Patent ID: 9355701
Filing Date: 2016-05-31
CPC Classification: G06F,G11C

Claim Text:
1. A data write method for a nonvolatile memory device, the method comprising: receiving externally provided write data to be stored in selected memory cells during a write operation; reading previous data previously stored in the selected memory cells; modulating the write data to generate modulated write data; counting a first number of flip bits and a first number of switching bits that result when the previous data is overwritten by the write data, and counting a second number of flip bits and a second number of switching bits that result when the previous data is overwritten by the modulated write data; selecting one of the write data and the modulated write data to be selected data based on the first number of flip bits, the first number of switching bits, the second number of flip bits, and the second number of switching bits; and writing the selected data to the selected memory cells.