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Disk apparatus, information recording and reproducing method, and disk rotation speed control method

A technology of rotation speed and control method, applied in recording/reproduction/deletion method, recording of information on magnetic disk, digital recording/reproduction, etc., can solve the problem that it is difficult to apply alternate areas, etc., and achieve the effect of ensuring adaptability

Inactive Publication Date: 2006-01-04
HITACHI-LG DATA STORAGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned prior art is only applicable to a disk-shaped information recording medium (hereinafter referred to as a disk) in which alternating areas are provided in each of a plurality of divided areas, and it is difficult to apply to the innermost peripheral position or Discs with alternating regions at the outermost periphery

Method used

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  • Disk apparatus, information recording and reproducing method, and disk rotation speed control method
  • Disk apparatus, information recording and reproducing method, and disk rotation speed control method
  • Disk apparatus, information recording and reproducing method, and disk rotation speed control method

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Embodiment Construction

[0011] Preferred embodiments of the present invention will be described below using the drawings.

[0012] exist figure 1 Among them, 100 is an optical disc such as a DVD-RAM, 300 is a disc motor for rotating and driving the optical disc 100, 310 is a disc motor drive circuit as a disc motor drive mechanism for driving the disc motor 300, and 200 is a disc irradiating laser light to the disc 100 while receiving reflected laser light. 210 is based on the signal reproduced from the reflected laser light from the optical pickup 200 and forms a focus and tracking error signal forming circuit for a focus error signal and a tracking error signal, and 220 is based on the focus and tracking error signal forming circuit 210. Output and form the focus / tracking control circuit of the control signal that controls the objective lens (not shown) of optical pick-up 200, 430 is the laser drive circuit that drives the laser diode in the optical pick-up 200 based on the record signal, 420 is th...

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Abstract

The present invention provides a disk device which can inhibit the variable quantity of the rotation speed of a disk during an alternation processing to ensure the adaptability. During the alternation processing, whether the rotation speed of the disk at the semidiameter position of the disk of a defect block is within the fiducial speed range is judged, based on the judging result, the rotation speed of the disk in an alternation area is set as the speed within the fiducial speed range at least to inhibit the rotation speed difference of the disks of a user data record area and the alternation area. The control of the rotation speed of the disk of the user data record area and the control of the rotation speed of the disk of the alternation area are processed respectively, which can inhibit the difference of the rotation speeds of disks to ensure the adaptability.

Description

technical field [0001] The present invention relates to a disk device such as an optical disk device, and particularly relates to a technology for controlling the rotational speed of a disk during alternate processing. Background technique [0002] As a prior art related to the present invention, it is described in Japanese Unexamined Patent Publication No. 2-179970, for example. This specification describes a technology in which a rotating disk-shaped information recording medium is divided into a plurality of areas each including a plurality of tracks in the radial direction, and an alternate area and a device for managing the alternate area are provided in each area. Alternately manage areas, make the rotation speed of the disk-shaped information recording medium in each area different, and make the rotation speed in each area constant for recording or reproduction. Change. [0003] The above-mentioned prior art is only applicable to a disk-shaped information recording ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/10G11B20/12G11B19/28G11B7/00G11B5/09G11B15/52G11B20/18
CPCG11B2020/1099G11B19/28G11B20/1883G11B2220/20G11B7/007
Inventor 西村勇三
Owner HITACHI-LG DATA STORAGE