Series-connection display system and data transmission method thereof

Abstract

The invention relates to the technical field of LED lamp control and provides a series-connection display system and a data transmission method thereof. The data transmission method includes that a first driving chip receives a data frame formed by n groups of display data and one group of shared control data; starting from the first driving chip, the first driving chip extracts the display data and the shared control data at the corresponding level and corresponding to the first driving chip from the data frame, a data frame formed by the shared control data and the rest display data is sent to a second driving chip, and execution till an nth driving chip is performed sequentially according to a level-to-level series connection mode; in the process of sequentially executing till the nth driving chip according to the level-to-level series connection mode, each driving chip controls an LED lamp connected with the corresponding driving chip for display according to the display data and the shared control data at the corresponding level and corresponding to each driving chip. the control data which are identical are used, and the control data need to be transmitted for only once, so that identical control functions of series-connection driving chips are realized on the basis that number of cascaded chips of a series-connection system is not reduced.

Description

technical field [0001] The invention relates to the technical field of LED lamp control, in particular to a serial display system and a data transmission method thereof. Background technique [0002] At present, the series chips of the series display system in the prior art are connected in series step by step, such as figure 1 and figure 2 As shown, the display data read by the series chip is transmitted step by step from the previous level series chip to the next level series chip, that is, when the Nth level series chip receives the data stream output by the N-1 level series chip, it intercepts the (Nth stage) required display data to control the connected lamps to display corresponding effects, and then output the remaining data to the display device of the N+1th stage series chip. When it is necessary to increase the control function, it is necessary to increase the control data while sending the display data, such as image 3 As shown, a set of control data is adde...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a serial display system and its data transmission method, aiming to solve the problem in the prior art that the serial chips in the serial display system need to reduce the number of serial chips when transmitting control data

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