Flash memory erasable programmable ROM that has uniform erasing

Details Flash memory erasable programmable ROM that has uniform erasing Flash memory erasable programmable ROM that has uniform erasing

1997-03-28

1999-07-20

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

G06F 1200

Patent

active

059268263

ABSTRACT:
An erasable programmable ROM has a storage area which is divided into blocks having a predetermined block length, each assigned a block address and provided with information. With reference to block addresses and information, the CPU specifies the blocks to be used for storing and writes a file to the ROM in block units. The CPU writes the file first to a blank block having a writing start mark written the blank block when the blank block is present or to an optional blank block if otherwise and then successively to other blank blocks. On completion of writing, the CPU searches for a blank block downstream from the last block used for writing and writes a writing start mark to the blank block found.

REFERENCES:
patent: 5544356 (1996-08-01), Robinson
patent: 5559956 (1996-09-01), Sukegawa
patent: 5592662 (1997-01-01), Sanada
patent: 5611067 (1997-03-01), Okamoto
patent: 5627783 (1997-05-01), Miyauchi
patent: 5719808 (1998-02-01), Harari

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