Latch Element Sensing with Error Correction During Memory Initialization
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Solution Overview
Problem
Memory sub-systems experience a high number of data errors during initialization due to the use of non-optimized read parameters, leading to inefficiencies and errors in data retrieval.
Innovation Solution
Implementing a sense operation with error correction that utilizes data redundancy and concurrent selection of multiple latch elements to reinforce signal output, reducing the need for decoder circuitry and minimizing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If non-optimized read parameters are used during initialization, then device complexity is reduced, but data error rate increases significantly
Solution Approach 1:
The patent applies preliminary action by performing a sense operation with error correction during the initialization phase to retrieve and verify initialization parameters before normal operation begins. This preliminary error correction ensures data integrity is established before the system transitions to optimized read modes, resolving the contradiction between simplified initialization and data reliability.
Solution Approach 2:
The patent uses copying by reading multiple copies of the same data from memory cells during initialization. By retrieving multiple copies and performing error correction on them, the system can identify and correct errors without requiring complex read parameter optimization, thus maintaining low device complexity while improving reliability.
2Measurement precision
If multiple latch elements are concurrently selected to reinforce signal output, then sensing accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by concurrently selecting multiple latch elements that contain the same data and combining their signal outputs through signal reinforcement. This merging of multiple signal sources improves sensing accuracy by providing redundant signal paths, while the concurrent selection mechanism keeps the implementation relatively simple compared to sequential processing approaches.
3Reliability
If error correction operations are performed during initialization, then data reliability is improved, but number of operations increases
Solution Approach 1:
The patent performs error correction as a preliminary action during initialization, establishing data reliability before normal operations begin. By completing error correction during the initialization phase rather than during subsequent operations, the system ensures data integrity without impacting the speed of normal data retrieval operations.
Solution Approach 2:
The patent reads multiple copies of data during initialization and performs error correction on these copies. By processing multiple copies in parallel during initialization, the system can establish reliable data without requiring extensive sequential operations, thus improving reliability while minimizing the impact on initialization speed.
Data Source
AI summary
A pulse signal is simultaneously generated on a respective select line of each of two or more latch elements of a set of latch elements using a select line signal generator. Each of the two or more latch elements store sensed copies of a stored data. An output is determined based on a sensing of a conducting line driven by the two or more latch elements responsive to the pulse signal.