| 摘要 |
An exemplary gamma regulating system ( 20 ) for an LCD has a test-needed LCD ( 26 ), a light sensor ( 21 ), and a MCU ( 24 ). The LCD displays each gray scale image according to internal presetting standard gamma curve. The light sensor measures a luminance value of the gray scale image displayed by the test-needed LCD, and converts the luminance value to a voltage signal. The MCU compares the voltage signals representing the measured luminance values with the parameter data corresponding to the standard gamma curve, and regulates a gray voltage according the comparing result.
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