发明名称 |
Switching device for driving LED array by pulse-shaped current modulation |
摘要 |
A circuit drives an LED array and controls the brightness of the LED array by regulating the current flowing through the array. The LED array is driven by a pulse-shaped current of which the mean value is regulated with at least one or two of the following types of modulation: frequency modulation, pulse-width modulation, and amplitude modulation.
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申请公布号 |
US7463070(B2) |
申请公布日期 |
2008.12.09 |
申请号 |
US20040504139 |
申请日期 |
2004.08.10 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS, N.V. |
发明人 |
WESSELS JOHANNES HENDRIK |
分类号 |
G01R29/02;G09G3/14;H01L33/00;H03K7/08;H05B33/08 |
主分类号 |
G01R29/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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