High density write-once recording medium allowing defect management, and method and apparatus for managing defects

Abstract

A high density write-once recording medium allowing defect management, and a method and apparatus for managing defects are provided. According to the high density writing-once recording medium, data is written to the recording medium in tracks or clusters, the written data is verified, and if a defect is found a defective portion is skipped and data corresponding to the defective portion and the following written data are rewritten on a next available recording location. The defect management method using slipping replacement is applied to the high density write-once recording medium in which defects are found, thereby allowing continued recording by slipping defects found in the recording medium and further increasing the reliability of the recording medium.

Description

technical field [0001] The present invention relates to the field of defect management to recording media, and more particularly, to a high-density write-once that allows defect management by slip replacement in defective areas while recording is performed in a verify-after-write mode Recording medium, and defect management method and apparatus. Background technique [0002] In general, defect management methods have been used only for media on which data can be re-recorded and accessed randomly. In the case of a medium capable of being written once, ie, a write-once recording medium, defect management methods are not yet available due to the characteristics of the medium. [0003] Generally, defect management schemes using linear replacement and sliding replacement algorithms have been used. In the defect management method using linear replacement, when a defect occurs in a sector in the recording area while the medium is being used, the defective sector is replaced with ...

AI Technical Summary

Problems solved by technology

[0006] Therefore, defect management using linear replacement has a problem that it cannot be used for write-once recording media that do not support random access

However, this medium has the disadvantage that in case a batch backup is required during the night when there are not many users not accessing the system, when a defect occurs during the backup, the backup does not execute and stops the operation

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