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<< Click to Display Table of Contents >> QR Code |
  
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<< Click to Display Table of Contents >> QR Code |
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The QR Code (short for Quick Response) was developed by Denso-Wave in 1994.
The QR Code provides four different encoding modes, the user data capacity depends on the encoding and error correction level:
Encoding Modes and Data Capacity |
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Numeric code only |
max. 7,089 characters |
Alphanumeric |
max. 4,296 characters |
Binary (8 bits) |
max. 2,953 bytes |
Kanji/Kana |
max. 1,817 characters |
VPE chooses automatically the best encoding. Only for Kanji you need to specify that the Kanji encoding shall be used.
Error Correction Capacity |
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Level L |
7% of codewords can be restored |
Level M |
15% of codewords can be restored |
Level Q |
25% of codewords can be restored |
Level H |
30% of codewords can be restored |
QR codes use the Reed–Solomon error correction.
The following features are not supported:
•ECI and FNC1 mode
•Micro QR Code
•QR Code model 1 (deprecated)