CA2508126A1 - Rotationally symmetric tags - Google Patents
Rotationally symmetric tags Download PDFInfo
- Publication number
- CA2508126A1 CA2508126A1 CA002508126A CA2508126A CA2508126A1 CA 2508126 A1 CA2508126 A1 CA 2508126A1 CA 002508126 A CA002508126 A CA 002508126A CA 2508126 A CA2508126 A CA 2508126A CA 2508126 A1 CA2508126 A1 CA 2508126A1
- Authority
- CA
- Canada
- Prior art keywords
- coded data
- machine
- layout
- sub
- readable
- 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
Links
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
- G06K19/06009—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 with optically detectable marking
- G06K19/06037—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 with optically detectable marking multi-dimensional coding
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
-
- 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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10861—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels
- G06K7/10871—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing of data fields affixed to objects or articles, e.g. coded labels randomly oriented data-fields, code-marks therefore, e.g. concentric circles-code
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Editing Of Facsimile Originals (AREA)
- Record Information Processing For Printing (AREA)
- Image Input (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
Machine-readable coded data disposed on or in a substrate in accordance with a layout, and method of generating such coded data, The layout has six-fold rotational symmetry and includes 6 identical sub-layouts rotated 1/6 revolutions apart about a center of rotational symmetry of the layout. The coded data is disposed in accordance with each sub-layout including rotation - indicating data that distinguishes the rotation of that sub-layout from the rotation of at least one other sub-layout within the layout. In one embodiment, the symbols of the sub-layouts are interleaved with each other</ SDOAB>
Claims (8)
1. Machine-readable coded data disposed on or in a substrate in accordance with a layout, the layout having six-fold rotational symmetry, the layout including six identical sub-layouts rotated 1/6 revolutions apart about a center of rotational symmetry of the layout, the coded data disposed in accordance with each sub-lay-out including rotation-indicating data that distinguishes the rotation of that sub-lay-out from the rotation of at least one other sub-layout within the layout.
2. Machine-readable coded data according to claim 1, wherein the rota-tion-indicating data distinguishes the rotation of the sub-layout from the rotation of each of the other sub-layouts within the layout.
3. Machine-readable coded data according to claim 1 or claim 2, wherein the coded data is redundantly encoded and the coded data of each sub-layout includes at least one coded data codeword.
4. Machine-readable coded data according to claim 3, wherein the coded data is redundantly encoded using a Reed-Solomon encoding.
5. Machine-readable coded data according to claim 1, wherein each sub-lay-out defines a plurality of positions of data elements, the sub-layouts being inter-leaved with each other without any two data elements overlapping each other.
6. Machine-readable coded data according to claim 1, wherein the layout is repeated on the substrate.
7. Machine-readable coded data according to claim 6, wherein the layouts are packed together on the substrate.
8. Machine-readable coded data according to claim 1, wherein the layout is hexagonal.
10. Machine-readable coded data according to claim 1, including one or more target features for enabling preliminary location and rotation of the layout to be determined by a machine used to read the coded data.
11. Machine-readable coded data according to claim 10, wherein the target features are configured to enable perspective correction of the coded data of the, or each, layout upon reading by the machine.
12. Machine-readable coded data according to claim 11, including at least four of the target features.
13. Machine-readable coded data according to any one of claims 9 to 11, including a plurality of the layouts, wherein at least some of the target features are shared by at least two of the layouts.
14. Machine-readable coded data according to claim 1, the coded data being printed onto the substrate.
15. Machine-readable coded data according to claim 14, wherein the coded data is printed onto the surface in ink that is of low-visibility or is invisible to an aver-age unaided human eye.
16. Machine-readable coded data according to claim 15, wherein the ink is an infrared ink that is substantially invisible to an average unaided human eye.
17. Machine-readable coded data according to claim 1, wherein the coded data of each layout or sub-layout defines user data.
18. Machine-readable coded data according to claim 17, wherein the user data includes location data indicative of a position of the layout pattern relative to a region of the surface.
