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Data transmission method of single-line cascade circuit and LED chip cascade system

A data transmission method and LED chip technology, applied in electrical components, instruments, static indicators, etc., can solve the problems of narrowing of pulse width, limitation of the number of cascaded data transmission and transmission distance, data error code, etc. The effect of shortening the duration, improving the overall data transmission speed, and solving the problem of bit errors

Active Publication Date: 2021-08-03
深圳市美矽微半导体有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to factors such as inconsistency in the processing of LED chips and changes in the application environment, the pulse width of the data signal during the data transmission process of the LED chip cascade system will gradually narrow or widen, and even cause data errors. Therefore, data transmission Limited by the number of cascades and transmission distance

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  • Data transmission method of single-line cascade circuit and LED chip cascade system
  • Data transmission method of single-line cascade circuit and LED chip cascade system
  • Data transmission method of single-line cascade circuit and LED chip cascade system

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Embodiment Construction

[0051] Embodiments according to the present invention will be described in detail below with reference to the drawings. When the description refers to the drawings, the same reference numerals in different drawings indicate the same or similar elements unless otherwise indicated. It should be noted that the implementations described in the following exemplary embodiments do not represent all implementations of the present invention. They are merely examples of apparatus and methods consistent with certain aspects of the present disclosure as recited in the claims, and the scope of the present invention is not limited thereto. On the premise of no contradiction, the features in the various embodiments of the present invention can be combined with each other.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technic...

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Abstract

The invention provides a data transmission method of a single-line cascade circuit and an LED chip cascade system, and the method comprises the steps: starting a decoding clock when the input data is detected to be a set waveform; generating a first data waveform at t1, and transmitting the first data waveform to a next-stage circuit; sampling and judging the waveform of the input data at t2; when it is judged that the bit is 0, changing the first data waveform into a second data waveform and stopping decoding the clock; when it is judged that the bit is 1, changing the first data waveform into a second data waveform at t3, and stopping clock decoding; and from the stop of the decoding clock to the next t1, transmitting the second data waveform in a single line to the next stage of circuit. When the output data is at a high level, the length of the output data is integral multiples of a decoding clock period, the problem that the high level is gradually widened or narrowed due to cascade circuit transmission is avoided, and the error code problem of data transmission is solved. Moreover, the transmission duration of bit 0 is shortened, so that the overall data transmission speed of the LED chip cascade system is improved.

Description

technical field [0001] The invention relates to the technical field of LED display, in particular to a data transmission method of a single-wire cascade circuit and an LED chip cascade system. Background technique [0002] LED lights have the characteristics of energy saving, good chromaticity, and long life, and are widely used. The number of light points that can be driven by a single LED chip is limited. To realize a large-scale lighting system or LED display, LED chips need to be cascaded. Due to factors such as inconsistency in the processing of LED chips and changes in the application environment, the pulse width of the data signal during the data transmission process of the LED chip cascade system will gradually narrow or widen, and even cause data errors. Therefore, data transmission It is limited by the number of cascades and the transmission distance. In practical applications, for the data transmission of the LED chip cascade system, not only the data transmissi...

Claims

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Application Information

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IPC IPC(8): H05B45/325G09G3/32
CPCH05B45/325G09G3/32Y02B20/40
Inventor 孙占龙赵明袁楚卓肖建强
Owner 深圳市美矽微半导体有限公司
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