Device and method for compensating signal in a light-scribe system
OwnerYi-Long Hsiao, I-Bing Suinventors
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Abstract
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.
Claims18
A device for compensating signal in a light-scribe system, comprising:
- a light processing unit for processing the reflected light signal from the spokes of an optical disc and forming a pulse wave;
- a microprocessor for receiving the pulse wave from light processing unit, detecting any loss of pulse wave, and generating a replacing pulse wave;
- and
- a logical circuit for receiving pulse wave from light processing unit and replacing pulse wave generated by the microprocessor and forming a pulse wave for output;
- wherein when the logical circuit does not detect loss of pulse wave output by light processing unit, it outputs the pulse wave from the light processing unit;
- when loss of pulse wave output by light processing unit is detected, the logical circuit outputs the replacing pulse wave instead.
A method for compensating signal in a light-scribe system comprising the steps of:
- (1) activating the light-scribe system;
- (2) receiving the reflected light of an optical disc to form pulse wave signal;
- (3) detecting the loss of pulse wave signal;
- if there is no loss, go to step (5);
- if there is loss, proceed to the next step;
- (4) generating a replacing pulse wave;
- and
- (5) outputting a pulse wave.
Dependencies are inferred from the claim text.