Patent ID: 9201602
Filing Date: 2015-12-01
Classification: G06F,G11C

Abstract:
1. A host device configured to be coupled with a storage device including a readable and writable nonvolatile memory, the host device comprising: an interface driver for operating the storage device, the interface driver operable in a first mode for supporting read and write operations of the nonvolatile memory in the storage device and in a second mode for supporting only the read operation of the read and write operations of the nonvolatile memory in the storage device; and a controller configured to determine, based on information retrieved from the storage device, whether an operation mode of the storage device is to be recognized as a normal mode in which read and write operations of the nonvolatile memory is possible or a read only mode in which only the read operation of the read and write operations of the nonvolatile memory is possible, and to cause the interface driver to switch from the first mode to the second mode when the nonvolatile memory operates in the read only mode, wherein the controller is further configured to: