| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
|---|
| Outline of Final Research Achievements |
In this research, effective codes for multi level cell flash memory capable of storing multi-bit value by one memory cell are developed. Here, multi level cell flash memory stores multi-bit value by gradually controlling the charge accumulated in the floating gate. We have developed a single adjacent error correction code that utilizes the fact that errors occurring in memory cells are limited to errors to neighboring values. In addition, in the multi-level cell flash memory, considering that multi-page programming is used to determine the value of a plurality of cells in a page from upper bits and a bit error correction code is used for each page. We have proposed an improved decoding method which achieves lower bit error rate.
|
