公开(公告)号：US20140217921A1

公开(公告)日：2014-08-07

申请号：US13914667

申请日：2013-06-11

Applicant: RICHTEK TECHNOLOGY CORP.

Inventor： Shei Chie Yang ,  Shui Mu Lin ,  Shih Chung Wang

IPC: H05B33/08

CPC classification number: H05B33/0845 ,  H05B33/0848

Abstract: A linearly dimming circuit of a light-emitting device, includes a diming signal processing unit, having a dimming signal input terminal and a current setting output terminal, wherein the dimming signal input terminal receives a luminance percentage setting to set a luminance of the light-emitting device to be a maximal luminance multiplying the luminance percentage setting, the dimming signal processing unit generates a current percentage setting according to the luminance percentage setting, the current setting output terminal outputs a driving current setting which sets the driving current to be a maximal driving current multiplying the current percentage setting; a light-emitting device driver stage, having a current setting input terminal and a driving current output terminal, wherein the current setting input terminal couples to the current setting output terminal and receives the driving current setting, the driving current output terminal outputs the driving current to the light-emitting device.

Abstract translation: 发光装置的线性调光电路包括具有调光信号输入端子和电流设定输出端子的调光信号处理单元，其中调光信号输入端子接收亮度百分比设定以设定发光装置的亮度， 发光装置为与亮度百分比设定相乘的最大亮度，调光信号处理单元根据亮度百分比设定生成电流百分比设定，当前设定输出端子输出将驱动电流设定为最大驱动的驱动电流设定 当前乘以当前百分比设置; 具有电流设定输入端子和驱动电流输出端子的发光装置驱动级，其中电流设定输入端子耦合到电流设定输出端子并接收驱动电流设定，驱动电流输出端子输出驱动电流 到发光装置。

公开(公告)号：US09041307B1

公开(公告)日：2015-05-26

申请号：US14447425

申请日：2014-07-30

Applicant: RICHTEK TECHNOLOGY CORP

Inventor： Huan-Chien Yang ,  Shui-Mu Lin ,  Shei-Chie Yang ,  Shih Chung Wang

IPC: G05F1/00 ,  H05B33/08

CPC classification number: H05B33/0848

Abstract: A method for brightness control, adapted to a light emitting device emitting a light of an output brightness, comprises: setting the output brightness to be an initial value, and controlling the light emitting device emitting the light accordingly; setting a target value, and controlling the output brightness changing from the initial value toward the target value with the brightness changing rate of the brightness zone corresponding to the initial value; controlling the output brightness changing toward the target value with the following brightness changing rate when the output brightness crossing one of the brightness thresholds and entering the following brightness zone, wherein the following brightness changing rate corresponds to the following brightness zone; stopping changing the output brightness when reaching the target value.

Abstract translation: 一种用于亮度控制的方法，适用于发出输出亮度的光的发光装置，包括：将输出亮度设定为初始值，并相应地控制发光装置的发光装置; 设定目标值，并且以与初始值对应的亮度区域的亮度变化率，控制从初始值向目标值变化的输出亮度; 当输出亮度穿过亮度阈值之一并进入以下亮度区域时，控制输出亮度朝着目标值变化，具有以下亮度变化率，其中以下亮度变化率对应于以下亮度区域; 停止在达到目标值时改变输出亮度。