Information recording medium, information recording method and apparatus, and information playback method and apparatus

A method of reproducing information from an information recording medium wherein:

• said information recording medium comprises,
• a first area configured to allow an object file to be recorded therein, the object file including at least one of a video object, a still picture object, and an audio object, the object file including an object recorded extent defined as a continuous area, the object file including an unrecorded extent defined as a continuous area, the unrecorded extent corresponding to an unrecorded area;
• a second area configured to allow PGC control information to be recorded therein, the PGC control information being referred to when the object file recorded in the first area is reproduced;
• a third area configured to allow allocation information to be recorded therein;
• a fourth area provided in the third area configured to allow address information of the object recorded extent and size information of the object recorded extent to be recorded therein;
• a fifth area provided in the third area configured to allow address information of the unrecorded extent and size information of the unrecorded extent to be recorded therein;
• a sixth area provided in the first area configured to allow manufacturer's information to be recorded therein;
• a seventh area provided in the sixth area configured to allow manufacturer ID information to be recorded therein;
• and
• an eighth area provided in the sixth area and located behind the seventh area configured to allow information set by a specific manufacturer to be recorded therein, and
• said method comprises,
• reproducing the PGC control information;
• reproducing the allocation information;
• and
• reproducing the object file according to the allocation information.

A method of recording information on an information recording medium wherein:

• said information recording medium comprises,
• a first area configured to allow an object file to be recorded therein, the object file including at least one of a video object, a still picture object, and an audio object, the object file including an object recorded extent defined as a continuous area, the object file including an unrecorded extent defined as a continuous area, the unrecorded extent corresponding to an unrecorded area;
• a second area configured to allow PGC control information to be recorded therein, the PGC control information being referred to when the object file recorded in the first area is reproduced;
• a third area configured to allow allocation information to be recorded therein;
• a fourth area provided in the third area configured to allow address information of the object recorded extent and size information of the object recorded extent to be recorded therein;
• a fifth area provided in the third area configured to allow address information of the unrecorded extent and size information of the unrecorded extent to be recorded therein;
• a sixth area provided in the first area configured to allow manufacturer's information to be recorded therein;
• a seventh area provided in the sixth area configured to allow manufacturer ID information to be recorded therein;
• and
• an eighth area provided in the sixth area and located behind the seventh area configured to allow information set by a specific manufacturer to be recorded therein, and
• said method comprises,
• recording the object file;
• recording the allocation information;
• and
• recording the PGC control information.

An information reproducing apparatus for reproducing information from an information recording medium wherein:

• said information recording medium comprises,
• a first area configured to allow an object file to be recorded therein, the object file including at least one of a video object, a still picture object, and an audio object, the object file including an object recorded extent defined as a continuous area, the object file including an unrecorded extent defined as a continuous area, the unrecorded extent corresponding to an unrecorded area;
• a second area configured to allow PGC control information to be recorded therein, the PGC control information being referred to when the object file recorded in the first area is reproduced;
• a third area configured to allow allocation information to be recorded therein;
• a fourth area provided in the third area configured to allow address information of the object recorded extent and size information of the object recorded extent to be recorded therein;
• a fifth area provided in the third area configured to allow address information of the unrecorded extent and size information of the unrecorded extent to be recorded therein;
• a sixth area provided in the first area configured to allow manufacturer's information;
• a seventh area provided in the sixth area for manufacturer ID information to be recorded therein;
• and
• an eighth area provided in the sixth area and located behind the seventh area configured to allow information set by a specific manufacturer to be recorded therein, and
• said information reproducing apparatus comprises,
• a decoder configured to decode at least one of the video object, the still picture object, the audio object, and the manufacturer's information.