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A kind of led driving circuit and transmission method thereof

A technology of LED drive and circuit, which is applied in the direction of electric lamp circuit layout, electric light source, lighting device, etc., and can solve problems such as affecting the display effect of LED lamps, failing to drive LED lamps, and failing to receive drive data from the LED drive module.

Active Publication Date: 2016-06-22
深圳市磊芯半导体有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide an LED drive circuit and its transmission method, to solve the problem that the subsequent LED drive module cannot receive the drive data due to the failure of the upper LED drive module, and cannot drive the LED light, which affects the LED Problems with the overall display effect of the light

Method used

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  • A kind of led driving circuit and transmission method thereof
  • A kind of led driving circuit and transmission method thereof
  • A kind of led driving circuit and transmission method thereof

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Embodiment Construction

[0028] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0029] The most critical idea of ​​the present invention is that the LED driver module can screen the standard pulse signal for data reading, and the LED driver module can simultaneously output two signal components including the pulse signal input by the upper stage and the regenerated pulse signal after its own processing. The first-level LED drive module can drive any signal component received to ensure the smooth transmission of the drive signal.

[0030] see figure 1 and figure 2 , figure 1 It is a connection circuit diagram of an LED driving circuit according to an embodiment of the present invention, figure 2 It is a structural block diagram of an LED driving circuit according to an embodiment of the present invention.

[0031...

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Abstract

The invention provides an LED drive circuit and a transmission method thereof. The transmission method includes dividing the input pulse signal into two paths for output; shaping the large pulse signal in the pulse signal output by one path to generate a shaped pulse signal; outputting the other path The small pulse signal in the pulse signal is amplified and shifted to generate an amplified and shifted pulse signal; a comparative analysis is performed to determine whether the shaped pulse signal is complete and whether the pulse width meets the standard. If so, select the shaped pulse signal output, if not, Then output the amplified and shifted pulse signal; convert the output pulse signal into a digital signal, extract the drive control signal and output it to drive the LED lamp, and convert the remaining digital signal into a regeneration pulse signal; combine the regeneration pulse signal with the input The pulse signal is output to the next stage after proportional attenuation and passive modulation. Solve the problem that the LED lamp cannot be driven due to the failure of the upper-level LED driver module, which affects the overall display effect of the LED lamp.

Description

technical field [0001] The invention relates to the field of LED electronic circuits, in particular to an LED driving circuit and a transmission method thereof. Background technique [0002] LED applications are ubiquitous in our lives. With the continuous improvement of LED technology, LED applications are becoming more and more extensive. However, the existing LED technology still needs continuous improvement. For example, in the application of LED lighting engineering, most of the existing LED connection methods adopt the single-line transmission of LED series drive data, which is obtained because of its simple connection relationship and low cost. It is widely used, but all the driving data of this connection method are transmitted from one level to the next. The driving data of each level is directly derived from the output of the previous level. When the LED driver chip of a certain level fails At this time, the LED driving circuit connected to it cannot receive the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 李蕾
Owner 深圳市磊芯半导体有限公司
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