EP1739452A3 (fr)
JP (2) JP4318640B2 (fr)
AU (1) AU2002950973A0 (fr)
ES (1) ES2549403T3 (fr)
WO (1) WO2004019055A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060115797A1 (en) * 2004-01-06 2006-06-01 Gray Stuart F Bar codes or radio frequency identification tags on paper currency, checks, credit/debit cards and personal identification
US20080258872A1 (en) * 2004-10-15 2008-10-23 Koninklijke Philips Electronics N.V. Method of Operating a Rfid System
US20150200557A1 (en) * 2005-01-20 2015-07-16 RadioFIDO, LLC Method for Using Microradios and Associated Microradio
US20170131222A1 (en) * 2014-03-24 2017-05-11 Farsens, S.L. System and method for taking a passive measurement of a physical quantity wirelessly
CN110097867A (zh) * 2019-04-03 2019-08-06 陕西艺术职业学院 基于蓝牙传输可拼接双排键电子琴连接装置
US11037041B2 (en) * 2016-09-23 2021-06-15 Elydan Identification sensor for works buried at great depth
CN115796217A (zh) * 2022-11-11 2023-03-14 芯电智联(北京)科技有限公司 一种nfc防伪标签的激活系统

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002950973A0 (en) 2002-08-22 2002-09-12 Magellan Technology Pty Ltd A radio frequency identification ("rfid") device
WO2005093455A1 (fr) * 2004-03-29 2005-10-06 Magellan Technology Pty Ltd. Chaine d'approvisionnement et/ou authentification d'un article, systeme, procede et dispositif de tracage, d'identification et de surveillance
WO2005121832A1 (fr) * 2004-06-09 2005-12-22 Magellan Technology Pty Ltd Procede, systeme et appareil de gestion de documents
GB0415157D0 (en) * 2004-07-06 2004-08-11 Innovision Res & Tech Plc Apparatus for shunt regulation
KR101254550B1 (ko) * 2005-04-22 2013-04-19 가부시키가이샤 다이후쿠 무접촉 급전 설비의 2차측 수전 회로 장치
KR101219068B1 (ko) * 2005-05-19 2013-01-18 가부시키가이샤 한도오따이 에네루기 켄큐쇼 반도체 장치 및 이를 이용한 무선 통신 시스템
US7928847B2 (en) 2005-09-12 2011-04-19 Magellan Technology Pty Limited Antenna design and interrogator system
US10715209B2 (en) 2006-11-18 2020-07-14 RF Micron, Inc. Computing device for processing environmental sensed conditions
US11817637B2 (en) 2006-11-18 2023-11-14 Rfmicron, Inc. Radio frequency identification (RFID) moisture tag(s) and sensors with extended sensing via capillaries
US10149177B2 (en) 2006-11-18 2018-12-04 Rfmicron, Inc. Wireless sensor including an RF signal circuit
EP2286520B1 (fr) 2008-06-12 2016-12-14 Sato Holdings Corporation Conception d'antenne et système d'interrogation
US8432070B2 (en) 2008-08-25 2013-04-30 Qualcomm Incorporated Passive receivers for wireless power transmission
US8947041B2 (en) 2008-09-02 2015-02-03 Qualcomm Incorporated Bidirectional wireless power transmission
US8532724B2 (en) 2008-09-17 2013-09-10 Qualcomm Incorporated Transmitters for wireless power transmission
TWI438697B (zh) * 2010-08-26 2014-05-21 Chung Shan Inst Of Science Power - saving electronic tags
AU2013201425A1 (en) 2012-07-13 2014-01-30 Sato Holdings Corporation Antenna Design and Interrogator System
EP2987117B1 (fr) 2013-04-15 2019-03-06 Sato Holdings Corporation Système, appareil et procédé d'interrogation
WO2016038897A1 (fr) 2014-09-12 2016-03-17 Sato Holdings Kabushiki Kaisha Système, appareil et procédé rfid à rayon d'action étendu

