公开(公告)号：US09549444B2

公开(公告)日：2017-01-17

申请号：US14532690

申请日：2014-11-04

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Ching-Ran Lee ,  Wen-Tien Tsai ,  Tzu-Hung Yang

IPC: H05B37/02 ,  H05B33/08

CPC classification number: H05B33/0851 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B20/42 ,  Y02B20/46

Abstract: A dimming system comprises a controller and an AC-to-DC converter. The controller outputs a control signal in response to a dimming signal. The controller comprises a frequency adjustment circuit and a duty cycle adjustment circuit. The frequency adjustment circuit adjusts the frequency of the control signal in response to the dimming signal. The duty cycle adjustment circuit adjusts the duty cycle of the control signal in response to the dimming signal. The AC-to-DC converter converts an external power and to output a DC signal in response to the control signal so as to drive a light source by the DC signal. When the controller is operated at a first mode, the control signal has a first frequency and a first duty cycle. When the controller switches to a second mode, the control signal has a second frequency and a second duty cycle.

Abstract translation: 调光系统包括控制器和AC-DC转换器。 控制器响应于调光信号输出控制信号。 控制器包括频率调节电路和占空比调节电路。 频率调节电路响应于调光信号调节控制信号的频率。 占空比调整电路根据调光信号调节控制信号的占空比。 AC-DC转换器转换外部电力并响应于控制信号输出DC信号，以便通过DC信号驱动光源。 当控制器在第一模式下操作时，控制信号具有第一频率和第一占空比。 当控制器切换到第二模式时，控制信号具有第二频率和第二占空比。

公开(公告)号：US20160050735A1

公开(公告)日：2016-02-18

申请号：US14532690

申请日：2014-11-04

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Ching-Ran Lee ,  Wen-Tien Tsai ,  Tzu-Hung Yang

IPC: H05B37/02

CPC classification number: H05B33/0851 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B20/42 ,  Y02B20/46

Abstract: A dimming system comprises a controller and an AC-to-DC converter. The controller outputs a control signal in response to a dimming signal. The controller comprises a frequency adjustment circuit and a duty cycle adjustment circuit. The frequency adjustment circuit adjusts the frequency of the control signal in response to the dimming signal. The duty cycle adjustment circuit adjusts the duty cycle of the control signal in response to the dimming signal. The AC-to-DC converter converts an external power and to output a DC signal in response to the control signal so as to drive a light source by the DC signal. When the controller is operated at a first mode, the control signal has a first frequency and a first duty cycle. When the controller switches to a second mode, the control signal has a second frequency and a second duty cycle.

Abstract translation: 调光系统包括控制器和AC-DC转换器。 控制器响应于调光信号输出控制信号。 控制器包括频率调节电路和占空比调节电路。 频率调节电路响应于调光信号调节控制信号的频率。 占空比调整电路根据调光信号调节控制信号的占空比。 AC-DC转换器转换外部电力并响应于控制信号输出DC信号，以便通过DC信号驱动光源。 当控制器在第一模式下操作时，控制信号具有第一频率和第一占空比。 当控制器切换到第二模式时，控制信号具有第二频率和第二占空比。