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LECTURA DEL CODIGO
DE BARRAS
SE BASA EN LA
INTERPRETACION DE
ANCHOS RELATIVOS DE
BARRAS CLARAS Y
OBSCURAS
ALTERNADAS(RAYAS
NEGRAS Y ESPACIOS
BLANCOS)
SE REALIZA POR MEDIO DE
UN DISPOCITIVO SENSOR
ESTE PROCESO EN PO
REFLEXION.
SE DEBE DESPLAZAR EL
CODIGO DE BARRAS POR EL
SENSOR ESTATICO.
DEBE DISCRIMINAR CON
PRESION EL COTRASTE ENTRE
ZONAS CLARAS Y OBSCURAS.
AUNQUE EN REALIDAD LOS
SISTEMAS DE
CODIFICACIÓN NO
DISTINGUEN ENTRE BARRAS
CLARAS Y OBSCURAS POR
LO CONTRARIO SE BASAN
EN LOS TIPOS DE BARRAS.
TAMBIÉN EXISTE UN DIGITO DE CONTROL (el ultimo digito de la
serie)
ESTE CONTIENE TRES BARRAS DE SINCRONIZACIÓN QUE SE
UTILIZAN PARA VER LA RELACIÓN DURACIÓN DE ESTADO Y
ANCHO DE BARRA.
UPC 12 (universal Product Code), ES UN ESTÁNDAR DE
CODIFICACIÓN QUE UTILIZA 12 DÍGITOS.
RECONOCIMIENTO DE LAS TRES BARRAS
INÍCIALES DE SINCRONIZACIÓN
LECTURA DE SEIS CARACTERES O DÍGITOS
RECONOCIMIENTO DE LAS TRES BARRAS DE
SINCRONIZACIÓN CENTRALES
LECTURA DE LOS SEIS CARACTERES O DÍGITOS
RESTANTES
RECONOCIMIENTO DE LAS TRES BARRAS DE
SINCRONIZACIÓN FINALES
COMPROBACIÓN DE LA CONSISTENCIA DEL
DIGITO VERIFICADOR
SE EFECTÚAN POR MEDIO
EDI
A TRAVÉS DE DISPOSITIVOS
QUE SE CLASIFICAN EN :
•LECTORES DE CONTACTO
•LECTORES A DISTANCIA
•Lectores de rayo fijo
•Lectores de rayo móvil

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Descripcion tecnica del codigo de barras

  • 1.
  • 2. LECTURA DEL CODIGO DE BARRAS SE BASA EN LA INTERPRETACION DE ANCHOS RELATIVOS DE BARRAS CLARAS Y OBSCURAS ALTERNADAS(RAYAS NEGRAS Y ESPACIOS BLANCOS) SE REALIZA POR MEDIO DE UN DISPOCITIVO SENSOR ESTE PROCESO EN PO REFLEXION.
  • 3. SE DEBE DESPLAZAR EL CODIGO DE BARRAS POR EL SENSOR ESTATICO. DEBE DISCRIMINAR CON PRESION EL COTRASTE ENTRE ZONAS CLARAS Y OBSCURAS. AUNQUE EN REALIDAD LOS SISTEMAS DE CODIFICACIÓN NO DISTINGUEN ENTRE BARRAS CLARAS Y OBSCURAS POR LO CONTRARIO SE BASAN EN LOS TIPOS DE BARRAS.
  • 4. TAMBIÉN EXISTE UN DIGITO DE CONTROL (el ultimo digito de la serie) ESTE CONTIENE TRES BARRAS DE SINCRONIZACIÓN QUE SE UTILIZAN PARA VER LA RELACIÓN DURACIÓN DE ESTADO Y ANCHO DE BARRA. UPC 12 (universal Product Code), ES UN ESTÁNDAR DE CODIFICACIÓN QUE UTILIZA 12 DÍGITOS.
  • 5. RECONOCIMIENTO DE LAS TRES BARRAS INÍCIALES DE SINCRONIZACIÓN LECTURA DE SEIS CARACTERES O DÍGITOS RECONOCIMIENTO DE LAS TRES BARRAS DE SINCRONIZACIÓN CENTRALES LECTURA DE LOS SEIS CARACTERES O DÍGITOS RESTANTES RECONOCIMIENTO DE LAS TRES BARRAS DE SINCRONIZACIÓN FINALES COMPROBACIÓN DE LA CONSISTENCIA DEL DIGITO VERIFICADOR
  • 6.
  • 7. SE EFECTÚAN POR MEDIO EDI A TRAVÉS DE DISPOSITIVOS QUE SE CLASIFICAN EN : •LECTORES DE CONTACTO •LECTORES A DISTANCIA •Lectores de rayo fijo •Lectores de rayo móvil