Patent ID: 7958288
Filing Date: 2011-06-07
Classification: G06F,G11C,Y02D

Abstract:
1. A memory system comprising: a first nonvolatile memory to store user data; a second nonvolatile memory to store management data; a controller to control read/write of data with respect to the first and second nonvolatile memories, the controller being configured to compare given management data to be written into the second nonvolatile memory with management data held by the second nonvolatile memory, configured to write the given management data into the second nonvolatile memory when the given management data is not the same as the management data held by the second nonvolatile memory, and configured to prevent the given management data from being written into the second nonvolatile memory when the given management data is the same as the management data held by the second nonvolatile memory; and a conversion unit to perform data conversion to write data in the second nonvolatile memory with a bit width smaller than that of data outputted from the first nonvolatile memory, when data is transferred from the first nonvolatile memory to the second nonvolatile memory.