US 12,249,363 B2
Method and apparatus for controlling refresh period of extended memory pool
Seon-Young Kim, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed on Nov. 4, 2022, as Appl. No. 17/980,818.
Claims priority of application No. 10-2022-0011535 (KR), filed on Jan. 26, 2022.
Prior Publication US 2023/0238044 A1, Jul. 27, 2023
Int. Cl. G11C 11/406 (2006.01)
CPC G11C 11/40611 (2013.01) [G11C 11/40622 (2013.01); G11C 11/40626 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for controlling a refresh period of an extension memory pool comprising:
collecting information about each of preset unit DRAM cell sets of the extension memory pool;
setting an initial refresh period for each of the DRAM cell sets; and
adjusting the refresh period based on the information collected from the DRAM cell sets,
wherein collecting the information about each of the preset unit DRAM cell sets comprises collecting temperatures of the unit DRAM cell sets and information about whether an error occurs, and
wherein adjusting the refresh period comprises:
when an error occurs in a specific DRAM cell, decreasing a refresh period of a unit DRAM cell set including the DRAM cell in which the error occurs,
again decreasing the refresh period of the unit DRAM cell set when an error occurs again within a preset time period based on the adjusted refresh period, and
increasing the refresh period of the unit DRAM cell set when no error occurs within the preset time period.