Magnetic Recording Device Voltage Control for Density
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Solution Overview
Problem
Current magnetic recording devices face challenges in enhancing recording density due to limitations in the generation and control of alternating magnetic fields for efficient data storage.
Innovation Solution
A magnetic recording device is designed with a magnetic head comprising a magnetic element between two poles, a coil, and a controller that supplies a recording current and element voltage to generate an alternating magnetic field, optimizing differential resistance peaks to improve recording density by controlling the applied voltage and current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional magnetic recording methods are used, then the recording process is simple, but the recording density cannot be improved
Solution Approach 1:
The patent applies dynamics by making the element voltage adjustable and variable during the recording operation. The controller dynamically changes the element voltage applied to the magnetic element while maintaining a constant recording current through feedback control, enabling optimization of differential resistance peaks to improve recording density.
Solution Approach 2:
The patent changes the parameter of element voltage to optimize recording performance. By varying the element voltage while keeping recording current constant, the system achieves optimal differential resistance peaks, thereby improving recording density without increasing device complexity.
Solution Approach 3:
The patent implements feedback control where the controller monitors the recording current and adjusts the element voltage to maintain constant recording current. This feedback mechanism enables precise control of the magnetic element's operation, allowing optimization of recording density while managing control complexity.
2Manufacturing precision
If element voltage is increased to generate stronger alternating magnetic field, then recording density improves, but differential resistance control becomes difficult
Solution Approach 1:
The patent uses feedback control to maintain constant recording current by adjusting the element voltage. This feedback mechanism ensures that even when element voltage changes to optimize differential resistance peaks, the recording current remains stable, thereby maintaining differential resistance control reliability while improving recording density.
Solution Approach 2:
The patent optimizes recording density by changing the element voltage parameter to achieve optimal differential resistance peaks. By carefully controlling the element voltage within specific ranges while maintaining constant recording current, the system improves recording density without compromising differential resistance stability.
3Manufacturing precision
If recording current is increased to enhance magnetic field strength, then recording density improves, but energy consumption increases
Solution Approach 1:
The patent improves recording density by optimizing the element voltage parameter rather than increasing recording current. By applying element voltage to generate alternating magnetic fields and achieve optimal differential resistance peaks, the system enhances recording performance without the energy penalty associated with increasing recording current.
Solution Approach 2:
The patent replaces the conventional approach of using increased recording current to enhance magnetic field strength with an alternative method using element voltage to generate alternating magnetic fields. This substitution reduces energy consumption while achieving improved recording density through optimal differential resistance control.
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
The device effectively generates a strong alternating magnetic field with a stable frequency, enhancing recording density and data storage efficiency by managing the voltage and current to achieve optimal differential resistance peaks.
Implementation Method 1
a coil; and a controller electrically connected to the magnetic element and the coil. The controller is configured to perform a recording operation. In the recording operation, the controller is configured to supply a recording current to the coil while applying an element voltage between the first terminal and the second terminal
Implementation Method 2
When an applied voltage applied between the first terminal and the second terminal is changed while the recording current is supplied to the coil, a differential resistance of the magnetic element becomes a first differential resistance peak when the applied voltage is a first voltage. The differential resistance becomes a second differential resistance peak when the applied voltage is a second voltage
Data Source
AI summary
According to one embodiment, a magnetic recording device includes a magnetic head and a controller. The magnetic head includes first and second magnetic poles, a magnetic element provided between the first magnetic pole and the second magnetic pole, first and second terminals electrically connected to one end and another end of the magnetic element, respectively, and a coil. The controller is electrically connected to the magnetic element and the coil, and performs a recording operation. In the recording operation, the controller supplies a recording current to the coil while applying an element voltage between the first and second terminals. When the applied voltage is changed while the recording current is supplied, a differential resistance of the magnetic element becomes a first differential resistance peak when the applied voltage is a first voltage, and becomes a second differential resistance peak when the applied voltage is a second voltage.