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2D BASICS & EVOLUTION OF 2D SYMBOLOGIES

Learn about the lineage and structure of 2D symbologies, their popularity in various markets, and the evolution from linear to 2D codes.

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2D BASICS & EVOLUTION OF 2D SYMBOLOGIES

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  1. 2D BASICS & EVOLUTION OF 2D SYMBOLOGIES

  2. About your Instructors Matt Van Bogart  Global Channel Manager Joined Microscan in 1996 Held positions in Marketing, Product Management and Sales Juan Worle Technical Training Coordinator With Microscan since 1996 Held positions in Service, Applications, Sales and Marketing

  3. About Microscan Track, Trace & Control Leader • Technology innovator and leader • Focused on Track, Trace & Control solutions • Capabilities from barcode reading to precise inspection • ISO 9001:2000 certified • Recognized for quality leadership • Global customer base • Worldwide locations - local support • Strong global partner network • A Spectris company

  4. About Microscan Proven Technology Leadership • Microscan is founded on technology Innovation • Inventor of laser diode bar code scanner • Inventor of Data Matrix symbology • 27+ years of innovation in Auto ID & Machine Vision • Microscan continued technology leadership today • Long list of “firsts” for Auto ID & Vision technologies • Most extensive product line for Track, Trace & Control • Others follow Microscan’s new product development • Microscan unique solutions & patented technology • Hold 90+ technology patents in US • Pending 30+ additional technology patents • Extensive library of robust machine vision algorithms/tools

  5. About Microscan Worldwide Presence • Headquarters Renton, WA (Seattle) • Sales/Service/Support Amsterdam, Brussels, Munich, Istanbul, … Beijing, Guangzhou, Seoul, Shanghai Singapore, Tokyo, … Atlanta, Chicago, Dallas, Detroit, Minneapolis, Nashua, Newark, Renton, … • Design/Engineering Renton, WA & Nashua, NH • Manufacturing Renton, WA • Distribution/Solution Partners 300+ locations worldwide

  6. Convergence of technology

  7. Today’s Objectives By the end of this Webinar, you will know: • The lineage of 2D Symbologies • The structure of common 2D Symbologies • Why 2D Symbologies are so popular in so many markets

  8. Today’s Topics • Evolution from Linear to 2D • 2D Stacked Symbologies: PDF417 • 2D Matrix Symbologies: Data Matrix • 2D Matrix Symbologies: QR Code

  9. Evolution from Linear to 2D • As the need for higher capacity codes arose, compact codes were developed • First introduced were 2D stacked: several 1D type codes stacked on top of each other • Then 2D Matrix: data encoded in 2 Directions • 1D symbols encode in one direction, 2D encode in 2 directions • 2D symbols contain more data in less space Code 39 Code 49 PDF 417 QR Code

  10. Evolution from Linear to 2D Early Stacked Symbologies • Code 49, Code 16K • Developed in the late 1980s • Encodes more data than standard linear codes • Sensitive to tilt angles on laser scanners Code 49 is considered the first 2D symbology Code 16K is similar to code 49 but can contain more data and is more efficient

  11. 2D Stacked Symbologies: PDF417 PDF 417 • Parable Data File, 4 bar/space, 17 modules • Introduced in 1990 • AIM Standard • Margins on sides, top, and bottom • Reed-Solomon Error Correction (ECC or ECL) • Levels 0 – 5 • Reduces Truncation: missing characters • Reduces Substitution: incorrect characters • Tilt angle consideration

  12. 2D Matrix Symbologies: Data Matrix History • Developed in mid-1990s • AIM Standard soon follows • Symbol sizes range from 10 x 10, up to 144 x 144 rows x columns • Up to 3116 numeric, 2335 alphanumeric characters • Small, easy to print and decode, secure • Most common in DPM applications Microscan holds the original Data Matrix patents

  13. 2D Matrix Symbologies: Data Matrix Structure • Element • Also known as: cell, module • Square shaped cell that encodes one bit of binary data “0” or “1” • Consistent size throughout code • The color of binary 1 is the same as the L-pattern • Element measurement determines resolution • Quiet zone • Also known as: margin, no print zone • Required: 1 element size around all sides • For best performance: 20% of symbol size

  14. 2D Matrix Symbologies: Data Matrix Structure • Locating Pattern • Clock Pattern:Two sides are alternating light and dark elements. Used for synchronizing the decoding process. • L-Pattern: Two solid lines, forming an “L” • Data Region • The area inside the finder pattern • Contains data and error correction

  15. 2D Matrix Symbologies: Data Matrix Data Regions • High capacity symbols contain multiple data regions • Each data region can contain up to 88 numeric or 64 alpha/numeric characters • Error correction repeats through the entire symbol Multi-Region Data Matrix Data Region Alignment Patterns

  16. 2D Matrix Symbologies: Data Matrix Error Correction • ECC 0 through ECC 140 • Original versions • Convolutional check digit • ECC 200 • Introduced in the late 1990s • Reed-Solomon calculation allows up to 60% of the data region to be damaged • The current ‘standard’ • Allows rectangular codes • Upper right corner element is always binary zero ECC 0 – ECC 140 ECC 200 8 x 32 ECC 200 ‘Rectangular’

  17. 2D Matrix Symbologies: QR Code History • Quick Response Code • Introduced in 1994 by Nippondenso • Sizes from 21x21 to 177x177 • Up to 4296 alphanumeric, or 1817 Kanji characters • Small, easy to print and decode • Popular in Asia because of simple Kanji & Kana character support • Becoming more popular in retail using smart phones

  18. 2D Matrix Symbologies: QR Code Structure • Element • Cell, module • Square shaped cell that encodes one bit of binary data “0” or “1” • Consistent size throughout code • The color of binary 1 is the same as the position detection pattern • Quiet zone • Margin, no print zone • Minimum of four times the element width (4X) on all sides of the symbol

  19. 2D Matrix Symbologies: QR Code Structure • Locating Patterns • Three position detection patterns are used • to locate the symbol, and determine • orientation • Data Region • The area that contains data and error • correction code words

  20. Error Correction Reed-Solomon Four levels: L, M, Q and H Higher correction levels generate larger codes 2D Matrix Symbologies: QR Code

  21. Introduction to 2D Symbologies Conclusion • Evolution from Linear to 2D • Space constraints: a lot of data in a small amount of space • Error correction: damaged symbols still decode – ideal for DPM • 2D Matrix Symbologies: Data Matrix & QR Code • Similar structure between these 2D Symbologies • Margin • Locating pattern • Data region & Error Correction • Many applications now using 2D technology • Automotive • Electronics • DoD / Aerospace • Document Handling • Packaging • Pharmaceutical

  22. Next session…. Marking & Decoding 2D Symbologies • Proper marking techniques for your application & maximizing readability • Different marking methods available • How a 2D symbol is decoded

  23. Thank you! For more information Website: www.microscan.com • Online courses • Spec sheets • Technology brochures • Support self-help and support request form Instructors: Juan Worle, Technical Training Coordinator Email: jworle@microscan.com Matt Van Bogart,  Global Channel Manager Email: mvanbogart@microscan.com Feedback on this webinar: www.microscan.com/feedback Additional contacts: Product information: info@microscan.com Training: training@microscan.com Support: helpdesk@microscan.com

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