MEMORY SYSTEM AND MANAGEMENT METHOD THEROF
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United States of America Patent
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app pub date -
Feb 27, 2014
filing date -
Aug 31, 2011
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Abandoned
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Abstract
A memory system having multiple memory layers is provided. The memory system includes an upper memory layer and an intermediate memory layer comprising a first sub-memory consisting of a nonvolatile memory and a second sub-memory consisting of a volatile memory in a parallel structure positioned below the upper memory layer, and a memory management unit that controls operations of the upper memory layer and the intermediate memory layer. The intermediate memory layer is referred by the upper memory layer, and the memory management unit stores data meeting a predetermined condition among data stored in the second sub-memory into the first sub-memory in advance when a user device comprising the memory system is operating in a normal mode.
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