Wear leveling method, and storage system and controller...

Details Wear leveling method, and storage system and controller... Wear leveling method, and storage system and controller...

2008-11-06

2011-12-27

Ellis, Kevin (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711SE12008

Reexamination Certificate

active

08086787

ABSTRACT:
A wear leveling method for a flash is provided, wherein the flash memory includes a plurality of physical blocks grouped into at least a data area and a spare area. The method includes setting a first predetermined threshold value as a wear-leveling start value and randomly generating a random number as a memory erased count, wherein the random number is smaller than the wear-leveling start value. The method also includes counting the memory erased count each time when the physical blocks are erased and determining whether the memory erased count is smaller than the wear-leveling start value, wherein a physical blocks switching is performed between the data area and the spare area when the memory erased count is not smaller then the wear-leveling start value. Accordingly, it is possible to uniformly use the physical blocks, so as to effectively prolong a lifetime of the store system.

REFERENCES:
patent: 7562202 (2009-07-01), Potteiger
patent: 7613876 (2009-11-01), Bruce et al.
patent: 7649794 (2010-01-01), Yeh
patent: 2009/0113121 (2009-04-01), Lee et al.
patent: 2009/0193174 (2009-07-01), Reid
patent: 2009/0249052 (2009-10-01), Sareen et al.
patent: 2009/0259896 (2009-10-01), Hsu et al.
patent: 2009/0287875 (2009-11-01), Lin
patent: 2009/0307412 (2009-12-01), Yeh
patent: 2010/0161880 (2010-06-01), You

Affiliated with

Also associated with

Rating

Wear leveling method, and storage system and controller... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wear leveling method, and storage system and controller..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wear leveling method, and storage system and controller... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4254107