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US 10,319,428 B2Granted
Control method of solid state storage device
AssigneeLite-On Technology Corporation
InventorsShih-Jia Zeng, Jen-Chien Fu, Tsu-Han Lu, Kuan-Chun Chen
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Abstract
A control method of a solid state storage device includes the following steps. Firstly, a block of a memory cell array is checked. Then, a judging step is performed to judge whether a data storage time period of the block exceeds a threshold period. If the data storage time period of the block exceeds the threshold period, the block is tagged or a data of the block is refreshed.
Claims8
A control method for refreshing a solid state storage device, the control method comprising steps of:
- checking a block of a memory cell array;
- judging whether a data storage time period of the block exceeds a threshold period, wherein said data storage time is an age of data storage on the block before refreshing;
- if the data storage time period of the block exceeds the threshold period, then tagging the block or refreshing a data of the block;
- if the data storage time period of the block does not exceed the threshold period and a program erase count of the block exceeds a threshold count value, then acquiring a block information and an environment information, and predicting a possibility of read retry in the next few days according to the block information and the environment information;
- and
- if the possibility of read retry in the next few days is higher than a threshold possibility value, then tagging the block or refreshing the data of the block.
3 more elements
Dependencies are inferred from the claim text.