RF Data Writer Field Generator for High Density Storage
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Solution Overview
Problem
The challenge in data storage devices is to accurately manufacture and maintain high frequency magnetic fields with sufficient amplitude and gradient for efficient data bit programming in high areal density environments, as existing technologies face issues with localization, amplitude, and inadvertent data erasure.
Innovation Solution
A data writer with a write pole and a magnetic feature that selectively activates to produce radio frequency signals on an air bearing surface, complementing DC write fields with high frequency signals to enhance data programming gradients and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high frequency magnetic fields are used to increase data writing precision, then data bit areal density improves, but manufacturing difficulty increases due to challenges in localizing and maintaining sufficient amplitude and gradient
Solution Approach 1:
The patent replaces traditional mechanical positioning methods with microwave electromagnetic fields to achieve precise data bit programming. The microwave field interacts with the magnetic medium to enable high-precision writing without relying on mechanical localization of high frequency fields, thus improving manufacturing precision while avoiding the associated manufacturing difficulties
Solution Approach 2:
The patent utilizes microwave frequency electromagnetic fields (radio frequency range) to change the operational parameters of the data writing system. By operating at these frequencies and leveraging resonant interactions with the magnetic medium, the system achieves enhanced writing precision and gradient effects without the manufacturing challenges of traditional high frequency field localization
2Productivity
If high frequency magnetic fields are applied to enhance data programming gradients, then programming performance improves, but inadvertent data erasure occurs
Solution Approach 1:
The patent employs periodic microwave field application to achieve controlled magnetic resonance effects. The periodic nature of the microwave fields allows for precise timing and duration of field application, enabling enhanced programming gradients while avoiding sustained high field exposure that could cause inadvertent erasure
Solution Approach 2:
By utilizing radio frequency electromagnetic fields and controlling their interaction parameters with the magnetic medium, the system achieves improved programming performance through resonant effects while maintaining control over field amplitude and duration to prevent harmful erasure effects
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 configuration increases data bit areal density and optimized programming performance by generating concentrated, high power RF fields that improve data writing precision and efficiency, while maintaining thermal stability and reducing data track inflation.
Implementation Method 1
A controller may selectively activate the magnetic feature to magnetically oscillate and produce a radio frequency signal proximal the write pole on an air bearing surface (ABS)
Data Source
AI summary
A data writing device may be constructed and operated with at least a data writer that has at least a write pole and a magnetic feature. A controller may selectively activate the magnetic feature to magnetically oscillate and produce a radio frequency signal proximal the write pole on an air bearing surface (ABS).