Memory Cell Coding Layout for Multi-Bit Storage Efficiency
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Solution Overview
Problem
As the number of data bits stored in a memory cell increases, the efficiency of memory cells decreases, leading to inefficiencies in data storage and retrieval.
Innovation Solution
A memory device is designed to divide and store data bits in multiple memory cells using a code table that maps data patterns to code patterns, employing encoding and inverting operations to optimize storage and retrieval processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of data bits stored in a memory cell increases, then the storage capacity increases, but the efficiency of memory cells decreases
Solution Approach 1:
The patent divides data bits into multiple groups and stores them in separate memory cells rather than storing all data bits in a single memory cell. This segmentation approach maintains storage capacity while improving efficiency by allowing parallel access and reducing the complexity of reading individual bits from highly populated cells.
Solution Approach 2:
The patent transitions from a single-dimension storage approach (one memory cell containing all data bits) to a multi-dimensional approach (multiple memory cells each containing portions of data bits). This dimensional expansion resolves the contradiction by distributing data across multiple storage locations, thereby maintaining capacity while enhancing access efficiency.
2Quantity of substance
If the number of states of memory cells increases to store more data bits, then the storage density increases, but the complexity of encoding and decoding increases
Solution Approach 1:
The patent segments data bits into multiple groups that can be independently encoded and decoded. By dividing the encoding and decoding tasks across multiple memory cells, the complexity of handling high-density storage is reduced while maintaining the benefit of increased storage capacity.
Solution Approach 2:
The patent performs preliminary encoding operations during the programming phase, organizing data into coded patterns before storage. This preliminary action simplifies subsequent read operations by pre-processing the data structure, thereby reducing the complexity of real-time decoding while maintaining high storage density.
Data Source
AI summary
The present technology relates to a semiconductor device. According to the present technology, a memory device capable of dividing and storing a plurality of data bits in a plurality of memory cells may include a plurality of memory cells each configured to have a state among a plurality of states, a code table generator configured to generate, based on a plurality of data bits, a code table indicating the plurality of states as code patterns formed by parts of the data bits, the parts corresponding to the respective memory cells, and an internal operation controller configured to divide and store a plurality of target data bits in the plurality of memory cells based on the code table during a program operation.