19. Machine-readable coded data according to claim 17, wherein the user data includes identification data identifying a region of the surface within which the lay-out is disposed.
20. Machine-readable coded data according to any one of claims 17 to 19, wherein the user data includes function data identifying a function to be performed upon reading of the layout pattern or sub-pattern by the machine.
21. Machine-readable coded data according to claim 1, wherein at least some of the coded data is not disposed in the sub-layouts.
22. A surface bearing machine-readable coded data in accordance with any one of the preceding claims.
23. A surface according to claim 20, the surface being flat or curved.
24. A surface according to claim 22, further including visible markings.
25. A surface according to claim 24, wherein the visible markings include any one or more of the following:
text;
graphics;
images;
forms;
fields; and buttons.
26. A surface according to claim 24, wherein the visible marking are disposed adjacent to, or coincident with, at least some of the coded data.
27. A surface according to claim 22, the surface being defined by a substrate.
28. A surface according to claim 27, wherein the substrate is paper, card or another laminar medium.
29. A surface according to claim 22, configured for use as an interface surface for enabling user interaction with a computer.
30. A method of generating an interface surface, including the steps of:
receiving, in a printer, user data;
generating machine-readable coded data incorporating the user data, in accordance with claim 17; and printing the coded data onto a substrate.
31. A method according to claim 30, further including the step of printing visible markings on the substrate.
32. A method according to claim 31, wherein the coded data and visible mark-ings are printed onto the substrate substantially simultaneously.
33. A method of using a sensing device to read machine-readable coded data according to any one of claims 1 to 21, the method including the steps of:
(a) reading, using the sensing device, the coded data of the layout;
(b) decoding the coded data of at least one of the sub-layouts of the layout, thereby determining at least the rotation-indicating data of that sub-layout;
and (c) using the rotation-indicating data to determine a rotational position of at least one of the remaining sub-layouts to be decoded.
34. A method according to claim 33, wherein step (a) includes the substeps of:
imaging the substrate to generate an image thereof;
processing the image to locate one or more target features of the coded data; and on the basis of the located target features, determining a position of at least one of the sub-layouts.
10. Machine-readable coded data according to claim 1, including one or more target features for enabling preliminary location and rotation of the layout to be determined by a machine used to read the coded data.
11. Machine-readable coded data according to claim 10, wherein the target features are configured to enable perspective correction of the coded data of the, or each, layout upon reading by the machine.
12. Machine-readable coded data according to claim 11, including at least four of the target features.
13. Machine-readable coded data according to any one of claims 9 to 11, including a plurality of the layouts, wherein at least some of the target features are shared by at least two of the layouts.
14. Machine-readable coded data according to claim 1, the coded data being printed onto the substrate.
15. Machine-readable coded data according to claim 14, wherein the coded data is printed onto the surface in ink that is of low-visibility or is invisible to an aver-age unaided human eye.
16. Machine-readable coded data according to claim 15, wherein the ink is an infrared ink that is substantially invisible to an average unaided human eye.
17. Machine-readable coded data according to claim 1, wherein the coded data of each layout or sub-layout defines user data.
18. Machine-readable coded data according to claim 17, wherein the user data includes location data indicative of a position of the layout pattern relative to a region of the surface.
19. Machine-readable coded data according to claim 17, wherein the user data includes identification data identifying a region of the surface within which the lay-out is disposed.
20. Machine-readable coded data according to any one of claims 17 to 19, wherein the user data includes function data identifying a function to be performed upon reading of the layout pattern or sub-pattern by the machine.
21. Machine-readable coded data according to claim 1, wherein at least some of the coded data is not disposed in the sub-layouts.
22. A surface bearing machine-readable coded data in accordance with any one of the preceding claims.
23. A surface according to claim 20, the surface being flat or curved.
24. A surface according to claim 22, further including visible markings.
25. A surface according to claim 24, wherein the visible markings include any one or more of the following:
text;
graphics;
images;
forms;
fields; and buttons.
