Dynamically coupled multi-layer mixed-mode CNN

This paper shows a multi-layer cellular nonlinear network with feedback interconnections between layers. The multi-layer approach allows for imitation of some complex spatio-temporal visual information processing tasks that are motivated by recent biological studies. A mixed-mode architecture with discrete time integration is used, which makes it possible to process the data layer by layer and still achieve inter-layer feedback interaction. It is shown how the integration step can be programmed differently for each layer with the mixed-mode cell. Also, an in-cell analog-to-digital converter ADC is described and the selected multiplication scheme, the use of binary weighted multipliers, is described.