Upload
zorita-craig
View
26
Download
5
Tags:
Embed Size (px)
DESCRIPTION
BAR CODE TECHNOLOGY AND ITS APPLICATION TO LIBRARY SERVICES. I R N GOUDAR HEAD, ICAST NATIONAL AEROSPACE LABORATORIES BANGALORE-560017. BAR CODE TECHNOLOGY. It is an automatic identification technology Bar code is a predefined format of dark bars and white spaces - PowerPoint PPT Presentation
Citation preview
BAR CODE TECHNOLOGY BAR CODE TECHNOLOGY AND AND
ITS APPLICATION ITS APPLICATION TO TO
LIBRARY SERVICESLIBRARY SERVICES
I R N GOUDAR
HEAD, ICAST
NATIONAL AEROSPACE LABORATORIES
BANGALORE-560017
BAR CODE TECHNOLOGYBAR 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
Discrete SymbologyDiscrete Symbology
Continuous SymbologyContinuous Symbology
DATA ENTRY TECHNIQUESDATA ENTRY TECHNIQUES
MANUAL METHODS– KEYBOARD
OPERATION– 1 ERROR/300
CHARACTERS
AUTOMATIC METHODS– OPTICAL CHARACTER
RECOGNITION
– MAGNETIC INK
– MACHINE VISION
– RADIO FREQUENCY IDENTIFICATION
– SMART CARDS
– BAR CODE
BENEFITS OF BAR CODINGBENEFITS 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
BENEFITS …BENEFITS …
COST EFFICIENT
REAL TIME DATA COLLECTION
MEASUREMENT OF WORK IN PROGRESS
THROUGHOUT THE FACTORY
RAPID ACCESS TO TOTAL PRODUCTION COSTS
MORE ACCURATE DESPATCH
BAR CODE TERMINOLOGYBAR 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 spaces
o CHECK DIGIT
- A calculated character included within the Bar Code for error detection
o FIXED BEAM SCANNER
- A stationary Bar Code Scanner. The symbol must be moved through the light beam to be read
TERMINOLOGY …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
TERMINOLOGY …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
Bar-code systemBar-code system
Thermal Transfer PrinterThermal Transfer Printer
BAR CODE SCANNERSBAR CODE SCANNERSA 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 dark bars is
less than that of spaces
SCANNERS …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
TYPES OF SCANNERS (READERS)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
CONTACT READERSCONTACT 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
Contact ReadersContact Readers
NON-CONTACT READERSNON-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
Table mounted fixed beam readerTable mounted fixed beam reader
Table mounted fixed beam readerTable mounted fixed beam reader
Hand-Held moving beam readersHand-Held moving beam readers
Fixed beam slot scannerFixed beam slot scanner
CCD ScannerCCD Scanner
Portable Data Collection EquipmentPortable Data Collection Equipment
BAR CODE APPLICATIONSBAR CODE APPLICATIONSINVENTORY CONTROL
– Portable readers
WORK-IN PROCESS TRACKING (WIP) COMPANY INVENTORY– Raw materials– WIP (Components, Assemblies, Semi finished
Products)– Finished Products
APPLICATIONS …APPLICATIONS …SHIPPINGELECTRONIC DATA INTERCHANGE
(EDI)– Direct communication between computers of
two companies (Manufacturer & Vendor)– Industry-wide EDI standards– Reduces cost and saves time of business
transaction
APPLICATIONSAPPLICATIONS … …RETAIL APPLICATIONS
– Super markets– Counter-mounted Bar Code scanners– Universal Product Code (UPC)– Price and description information
WARE HOUSINGHEALTH CARE APPLICATIONS
– Drugs, devices, instruments– Identification of expiry date– Blood banking
Blood groupExpiry dateDonor traceability
APPLICATIONS …APPLICATIONS …
BAR CODING IN LIBRARIESBAR CODING IN LIBRARIES
EFFECTIVE LIBRARY NEEDS EACH DOCUMENT BAR CODED
TWO LABELS PREFERABLYLABEL TO CONTAIN
– Accession number equivalent Bar Code
– Call number
– Institution logo advantageous
ISBN BAR CODE COULD BE USED
BARCODING IN LIBRARIES …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
INCORPORATING BAR INCORPORATING BAR CODE IN LIBRARIESCODE 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
ADVANTAGES OF BAR CODE ADVANTAGES OF BAR CODE IN LIBRARIESIN LIBRARIES
Quick and error free entry of access and membership codes
Ensures total integrity of collected data 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
borrowers Stock verification made easy
Thank You