CA2033868A1 - System for reading and writing data from and into remote tags - Google Patents

System for reading and writing data from and into remote tags

Info

Publication number
CA2033868A1
CA2033868A1 CA2033868A CA2033868A CA2033868A1 CA 2033868 A1 CA2033868 A1 CA 2033868A1 CA 2033868 A CA2033868 A CA 2033868A CA 2033868 A CA2033868 A CA 2033868A CA 2033868 A1 CA2033868 A1 CA 2033868A1
Authority
CA
Canada
Prior art keywords
tag
data
signal
interrogator
received
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.)
Granted
Application number
CA2033868A
Other languages
French (fr)
Other versions
CA2033868C (en
Inventor
Jeremy A. Landt
Alfred R. Koelle
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.)
Amtech Systems Inc
Original Assignee
Amtech Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23847773&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2033868(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Amtech Corp filed Critical Amtech Corp
Publication of CA2033868A1 publication Critical patent/CA2033868A1/en
Application granted granted Critical
Publication of CA2033868C publication Critical patent/CA2033868C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07BTICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B15/00Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
    • G07B15/06Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
    • G07B15/063Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
    • B61L25/02Indicating or recording positions or identities of vehicles or vehicle trains
    • B61L25/04Indicating or recording train identities
    • B61L25/048Indicating or recording train identities using programmable tags
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/01Detecting movement of traffic to be counted or controlled
    • G08G1/017Detecting movement of traffic to be counted or controlled identifying vehicles

Abstract

The subject invention relates to a system for identifying, for writing data into and reading data out of electronic tags which may be attached to moving and moveable objects. An interrogator sends an RF signal to a remote tag, the signal including data intended to be received and stored in the tag.
The tag backscatter-modulates the received signal with data temporarily and permanently stored in the tag, including data indicating the identity of the object to which the tag is attached. The interrogator has the capability of (1) recognizing the identity of the tagged abject from the returned backscatter-modulated signal and (2) transmitting data to the tag only if it has data to be transmitted to that particular tagged object.
This permits data to be selectively transmitted to a tag and received and stored by that tag only after the tag has been identified as a correct one to receive that data. The tag, in addition, may have the capability of increasing its sensitivity to the receipt of transmitted data after receiving a signal from the interrogator of sufficient strength to be capable of transmitting data to that tag.
CA002033868A 1990-01-16 1991-01-09 System for reading and writing data from and into remote tags Expired - Lifetime CA2033868C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/465,428 US5030807A (en) 1990-01-16 1990-01-16 System for reading and writing data from and into remote tags
US465,428 1990-01-16

Publications (2)

Publication Number Publication Date
CA2033868A1 true CA2033868A1 (en) 1991-07-17
CA2033868C CA2033868C (en) 2000-06-13

Family

ID=23847773

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002033868A Expired - Lifetime CA2033868C (en) 1990-01-16 1991-01-09 System for reading and writing data from and into remote tags

Country Status (8)

Country Link
US (1) US5030807A (en)
EP (1) EP0438250B1 (en)
JP (1) JP2977629B2 (en)
AU (1) AU629153B2 (en)
CA (1) CA2033868C (en)
ES (1) ES2089121T3 (en)
IL (1) IL96883A0 (en)
PT (1) PT96486B (en)

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US5030807A (en) 1991-07-09
JP2977629B2 (en) 1999-11-15
AU6867291A (en) 1991-07-18
ES2089121T3 (en) 1996-10-01
EP0438250A1 (en) 1991-07-24
IL96883A0 (en) 1992-03-29
PT96486B (en) 1998-07-31
JPH04218789A (en) 1992-08-10
EP0438250B1 (en) 1996-06-19
PT96486A (en) 1992-09-30
CA2033868C (en) 2000-06-13
AU629153B2 (en) 1992-09-24

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