Citations (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299424A (en) * 1965-05-07 1967-01-17 Jorgen P Vinding Interrogator-responder identification system
US4019181A (en) * 1974-07-19 1977-04-19 U.S. Philips Corporation Transponder system
US4075632A (en) * 1974-08-27 1978-02-21 The United States Of America As Represented By The United States Department Of Energy Interrogation, and detection system
US4545241A (en) * 1982-06-25 1985-10-08 Smith International, Inc. In-hole motor tachometer
US5045770A (en) * 1988-02-04 1991-09-03 Magellan Corporation (Aust.) Pty. Ltd. Shunt regulator for use with resonant input source
US5153583A (en) * 1987-11-18 1992-10-06 Uniscan Ltd. Transponder
US5517194A (en) * 1994-02-10 1996-05-14 Racom Systems, Inc. Passive RF transponder and method
US5550536A (en) * 1994-08-17 1996-08-27 Texas Instruments Deutschland Gmbh Circuit frequency following technique transponder resonant
US5606323A (en) * 1995-08-31 1997-02-25 International Business Machines Corporation Diode modulator for radio frequency transponder
US5625341A (en) * 1995-08-31 1997-04-29 Sensormatic Electronics Corporation Multi-bit EAS marker powered by interrogation signal in the eight MHz band
US5887176A (en) * 1996-06-28 1999-03-23 Randtec, Inc. Method and system for remote monitoring and tracking of inventory
US5963144A (en) * 1997-05-30 1999-10-05 Single Chip Systems Corp. Cloaking circuit for use in a radiofrequency identification and method of cloaking RFID tags to increase interrogation reliability
US5970398A (en) * 1996-07-30 1999-10-19 Micron Communications, Inc. Radio frequency antenna with current controlled sensitivity
US6005638A (en) * 1996-03-04 1999-12-21 Axcess, Inc. Frame averaging for use in processing video data
US6034603A (en) * 1997-01-24 2000-03-07 Axcess, Inc. Radio tag system and method with improved tag interference avoidance
US6061475A (en) * 1998-03-20 2000-05-09 Axcess, Inc. Video compression apparatus and method
US6072383A (en) * 1998-11-04 2000-06-06 Checkpoint Systems, Inc. RFID tag having parallel resonant circuit for magnetically decoupling tag from its environment
US6157821A (en) * 1997-10-23 2000-12-05 Ericsson Inc. Voltage step up for a low voltage frequency synthesizer architecture
US6294953B1 (en) * 1999-02-26 2001-09-25 Axcess, Inc. High sensitivity demodulator for a radio tag and method
US20010035461A1 (en) * 1998-07-29 2001-11-01 Holger Sedlak Data carrier with regulation of the power consumption
US6392544B1 (en) * 2000-09-25 2002-05-21 Motorola, Inc. Method and apparatus for selectively activating radio frequency identification tags that are in close proximity
US6404325B1 (en) * 1998-01-08 2002-06-11 Intermec Ip Corp. Method and system for storage and recovery of vital information on radio frequency transponders
US6427065B1 (en) * 1996-09-13 2002-07-30 Hitachi, Ltd. Power transmission system, IC card and information communication system using IC card
US20030007473A1 (en) * 1999-10-21 2003-01-09 Jon Strong Method and apparatus for integrating wireless communication and asset location
US6525648B1 (en) * 1999-01-29 2003-02-25 Intermec Ip Corp Radio frequency identification systems and methods for waking up data storage devices for wireless communication
US6538564B1 (en) * 1997-01-17 2003-03-25 Integrated Silicon Design Pty Ltd Multiple tag reading system
US6570487B1 (en) * 1997-01-24 2003-05-27 Axcess Inc. Distributed tag reader system and method
US6954859B1 (en) * 1999-10-08 2005-10-11 Axcess, Inc. Networked digital security system and methods
US7005985B1 (en) * 1999-07-20 2006-02-28 Axcess, Inc. Radio frequency identification system and method
US7286158B1 (en) * 1999-12-22 2007-10-23 Axcess International Inc. Method and system for providing integrated remote monitoring services

