Multipath cascade application system and control method thereof for detecting and receiving correct data
A technology for applying systems and receiving data, applied to instruments, static indicators, etc., can solve problems such as input port anomalies, system anomalies, etc., and achieve the effect of ensuring correctness
Pending Publication Date: 2020-07-28
深圳天源中芯半导体有限公司
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Problems solved by technology
[0008] The present invention is to solve the problem that the input port abnormality caused by the abnormality of the input port in the production and application process of the existing multi-channel LED display series application system leads to the system abnormality, and provides a multi-channel cascade application system and a control method for detecting and receiving correct data
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[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0033] figure 2 In order to use the single-channel serial display LED application diagram of the general single-channel controller on the market, if a cascaded chip is damaged at this time, it will cause the subsequent cascaded chips to display errors and affect the application.
[0034] image 3 It is a schematic diagram of the two-channel series display LED application currently used in the market. At this time, the two-channel series application system is improved compared with the single-channel series application system. The improvement is determined by the reliability in the production process, which increases the difficulty of production, and it is difficult to Reach the maximum fault tolerance rate of the two-way LED display series application system. The invention optimizes the short-circuiting of the input port to GND, the short-circuiting of the...
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The invention discloses a multipath cascade application system and a control method thereof for detecting and receiving correct data. The 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, and the cascade chip is internally provided with at least two paths of data input ends, namely a DIN1 end and a DIN2 end; the cascade chip is provided with a first judgment module, a second judgment module, a third judgment module and a fourth judgment module. The control method comprises the following steps that: when the cascade chip is powered on, a first path of input port is initially selected to input data, the input port for receiving the data is judged to be short-circuited to GND, theinput port for receiving the data is judged to be short-circuited to VDD, the input ports for receiving the data are judged to be short-circuited mutually, and the input ports for receiving the data are judged to receive a certain amount of interference data. According to the invention, for multipath cascade application, the correctness of input data of the input port is automatically judged, andthe production application is simplified.
Description
technical field [0001] The invention relates to a multi-channel cascading application system, in particular to a multi-channel cascading application system and a control method for detecting and receiving correct data. Background technique [0002] The multi-channel LED display cascade application system includes a controller and a cascade chip (also known as a breakpoint resume chip), etc. The controller sends data, and the cascade chip receives data display and forwards and transmits data. Existing LED display cascade application systems are divided into LED display series application systems and LED display parallel application systems. [0003] LED display parallel application system, the controller generates the transmission data and the input channel connection of all the parallel chips, through the different chip addresses of the parallel chips, respectively obtains the data of the chip from the parallel data line and displays it. The LED display parallel application...
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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 黄钦阳李国添
Owner 深圳天源中芯半导体有限公司