26. A surface according to claim 24, wherein the visible marking are disposed adjacent to, or coincident with, at least some of the coded data.
27. A surface according to claim 22, the surface being defined by a substrate.
28. A surface according to claim 27, wherein the substrate is paper, card or another laminar medium.
29. A surface according to claim 22, configured for use as an interface surface for enabling user interaction with a computer.
30. A method of generating an interface surface, including the steps of:
receiving, in a printer, user data;
generating machine-readable coded data incorporating the user data, in accordance with claim 17; and printing the coded data onto a substrate.
31. A method according to claim 30, further including the step of printing visible markings on the substrate.
32. A method according to claim 31, wherein the coded data and visible mark-ings are printed onto the substrate substantially simultaneously.
33. A method of using a sensing device to read machine-readable coded data according to any one of claims 1 to 21, the method including the steps of:
(a) reading, using the sensing device, the coded data of the layout;
(b) decoding the coded data of at least one of the sub-layouts of the layout, thereby determining at least the rotation-indicating data of that sub-layout;
and (c) using the rotation-indicating data to determine a rotational position of at least one of the remaining sub-layouts to be decoded.
34. A method according to claim 33, wherein step (a) includes the substeps of:
imaging the substrate to generate an image thereof;
processing the image to locate one or more target features of the coded data; and on the basis of the located target features, determining a position of at least one of the sub-layouts.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/AU2002/001634 WO2004051557A1 (en) | 2002-12-03 | 2002-12-03 | Rotationally symmetric tags |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2508126A1 true CA2508126A1 (en) | 2004-06-17 |
| CA2508126C CA2508126C (en) | 2010-02-23 |
Family
ID=32398635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2508126A Expired - Fee Related CA2508126C (en) | 2002-12-03 | 2002-12-03 | Rotationally symmetric tags |
Country Status (9)
| Country | Link |
|---|---|
| US (4) | US7549595B2 (en) |
| EP (1) | EP1567975B1 (en) |
| JP (1) | JP4348302B2 (en) |
| CN (1) | CN100392673C (en) |
| AT (1) | ATE465468T1 (en) |
| AU (1) | AU2002342445B2 (en) |
| CA (1) | CA2508126C (en) |
| DE (1) | DE60236111D1 (en) |
| WO (1) | WO2004051557A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6822639B1 (en) * | 1999-05-25 | 2004-11-23 | Silverbrook Research Pty Ltd | System for data transfer |
| JP4804125B2 (en) * | 2005-11-24 | 2011-11-02 | キヤノン株式会社 | Two-dimensional code, two-dimensional code detection method, and two-dimensional code detection apparatus |
| DE102006005202A1 (en) * | 2006-02-02 | 2007-08-09 | Hochschule Darmstadt University Of Applied Sciences | Method for decoding information |
| WO2008095226A1 (en) * | 2007-02-08 | 2008-08-14 | Silverbrook Research Pty Ltd | Bar code reading method |
| TW200925866A (en) * | 2007-09-21 | 2009-06-16 | Silverbrook Res Pty Ltd | Printer driver for interactive printer |
| WO2010015881A1 (en) * | 2008-08-05 | 2010-02-11 | Mehdy Davary Dolat Abady | Position encoding using an invisible pattern data matrix |
| WO2013119234A1 (en) | 2012-02-09 | 2013-08-15 | Hewlett - Packard Development Company, L.P. | Forensic verification utilizing forensic markings inside halftones |
