Kabushiki kaisha toshiba (20240096349). MAGNETIC DISK DEVICE AND METHOD OF ADJUSTING PREHEAT TIME simplified abstract

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MAGNETIC DISK DEVICE AND METHOD OF ADJUSTING PREHEAT TIME

Organization Name

kabushiki kaisha toshiba

Inventor(s)

Hiroshi Isokawa of Yokohama Kanagawa (JP)

Takuya Matsumoto of Kawasaki Kanagawa (JP)

MAGNETIC DISK DEVICE AND METHOD OF ADJUSTING PREHEAT TIME - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240096349 titled 'MAGNETIC DISK DEVICE AND METHOD OF ADJUSTING PREHEAT TIME

Simplified Explanation

The patent application describes a magnetic disk device with magnetic disks, magnetic heads with heat-assist units, and a control unit that adjusts the preheat time based on the quality of the recording signal.

  • Magnetic disk device with heat-assist units:
 - Magnetic heads include heat-assist units for preheating the near-field optical element without erasing data.
 - Preheating current is adjusted to prevent data loss while improving recording quality.
  • Control unit for adjusting preheat time:
 - Measures time from start of write to convergence of recording signal quality index.
 - Adjusts preheat time for each magnetic head to optimize recording process.

Potential Applications

The technology can be applied in data storage devices, such as hard drives, to improve data writing efficiency and quality.

Problems Solved

1. Prevents data loss during preheating process. 2. Optimizes recording signal quality for better data storage performance.

Benefits

1. Improved data writing efficiency. 2. Enhanced recording signal quality. 3. Reduced risk of data loss during preheating.

Potential Commercial Applications

Optimized data storage devices for businesses and consumers seeking high-performance storage solutions.

Possible Prior Art

Prior art may include patents related to magnetic disk devices with heat-assist units or control units for adjusting preheat time.

Unanswered Questions

How does the technology impact data transfer speeds in magnetic disk devices?

The article does not provide information on how the technology affects data transfer speeds in magnetic disk devices.

What are the potential cost implications of implementing this technology in data storage devices?

The article does not address the potential cost implications of incorporating this technology into data storage devices.


Original Abstract Submitted

according to one embodiment, a magnetic disk device includes magnetic disks, a plurality of magnetic heads, and a control unit. a plurality of magnetic heads each includes a heat-assist unit which applies a preheating current of such magnitude that data already written to the magnetic disk is not erased to a near-field optical element for the preheat time. the control unit measures the time elapsing from a start of write to the time when a value of an index indicating the quality of a recording signal of data written by the magnetic head converges to within a first threshold range, and adjusts the preheat time for each of the magnetic heads in such a manner that the measured lapse time becomes less than or equal to a second threshold.