| 摘要 |
The present invention provides a device and method for compensating signal in a light-scribe system. A light processing unit processes the reflection received by a light emitter to form a pulse wave. A microprocessor receives the pulse signal and detects the loss of pulse wave with a detector. A timer counts the interruption time of the pulse wave. A comparator compares the interruption time to a threshold. If the interruption time is greater than the threshold, a pulse generator produces a replacing pulse wave. A logical circuit receives the pulse wave and the replacing pulse wave, outputs the pulse wave from the light processing unit if there is loss of pulse wave, and outputs the replacing pulse wave if there is no pulse wave loss.
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