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Abstract

There are SIMD type parallel data processing systems having a single instruction stream and multiple data streams and MIMD type parallel data processing systems having multiple instruction and data streams in the parallel data processing field for performing high-speed data processing. They have both merits and demerits and each have their suitable application fields. Because of this, it is extremely difficult to cover a wide range of application fields with either one of the systems. Then, a SIMD type parallel processing unit (50) and a MIMD type parallel data processing unit (51) are connected to each other by a common bus (41) and a memory (42), and a system controller (43) is provided to allow each of the parallel data processing units to perform its suitable processings, thus making it possible to apply the optimum parallel processing system to a wide range of application fields. That is, simple processings of a large volume of data are allocated to the SIMD type parallel data processing unit, while complex processings of a small volume of data are allocated to the MIMD type parallel data processing unit, whereby processings which have been difficult for a conventional computer to accomplish within an effective time, such as large-scale and complex processings of images, can be performed within a practical time at a high speed.

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