| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
We have investigated coding techniques for non-volatile semi-conductor memory. Our study can be divided into four parts:(1) The average performance of Index-Less-Index-Flash-Code (ILIFC) with inversion cells has been evaluated by computer simulation and the worst case performance has been theoreticallty derived. These results show that ILIFC with inversion cells has a good performance. (2) Three construction methods for a parallel-random-input/output-code have been proposed, (a)coset coding method with (7,4) Hamming code, (b) coset coding method with (15,8) Hamming code, (c) a construction method with constant weight code words, (3) Error correcting codes with the generalized Cayley distance have been studied, (4)Using the theory of constraint code, we have proposed several code construction methods for high density solid state non-volatile memory were proposed.
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