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Multi-LED display module management method

A technology of LED display screen and display module, which is applied in the direction of static indicators, instruments, etc., can solve the problems of reduced loading area, occupied data lines, and many return data lines, and achieves space saving, simple scheme, and energy saving The effect of wire

Active Publication Date: 2016-01-20
XIAN NOVASTAR TECH
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  • Claims
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Problems solved by technology

However, image 3 There are still some imperfections in the technical solution shown, for example: ①There are more data return signals, so more return data lines are required. For example, to detect N drive data lines, N return data lines are required; ②Many data return signals cause it to occupy about half of the data lines of the LED display module, which may reduce the loading area and cause changes in the physical interface

Method used

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Embodiment Construction

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Specifically, an LED display module 40 proposed by an embodiment of the present invention includes: a first module input and output interface 41, a module display drive circuit 43, a second module input and output interface 45, a microprocessor module 47, and temperature The acquisition circuit 48a, the voltage acquisition circuit 48b, and the flash memory 49.

[0033] The first module input and output interface 41 is suitable for connecting with the LED display control card ( Figure 4 (Not shown in the drawing) For example, the receiving card or the front-level LED display module is connected, for example, connected by a flat cable. The first module input and output interface 41 includes a module input interface...

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Abstract

The invention relates to a multi-LED display module management method, which can be applied to an LED display screen system comprising a receiving card and cascaded multiple LED display modules. The multi-LED display module management method comprises a step of wire arrangement detection and a step of point detection. According to the step of wire arrangement detection, multiple signal lines serve as the current external interrupt source one by one by using a timer to realize wire arrangement detection. According to the step of point detection, a timer capture mode or an external interrupt mode is used for reading level values of RGB data lines in the multiple signal lines to obtain point detection result data and store the data. Through carrying out program design on a microprocessor module of each LED display module, intelligent management on the LED display module is realized, and by using serial port communication, wire arrangement detection is thus realized, and even multiple functions such as point detection, IAP functions, working temperature recording, working voltage recording, flash memory management, and authorization management can be realized.

Description

Technical field [0001] The invention relates to the technical field of LED display control, in particular to a method for managing multiple LED display modules. Background technique [0002] The existing light emitting diode (LED) display system includes a receiving card and an LED display. The LED display is formed by splicing multiple boxes, and each box is composed of multiple LED display modules (or called LED light board) spliced ​​together. The traditional LED display module is equipped with a memory, which is read and written by the receiving card to realize the management of various module information such as lamp board correction coefficients and production information. In order to realize the management of correction data and production information, the traditional method adopts receiving The card directly accesses the memory on the LED display module through the SPI interface or the I2C interface. The use of the SPI interface has the problem of many control lines (SPI...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
Inventor 王伙荣梁伟王晨
Owner XIAN NOVASTAR TECH
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