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Transmission method of LED drive data

A data transmission method and LED driving technology, applied in the field of LED driving, can solve the problems of reduced reliability of LED lighting systems, failure of LED lights to light up, and failure to receive driving data.

Active Publication Date: 2014-07-02
SHENZHEN TITAN MICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional multi-level LED drive circuit, the LED drive data is transmitted by a single line, and the data of each level of the LED drive circuit is from the only one output data of the previous LED drive circuit. When a certain level of LED When the driving circuit fails, the subsequent LED driving circuit cannot receive the driving data, resulting in the inability to light up the LED lights after the fault point, thus reducing the reliability of the entire LED lighting system

Method used

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  • Transmission method of LED drive data
  • Transmission method of LED drive data
  • Transmission method of LED drive data

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Embodiment Construction

[0019] Further description will be made below in conjunction with the accompanying drawings.

[0020] like figure 1 As shown, it is a block diagram of an LED multi-stage driving circuit in one embodiment. The LED multi-stage drive circuit includes a plurality of cascaded LED drive modules. To show the difference, the multiple LED driver modules are sequentially numbered as LED driver module 1, LED driver module 2, LED driver module 3, . . . , LED driver module n. The function and pin structure of each LED driver module are the same, and one of the LED driver modules will be described in detail below.

[0021] like figure 2 shown, for figure 1 The pin schematic diagram of any LED driving module in the embodiment. The LED driving module includes two signal input interfaces 10, 20, one output interface 30 and a driving signal output pin 40 for outputting R, G, B signals. The signal input interfaces 10 and 20 of the LED driving module receive the LED driving data, and the o...

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Abstract

The invention discloses an LED multi-level drive circuit, which includes a plurality of cascaded LED drive modules, and the LED drive module includes at least two signal input interfaces and one output interface, wherein: at least two signal input interfaces of the initial LED drive module At least one signal input interface in the input interface accepts LED drive data input; one signal input interface in at least two signal input interfaces of each other LED driver module after the initial LED driver module receives the output of the upper-level LED driver module The output data of the interface, and the remaining signal input interfaces receive the output data of the previous multi-level LED driver module in sequence. In addition, a method for transmitting LED driving data is also disclosed. The LED multi-stage driving circuit and LED driving data transmission method can improve the reliability of LED driving data transmission.

Description

【Technical field】 [0001] The present invention relates to LED driving, in particular to a LED driving data transmission method. 【Background technique】 [0002] In multi-level LED driving (such as LED driving for outdoor LED decorative guardrail tubes), each level of driving circuit will drive a group of LED lights, and the driving data of LEDs must be transmitted through multiple levels to ensure that the LEDs at all levels Lights can be turned on. [0003] In the traditional multi-level LED drive circuit, the LED drive data is transmitted by a single line, and the data of each level of the LED drive circuit is from the only one output data of the previous LED drive circuit. When a certain level of LED When the driving circuit fails, the subsequent LED driving circuit cannot receive the driving data, resulting in that the LED lights after the fault point cannot be lit, thereby reducing the reliability of the entire LED lighting system. 【Content of invention】 [0004] Bas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02
Inventor 张伟张碧珍刘文峰门洪达
Owner SHENZHEN TITAN MICRO ELECTRONICS