| US11023648B2 (en) * | 2017-12-12 | 2021-06-01 | Siemens Industry Software Inc. | Puzzle-based pattern analysis and classification |
| CN108734700B (en) * | 2018-04-24 | 2021-06-11 | 信利（惠州）智能显示有限公司 | Method and device for detecting defects of blind area of substrate, computer and storage medium |
Family Cites Families (50)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8501460A (en) | 1985-05-22 | 1986-12-16 | Philips Nv | METHOD FOR IDENTIFYING OBJECTS INCLUDING A CODE FIELD WITH DOT CODE, DEVICE FOR IDENTIFYING SUCH A DOT CODE, AND PRODUCT USING SUCH A DOT CODE |
| US4864618A (en) * | 1986-11-26 | 1989-09-05 | Wright Technologies, L.P. | Automated transaction system with modular printhead having print authentication feature |
| JPS63240688A (en) | 1987-03-27 | 1988-10-06 | Kajima Corp | Circular code |
| US4924078A (en) * | 1987-11-25 | 1990-05-08 | Sant Anselmo Carl | Identification symbol, system and method |
| US4896029A (en) * | 1988-04-08 | 1990-01-23 | United Parcel Service Of America, Inc. | Polygonal information encoding article, process and system |
| US4939354A (en) * | 1988-05-05 | 1990-07-03 | Datacode International, Inc. | Dynamically variable machine readable binary code and method for reading and producing thereof |
| US5635697A (en) * | 1989-03-01 | 1997-06-03 | Symbol Technologies, Inc. | Method and apparatus for decoding two-dimensional bar code |
| US5051736A (en) * | 1989-06-28 | 1991-09-24 | International Business Machines Corporation | Optical stylus and passive digitizing tablet data input system |
| FR2649510B1 (en) | 1989-07-06 | 1991-12-20 | Collot Richard | METHOD AND SYSTEMS FOR VERIFYING SIGNATURES WITH OPTIMIZATION OF STATIC PARAMETERS |
| US5992752A (en) | 1993-11-24 | 1999-11-30 | Metrologic Instruments, Inc. | Internet-based system for enabling information-related transactions over the internet using Java-enabled internet terminals provided with bar code symbol readers for reading Java-Applet encoded bar code symbols |
| US5202552A (en) * | 1991-04-22 | 1993-04-13 | Macmillan Bloedel Limited | Data with perimeter identification tag |
| US5477012A (en) * | 1992-04-03 | 1995-12-19 | Sekendur; Oral F. | Optical position determination |
| US5852434A (en) * | 1992-04-03 | 1998-12-22 | Sekendur; Oral F. | Absolute optical position determination |
| JP2502914B2 (en) | 1992-07-31 | 1996-05-29 | インターナショナル・ビジネス・マシーンズ・コーポレイション | DATA TRANSFER METHOD AND DEVICE |
| DK0670555T3 (en) | 1992-09-28 | 2000-09-18 | Olympus Optical Co | Registration medium with bar code and information registration system |
| US5453762A (en) | 1993-01-20 | 1995-09-26 | Hitachi, Ltd. | Systems for processing information and identifying individual |
| JPH0773405A (en) | 1993-09-02 | 1995-03-17 | Sharp Corp | Magnetic recording and reproducing device |
| US6182901B1 (en) * | 1993-12-22 | 2001-02-06 | Xerox Corporation | Orientational disambiguation for self-clocking glyph codes |
| US5449896A (en) * | 1993-12-22 | 1995-09-12 | Xerox Corporation | Random access techniques for use with self-clocking glyph codes |
| US5652412A (en) * | 1994-07-11 | 1997-07-29 | Sia Technology Corp. | Pen and paper information recording system |
| US5661506A (en) * | 1994-11-10 | 1997-08-26 | Sia Technology Corporation | Pen and paper information recording system using an imaging pen |
| DE69523024T2 (en) | 1994-12-16 | 2002-03-14 | Hyundai Electronics America | Digitizing pen and operating procedures |
| US5929429A (en) | 1995-01-03 | 1999-07-27 | Xerox Corporation | Distributed dimensional labeling for dimensional characterization of border-type embedded data blocks |
