Data back-up system using nonvolatile read/write memory

Details Data back-up system using nonvolatile read/write memory Data back-up system using nonvolatile read/write memory

1997-05-30

1999-09-21

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

711103, G06F 1216

Patent

active

059567490

ABSTRACT:
A data back-up system of the present invention is applicable to a portable data terminal and includes an exclusive read/write controller for exclusively controlling the writing and reading of data out of a first nonvolatile memory. Only the control over the entire data terminal is assigned to a main controller. A volatile memory serves as a work area while a second nonvolatile memory stores system software including an operating system. The exclusive read/write controller makes it needless for the main controller to wait until all the necessary data have been written to the first nonvolatile memory. Moreover, the system implements rapid and reliable data back-up without resorting to a battery.

REFERENCES:
patent: 5465338 (1995-11-01), Clay

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