PDF417: 2D Barcode Generator Software

Das von TEC-IT entwickelte 2D Barcode Generator unterstützt alle Merkmale des PDF417 Barcode Symbologie. Lesen Sie mehr über die relevanten Produkten:

• TBarCode
  Barcode SDK (ActiveX, OCX, DLL, .Net), Lineare und 2D Barcode Generator Software für Microsoft^® Windows, mit PDF417-Unterstützung.
• TBarCode/X
  Barcode SDK (Shared Library, Executable), Lineare und 2D Barcode Generator Software für Linux^® und Unix^®, mit PDF417-Unterstützung.
• Barcode Studio
  Visuelle Barcode Editor für Lineare und 2D Barcodes (Microsoft^® Windows), mit PDF417-Unterstützung.
• TBarCode/SAPwin
  Lineare und 2D Barcode-Druck Software für SAP^® ERP Systemen, mit PDF417-Unterstützung.
• TFORMer
  Etikettendruck-Software mit Lineare und 2D Barcode-Unterstützung, Report Generator, Output Engine für Microsoft^® Windows und Linux^®/Unix^®, mit PDF417-Unterstützung.

PDF417 Anwendungsbereich

PDF-417 wird zum Kodieren großerer Menge von Daten verwendet, meistens bis zu ein oder zwei hundert Zeichen wird in einem einzigen Symbol kodiert.
Das PDF417 Symbologie wird hauptsächlich im Europa und im USA verwendet. Das 2D Barcode Symbologie ist meistens für Anwendungen im Logistikbereich (besonders in die Automobil-Industrie), Transport (z.B. für Versandaufkleber), Ausweise (z.B. Führerschein, Pass) und Aktenverwaltung im Einsatz.

PDF417 Klassifikation

PDF417 is a 2D barcode symbology (two-dimensional barcode) with very high data density. A single PDF417 symbol can be imagined as multiple linear bar-codes (called "rows") stacked above each other. This is the reason why the PDF417 symbology is sometimes called a "stacked linear symbology". The overall shape of a PDF417 is rectangular. The size of the symbol can be modified by the user. The ratio of the widths of the bars (or spaces) to each other encode the information in a PDF417 symbol. For that reason the printing accuracy and a suitable printer resolution are important for high quality PDF417 symbols. Pure 2-D barcode symbologies like Data Matrix or QR Code encode the information in the presence of black or white dots at specific positions - and not by using bar:space ratios. The normative standard for the PDF 417 barcode symbology is called ISO/IEC 15438:2001 (ISO International Standard).

PDF417 History

PDF 417 was developed 1991 by the company Symbol. This company was recently acquired by Motorola.

PDF417 Aliases

PDF417 is also known under the names PDF-417, Portable Data File and PDF 417. The term Macro PDF (or Macro PDF417) is used when concatenating multiple PDF417 barcode symbols (see below - Structured Append).

PDF417 Technical Data

• PDF417 data capacity: A single PDF417 symbol can theoretically hold up to 1850 alphanumeric characters, 2710 digits or 1108 bytes. Due to internal data compression algorithms the exact data capacity depends on the structure of the data to be encoded. The maximum PDF417 capacity is also influenced by available printing space and the printer resolution.
• The default character set is CP437.
• Error correction: PDF417 offers a built-in error correction method based on Reed-Solomon algorithms. The error correction level is adjustable by the user between level 0 (just error detection) and level 8 (maximum error correction). Recommended error correction levels are between level 2 and 5, but the optimal value depends on amount of data, printing quality of the PDF417 symbol and decoding capabilities.
• PDF417 supports 'Structured Append', in such a case the symbology is named Macro PDF417 or MacroPDF. Theoretically up to 99999 PDF417 symbols can be concatenated. If a scanner or decoder supports this feature, it returns the concatenated data content of all PDF417 symbols in the correct order.