Data processing device

Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition

Reexamination Certificate

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Details

C711S202000, C711S221000, C717S168000

Reexamination Certificate

active

06859855

ABSTRACT:
A data processing device includes a read-only memory, a flash memory capable of modifying information stored therein and adding information thereto, a central processing unit performing data processing using information stored in the read-only memory and the flash memory, an information storage area provided in the flash memory for storing predetermined modifiable information among the information used by the central processing unit for data processing, an address storage area provided in the flash memory for storing at least the address of information stored in the information storage area, and an address-modification control unit for, after at least one of modification of modifiable information stored in the information storage area and addition of modifiable information to the information storage area is performed, performing modification of the address of the information stored in the address storage area.

REFERENCES:
patent: 5625791 (1997-04-01), Farrugia et al.
patent: 2295908 (1996-06-01), None
patent: 63-311436 (1988-12-01), None
patent: 03-172031 (1991-07-01), None
patent: 08-195952 (1996-07-01), None

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