| US5572010A (en) * | 1995-01-03 | 1996-11-05 | Xerox Corporation | Distributed type labeling for embedded data blocks |
| US5531429A (en) | 1995-03-29 | 1996-07-02 | National Computer Systems, Inc. | Variable printing and selective binding of booklets |
| US5978773A (en) | 1995-06-20 | 1999-11-02 | Neomedia Technologies, Inc. | System and method for using an ordinary article of commerce to access a remote computer |
| US6081261A (en) | 1995-11-01 | 2000-06-27 | Ricoh Corporation | Manual entry interactive paper and electronic document handling and processing system |
| US5692073A (en) * | 1996-05-03 | 1997-11-25 | Xerox Corporation | Formless forms and paper web using a reference-based mark extraction technique |
| US6386453B1 (en) | 1996-11-25 | 2002-05-14 | Metrologic Instruments, Inc. | System and method for carrying out information-related transactions |
| US5937110A (en) * | 1996-12-20 | 1999-08-10 | Xerox Corporation | Parallel propagating embedded binary sequences for characterizing objects in N-dimensional address space |
| JPH10207841A (en) | 1997-01-22 | 1998-08-07 | Mitsubishi Electric Corp | Pen input personal information terminal equipment |
| JPH10326331A (en) * | 1997-03-24 | 1998-12-08 | Olympus Optical Co Ltd | Recording medium with dot code, and code reader |
| JPH1165088A (en) | 1997-08-19 | 1999-03-05 | Canon Inc | Substrate for manufacturing device |
| US6518950B1 (en) | 1997-10-07 | 2003-02-11 | Interval Research Corporation | Methods and systems for providing human/computer interfaces |
| US6050490A (en) | 1997-10-31 | 2000-04-18 | Hewlett-Packard Company | Handheld writing device and related data entry system |
| US6330976B1 (en) * | 1998-04-01 | 2001-12-18 | Xerox Corporation | Marking medium area with encoded identifier for producing action through network |
| WO1999050751A1 (en) | 1998-04-01 | 1999-10-07 | Xerox Corporation | Routing document identifiers |
| US6685095B2 (en) * | 1998-05-05 | 2004-02-03 | Symagery Microsystems, Inc. | Apparatus and method for decoding damaged optical codes |
| US6141441A (en) * | 1998-09-28 | 2000-10-31 | Xerox Corporation | Decoding data from patterned color modulated image regions in a color image |
| US6964374B1 (en) * | 1998-10-02 | 2005-11-15 | Lucent Technologies Inc. | Retrieval and manipulation of electronically stored information via pointers embedded in the associated printed material |
| SE516522C2 (en) * | 1999-05-28 | 2002-01-22 | Anoto Ab | Position determining product for digitization of drawings or handwritten information, obtains displacement between symbol strings along symbol rows when symbol strings are repeated on symbol rows |
| AU2002952259A0 (en) * | 2002-10-25 | 2002-11-07 | Silverbrook Research Pty Ltd | Methods and apparatus |
| AU2003900983A0 (en) * | 2003-03-04 | 2003-03-20 | Silverbrook Research Pty Ltd | Methods, systems and apparatus (NPT023) |
| US7108192B2 (en) * | 1999-09-17 | 2006-09-19 | Silverbrook Research Pty Ltd | Rotationally symmetric tags |
| SE517445C2 (en) * | 1999-10-01 | 2002-06-04 | Anoto Ab | Position determination on a surface provided with a position coding pattern |
| EP1143372B1 (en) * | 2000-04-06 | 2006-03-22 | Seiko Epson Corporation | Method of and apparatus for reading a two-dimensional bar code symbol and data storage medium |
| US7175095B2 (en) * | 2001-09-13 | 2007-02-13 | Anoto Ab | Coding pattern |
| CA2502483C (en) * | 2002-10-25 | 2010-12-21 | Silverbrook Research Pty Ltd | Orientation-indicating cyclic position codes |
