Real-time multiprocessor system using orthogonal memory access for digital signal processing

It is shown that a proposed dual-port DRAM approach for the realization of an orthogonal memory access structure is a very cost-effective method for digital signal processing. It has the advantages of flexibility and high-speed switching for time-domain real-time image processing. The authors also propose to use a dual-port DRAM in a FIFO form to obtain a processor-array extension scheme to extend logically the processor array to an infinite length. This gives a systematic solution to the job partitioning problem of multiprocessors for digital signal processing. It is also shown that various digital signal processing problems have been tackled successfully using the suggested processor-array extension and other techniques. The authors expect the proposed structure and realization schemes to be suitable for other applications