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU470652A1 (ru) 1973-03-20 1975-05-15 Электронна система зажигани
FR2442452A1 (fr) 1978-11-27 1980-06-20 Alsthom Cgee Dispositif de reconnaissance a distance d'un mobile porteur d'un dispositif repondeur code
EP0111753A3 (fr) 1982-11-18 1986-12-30 Götting KG Dispositif d'identification d'un objet
US4546241A (en) 1982-12-10 1985-10-08 Walton Charles A Electronic proximity identification system
GB8420893D0 (en) 1984-08-16 1984-09-19 Buttemer D A Transponder
JPS62178173A (ja) 1986-01-29 1987-08-05 Sony Corp 電源装置
US4786907A (en) * 1986-07-14 1988-11-22 Amtech Corporation Transponder useful in a system for identifying objects
EP0918308B1 (fr) * 1991-04-03 2005-12-14 Tagsys SA Système de triage d'articles
US5266926A (en) * 1991-05-31 1993-11-30 Avid Marketing, Inc. Signal transmission and tag power consumption measurement circuit for an inductive reader
FR2757952B1 (fr) * 1996-12-27 1999-03-19 Gemplus Card Int Transpondeur radioelectrique muni d'une antenne et d'un circuit de desaccord en frequence
GB2321726A (en) * 1997-01-30 1998-08-05 Motorola Inc Apparatus and method for regulating power on a contactless portable data carrier
US6208235B1 (en) * 1997-03-24 2001-03-27 Checkpoint Systems, Inc. Apparatus for magnetically decoupling an RFID tag
US6515919B1 (en) * 1998-08-10 2003-02-04 Applied Wireless Identifications Group, Inc. Radio frequency powered voltage pump for programming EEPROM
JP3476000B2 (ja) * 1998-11-05 2003-12-10 三菱マテリアル株式会社 重畳したタグの識別方式
ITMI991375A1 (it) 1999-06-18 2000-12-18 Sicce Spa Rotore di motore sincrono a magneti permanenti con senso di rotazionepredeterminato
JP2001160767A (ja) 1999-12-02 2001-06-12 Oki Denki Communication Systems:Kk 無線装置における識別送受信の方法
US6329944B1 (en) * 2000-05-12 2001-12-11 Northrop Grumman Corporation Tag communication protocol & system
GB2362550B (en) 2000-05-16 2004-09-22 Sagem Communication device for a computer network provided with a navigator and a rudimentary screen
US6229443B1 (en) * 2000-06-23 2001-05-08 Single Chip Systems Apparatus and method for detuning of RFID tag to regulate voltage
WO2002027650A1 (fr) * 2000-09-29 2002-04-04 Microchip Technology Incorporated Procede et appareil permettant de desaccorder un circuit resonnant d'un dispositif alimente a distance
AU2002950973A0 (en) 2002-08-22 2002-09-12 Magellan Technology Pty Ltd A radio frequency identification ("rfid") device
US20070159338A1 (en) 2005-12-22 2007-07-12 Axcess International Inc. Hybrid Radio Frequency Identification (RFID) Tag System
WO2007103254A2 (fr) 2006-03-02 2007-09-13 Axcess International Inc. Système et procédé pour déterminer le lieu, l'orientation et la vitesse d'étiquettes d'identification à transmission radiofréquence (rfid)
US20070285241A1 (en) 2006-03-20 2007-12-13 Axcess International Inc. Multi-Tag Tracking Systems and Methods
US7800503B2 (en) 2006-05-11 2010-09-21 Axcess International Inc. Radio frequency identification (RFID) tag antenna design

