Patent ID: 9041307
Filing Date: 2015-05-26
Classification: H05B

Abstract:
1. A method for brightness control, adapted to a light emitting device which emits a light of an output brightness, a plurality of brightness thresholds existing in between the minimal value and the maximal value of said output brightness, and each zone between the neighboring brightness thresholds defining a brightness zone which is with a brightness changing rate, said method for brightness control comprising the steps of: setting said output brightness to be an initial value, and controlling said light emitting device emitting said light accordingly; setting a target value, and controlling said output brightness changing from said initial value toward said target value with said brightness changing rate of said brightness zone corresponding to said initial value; controlling said output brightness changing toward said target value with the following brightness changing rate when said output brightness crossing one of said brightness thresholds and entering the following brightness zone, wherein said following brightness changing rate corresponds to said following brightness zone; and stopping changing said output brightness when reaching said target value.