Magnetic Memory Write Control Circuit Power Optimization
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Solution Overview
Problem
Magnetic memory technologies face challenges in reducing power consumption during data writing operations, as existing methods require significant current flows to generate induction magnetic fields, leading to high power consumption.
Innovation Solution
The magnetic memory employs a write method where a current is flowed through a write line to form a magnetic wall for writing data of one value and no current is flowed for writing data of another value, thereby reducing power consumption by minimizing the induction magnetic field generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a current is flowed through a write line to generate an induction magnetic field for writing data, then data writing capability is improved, but power consumption increases
Solution Approach 1:
The patent applies local quality by creating a magnetic wall only at the specific location where data writing is required, rather than generating induction magnetic fields throughout the entire magnetic material column. This localized approach allows current to be flowed through the write line only when and where needed, reducing overall power consumption while maintaining data writing capability at the target position
Solution Approach 2:
The patent uses preliminary action by first forming a magnetic wall in the magnetic material column before writing data. This magnetic wall serves as a localized magnetic field concentration point that facilitates subsequent data writing operations. By preparing the magnetic wall in advance, the system can write data more efficiently with reduced current requirements compared to generating induction magnetic fields directly during the writing process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces power consumption during data writing operations by selectively using current flow to form or avoid magnetic walls in magnetic domains, optimizing energy usage in magnetic memory systems.
Implementation Method 1
a current is flowed through a write line passing near one end of the magnetic material column if writing data having a first value into the magnetic material column
Data Source
AI summary
According to one embodiment, there is provided a magnetic memory including a magnetic material column, a shift control circuit, and a write control circuit. The shift control circuit is connected to the magnetic material column. The write control circuit is configured to cause a current to flow through a write line passing near one end of the magnetic material column if writing data having a first value into the magnetic material column, and cause no current to flow through the write line if writing data having a second value into the magnetic material column.