Write once recording medium, recorder and recording method for write once recording medium, reproducer and reproducing method for write once recording medium, computer program for controlling recording or reproduction, and data structure

Abstract

A write-once-type recording medium (100) on which record data can be recorded only once, provided with: a data area (108) to record therein the record data; and a shared area (104, 105) to temporarily record therein evacuation data which is record data to be recorded or already recorded at a position of a defect in the data area and defect management information (120) including an evacuation source address of the evacuation data, the evacuation data being recorded with one predetermined point which exists in the shared area as a start point, the defect management information being recorded with another predetermined point which exists at a different point from the one point as a start point, in the shared area.

Description

TECHNICAL FIELD [0001] The present invention relates to a write-once-type recording medium, an apparatus for and a method of recording record data onto the write-once-type recording medium, an apparatus for and a method of reproducing the record data recorded on the write-once-type recording medium, a computer program for recording or reproduction control, and a data structure. BACKGROUND ART [0002] As a technique of improving the reliability of the recording and reading of record data on a high-density recording medium, such as an optical disc, a magnetic disc, and a magneto optical disc, there is defect management. Namely, if there are scratches or dusts, or deterioration (which are collectively referred to as a “defect”) on the recording medium, data to be recorded or already recorded at the position of the defect is recorded into another area on the recording medium (which is referred to as a “spare area”). As described above, by evacuating, to the spare area, the record data wh...

AI Technical Summary

Benefits of technology

[0011] It is therefore an object of the present invention to provide: a write-once-type recording medium which allows the efficient and maximum use of the recording capacity of the recording medium and which allows proper defect management; an apparatus for and a method of recording the record data onto the write-once-type recording medium; an apparatus for and a method of reproducing the record data recorded on the write-once-type recording medium, a computer program used on the recording or reproducing apparatus, and a data structure.

[0083] Moreover, according to the recording apparatus or method of the present invention, it is provided with the first recording device and the second recording device, or the first recording process and the second recording process, respectively. Thus, it is possible to properly record the record data onto the write-once-type recording medium of the present invention. Moreover, according to the reproducing apparatus or method of the present invention, it is provided with the reading device and the reproducing device, or the reading process and the reproducing process, respectively. Thus, it is possible to properly read and reproduce the record data from the write-once-type recording medium of the present invention.

Problems solved by technology

However such additional recording causes the following problem, in terms of the disc standard.

Namely, if it is difficult to record more defect lists because of a limit in the recording capacity of the defect management area, for example, it is difficult or impossible to generate a new defect list even if there is a space area in the spare area.

Alternatively, if it is difficult to record more data to be recorded or already recorded at the position of a defect into the spare area because of a limit in the recording capacity of the spare area, it is difficult to record a new defect list even if there is a space area in the defect management area.

Therefore, there is such a technical problem that although there is a space area on the recording medium, it is not possible to record the data any more onto the disc since the defect management cannot be performed.

Images