Recording medium, recording apparatus, reproduction apparatus, recording method and reproduction method

Abstract

In a write-once media, by using a selected area such as an area starting from a postscript-recording point in the main data area as an alternate area, by determining whether or not an address specified in a request such as a write request is an address at which data has been recorded on the basis of information on a sequential recording range and by recording pieces of alternate-address management information for replacing defective locations on the media and for renewing data recorded on the media in a table by letting the pieces of information coexist in the table, defective locations on the media can be replaced with other locations and data already recorded on the media can thus be renewed even without providing pre-allocated alternate area on the media. In addition, if the media is provided with an alternate area and the alternate area becomes insufficient for alternate-address processing, a selected region in the main data area can be used as a region supplementary to the insufficient alternate area. An example of the region is an area starting from a postscript-recording point mentioned above.

Description

Technical field [0001] The present invention relates to a recording medium, for example, an optical recording medium especially used as a write-once recording medium, and to a recording device, a recording method, a reproduction device, and a reproduction method provided for the recording medium. Background technique [0002] As a technique for recording and reproducing digital data, a data recording technique using an optical disc including a magneto-optical disc as a recording medium is known. Examples of optical discs are CD (Compact Disc), MD (Mini Disc), and DVD (Digital Video Disc). Optical disc is a general term for recording media, which is a thin metal sheet protected by plastic. When the laser beam is irradiated to the optical disc, the optical disc emits a reflection signal, and the change can be read from the reflection signal, and the change represents the information recorded on the optical disc. [0003] Optical discs can be divided into read-only types and writabl...

AI Technical Summary

Problems solved by technology

In addition, if compatibility of applications and media and compatibility of devices and media must be considered among others, the appropriate size of the replacement area cannot be set to the same value

[0017] For the above reasons, it is necessary to allocate as much replacement area as possible or more than actually required from the time of formatting, and a large number of replacement areas has an effect on the method of using the user data area with high efficiency

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