Memory controller, data storage device, and memory control method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 5, 2017
Grant Date -
Aug 6, 2015
app pub date -
Aug 20, 2013
filing date -
Sep 19, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
To reduce deterioration of non-volatile memory and write data at higher speed, writing data is stored in a ReRAM when a page utilization rate R is lower than a threshold Rth1 and/or the writing data is frequently-rewritten data. With an empty space Semp2 in the ReRAM being less than a threshold Sth (step S110), when the data in the ReRAM is infrequently-rewritten data and the page utilization rate R obtained if target data is stored in a flash memory 22 is equal to or higher than a threshold value Rth3 (steps S120 and S130), data of logical sectors contained in N logical page addresses stored in a transfer list is read from the ReRAM to be written to the flash memory (steps S140 to S160). These steps reduce deterioration of the flash memory and allow higher data writing.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully