Multilayer real time image overlapping controller

The multilayer real-time image superposing controller includes kernel control module, output module and several input modules, connected through signal bus and back board. The kernel control module generates the pixel clock and sync signal for the whole controller, and all the signals are transmitted to all the signal processing modules connected to the signal bus to synchronize image signals entering to the signal bus. The present invention adopts pure hardware treating structure, and has input channel number and input signal type configured in requirement, and all the input signals capable of being displayed in high quality. All the signals may be superposed and displayed in window form in any size, any position and any order within the screen, and this raises the application flexibility, reduces waste in resource and lowers cost.