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LED driving device and control system of handheld two-way transmission device

A technology of LED drive and two-way transmission, applied in the direction of instruments, static indicators, etc., can solve the problems of damage to three adjacent LEDs, failure of the circuit to work normally, difficulty in product maintenance, etc., and achieve the effect of ensuring normal transmission

Pending Publication Date: 2021-06-25
铠强科技(平潭)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the clock line and data line are used, or the data line alone is used to transmit data, once the transmission lines between chips are connected incorrectly, other normal points will not work properly, and the finished product will have no function, which will bring difficulties to product maintenance.
Therefore, there is an LED control chip that uses two identical data signal lines to transmit, but using two identical data signal lines as a data transmission line requires an additional port. In addition to high production costs, it will damage three adjacent LEDs at the same time. The circuit does not work properly

Method used

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  • LED driving device and control system of handheld two-way transmission device
  • LED driving device and control system of handheld two-way transmission device
  • LED driving device and control system of handheld two-way transmission device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1: See figure 1 , figure 1 It is the structural block diagram of the first embodiment of the two-way transmission device of the present invention. The application provides an intelligent two-way transmission device, which includes a front-level interface module, a rear-level interface module, an intelligent transmission direction scanning supervision module, a data control module and LEDs, and an input terminal selection module for the intelligent transmission direction scanning supervision module. One is connected with the previous level interface module and the latter level interface module, the output terminal of the intelligent transmission direction scanning supervision module is connected with the data control module, and the data control module outputs signals to the LED; When the input signal of the level interface module, the intelligent transmission direction scanning supervision module sends the input signal to the data control module, and the data c...

Embodiment 2

[0055] Example 2: See figure 2 , figure 2 In the second embodiment of the two-way transmission device of the present invention, the intelligent transmission direction scanning supervision module can receive the structural block diagram of the input data of the previous level interface module; The unit is electrically connected, the front-level interface module and the rear-level interface module are respectively connected to the direction selector, the direction selector is connected to the data control module, and the input signal of the direction selector is sent to the data control module; it can be understood that in some cases Next, the next-level interface of the Nth chip is in the output signal state, which is connected to the previous-level interface of the N+1 chip. It is possible that the interface is also in the output signal state at present. In the same case, it may cause burnout or failure of the device.

Embodiment 3

[0056] Example 3: See Figure 3-5 , the above-mentioned intelligent transmission direction scanning supervision module includes a direction selector and a signal receiving scanning unit connected with the direction selector, and the signal receiving scanning unit controls the direction selector; wherein, when the data control module can receive the input data of the previous level interface module When the signal input signal of the previous level interface module is received by the scanning unit; the input signal of the previous level interface module is sent to the direction selector; when the data control module cannot receive the input data of the previous level interface module after a period of time, the signal is changed from the rear The first-level interface module inputs signals to the direction selector, the direction selector inputs the data control module, and the data control module inputs signals to the signal receiving scanning unit. In this embodiment, the sig...

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Abstract

The invention discloses an LED driving device and control system of a handshake type two-way transmission device, and the device comprises a previous-stage interface module, a later-stage interface module, an intelligent transmission direction scanning and monitoring module, a data control module, and an LED output driving circuit. The input end of the intelligent transmission direction scanning and monitoring module is connected with the previous-stage interface module and the next-stage interface module, the output end of the intelligent transmission direction scanning and monitoring module is connected with the data control module, and the data control module outputs signals to the LED output driving circuit. According to the invention, the problem that an LED transmitting signals in a traditional mode is easy to fail is solved, and normal transmission of the whole system is ensured.

Description

Technical field: [0001] The invention relates to the technical field of LEDs, in particular to an LED driving device and a control system of a handshaking bidirectional transmission device. Background technique: [0002] In the beginning, most LED cascaded control chips used clock lines and data lines to transmit data to control the color and brightness of light-emitting diodes on the display screen, and gradually evolved into only one data line for transmission control. However, if the clock line and data line are used, or the data line alone is used to transmit data, once the transmission lines between chips are connected incorrectly, other normal points will not work properly, and the finished product will have no function, which will bring difficulties to product maintenance. Therefore, there is an LED control chip that uses two identical data signal lines to transmit, but using two identical data signal lines as a data transmission line requires an additional port. In a...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32G09G2370/00
Inventor 杨士斌黄照兴丁懿慧尤金
Owner 铠强科技(平潭)有限公司
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