17979801. MEMORY CONTROLLERS, STORAGE DEVICES, AND CONTROLLING METHODS OF STORAGE DEVICES simplified abstract (SAMSUNG ELECTRONICS CO., LTD.)
MEMORY CONTROLLERS, STORAGE DEVICES, AND CONTROLLING METHODS OF STORAGE DEVICES
Organization Name
Inventor(s)
Heewoong Kang of Suwon-si (KR)
MEMORY CONTROLLERS, STORAGE DEVICES, AND CONTROLLING METHODS OF STORAGE DEVICES - A simplified explanation of the abstract
This abstract first appeared for US patent application 17979801 titled 'MEMORY CONTROLLERS, STORAGE DEVICES, AND CONTROLLING METHODS OF STORAGE DEVICES
Simplified Explanation
The abstract describes a memory controller that manages the read disturb strength of word lines in memory blocks. It includes a weight management unit that stores a weight for each word line based on its read disturb strength. A counter increases the read count of a management group, which includes a target word line, based on the weight obtained from the weight management unit. The read count is increased when the controller receives a read request for the target word line from an external host device. A verification operation determination unit decides whether to perform a word line verification operation based on a comparison of a reference interval count with the read count of the management group.
- Memory controller manages read disturb strength of word lines in memory blocks.
- Weight management unit stores a weight for each word line based on its read disturb strength.
- Counter increases the read count of a management group, including a target word line, based on the weight obtained from the weight management unit.
- Read count is increased when the controller receives a read request for the target word line from an external host device.
- Verification operation determination unit decides whether to perform a word line verification operation based on a comparison of a reference interval count with the read count of the management group.
Potential Applications
- Memory controllers in electronic devices such as computers, smartphones, and tablets.
- Data storage systems that require efficient management of memory blocks.
Problems Solved
- Minimizes read disturb effects on word lines in memory blocks.
- Optimizes the read count of management groups to prevent excessive read disturbs.
- Determines whether a word line verification operation is necessary based on read counts.
Benefits
- Improved reliability and lifespan of memory blocks.
- Enhanced performance and efficiency of memory controllers.
- Reduced risk of data corruption or loss due to read disturb effects.
Original Abstract Submitted
A memory controller may include: a weight management unit configured to store a weight based on a read disturb strength of each of the plurality of word lines of the plurality of memory blocks; a counter configured to increase a read count of a management group that includes a target word line, based on the weight of the target word line obtained from the weight management unit, the counter configured to increase the read count in response to the controller receiving a read request for the target word line from an external host device; and a verification operation determination unit configured to determine whether to perform or to not perform a word line verification operation based on a comparison of a reference interval count with the read count of the management group that includes the target word line.
