System for merge sorting that assigns an optical memory capacity

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395800, 364DIG1, 3642229, 3642821, G06F 1540

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active

054106893

ABSTRACT:
According to this invention, an address converter for defining a start address of an external memory for each of sort controllers is arranged to each of sort cells or is commonly arranged to the sort cells. An optimal memory capacity for each of the sort controllers is assigned to the external memory. The plurality of sort controllers commonly use one memory bus, and use timings of the common memory bus are sequentially controlled between the plurality of sort controllers. The external memory can be commonly used as a buffer memory, and use efficiency of the memory can be increased. In addition, since the single memory bus is used, the number of input/output pins for the memory bus is decreased, and the plurality of sort controllers can be integrated on one chip without increasing the number of input/output pins.

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patent: 5185888 (1993-02-01), Tanaka et al.
patent: 5210870 (1993-05-01), Baum et al.
patent: 5274835 (1993-12-01), Wakatani
Horowitz et al., Fundamentals of Data Structures in Pascal, pp. 382-385, Computer Science Press, 1987.

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