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Micro PDF417 is also known as

  • Micro Portable Data File 417
  • Micro PDF 417
  • MicroPDF417

Micro PDF417 Overview

MicroPDF417 is a multi-row symbology which may be utilized by applications needing to encode a moderate amount of data in a two-dimensional (2D) symbol (up to 150 bytes, 250 alphanumeric characters, or 366 numeric digits), and when minimizing symbol size is a primary concern. MicroPDF417 is based on PDF417 standard. MicroPDF417, unlike PDF417, may only be printed in certain defined combinations of rows, columns, and error correction codewords, up to a maximum of four data columns by 44 rows. The data is encoded using one of three compaction modes: Text compaction mode, Binary compaction mode, and Numeric compaction mode. Barcode Professional products support the following MicroPDF417 Compaction modes Text: It allows encoding all printable ASCII characters, i.e. values from 32 to 126 inclusive in accordance with ISO/IEC 646, as well as selected control characters such as TAB (horizontal tab ASCII 9), LF (NL line feed, new line ASCII 10) and CR (carriage return ASCII 13). Binary: It allows encoding all 256 possible 8-bit byte values (ISO/IEC 8859-1). This includes all ASCII characters value from 0 to 127 inclusive and provides for international character set support. Numeric: It allows efficient encoding of numeric data strings. Auto: It switches between Text, Binary and Numeric modes in order to minimize the number of codewords to be encoded. Micro PDF417 Versions MicroPDF417 symbols conform to certain predefined combinations of numbers of rows, columns, and number of error-correction codewords. Micro PDF417 Error Correction Each MicroPDF417 symbol contains at least seven error correction codewords. The Error Correction codewords provide capability for both error detection and correction. The number of error correction codewords for a MicroPDF417 symbol is fixed for each symbol version. Structured Append MicroPDF417 uses the Macro PDF417 mechanism for Structured Append. This mechanism allows files of data to be represented logically and consecutively in a number of MicroPDF417 symbols. Up to 99 999 different MicroPDF417 symbols can be so linked or concatenated and be scanned in any sequence to enable the original data file to be correctly reconstructed.