Write-once recording medium on which portion of the data is logically overwritten

A recording apparatus for a recording medium having a write-once recordable section in which data is physically writable once, the write-once recordable section including a main data area and a management/control area in which management/control information for recording and playing back data on the main data area is recorded, said recording apparatus comprising:

• writing means for writing data;
• and
• formatting control means for causing the writing means to record the management/control information in the management/control area so as to form in the main data area of the write-once recordable section,
• a normal record and playback sub-area in which data is recorded and played back;
• a rewriting replacement sub-area into which rewritten data is recorded in response to a request to rewrite a portion of the data recorded in the normal record and playback sub-area so as to logically overwrite the portion of the data;
• and
• a replacement management sub-area in which is recorded, in response to the request, replacement management information for managing the portion of the data in the normal record and playback sub-area according to a rewrite request and the rewritten data that is recorded in the rewriting replacement sub-area in response to the rewrite request.

A recording method for recording data onto a recording medium having a write-once recordable section in which data is physically writable once, the write-once recordable section including a main data area and a management/control area in which management/control information for recording and playing back data on the main data area is recorded, wherein the management/control information is recorded in the management/control area, the method comprising:

• recording data to a normal record and playback sub-area of the main data area of the write-once recordable section;
• recording rewritten data into a rewriting replacement sub-area in response to a request to rewrite a portion of the data recorded in the normal record and playback sub-area so as to logically overwrite the portion of the data;
• and
• recording, in response to the request, replacement management information to a replacement management sub-area, the replacement management information being information for managing the portion of the data in the normal record and playback sub-area according to a rewrite request and the rewritten data that is recorded in the rewriting replacement sub-area in response to the rewrite request.

A recording apparatus for a recording medium having a write-once recordable section in which data is physically writable once, the write-once recordable section including a main data area and a management/control area in which management/control information for recording and playing back data on the main data area is recorded, said recording apparatus comprising:

• a writing circuit configured to write data;
• and
• a controller configured to cause the writing means to record the management/control information in the management/control area so as to form in the main data area of the write-once recordable section,
• a normal record and playback sub-area in which data is recorded and played back;
• a rewriting replacement sub-area into which rewritten data is recorded in response to a request to rewrite a portion of the data recorded in the normal record and playback sub-area so as to logically overwrite the portion of the data;
• and
• a replacement management sub-area in which is recorded, in response to the request, replacement management information for managing the portion of the data in the normal record and playback sub-area according to a rewrite request and the rewritten data that is recorded in the rewriting replacement sub-area in response to the rewrite request.