Phiên bản mã QR 9 (53×53)
QR version 9 is 53×53 modules: up to 552 digits, 335 alphanumeric, 230 bytes or 141 kanji at level L; 98 bytes at H.
Version 9 data capacity
Maximum characters in a single encoding mode, per error-correction level (ISO/IEC 18004:2015, Table 7). Mixed-mode data and ECI headers reduce these limits.
| EC level | Recovers | Số | Chữ và số | Byte | Kanji |
|---|---|---|---|---|---|
| L | ~7% | 552 | 335 | 230 | 141 |
| M | ~15% | 432 | 262 | 180 | 111 |
| Q | ~25% | 312 | 189 | 130 | 80 |
| H | ~30% | 235 | 143 | 98 | 60 |
Codewords and error-correction blocks
The symbol carries 292 codewords in total, split between data and Reed-Solomon error correction (ISO/IEC 18004:2015, Table 9).
| EC level | Data codewords | EC codewords | Blocks (count × total, data, EC codewords) |
|---|---|---|---|
| L | 232 | 60 | 2 × (146, 116, 30) |
| M | 182 | 110 | 3 × (58, 36, 22) + 2 × (59, 37, 22) |
| Q | 132 | 160 | 4 × (36, 16, 20) + 4 × (37, 17, 20) |
| H | 100 | 192 | 4 × (36, 12, 24) + 4 × (37, 13, 24) |
Symbol structure
- Mô-đun
- 53 × 53
- Data modules (codeword bits + remainder bits)
- 2336
- Remainder bits
- 0
- Alignment patterns
- 6 (centre rows/columns 6, 26, 46)
- Version information blocks
- Yes (2 × 18 bits)