Verified purge for flash storage device

Details Verified purge for flash storage device Verified purge for flash storage device

2011-04-19

2011-04-19

Ho, Hoai V (Department: 2827)

Static information storage and retrieval

Floating gate

Particular biasing

C365S185110, C365S158000, C365S185280, C365S185290

Reexamination Certificate

active

07929354

ABSTRACT:
A flash storage device includes flash storage units that are purged in response to a condition or command wherein, during or subsequent to the purge, the purge is verified. A flash controller interface receives a command for purging the flash storage device and provides a purge command to flash controllers in the flash storage device. Alternatively, the flash storage device detects a condition in response to which the flash controller interface provides a purge command to the flash controllers. Each flash controller independently erases a flash storage unit in response to receiving the purge command such that the flash storage units are erased substantially in parallel with each other. The purge of the flash storage device is subsequently verified.

REFERENCES:
patent: 6804151 (2004-10-01), Iijima
patent: 2003/0037295 (2003-02-01), Galzur et al.
patent: 2003/0225962 (2003-12-01), Hirosawa
patent: 2006/0117393 (2006-06-01), Merry et al.
patent: 2006/0245272 (2006-11-01), Hartono et al.

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