LED driving module, LED driving module processing method and LED driving cascade system

Abstract

The invention provides an LED driving module, an LED driving module processing method and an LED driving cascade system. A first input end of the LED driving module is connected with a second output end, and a second input end is connected with a third output end; a receiving circuit of an LED driving chip differentially receives for the second input end of the LED driving module and a third input end of the LED driving module and outputs first single-ended signals, receives for the second input end in a single-ended way and outputs second single-ended signals, and receives for the third input end in the single-ended way and outputs third single-ended signals. A channel validity judgment circuit makes validity judgment on decoded data to judge the validity of a channel. A self-addressing and data acquisition circuit performs self-addressing according to the validity of the channel, and intercepts a corresponding data segment in valid data according to self-addressing. The output end of a data output circuit is in output connection with a first output end of the LED driving module so that the valid data segment remained after intercepting is output through the first output end.

Description

technical field [0001] The invention relates to the technical field of LEDs, in particular to an LED driving module, a processing method for the LED driving module and an LED driving cascade system. Background technique [0002] In the existing point light source, lighting decoration, soft and hard light bar market, the DMX512 protocol has become one of the clear requirements in the bidding requirements of point light source engineering projects. Low-end applications use signal serial transmission, which cannot support long-distance transmission. If you want to support long-distance transmission, you need to install a first board at the front end of the entire system circuit to be responsible for receiving differential signals, and then convert them to serial transmission. The problem is: the first board is easily damaged and differentiated from other nodes, resulting in low production efficiency and complicated installation, and cannot support breakpoint resume. High-end a...

AI Technical Summary

Problems solved by technology

Low-end applications use signal serial transmission, which cannot support long-distance transmission. If you want to support long-distance transmission, you need to install a first board at the front end of the entire system circuit to be responsible for receiving differential signals, and then convert to serial transmission.

The problem is: the first board is easily damaged and differentiated from other nodes, resulting in low production efficiency and complicated installation, and cannot support breakpoint resume

However, each node needs to be addressed, and the labor cost is very high during engineering installation

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