CA2522551A1 - Three dimensional data storage - Google Patents

Three dimensional data storage Download PDF

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Publication number
CA2522551A1
CA2522551A1 CA002522551A CA2522551A CA2522551A1 CA 2522551 A1 CA2522551 A1 CA 2522551A1 CA 002522551 A CA002522551 A CA 002522551A CA 2522551 A CA2522551 A CA 2522551A CA 2522551 A1 CA2522551 A1 CA 2522551A1
Authority
CA
Canada
Prior art keywords
pixels
computer readable
pixel
document
data storage
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
CA002522551A
Other languages
French (fr)
Other versions
CA2522551C (en
Inventor
Robert L. Jones
Leo M. Kenen
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.)
Digimarc Corp
Original Assignee
Digimarc Corporation
Robert L. Jones
Leo M. Kenen
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 Digimarc Corporation, Robert L. Jones, Leo M. Kenen filed Critical Digimarc Corporation
Publication of CA2522551A1 publication Critical patent/CA2522551A1/en
Application granted granted Critical
Publication of CA2522551C publication Critical patent/CA2522551C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/06009Record 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 with optically detectable marking
    • G06K19/06018Record 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 with optically detectable marking one-dimensional coding
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/06009Record 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 with optically detectable marking
    • G06K19/06037Record 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 with optically detectable marking multi-dimensional coding
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/06009Record 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 with optically detectable marking
    • G06K19/06046Constructional details
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/06009Record 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 with optically detectable marking
    • G06K19/06046Constructional details
    • G06K19/06056Constructional details the marking comprising a further embedded marking, e.g. a 1D bar code with the black bars containing a smaller sized coding
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/08Record 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 using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10Record 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 using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/14Record 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 using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by radiation
    • 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
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/14Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
    • G06K7/1404Methods for optical code recognition
    • G06K7/1408Methods for optical code recognition the method being specifically adapted for the type of code
    • G06K7/14172D bar codes

Abstract

An identification document is provided comprising a printable layer, a computer readable data storage element, and a computer readable calibration element (32). The computer readable data storage element is formed on the printable layer and comprises a plurality of pixels, wherein each pixel has one of a predetermined plurality of colors. The computer readable calibration element (30) is formed on the printable layer and comprises a plurality of pixels (40, 42a-42h) and includes information (44, 42b) enabling a determination of the pixel size in the computer readable data storage element and also a determination of at least a portion of the predetermined plurality of colors (41,46).

Claims (20)

1. An identification document, comprising:
a printable layer;
a computer readable data storage element formed on the printable layer, the computer readable data storage element comprising a plurality of pixels, wherein each pixel has one of a predetermined plurality of colors;
a computer readable calibration element formed on the printable layer, the calibration element comprising a plurality of pixels and the calibration element including information enabling a determination of the pixel size in the computer readable data storage element and also a determination of at least a portion of the predetermined plurality of colors.
2. The identification document of claim 1, wherein the computer readable data storage element and the computer readable calibration element are printed using the same type of printing.
3. The identification document of claim 1, wherein the printing is laser engraving.
4. The identification document of claim 3, wherein at least one of the pixels in the computer readable data storage element is capable of being changed after printing by application of additional laser radiation to the pixel.
5. The identification document of claim 4, wherein the change is at least one of darkening the pixel and clearing the pixel.
6. The identification document of claim 1, wherein the pixels of the computer readable data storage element are spaced apart from each other by one or more predetermined pixel spacings and where the computer readable data calibration element further comprises information enabling a determination of at least one of the pixel spacings.
7. The identification document of claim 1, wherein at least one of the computer readable data storage element and the computer readable calibration element is positioned at a predetermined location on the printable layer.
8. The identification document of claim 1, wherein the computer readable calibration element is disposed near the computer readable data storage element.
9. The identification document of claim 1, wherein the identification document further comprises personalized data printed to the printable layer and wherein the computer readable data storage element comprises data associated with at least a portion of the personalized data.
10. The identification document of claim 1, wherein the computer readable data storage element comprises encrypted data.
11. A system for providing a printed computer readable data storage element on document, comprising:
a printable document substrate;
a computer readable array of pixels printed on the document substrate; and means formed on the printable document substrate for calibrating the intensity of each pixel in the computer readable array of pixels.
12. The system of claim 10, further comprising means formed on the printable document substrate for determining the size of each pixel in the computer readable array of pixels.
13. The system of claim 10, further comprising means formed on the printable substrate for determining the spacing between the pixels in the computer readable array of pixels.
14. A method for providing a printed computer readable data element to a document, comprising:
printing a first plurality of pixels to a first location on a document, each pixel having a pixel intensity, each pixel intensity associated with a respective piece of data;
printing a second plurality of pixels to second location on the document, the second plurality of pixels comprising at least one pixel associated with each possible pixel intensity;
printing a third plurality of pixels to a third location on the document, the third plurality of pixels comprising a pair of pixels spaced apart and capable of being scanned by a scanner; and.
printing a fourth plurality of pixels to a fourth location on the document, the fourth plurality of pixels spaced a predetermined distance from the second and third pluralities of pixels, the fourth plurality of pixels serving to reference the locations of the second and third pluralities of pixels.
15. The method of claim 14, wherein the first plurality of pixels can be interpreted by first scanning at least one of the second, third, and fourth pluralities of pixels.
16. The method of claim 14, further comprising printing a reference pixel to a fourth location on the document, the reference pixel spaced a predetermined distance from the fourth plurality of pixels and from the first plurality of pixels, the reference pixel helping to define at least one predetermined pixel intensity.
17. The method of claim 14, wherein the pixels in each plurality are printed by laser engraving.
18. The method of claim 17, wherein at least one of the pixels in the first plurality can be changed by applying additional laser radiation to the pixel.
19. The method of claim 18, wherein the additional laser radiation darkens the pixel.
20. The method of claim 18, wherein the additional laser radiation clears the pixel.
CA002522551A 2003-04-16 2004-04-16 Three dimensional data storage Expired - Fee Related CA2522551C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US46366003P 2003-04-16 2003-04-16
US46365903P 2003-04-16 2003-04-16
US60/463,660 2003-04-16
US60/463,659 2003-04-16
US48853603P 2003-07-17 2003-07-17
US60/488,536 2003-07-17
PCT/US2004/011810 WO2004095348A2 (en) 2003-04-16 2004-04-16 Three dimensional data storage

Publications (2)

Publication Number Publication Date
CA2522551A1 true CA2522551A1 (en) 2004-11-04
CA2522551C CA2522551C (en) 2009-12-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002522551A Expired - Fee Related CA2522551C (en) 2003-04-16 2004-04-16 Three dimensional data storage

Country Status (6)

Country Link
US (2) US7225991B2 (en)
EP (1) EP1614064B1 (en)
AT (1) ATE491190T1 (en)
CA (1) CA2522551C (en)
DE (1) DE602004030434D1 (en)
WO (1) WO2004095348A2 (en)

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