Non-linear pulse-width modulation PWM control device

A pulse width modulation and control device technology, which is applied in lighting devices, electric lamp circuit layout, use of semiconductor lamps, etc., can solve the problems of dynamic compression of visual response, lack of network arbitration protocol, and inability to achieve human vision. Expanding the dynamic range and enhancing the intuitive feel
CN1770934AInactive Publication Date: 2006-05-10上海国皓电子有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
上海国皓电子有限公司
Publication Date
2006-05-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention provides one shining or display network semiconductor LED shining system, which uses Network agreement and inside imbedded processor control and adopts non-linear PWM formula and control curve to drive semiconductor LED shining source to respond to linear brightness by visual characteristics to improve the dynamic range by human visibility on semi-conductor LED brightness.
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Description

1. Technical field

[0001] The present invention relates to a lighting control device for lighting or display purposes, in particular to a lighting device for semiconductor LED network control and driving. 2. Background technology

[0002] The known control and driving technologies of LED lighting can be divided into the following categories according to their technical characteristics:

[0003] (1) Use a semiconductor LED lighting device that periodically turns on / off the output port at a certain time interval. By selecting different on / off times, it is used to produce light and dark effects of LED lighting luminance. The advantage is that it can reduce the power consumption of driving LEDs, improve the quality of lighting changes, and create lifelike dynamic lighting effects.

[0004] The patent documents related to the technical features are:

[0005] ① LED drive circuit of Japan Seiko Electronics Co., Ltd. (China Patent Publication No. CN1370035A announced on September ...

Claims

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