Databar MicroPDF417

DataBar MicroPDF417 is 2D bar code used to encode data in a two-dimensional (2D) symbol (up to 150 bytes, 250 alphanumeric characters, or 366 numeric digits). Databar 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.

Each Micro PDF417 symbol consists of a stack of vertically aligned rows supporting one, two, three or four columns. A minimum of 4 rows and a maximum of 44 rows are supported. Unlike PDF417 which uses Start and Stop patterns, Micro PDF417 uses patterns call Row Address Patterns. These patterns are placed at the left and right of each row.

DataBar Micro PDF417 barcode is very similar to PDF417 except that it provides a limited set of symbol sizes. For each symbol size, a fixed level of error correction is supported. All the specified symbols support at least 28% of error correction codewords.

The data is encoded using one of three modes: Text compaction mode, Binary compaction mode, and Numeric compaction mode.

• Text: Databar Micro PDF417 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 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.