Invention Grant
- Patent Title: Power source sensing dimming circuits and methods of operating same
- Patent Title (中): 电源感应调光电路及其操作方法
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Application No.: US12473821Application Date: 2009-05-28
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Publication No.: US08217591B2Publication Date: 2012-07-10
- Inventor: Joseph Paul Chobot , Michael James Harris , Paul Arthur Beck
- Applicant: Joseph Paul Chobot , Michael James Harris , Paul Arthur Beck
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Myers Bigel Sibley & Sajovec, P.A.
- Main IPC: H05B37/02
- IPC: H05B37/02
Abstract:
Lighting is controlled by receiving an input signal, determining whether the input signal is an AC signal or a DC signal and generating a dimming command signal based on the determination of whether the input signal is an AC signal or a DC signal. For example, determining whether the input signal is an AC signal or a DC signal may include generating an average signal indicative of an average duty cycle of the input signal and determining whether the average signal meets a predetermined criterion.
Public/Granted literature
- US20100301751A1 POWER SOURCE SENSING DIMMING CIRCUITS AND METHODS OF OPERATING SAME Public/Granted day:2010-12-02
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