Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 25, 2009
Patent Application Number
11859881
Date Filed
September 24, 2007
Patent Citations Received
0
0
Patent Primary Examiner
Patent abstract
A memory refresh method applicable in a system memory is disclosed. The memory system comprises a plurality of memory ranks. It is to determine whether an access request corresponds to the memory rank, and an idle auto-refresh number of the memory rank is calculated if there is no access request corresponds to the memory rank. The memory rank is switched from an auto-refresh mode to a self-refresh mode when the idle auto-refresh number of the memory rank reaches a predetermined value.
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