Patent ID: 8411526
Filing Date: 2013-04-02
Classification: G06F,G11C

Abstract:
1. A storage device comprising: a volatile memory configured to store user data; an auxiliary power source configured to supply power to the volatile memory when power from a main power source to the volatile memory is cut off; a nonvolatile memory configured to be written with the user data stored in the volatile memory, write incomplete information indicating the user data stored in the volatile memory, and power off information indicating that power from the main power source is cut off; a write module configured to be supplied with power from the auxiliary power source when power from the main power source is cut off, to write the write incomplete information to the nonvolatile memory, to write the user data stored in the volatile memory to the nonvolatile memory after writing the write incomplete information, and to write the power off information to the nonvolatile memory after writing the user data; and an inhibition module configured to, if the power off information is not written in the nonvolatile memory when the volatile memory is supplied with power from the main power source, inhibit the user data indicated by the write incomplete information from being read from the nonvolatile memory.