Erase history-based flash writing method

Details Erase history-based flash writing method Erase history-based flash writing method

2007-03-29

2010-10-12

Gu, Shawn X (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S156000, C711SE12078

Reexamination Certificate

active

07814263

ABSTRACT:
A method for writing into a flash memory device includes calculating a physical block for writing data thereto, checking whether the calculated physical block has been erased since a last power-up of the device and if it has been erased writing the data, or, if it has not been erased performing a refresh operation thereby obtaining a newly erased block since a last power-up that the data can be written to. The newly erased block may be the calculated block or another block of the flash memory.

REFERENCES:
patent: 5404485 (1995-04-01), Ban
patent: 5937425 (1999-08-01), Ban
patent: 6148354 (2000-11-01), Ban et al.
patent: 6988175 (2006-01-01), Lasser
patent: 2004/0246779 (2004-12-01), Honda et al.

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