Tool to generate/decode PLANET barcodes. PLANET (Postal Numeric Encoding Technique) is a barcode type used in the USA, especially by UPS for mail routing.

Barcode PLANET - dCode

Tag(s) : Character Encoding, Image Processing

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Tool to generate/decode PLANET barcodes. PLANET (Postal Numeric Encoding Technique) is a barcode type used in the USA, especially by UPS for mail routing.

The PLANET Barcode format makes it possible to code only numbers, in principle either 12 or 14. It contains 4 parts: the type of mail, a sender code, some tracking / marketing codes, a control character.

Each digit is coded in 5 bits, represented by short (= 0) or long (= 1) bars. The PLANET correspondence table is:

0 | 00111 | 1 | 11100 |
---|---|---|---|

2 | 11010 | 3 | 11001 |

4 | 10110 | 5 | 10101 |

6 | 10011 | 7 | 01110 |

8 | 01101 | 9 | 01011 |

The last digit is a check digit.

A PLANET barcode completely coded begins and ends with a bit 1 (represended with a long bar), it also includes a check digit before the final 1.

The PLANET code uses a checksum such that the sum of all digits is a multiple of 10. To this end, an additional digit $ X $ completes the barcode.

To calculate it, add all the digits of the barcode and keep the digit of units $ N $. The checksum is $ X = (10 - N) \mod 10 $.

__Example:__ The number 987 has for sum of digits $ 9 + 8 + 7 = 24 $, the unit digit is $ 4 $. The checksum is $ X = 10 - 4 \mod 10 \equiv 6 $.

The PLANET barcode has a graphic form based on long and short vertical bars/lines.

The PLANET barcode begins and ends with a long pipe/bar.

Each character is coded by a group of 5 bits composed of 3 long bars and 2 short bars.

The PLANET barcode has a variable length but most often 12 or 14 characters.

A PLANET barcode has a binary length equal to 2 modulo 5 (its unit digit is 2 or 7) because all the other characters are on 5 bits and 2 bits 1 are added at the beginning and at the end.

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