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介绍一种用于拼接显示系统的简洁廉价的信号级联及通讯系统的实现方法,通过DVI链路将拼接显示系统组成一个闭环,每一个单元均可将本地图像信息送入此闭环内,在设为主机的单元把控制指令嵌入到DVI数据链路内,控制指令通过图像的行数与单元编号一一对应的方法来进行识别,并通过DVI的一个辅助控制信号CTL区分图像与控制指令,并经抗抖动处理后传输给下一单元,以此确保图像信息与控制指令可以传递到所有单元,每个单元收到控制指令并处理后再将应答信息放置到与自己编号一致的行所对应的位置,最终通过级联链路返回到设为主机的单元,通过此方法可以将通讯系统与图像传输系统融为一体,可降低系统成本、简化布线并提升控制的实时性。
A concise and inexpensive signal concatenation and communication system implementation method for a splicing display system is introduced. A splicing display system is formed into a closed loop through a DVI link. Each unit can send local image information into the closed loop. In The unit set as the host embeds the control instruction into the DVI data link, the control instruction identifies the number of lines and the unit number one by one according to the number of images, and divides the image and the control instruction by an auxiliary control signal CTL of DVI, And the anti-jitter processing after transmission to the next unit, in order to ensure that the image information and control instructions can be passed to all units, each unit receives control instructions and then deal with the response information and placed in line with their own number corresponding to And finally return to the unit set as the host through the cascade link. By this method, the communication system and the image transmission system can be integrated, thereby reducing the system cost, simplifying the wiring and improving the real-time control.