Patent ID: 8294698
Filing Date: 2012-10-23
Classification: G09G,H05B,Y02B

Abstract:
1. A processing circuit coupled to a controlling circuit, comprising: a first capacitor module; a second capacitor module; a detection module generating a detection signal according to intensity of an external light, wherein the first capacitor module and the second capacitor module are both charged via the detection signal, and wherein the capacity of the first and second capacitor modules are different; a first processing module asserting a first output signal according to the time of charging the first capacitor module; and a second processing module asserting a second output signal according to the time of charging the second capacitor module, wherein: when the first output signal is asserted, the controlling circuit controls a backlight according to the first output signal for adjusting intensity of light emitted from the backlight; when the second output signal is asserted, the controlling circuit controls the backlight according to the second output signal for adjusting intensity of the light emitted from the backlight; and when the first and the second output signals are asserted, the controlling circuit controls the backlight according to the first and the second output signals or the first output signal for adjusting intensity of the light emitted from the backlight.