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Disc inspecting method and disc inspecting device

A verification method and signal technology, applied in the direction of optical recording/reproducing/erasing method, recording verification, digital signal error detection/correction, etc., can solve the problems of time-consuming confirmation, trouble, alignment (search difficulty, etc.

Inactive Publication Date: 2012-05-09
SONY CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the shape cannot be seen until development is performed and observation is performed by SEM, which takes time for confirmation, and the efficiency is not satisfactory
In the method of the related art, at the time of observation, the alignment (search) between the formation position of the recording mark and the observation point of the SEM is difficult and cumbersome
In addition, SEM-based observation is necessary, and thus it is difficult to see the overall shape of the recording mark right after cutting

Method used

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  • Disc inspecting method and disc inspecting device
  • Disc inspecting method and disc inspecting device
  • Disc inspecting method and disc inspecting device

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Embodiment Construction

[0020] Hereinafter, preferred embodiments of the present disclosure will be described by way of examples, but the present disclosure is not limited to the following examples.

[0021] The description will be made in the following order.

[0022] 1. Embodiment of the disk inspection device

[0023] 2. Example of Disk Inspection Method

[0024] 1. Embodiment of the disk inspection device

[0025] Hereinafter, an embodiment of the disc inspection device of the present disclosure will be described in detail.

[0026] figure 1 is a diagram illustrating the configuration of the disc inspection apparatus of this embodiment. In this embodiment, a disk manufacturing and inspection apparatus based on the PTM method will be described as an example of the disk inspection apparatus.

[0027] In the PTM method, a disk in which an inorganic resist material is uniformly formed on a disk substrate by a spraying method or the like is used. For example, incomplete oxides of transition meta...

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Abstract

A disc inspecting method includes: forming recording marks on a disc; scanning the recording marks from inside to outside or from outside to inside of the disc by a pickup unit to read a reproduction signal while rotating a spindle to move a slider by each predetermined width; acquiring reproduction data from the reproduction signal in a signal acquiring unit; and determining whether or not the reproduction data is proper in a calculation unit, and optimizing a formation condition of the recording marks when it is determined that the reproduction data is not proper.

Description

technical field [0001] The present disclosure relates to a disc inspection method of an optical information recording medium and the like, and a disc inspection device used in the disc inspection method. Background technique [0002] In the related art, in order to confirm the shape of a recording mark for producing a disc of an optical information recording medium, developing (developing) is performed after the recording mark is formed, and then the formed recording must be confirmed by SEM (Scanning Electron Microscope) or the like. mark. For this reason, the shape cannot be seen until development is performed and observation by SEM is performed, which takes time for confirmation, and the efficiency is not satisfactory. In the method of the related art, at the time of observation, the alignment (search) between the formation position of the recording mark and the observation point of the SEM is difficult and troublesome. In addition, observation based on SEM is necessary...

Claims

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Application Information

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IPC IPC(8): G11B20/18G11B20/00
CPCG11B7/00458
Inventor 小林宏明会田桐铃木明俊
Owner SONY CORP