| 摘要 |
The present invention provides a lighting control circuit having a light sensor that outputs a first signal in response to being exposed to radiation. The lighting control circuit has a detection circuit that is coupled to the light sensor and is configured to generate a second signal from the first signal. The lighting control circuit has a driver circuit that is coupled to the detection circuit and is configured to generate a third signal to control an illumination level of a light, wherein an amplitude of the third signal is varied in response to the second signal and a reference signal. The lighting control circuit also has a shifting reference circuit configured to shift a reference voltage of the driver circuit to compensate for a supplemental sunlight energy contributed to the ambient light in a room.
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