Patent Citations (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299424A (en) * 1965-05-07 1967-01-17 Jorgen P Vinding Interrogator-responder identification system
US4019181A (en) * 1974-07-19 1977-04-19 U.S. Philips Corporation Transponder system
US4075632A (en) * 1974-08-27 1978-02-21 The United States Of America As Represented By The United States Department Of Energy Interrogation, and detection system
US4545241A (en) * 1982-06-25 1985-10-08 Smith International, Inc. In-hole motor tachometer
US5153583A (en) * 1987-11-18 1992-10-06 Uniscan Ltd. Transponder
US5045770A (en) * 1988-02-04 1991-09-03 Magellan Corporation (Aust.) Pty. Ltd. Shunt regulator for use with resonant input source
US5517194A (en) * 1994-02-10 1996-05-14 Racom Systems, Inc. Passive RF transponder and method
US5550536A (en) * 1994-08-17 1996-08-27 Texas Instruments Deutschland Gmbh Circuit frequency following technique transponder resonant
US5606323A (en) * 1995-08-31 1997-02-25 International Business Machines Corporation Diode modulator for radio frequency transponder
US5625341A (en) * 1995-08-31 1997-04-29 Sensormatic Electronics Corporation Multi-bit EAS marker powered by interrogation signal in the eight MHz band
US6005638A (en) * 1996-03-04 1999-12-21 Axcess, Inc. Frame averaging for use in processing video data
US5887176A (en) * 1996-06-28 1999-03-23 Randtec, Inc. Method and system for remote monitoring and tracking of inventory
US5970398A (en) * 1996-07-30 1999-10-19 Micron Communications, Inc. Radio frequency antenna with current controlled sensitivity
US6427065B1 (en) * 1996-09-13 2002-07-30 Hitachi, Ltd. Power transmission system, IC card and information communication system using IC card
US6538564B1 (en) * 1997-01-17 2003-03-25 Integrated Silicon Design Pty Ltd Multiple tag reading system
US6034603A (en) * 1997-01-24 2000-03-07 Axcess, Inc. Radio tag system and method with improved tag interference avoidance
US6570487B1 (en) * 1997-01-24 2003-05-27 Axcess Inc. Distributed tag reader system and method
US5963144A (en) * 1997-05-30 1999-10-05 Single Chip Systems Corp. Cloaking circuit for use in a radiofrequency identification and method of cloaking RFID tags to increase interrogation reliability
US6157821A (en) * 1997-10-23 2000-12-05 Ericsson Inc. Voltage step up for a low voltage frequency synthesizer architecture
US6404325B1 (en) * 1998-01-08 2002-06-11 Intermec Ip Corp. Method and system for storage and recovery of vital information on radio frequency transponders
US6061475A (en) * 1998-03-20 2000-05-09 Axcess, Inc. Video compression apparatus and method
US20010035461A1 (en) * 1998-07-29 2001-11-01 Holger Sedlak Data carrier with regulation of the power consumption
US6072383A (en) * 1998-11-04 2000-06-06 Checkpoint Systems, Inc. RFID tag having parallel resonant circuit for magnetically decoupling tag from its environment
US6525648B1 (en) * 1999-01-29 2003-02-25 Intermec Ip Corp Radio frequency identification systems and methods for waking up data storage devices for wireless communication
US6294953B1 (en) * 1999-02-26 2001-09-25 Axcess, Inc. High sensitivity demodulator for a radio tag and method
US7005985B1 (en) * 1999-07-20 2006-02-28 Axcess, Inc. Radio frequency identification system and method
US20060066444A1 (en) * 1999-07-20 2006-03-30 Axcess, Inc. A Delaware Corporation Method and system for networking radio tags in a radio frequency identification system
US20060071756A1 (en) * 1999-07-20 2006-04-06 Axcess, Inc., A Delaware Corporation Dual frequency radio tag for a radio frequency identification system
US7271727B2 (en) * 1999-07-20 2007-09-18 Axcess International, Inc. Dual frequency radio tag for a radio frequency identification system
US6954859B1 (en) * 1999-10-08 2005-10-11 Axcess, Inc. Networked digital security system and methods
US20030007473A1 (en) * 1999-10-21 2003-01-09 Jon Strong Method and apparatus for integrating wireless communication and asset location
US7286158B1 (en) * 1999-12-22 2007-10-23 Axcess International Inc. Method and system for providing integrated remote monitoring services
US6392544B1 (en) * 2000-09-25 2002-05-21 Motorola, Inc. Method and apparatus for selectively activating radio frequency identification tags that are in close proximity

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060115797A1 (en) * 2004-01-06 2006-06-01 Gray Stuart F Bar codes or radio frequency identification tags on paper currency, checks, credit/debit cards and personal identification
US20080258872A1 (en) * 2004-10-15 2008-10-23 Koninklijke Philips Electronics N.V. Method of Operating a Rfid System
US9030299B2 (en) * 2004-10-15 2015-05-12 Nxp B.V. Method of operating a RFID system
US20150200557A1 (en) * 2005-01-20 2015-07-16 RadioFIDO, LLC Method for Using Microradios and Associated Microradio
US9831694B2 (en) * 2005-01-20 2017-11-28 RadioFIDO, LLC Method for using microradios and associated microradio
US20170131222A1 (en) * 2014-03-24 2017-05-11 Farsens, S.L. System and method for taking a passive measurement of a physical quantity wirelessly
US11037041B2 (en) * 2016-09-23 2021-06-15 Elydan Identification sensor for works buried at great depth
RU2754599C2 (ru) * 2016-09-23 2021-09-03 Элидан Датчик для идентификации конструкций, находящихся на большой глубине
AU2017330068B2 (en) * 2016-09-23 2022-06-02 Eliot Innovative Solutions S.A.S. Identification sensor for works buried at great depth
CN110097867A (zh) * 2019-04-03 2019-08-06 陕西艺术职业学院 基于蓝牙传输可拼接双排键电子琴连接装置
CN115796217A (zh) * 2022-11-11 2023-03-14 芯电智联(北京)科技有限公司 一种nfc防伪标签的激活系统

