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

Abstract

In the write-once medium, by using a selected area such as an area starting from an appendix recording point in the main data area as a replacement area, by determining in a request such as a write request based on information on a continuous recording range Whether or not the designated address is an address on which data has already been recorded, and recording pieces of information by letting a plurality of pieces of information for replacing a defective position on the medium and for updating data recorded on the medium coexist in a table, can be used with Other locations replace defective locations on the medium and thus data already recorded on the medium can be updated without even providing a pre-allocated replacement area on the medium. Also, if a medium is provided with a replacement area and the replacement area becomes insufficient for replacement address processing, a selected area in the main data area can be used as an area to supplement the insufficient replacement area. An example of this area is the area starting from the above-mentioned appendix recording point.

Description

technical field [0001] The present invention relates to a recording medium, such as an optical recording medium used especially as a write-once recording medium, and to a recording device, a recording method, a reproducing device, and a reproducing 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 disk including a magneto-optical disk as a recording medium is known. Examples of optical disks are CD (Compact Disc Read Only), MD (MiniDisc) and DVD (Digital Video Disc). Optical disc is a general term for a recording medium, which is a thin sheet of metal protected by plastic. When a laser beam hits an optical disc, the optical disc emits a reflected signal from which changes can be read, said changes representing information recorded on the optical disc. [0003] Optical discs can be classified into a read-only class including CDs, CD-ROMs, and DVD-ROMs...

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

Images