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Barcode

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Barcode

  1. 1. BAR CODE TECHNOLOGY AND ITS APPLICATION TO LIBRARY SERVICES I R N GOUDAR HEAD, ICAST NATIONAL AEROSPACE LABORATORIES BANGALORE-560017
  2. 2. BAR CODE TECHNOLOGY It is an automatic identification technology Bar code is a predefined format of dark bars and white spaces Structured to contain a specific piece of information It allows real-time data to be collected accurately and rapidly Combination of barcode technology with computer and application software improves performance, productivity and profitability
  3. 3. Discrete Symbology
  4. 4. Continuous Symbology
  5. 5. DATA ENTRY TECHNIQUES MANUAL  AUTOMATIC METHODS METHODS – KEYBOARD – OPTICAL CHARACTER OPERATION RECOGNITION – 1 ERROR/300 – MAGNETIC INK CHARACTERS – MACHINE VISION – RADIO FREQUENCY IDENTIFICATION – SMART CARDS – BAR CODE
  6. 6. BENEFITS OF BAR CODING REPRESENT UNIQUE IDENTITY OF A PRODUCT ACCURACY OF DATA INPUT (ERROR FREE) AID EFFECTIVE MANAGEMENT OF RESOURCES AND INVENTORIES LABOUR SAVINGS BY AVOIDING MANUAL SYSTEM
  7. 7. BENEFITS … COST EFFICIENT REAL TIME DATA COLLECTION MEASUREMENT OF WORK IN PROGRESS THROUGHOUT THE FACTORY RAPID ACCESS TO TOTAL PRODUCTION COSTS MORE ACCURATE DESPATCH
  8. 8. BAR CODE TERMINOLOGYo BAR - The darker, non reflective element of a Bar Codeo BI-DIRECTIONAL SYMBOL - A Bar Code symbol format which permits reading in either direction across the bars and spaceso CHECK DIGIT - A calculated character included within the Bar Code for error detectiono FIXED BEAM SCANNER - A stationary Bar Code Scanner. The symbol must be moved through the light beam to be read
  9. 9. TERMINOLOGY … HAND-HELD SCANNER – A scanner held and operated by a human operator INTER-CHARACTER GAP – The space between the bars or spaces MOVING BEAM SCANNER – A Bar Code scanner that uses a moving light beam to dynamically scan and decode a Bar Code symbol
  10. 10. TERMINOLOGY … SPACE – The lighter, reflective element of a Bar Code START CHARACTER – A special pattern of bars and spaces used to identify the beginning of a Bar Code symbol STOP CHARACTER – A special pattern of bars and spaces used to identify the end of a Bar Code symbol
  11. 11. Bar-code system
  12. 12. Thermal Transfer Printer
  13. 13. BAR CODE SCANNERS A device used to extract information optically from a Bar Code Bar Code symbol consists of series of vertical dark bars separated by light spaces When illuminated reflected light is detected by electro optical sensor The intensity of reflected light from the
  14. 14. SCANNERS … Reflected light is converted into electrical voltage signals Analog voltages are digitized into raw data The decoder converts this data into the character data representation of the symbol’s code
  15. 15. TYPES OF SCANNERS (READERS) CONTACT READERS – Must touch or come in close proximity of symbol – Good where the label cannot be placed in an easy- to-view position – Normally hand-held/stationary units – Common type is pen/wand reader – A high-density resolution wand used to read a low- density symbol might see an ink spot as bar or an ink void as a space
  16. 16. CONTACT READERS … A low-resolution wand may not be able to recognise a narrow bar of high-density symbol Positioned angle of wand to the surface and movement speed across the symbol are key parameters
  17. 17. Contact Readers
  18. 18. NON-CONTACT READERS Reader need not come in contact with symbol Scan distance may be from 6” to several feet depending upon symbol size and scanner design Hand-held, fixed beam readers
  19. 19. Table mounted fixed beam reader
  20. 20. Table mounted fixed beam reader
  21. 21. Hand-Held moving beam readers
  22. 22. Fixed beam slot scanner
  23. 23. CCD Scanner
  24. 24. Portable Data Collection Equipment
  25. 25. BAR CODE APPLICATIONS INVENTORY CONTROL – Portable readers WORK-IN PROCESS TRACKING (WIP) COMPANY INVENTORY – Raw materials – WIP (Components, Assemblies, Semi finished Products) – Finished Products
  26. 26. APPLICATIONS … SHIPPING ELECTRONIC DATA INTERCHANGE (EDI) – Direct communication between computers of two companies (Manufacturer & Vendor) – Industry-wide EDI standards – Reduces cost and saves time of business transaction
  27. 27. APPLICATIONS … RETAIL APPLICATIONS – Super markets – Counter-mounted Bar Code scanners – Universal Product Code (UPC) – Price and description information WARE HOUSING HEALTH CARE APPLICATIONS – Drugs, devices, instruments – Identification of expiry date – Blood banking  Blood group  Expiry date  Donor traceability
  28. 28. APPLICATIONS …
  29. 29. BAR CODING IN LIBRARIES EFFECTIVE LIBRARY NEEDS EACH DOCUMENT BAR CODED TWO LABELS PREFERABLY LABEL TO CONTAIN – Accession number equivalent Bar Code – Call number – Institution logo advantageous ISBN BAR CODE COULD BE USED
  30. 30. BARCODING IN LIBRARIES … DATABASE PROGRAM LINKS THE BAR CODE TO BIBLIOGRAPHIC DETAILS OF DOCUMENTS AUTHORISED ID CARD INCLUDES BAR CODE – Card could be used by library – Institutional ID card – Social security number BAR CODE READER INTERFACED TO COMPUTER TRACKING OF BOOKS
  31. 31. INCORPORATING BAR CODE IN LIBRARIES THE TYPICAL SEQUENCE WOULD BE – Database creation (OPAC) – Generate Bar Code for all transact able documents – Bar Code membership cards – Installation of suitable scanning equipment – Set different criteria for transactions
  32. 32. ADVANTAGES OF BAR CODE IN LIBRARIESR Quick and error free entry of access and membership codesf Ensures total integrity of collected datat No queuing up at check out/check in counters Avoids piling up of data entry work for counter staff Aids generation of suitable reminders to delinquent borrowerso Stock verification made easy
  33. 33. Thank You

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