Also Published As

Publication number Publication date
EP1739452A3 (fr) 2008-11-26
EP2942642B1 (fr) 2021-09-15
US9524457B2 (en) 2016-12-20
US20140232533A1 (en) 2014-08-21
AU2002950973A0 (en) 2002-09-12
US20130249674A1 (en) 2013-09-26
WO2004019055A8 (fr) 2004-08-26
EP1739452A2 (fr) 2007-01-03
EP1535085B8 (fr) 2016-08-31
US9165171B2 (en) 2015-10-20
US20160012326A1 (en) 2016-01-14
JP2008283702A (ja) 2008-11-20
JP2005536927A (ja) 2005-12-02
US20060290475A1 (en) 2006-12-28
EP1535085A1 (fr) 2005-06-01
EP1535085A4 (fr) 2005-11-02
ES2549403T3 (es) 2015-10-27
JP4318640B2 (ja) 2009-08-26
EP2942642A1 (fr) 2015-11-11
WO2004019055A1 (fr) 2004-03-04
EP2942642B8 (fr) 2021-10-20
EP1535085B1 (fr) 2015-09-30

Similar Documents

Publication Publication Date Title
US9524457B2 (en) Identification device and identification system
US6819222B2 (en) Inventory control system using R.F. object identification
KR100660447B1 (ko) 무선 주파수 식별 시스템용 애플리케이션
US7002451B2 (en) Package location system
US6480699B1 (en) Stand-alone device for transmitting a wireless signal containing data from a memory or a sensor
US8026819B2 (en) Radio tag and system
CN101213030A (zh) 邮件分拣系统和方法
EP2187343B1 (fr) Dispositif et procédé de couplage d'un processeur sur une étiquette RFID
CN106663237A (zh) 用于改进的产品分配的智能路由代码
JP2006180073A (ja) 無線ｉｃタグ
Narayanan et al. Implementing RFID in library: methodologies, advantages and disadvantages
EP1687758B1 (fr) Systeme d'acheminement et de suivi de produits
EP3371746B1 (fr) Dispositif, système et procédé d'identification d'objet
AU2003250618B2 (en) An identification device and identification system
JP2001134729A (ja) 識別無線タグとその関連装置およびそれらを用いたシステム
JP2002104626A (ja) 識別用電子タグ
JP2007308154A (ja) 非接触型ｉｃ袋及び内容物管理方法
Agarwal et al. RFID (Radio Frequency Identification) growth in daily life
KR102061704B1 (ko) 전자태그 통합 발행 시스템
JPH1152859A (ja) 位置検出用タグ
Verma et al. RFID in Libraries: An Overview
KR20200142972A (ko) 포장물의 개봉 검출기를 갖는 무선 통신 장치
WO2017149427A1 (fr) Système destiné à la lecture de données et procédé de lecture de données d'étiquette électronique
Badiger et al. IMPLEMENTING RFID IN LIBRARY: METHODOLOGIES, ADVANTAGES AND DISADVANTAGES
Mccombie et al. Radio Frequency Identification Technology

Legal Events

Date Code Title Description
AS Assignment

Owner name: MAGELLAN TECHNOLOGY PTY LIMITED, AUSTRALIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MURDOCH, GRAHAM ALEXANDER MUNRO;LITTLECHILD, STUART COLIN;REEL/FRAME:017493/0103

Effective date: 20050310

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

AS Assignment

Owner name: PDS GAMING CORPORATION, NEVADA

Free format text: SECURITY INTEREST;ASSIGNORS:PJM GAMING PTY LTN A.C.N.154 145 178;WALKER DIGITAL TABLE SYSTEMS, LLC;REEL/FRAME:038516/0613

Effective date: 20160502

AS Assignment

Owner name: PDS GAMING LLC, NEVADA

Free format text: SECURITY INTEREST;ASSIGNORS:PJM GAMING PTY LTN A.C.N. 154 145 178;WALKER DIGITAL TABLE SYSTEMS, LLC;SIGNING DATES FROM 20160320 TO 20180320;REEL/FRAME:045286/0410

AS Assignment

Owner name: PDS GAMING LLC, NEVADA

Free format text: SECURITY INTEREST;ASSIGNORS:PJM GAMING PTY LTN A.C.N. 154 145 178;WALKER DIGITAL TABLE SYSTEMS, LLC;REEL/FRAME:045814/0591

Effective date: 20180515

AS Assignment

Owner name: PDS GAMING LLC, NEVADA

Free format text: SECURITY INTEREST;ASSIGNORS:WALKER DIGITAL TABLE SYSTEMS, LLC;PJM GAMING PTY LTN A.C.N. 154 145 178;REEL/FRAME:046375/0573

Effective date: 20180717