| JP3996520B2 (en) * | 2003-01-30 | 2007-10-24 | 株式会社デンソーウェーブ | Two-dimensional information code and generation method thereof |
| US7178719B2 (en) * | 2003-04-07 | 2007-02-20 | Silverbrook Research Pty Ltd | Facilitating user interaction |
-
2002
- 2002-12-03 AT AT02779045T patent/ATE465468T1/en not_active IP Right Cessation
- 2002-12-03 JP JP2004555849A patent/JP4348302B2/en not_active Expired - Fee Related
- 2002-12-03 CA CA2508126A patent/CA2508126C/en not_active Expired - Fee Related
- 2002-12-03 DE DE60236111T patent/DE60236111D1/en not_active Expired - Lifetime
- 2002-12-03 AU AU2002342445A patent/AU2002342445B2/en not_active Ceased
- 2002-12-03 US US10/537,159 patent/US7549595B2/en not_active Expired - Fee Related
- 2002-12-03 WO PCT/AU2002/001634 patent/WO2004051557A1/en active Application Filing
- 2002-12-03 CN CNB028299906A patent/CN100392673C/en not_active Expired - Fee Related
- 2002-12-03 EP EP02779045A patent/EP1567975B1/en not_active Expired - Lifetime
-
2009
- 2009-05-31 US US12/475,554 patent/US7984858B2/en not_active Expired - Fee Related
-
2011
- 2011-06-16 US US13/162,485 patent/US8215566B2/en not_active Expired - Fee Related
-
2012
- 2012-05-29 US US13/482,882 patent/US20120234920A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20120234920A1 (en) | 2012-09-20 |
| ATE465468T1 (en) | 2010-05-15 |
| JP4348302B2 (en) | 2009-10-21 |
| US8215566B2 (en) | 2012-07-10 |
| EP1567975B1 (en) | 2010-04-21 |
| CN1695157A (en) | 2005-11-09 |
| CN100392673C (en) | 2008-06-04 |
| JP2006508454A (en) | 2006-03-09 |
| US20090236427A1 (en) | 2009-09-24 |
| US7549595B2 (en) | 2009-06-23 |
| US20110240743A1 (en) | 2011-10-06 |
| DE60236111D1 (en) | 2010-06-02 |
| US7984858B2 (en) | 2011-07-26 |
| CA2508126C (en) | 2010-02-23 |
| AU2002342445B2 (en) | 2006-10-19 |
| WO2004051557A1 (en) | 2004-06-17 |
| US20060146069A1 (en) | 2006-07-06 |
| EP1567975A1 (en) | 2005-08-31 |
| EP1567975A4 (en) | 2006-04-12 |
| AU2002342445A1 (en) | 2004-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2502483A1 (en) | Orientation-indicating cyclic position codes | |
| KR100815843B1 (en) | Encoded paper for optical reading | |
| US10176658B2 (en) | Magnetic watermarking of a printed substrate by metameric rendering | |
| TW492242B (en) | Recording of information | |
| US9535420B2 (en) | Matrix code symbols for accurate robot tracking | |
| US7510125B2 (en) | Multi-dimensional symbologies and related methods | |
| KR101046162B1 (en) | Two-dimensional code and code decoding method, printed publication using this two-dimensional code | |
| TWI518599B (en) | A printed matter showing a two-dimensional code | |
| US20130140354A1 (en) | Dual resolution two-dimensional barcode | |
| EP1188142A1 (en) | Recording of information | |
| CA2340882A1 (en) | Method for embedding non-intrusive encoded data in printed matter and system for reading same | |
| CA2508126A1 (en) | Rotationally symmetric tags | |
| EP1641236A3 (en) | Image processing apparatus | |
| JP5445060B2 (en) | Secret sharing method of character information and printed material used therefor | |
| WO2008138224A1 (en) | Method of embedding computer data at the outside of character script | |
| TWI770123B (en) | Information processing apparatus, program, information processing method and information processing system | |
| US11429201B2 (en) | Surfaces with information marks | |
| JP2002215319A (en) | Coordinate input device | |
| GB2421617A (en) | Products with data encoding pattern |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20131203 |