17948556. DRIFT COMPENSATION FOR CODEWORDS IN MEMORY simplified abstract (Micron Technology, Inc.)
Contents
DRIFT COMPENSATION FOR CODEWORDS IN MEMORY
Organization Name
Inventor(s)
Marco Sforzin of Cernusco Sul Naviglio (IT)
Luca Barletta of Gallarate (IT)
Marco Pietro Ferrari of Milano (IT)
DRIFT COMPENSATION FOR CODEWORDS IN MEMORY - A simplified explanation of the abstract
This abstract first appeared for US patent application 17948556 titled 'DRIFT COMPENSATION FOR CODEWORDS IN MEMORY
Simplified Explanation
The patent application describes a method for drift compensation for codewords in memory devices.
- Memory device with an array of memory cells
- Circuitry to sense and determine threshold voltage values of each cell of a codeword
- Sorting of threshold voltage values and calculation of second derivative values of cell metrics
- Inputting cell metrics to a Pearson detector to determine originally programmed data of the codeword
---
- Potential Applications
- Data storage devices
- Error correction in memory systems
- Problems Solved
- Drift in threshold voltage values of memory cells
- Accurate retrieval of originally programmed data in memory devices
- Benefits
- Improved data reliability
- Enhanced memory performance
- Extended lifespan of memory devices
Original Abstract Submitted
The present disclosure includes apparatuses, methods, and systems for drift compensation for codewords in memory. An embodiment includes a memory device having an array of memory cells, and circuitry to sense a codeword stored in the array, determine a threshold voltage value of each cell of the codeword, sort the threshold voltage values, determine a second derivative value of a cell metric for a number of the cells of the codeword based on the threshold voltage value of that respective cell, the threshold voltage value immediately preceding the threshold voltage value of that respective cell in the sorted values, and a value proportional to a total quantity of the cells of the codeword, determine the cell metric for which the determined second derivative value has a greatest value, input the determined cell metric to a Pearson detector, and determine originally programmed data of the codeword using the Pearson detector.
