Patent ID: 11942137
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. The semiconductor memory device of claim 12, wherein:
the access pattern profiler includes:
an aggressor row classification module configured to map first row addresses included in the first row access pattern to first aggressor row identifiers;
a similarity calculation module configured to generate a first counted value indicating a first similarity between first refresh row addresses and the first rows addresses, the first refresh row addresses from among refresh row addresses being frequently refreshed during the first refresh interval during which the refresh row addresses are refreshed;
a distribution generation module configured to generate a distribution of the number of accesses of each of the first aggressor row identifiers during the first reference time interval; and
a profile generator configured to generate the first access pattern profile based on the first aggressor row identifiers, the first similarity, and the distribution, and

the aggressor row classification module, the similarity calculation module, and the distribution generation module operate in parallel.