Data communication apparatus with a program renewal function

Details Data communication apparatus with a program renewal function Data communication apparatus with a program renewal function

1996-09-20

1998-11-17

Voeltz, Emanuel Todd

Data processing: database and file management or data structures

Database design

Data structure types

395651, 395652, 395653, 707203, G06F 1212

Patent

active

058389814

ABSTRACT:
A data communication apparatus which has a program renewal operation to renew an original program with a renewal program. The original program is stored in a first non-volatile memory, which also stores the renewal program after the program renewal operation has been completed. A second memory, which is distinct from this first memory, stores at least a predetermined portion of the original program during the program renewal operation. A controller renews the original program in the first memory with the renewal program by accessing the at least predetermined portion of the original program in the second memory during the program renewal operation. In one embodiment the original and renewal programs are system programs. Addresses of the memories can also be exchanged during the program renewal operation and a verification step of ensuring that the renewal program has been accurately provided may also be executed.

REFERENCES:
patent: 5408672 (1995-04-01), Miyazawa et al.
patent: 5410703 (1995-04-01), Nilsson et al.
patent: 5469573 (1995-11-01), McGill, III et al.
patent: 5623604 (1997-04-01), Russell et al.
patent: 5630139 (1997-05-01), Ozaki

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