PDF417

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Stacking is the structural idea behind PDF417: rows of linear codewords sit one above another, each row carrying start and stop patterns plus a row indicator, so a reader can reassemble the symbol even when rows are scanned out of order or partially missed. Ynjiun Wang designed it at Symbol Technologies in 1991. Capacity reaches 1,850 alphanumeric or 2,710 numeric characters with selectable Reed-Solomon error correction, and the aspect ratio can be varied from 3:1 to 1:3 to suit the available label area. United States driver's licences, airline boarding passes, and a range of government identity documents specify it. Modules are 0.254 mm at nominal size with two-module quiet zones, and binary payloads are supported.

  

  
Un código de barras lineal apilado que codifica hasta 1850 caracteres alfanuméricos en varias filas, con corrección de errores Reed-Solomon integrada. PDF417 es el formato estándar para las licencias de conducir en EE. UU., las tarjetas de embarque de aerolíneas y otros documentos de identificación oficiales que requieren gran capacidad de datos en un formato imprimible.

  

  




  

    

    

      

        
PDF417

        
        Stacked
        
      

      
      
      

        Type
        Stacked
      

      
      

      

        Data Length
        variable
      

      
      

      

        Character Set
        ASCII completo + datos binarios
      

      
      

      

        Year
        1991
      

      
    

  






  



  

  




  
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Related Terms

  

    
    
      PDF417
    
    
  





  



  



  









  
Preguntas Frecuentes

  
  

    ¿Qué es un código de barras PDF417?
    
PDF417 es un código de barras 2D lineal apilado capaz de codificarhasta 1,850 caracteres ASCII o 1,108 bytes de datos binarios en unpatrón rectangular.

  

  
  

    ¿Dónde se usa PDF417?
    
PDF417 se usa en licencias de conducir de EE. UU. (estándar AAMVA),tarjetas de embarque de aerolíneas y documentos de identificacióngubernamentales.

  

  
  

    ¿En qué se diferencia PDF417 de QR Code?
    
PDF417 es un código de barras lineal apilado que pueden leer losescáneres láser; QR Code es una matriz 2D que requiere un sensor deimagen. PDF417 es más grande para los mismos datos.