System for alternatively transferring data from external memory

Details System for alternatively transferring data from external memory System for alternatively transferring data from external memory

1996-05-02

1998-04-28

Lee, Thomas C.

395840, G06F 1314, G06F 1338

Patent

active

057457859

ABSTRACT:
A system for high speed data transfer between an external memory and internal memory of a computer is disclosed. The system contains a CPU, two memory devices, a first circuit for communicating data with the external memory, a second circuit for communicating data with the internal memory, a data switch for alternatively connecting the two memory devices to the first and the second circuit, and a software routine. The software routine causes the data switch to couple one of the memory devices to the internal memory when the CPU is available to process data. The software routine also causes an application program to be executed by the CPU when data is transferred between the external memory and one of the memory devices.

REFERENCES:
patent: 4298954 (1981-11-01), Bigelow et al.
patent: 4303988 (1981-12-01), Tsuboka et al.
patent: 5111385 (1992-05-01), Hattori
patent: 5121480 (1992-06-01), Bonke et al.
E. Horowitz, S. Sahni, and S. Anderson-Freed, Fundamentals of Data Structures, Freeman and Company, 1991, pp. 378-385.

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