Single-Barrel Syndrome Decoding for Lower-Power Memory Circuits
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Solution Overview
Problem
Existing decoding techniques for memory sub-systems often require two barrel shifters, consuming more power and time, and occupy significant space in compact computing devices.
Innovation Solution
A syndrome decoding system that uses a single barrel shifter and decision circuitry to perform decoding operations, reducing power consumption, time, and physical footprint by eliminating the need for a second barrel shifter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If two barrel shifters are used for decoding operations, then decoding functionality is achieved, but power consumption increases
Solution Approach 1:
The patent extracts and eliminates the second barrel shifter from the traditional two-barrel-shifter decoding architecture. By removing this component, the system reduces power consumption while maintaining decoding functionality through a reconfigured single-barrel-shifter design that performs equivalent operations with reduced hardware resources.
Solution Approach 2:
The patent merges the functions of two separate barrel shifters into a single barrel shifter by implementing a multi-functional design. The single barrel shifter performs both the first shifting operation (by a first number of bits) and the second shifting operation (by a second number of bits), consolidating hardware resources and reducing overall system complexity.
2Loss of time
If two barrel shifters are used for decoding operations, then decoding functionality is achieved, but time consumption increases
Solution Approach 1:
The patent removes the second barrel shifter from the decoding sequence, eliminating the time required for its operation. The single barrel shifter is configured to perform both shifting operations sequentially, reducing the total decoding time while maintaining the necessary error correction functionality.
Solution Approach 2:
The patent combines both shifting operations into a single barrel shifter operation sequence. By merging these operations, the system reduces the cumulative time required for decoding while using fewer hardware components, achieving both time and complexity reduction.
3Area of stationary object
If two barrel shifters are used for decoding operations, then decoding functionality is achieved, but physical footprint increases
Solution Approach 1:
The patent extracts and removes the second barrel shifter from the decoding architecture, directly reducing the physical footprint of the circuitry. This elimination of redundant hardware components achieves compactness while maintaining decoding capabilities through the optimized single-barrel-shifter design.
Solution Approach 2:
The patent merges the functionality of two barrel shifters into one multi-functional barrel shifter. This consolidation reduces the total area occupied by the decoding circuitry, achieving a smaller physical footprint without sacrificing decoding performance or functionality.
Data Source
AI summary
A method includes receiving, by shift circuitry, a bit string comprising a plurality of bits and determining, based on a shifting indicator, a quantity of bits by which the bit string is to be shifted within the shift circuitry. The method further includes generating a shifted bit string by performing, by the shift circuitry, an operation to shift the bit string by the quantity of bits indicated by the shifting indicator and performing, by decision circuitry coupled to the shift circuitry, an operation to alter one or more of the plurality of bits of the shifted bit string from a logical value of one to a logical value of zero or from a logical value of zero to a logical value of one.