| 摘要 |
A correction method for auto brightness control light sensors in liquid crystal displays (LCDs). The disclosed method contains at least the following steps: Establish a correspondence range table of environmental brightness and LCD panel brightness. The light sensor generates an input voltage signal. The input voltage signal is output to a voltage control oscillator, which then outputs an output frequency. A correspondence range is then provided and the maximum, mean value and minimum are set. Finally, the output frequency is output to a microprocessor according to the correspondence range table. A control signal is output to correct the brightness of the back-light panel of the LCD.
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