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The LED driver corrects the LED illumination by controlling the LED current. The LED illumination can be set in 16 steps, with 7 steps in the direction of illumination increase in relation to the standard value, and 8 steps in the direction of decrease. For this reason, the LED correction data is a
The relationship between the LED correction data and LED current correction steps with the LED driver used in an LED head is shown below.
LED Correction Data
| Corretion Data |
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| Correction | Correction | |
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| Step | Mode |
msb b3 | b2 |
| b1 | lsb b0 | ||
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1 | 0 |
| 0 | 0 | +16% | − |
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| − |
0 | 1 |
| 1 | 1 | +14% | |
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0 | 1 |
| 1 | 0 | +12% | Correction by |
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0 | 1 |
| 0 | 1 | +10% | increasing |
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0 | 1 |
| 0 | 0 | +8% | illumination |
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| − |
0 | 0 |
| 1 | 1 | +6% | |
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| − |
0 | 0 |
| 1 | 0 | +4% | |
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| − |
0 | 0 |
| 0 | 1 | +2% | |
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0 | 0 |
| 0 | 0 | 0% | No correction |
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1 | 1 |
| 1 | 1 | ↓ | |
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| ↓ |
1 | 1 |
| 1 | 0 | ||
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1 | 1 |
| 0 | 1 | Correction by | |
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1 | 1 |
| 0 | 0 | decreasing | |
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1 | 0 |
| 1 | 1 | illumination | |
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| ↓ |
1 | 0 |
| 1 | 0 | ||
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| ↓ |
1 | 0 |
| 0 | 1 | ||
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40930701TH DRAFT Vesion | 45 / |