Two-wire cascade application system for power supply and data transmission at the same time and implementation method thereof

A technology for data transmission and power supply, applied to electrical components, static indicators, instruments, etc., can solve problems such as low reliability and low display refresh rate, achieve the effect of improving refresh rate, optimizing display effect, and ensuring accuracy

A technology for data transmission and power supply, applied to electrical components, static indicators, instruments, etc., can solve problems such as low reliability and low display refresh rate, achieve the effect of improving refresh rate, optimizing display effect, and ensuring accuracy

CN112259046APending Publication Date: 2021-01-22深圳市梓晶微科技有限公司
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  • Two-wire cascade application system for power supply and data transmission at the same time and implementation method thereof
  • Two-wire cascade application system for power supply and data transmission at the same time and implementation method thereof
  • Two-wire cascade application system for power supply and data transmission at the same time and implementation method thereof

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Experimental program
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Effect test

Embodiment Construction

[0024]The present invention will be described in further detail below in conjunction with the drawings.

[0025]figure 1 Schematic diagram of a two-wire cascade application system.

[0026]figure 2 It is a schematic block diagram of the internal circuit of a two-wire cascade chip commonly used in the market. At this time, the cascade chip directly samples and transmits data from the power line. When the two-wire cascade application system is longer, that is, when the two-wire cascade application system has more cascaded chips in series and parallel, due to the influence of parasitic resistance and capacitance, the data transmitted on the power line is abnormal (the width of the high level changes) Long or short), leading to wrong address writing, resulting in abnormal display, etc. At the same time, the common two-wire cascade application system on the market transmits data including address and display. A cascade chip has more data. Under the same refresh rate, the number of cascade chip...

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Abstract

The invention discloses a two-wire cascade application system for power supply and data transmission at the same time and an implementation method thereof. The two-wire cascade application system comprises a controller, a cascade chip and an LED lamp, the controller is connected with the cascade chip, the cascade chip is connected with the LED lamp, a voltage clamping module, a power supply module, a data storage module, a PWM constant-current output drive circuit, an R end, a G end, a B end, a W end, a VCC / DATA end and a GND / DATA end are arranged in the cascade chip, and a data sampling calibration module, a power line sampling transmission data module, a instruction setting chip initial state module, a module for judging whether the E-fuse address is the same as the chip initial addressor not and an E-fuse module which are connected in sequence are also arranged in the cascade chip. For the cascade application, the accuracy of the cascade application is ensured, the production costis saved, the production process is simplified, the production automation is realized, the display effect is optimized and the like.

Description

Technical field[0001]The invention relates to a cascade application system, in particular to a two-wire cascade application system capable of supplying power and simultaneously transmitting data and an implementation method thereof.Background technique[0002]The LED display cascade application system includes a controller and a cascade chip. The controller sends data, and the cascade chip receives data to display and forward data. The existing LED display cascade application system is divided into LED display series application system and LED display parallel application system.[0003]The LED display serial application system only needs a controller to generate and send data, and the serial chip receives the data display and forwards the data. The LED display serial application system has the advantage of low cost in general display application effects (the separate chip address unit and signal amplifier that can be set at any time are not required); the LED display serial application...

Claims

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Application Information

Patent Timeline
22 Jan 2021
Publication
CN112259046A
IPC
G09G3/32
CPC
G09G3/32; H05B45/20; H05B47/185; H05B45/325; G09G2330/021
Inventors
黄彬阳; 黄钦阳