Magnetic Storage Track Multi-Valued Data Recording
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Solution Overview
Problem
Existing magnetic storage devices can only record two different values per magnetic domain, limiting their ability to implement multi-valued storage and failing to meet the increasing demand for more complex data applications.
Innovation Solution
A magnetic storage apparatus with multiple write and read apparatuses positioned along a storage track, allowing for the generation of multiple magnetization directions parallel to magnetic domain walls, enabling the recording of multiple data values by using induced magnetic fields to magnetize domains in different directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a magnetic field perpendicular to the magnetic domain wall is used for writing data, then data can be stored in the magnetic domain, but only two different values (0 and 1) can be recorded, limiting multi-valued storage capability
Solution Approach 1:
The patent transitions from recording data using only perpendicular magnetization (one dimension) to utilizing in-plane magnetization directions (adding another dimension). By employing multiple write apparatuses positioned at different angular positions around the storage track, the system can magnetize domains in various in-plane directions (0°, 45°, 90°, 135°), enabling multi-valued storage beyond the traditional binary 0 and 1 states.
2Quantity of substance
If multiple magnetization directions are implemented to enable multi-valued storage, then storage capacity increases, but the device structure becomes more complex with multiple write and read apparatuses
Solution Approach 1:
The patent divides the storage system into multiple independent write apparatuses and read apparatuses, each responsible for specific magnetization directions. The write track is segmented into multiple sectors with write apparatuses positioned at different angular positions, allowing parallel operation and distributed data writing. This segmentation enables the system to achieve multi-valued storage capacity while managing complexity through modular architecture.
Solution Approach 2:
The patent designs write apparatuses and read apparatuses that can operate with multiple functions. Each write apparatus can generate magnetic fields in specific directions, and the same apparatus structure is replicated and positioned at different locations to handle different magnetization directions. This multi-functional design allows the system to achieve enhanced storage capacity using standardized components rather than requiring entirely different mechanisms for each function.
3Adaptability or versatility
If in-plane magnetization directions are used instead of perpendicular magnetization, then multi-valued storage becomes possible, but the magnetization control becomes more difficult
Solution Approach 1:
The patent implements local quality by positioning each write apparatus at specific angular locations around the storage track, where each apparatus is optimized to generate magnetic fields in a particular in-plane direction. The magnetic write head and pole piece structures are locally configured to produce the desired field orientation for their specific position. This localized optimization simplifies the control of magnetization directions, as each apparatus handles a specific direction rather than requiring a single apparatus to switch between multiple directions.
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 solution increases storage capacity by allowing multiple data values to be recorded, enhancing data density and write speed, and overcoming the limitations of two-state storage.
Implementation Method 1
a first write apparatus... is configured to write first data or second data to a magnetic domain moving to the first write apparatus... the first data is represented by a first magnetization direction... the second data is represented by a second magnetization direction
Implementation Method 2
the drive apparatus is connected to the magnetic storage track and is configured to send a drive signal to the magnetic storage track, to drive magnetic domains in the magnetic storage track to move
Data Source
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AI summary
A magnetic storage apparatus (100) is disclosed, and is configured to access data. The magnetic storage apparatus (100) includes a magnetic storage track (10), a first write apparatus (21), a second write apparatus (22), and a drive apparatus (30), where the first write apparatus (21) and the second write apparatus (22) are located at different positions on the magnetic storage track (10); the first write apparatus (21) is configured to write first data "0" or second data "1", where the first data "0" is represented by a first magnetization direction (Aa) of a magnetic domain, and the second data "1" is represented by a second magnetization direction (Bb) of a magnetic domain; and the second write apparatus (22) is configured to write third data "2" and fourth data "3", where the third data "2" is represented by a third magnetization direction (Cc) of a magnetic domain, the fourth data "3" is represented by a fourth magnetization direction (Dd) of a magnetic domain, and the first magnetization direction (Aa), the second magnetization direction (Bb), the third magnetization direction (Cc), and the fourth magnetization direction (Dd) are different from each other.