Optical disk, optical disk recording/reproducing apparatus and method thereof

A disk recording medium, comprising:

• a cell including data, the cell being set as a reproduction and recording unit;
• and
• information representing a position from a start of the cell to a specific position and which is accessed by a recording and/or reproducing apparatus to access the specific position during reproduction of the cell,
• wherein the position from the start of the cell to the specific position is defined as a reproduction time.

A recording medium, comprising:

• audio and/or video data;
• a cell for logically dealing with the audio and/or video data;
• and
• part of title information indicating a specific area in the cell relative to a predetermined position of the cell and which is accessed by a recording and/or reproducing apparatus to access the specific area during reproduction of the cell.

A recording medium, comprising:

• audio and/or video data;
• a cell for logically dealing with the audio and/or video data;
• and
• part of title information indicating a specific area in the cell,
• wherein the part of title information comprises;
• information representing a position from a start of the cell to a specific position and which is accessed by a recording and/or reproducing apparatus to access the specific position during reproduction of the cell.

A rewritable disk comprising:

• real-time audio and/or video data recorded in a cell;
• and
• part of title information based upon the real-time audio and/or video data and which includes information on a position of the cell relative to a predetermined position,
• wherein:
• the part of title information is recorded after the real-time audio and/or video data is recorded and is used by a recording and/or reproduction apparatus to access a portion of the real-time audio and/or video data recorded in the position in the cell, and
• the cell and the part of title information are written on a rewritable area of the disk.

A rewritable disk comprising:

• audio and/or video data;
• a cell for logically dealing with the audio and/or video data;
• and
• information enabling random access to a specific position in the cell and which is used by a recording and/or reproduction apparatus to access a portion of the and/or video data recorded in the specific position in the cell,
• wherein the cell and the part of title information are written on a rewritable area of the disk.