Magnetic Reproducing Device Using Dual-Sensitivity Elements
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Solution Overview
Problem
Current magnetic recording and reproducing devices face challenges in achieving higher recording and reproducing density due to limitations in the sensitivity and precision of magnetic signals, particularly in accurately reproducing information from magnetic recording media with varying magnetic signal strengths.
Innovation Solution
A magnetic reproducing and processing device that utilizes multiple reproducing elements with different sensitivities to magnetic signals, acquiring and processing first and second electric signals from these elements to output a reproduced signal with improved precision, enabling higher line recording density and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single reproducing element is used, then the device structure is simple, but the measurement precision of magnetic signals is insufficient
Solution Approach 1:
The reproducing element is divided into multiple segments (first reproducing element and second reproducing element) with different sensitivities to magnetic signals. Each segment processes a portion of the magnetic signal, and their outputs are combined through signal processing to achieve higher overall measurement precision than a single element could provide.
Solution Approach 2:
The patent changes the sensitivity parameter of the reproducing elements by using elements with different magnetic characteristics. The first and second reproducing elements are designed with different sensitivities to magnetic signals, allowing them to respond differently to the same magnetic field variations, which enables more precise measurement through comparative signal processing.
2Productivity
If multiple reproducing elements with different sensitivities are used, then the recording reproduction density is improved, but the device complexity increases
Solution Approach 1:
The reproducing function is segmented across multiple elements with different sensitivities, allowing simultaneous capture of different signal strength ranges. This segmentation enables higher effective recording density by properly utilizing both strong and weak magnetic signals from the recording medium.
Solution Approach 2:
The signal processing system uses feedback mechanisms to combine the outputs from multiple reproducing elements. The processed signals are fed back through equalization and decoding circuits that adjust and optimize the combined output, achieving higher effective recording density through intelligent signal integration.
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 achieves higher precision and accuracy in reproducing magnetic information by leveraging the distinct sensitivities of multiple reproducing elements, thereby enhancing the recording and reproducing density in magnetic recording media.
Implementation Method 1
a first reproducing element and a second reproducing element... a first electric signal obtained by reproducing information recorded in a first recording area of a magnetic recording medium by a first reproducing element
Data Source
AI summary
According to one embodiment, a magnetic reproducing and processing device includes an acquirer and a processor. The acquirer is configured to acquire a first electric signal obtained by reproducing information recorded in a first recording area of a magnetic recording medium by a first reproducing element and a second electric signal obtained by reproducing the information recorded in the first recording area by a second reproducing element. A first sensitivity of the first reproducing element to a magnetic signal recorded on the magnetic recording medium is different from a second sensitivity of the second reproducing element to the magnetic signal. The processor is configured to output a reproduced signal corresponding to the information recorded in the first recording area based on the first electric signal and the second electric signal acquired by the acquirer.