Kabushiki kaisha toshiba (20240096359). MAGNETIC DISK DEVICE AND METHOD simplified abstract

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MAGNETIC DISK DEVICE AND METHOD

Organization Name

kabushiki kaisha toshiba

Inventor(s)

Yu Yamamoto of Meguro Tokyo (JP)

Takao Abe of Yokohama Kanagawa (JP)

MAGNETIC DISK DEVICE AND METHOD - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240096359 titled 'MAGNETIC DISK DEVICE AND METHOD

Simplified Explanation

The patent application describes a magnetic disk device with servo sectors containing servo information for positioning control of the magnetic head. When a read error occurs with a specific post code, a different correction value is used for positioning the magnetic head.

  • Magnetic disk device with servo sectors for positioning control:
 - The device includes a magnetic disk, magnetic head, and controller.
 - Servo sectors in the disk contain servo information for head positioning.
 - Specific post codes indicate correction values for positioning errors.
  • Improved positioning control mechanism:
 - Different correction values are used based on specific post codes.
 - Enhances accuracy in positioning the magnetic head during read and write operations.
  • Potential Applications:
 - Data storage devices
 - Computer hard drives
 - Server systems
  • Problems Solved:
 - Improved accuracy in head positioning
 - Enhanced data read and write operations
  • Benefits:
 - Increased data storage reliability
 - Enhanced performance of magnetic disk devices
  • Potential Commercial Applications of this Technology:
 - Data storage industry
 - Computer hardware manufacturers
 - Server system providers
  • Possible Prior Art:
 - Previous magnetic disk devices with servo sectors for positioning control.
      1. Unanswered Questions:
        1. How does the controller determine the appropriate correction value based on the specific post code?

The controller likely has a lookup table or algorithm to map post codes to corresponding correction values.

        1. What impact does using different correction values have on the overall performance of the magnetic disk device?

Using different correction values based on specific post codes may improve the accuracy and efficiency of head positioning, leading to better overall performance of the device.


Original Abstract Submitted

according to embodiments, a magnetic disk device includes a magnetic disk, a magnetic head, and a controller. in the magnetic disk, a plurality of servo sectors is arranged in a circumferential direction. servo information including a post code indicating a repeatable runout (rro) correction amount is written to each of the plurality of servo sectors. the magnetic head writes and reads data to and from the magnetic disk. in positioning control for the magnetic head, when a read error of a first post code continuously occurs, the controller uses a first rro correction value, which is different from a second rro correction value based on the rro correction value indicated by the first post code. the first post code is a post code of a first servo sector, which is one of the plurality of servo sectors.

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