No abstract

We present a large-scale holographic associative memory system of binary images, with which an electronic digital computer is incorporated to realize a high performance and to combine a logical processing using external constraints. In the system, associative process is performed in two steps, correlation and image synthesis steps. In the correlation step we execute a simple nonlinear operation, and in the image synthesis step we introduce an external input based on the prior knowledge about the expected output. This external input let us to control the output of the system. In the optical implementation we use spatially multiplexed Fourier transformed holograms. Experimental demonstrations are given to illustrate the performance of the system and the effectiveness of the external input.