Invention Grant
- Patent Title: Light source driving device capable of dynamically keeping constant current sink and related method
- Patent Title (中): 能够动态保持恒流槽和相关方法的光源驱动装置
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Application No.: US12629864Application Date: 2009-12-02
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Publication No.: US08134304B2Publication Date: 2012-03-13
- Inventor: Kuo-Ching Hsu , Tsung-Hau Chang , Chin-Hsun Hsu
- Applicant: Kuo-Ching Hsu , Tsung-Hau Chang , Chin-Hsun Hsu
- Applicant Address: TW Hsinchu Science Park, Hsin-Chu
- Assignee: NOVATEK Microelectronics Corp.
- Current Assignee: NOVATEK Microelectronics Corp.
- Current Assignee Address: TW Hsinchu Science Park, Hsin-Chu
- Agent Winston Hsu; Scott Margo
- Priority: TW98125032A 20090724
- Main IPC: G05F1/00
- IPC: G05F1/00
Abstract:
A light source driving device for driving a light emitting component is disclosed. The light source driving device includes a voltage converter coupled to the light emitting component for converting an input voltage into an output driving voltage according to a voltage control signal, a dimming unit coupled to the light emitting component for implementing a dimming process according to a dimming signal, a current source coupled to the dimming unit for providing a driving current to drive the light emitting component, and a control unit coupled to the dimming unit and the voltage converter for detecting a dimming state to generate a dimming detection signal and generating a reference voltage according to the dimming detection signal, wherein the control unit controls the voltage converter to generate the output driving voltage so as to driving the light emitting component.
Public/Granted literature
- US20110018450A1 Light Source Driving Device Capable of Dynamically Keeping Constant Current Sink and Related Method Public/Granted day:2011-01-27
Information query
IPC分类:
