Method and apparatus of recording a multi-channel stream, and a recording medium containing a multi-channel stream recorded by said method

A method of recording a data structure for managing reproduction of at least video data representing multiple reproduction paths, the method comprising:

• recording a transport stream of at least video data on a recording medium, the transport stream being divided into transport packets;
• recording at least a first navigation data item and a second navigation data item;
• and
• recording a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data,
• wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files.

A method of reproducing at least video data representing multiple reproduction paths, the method comprising:

• reproducing at least a first navigation data item and a second navigation data item from a navigation area of a recording medium;
• reproducing a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data, wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files;
• and
• reproducing a transport stream of at least video data from the recording medium according to the navigation data item and the separate file, the transport stream being divided into transport packets.

An apparatus for recording a data structure for managing reproduction of at least video data representing multiple reproduction paths, the apparatus comprising:

• a recording unit being configured to record data on a recording medium;
• and
• a controller, operably coupled to the recording unit, being configured to control the recording unit to record a transport stream of at least video data on a data area of the recording medium, the transport stream being divided into transport packets, the controller being configured to further control the recording unit to record at least a first navigation data item and a second navigation data item on a navigation area of the recording medium, and the controller being configured to further control the recording unit to record a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data,
• wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files.

An apparatus for reproducing at least video data representing multiple reproduction paths, the apparatus comprising:

• a reproducing unit being configured to reproduce data recorded on a recording medium;
• and
• a controller, operably coupled to the reproducing unit, being configured to control the reproducing unit to reproduce at least a first navigation data item and a second navigation data item from a navigation area of the recording medium, and the controller being configured to further control the reproducing unit to reproduce a plurality of files, each file including a map identifying transport packets associated with one of the reproduction paths, each map providing relation information between presentation time and transport packets of the associated reproduction path and not including video data, the first navigation data item referencing more than one map for reproducing transport packets associated with multiple reproduction paths and not including video data, the second navigation data item referencing a single map for reproducing transport packets associated with a single reproduction path and not including video data, wherein the first navigation data item indicates multiple files of the plurality of files, and wherein the second navigation data item indicates a single file of the plurality of files, and the controller being configured to further control the reproducing unit to reproduce a transport stream of at least video data from a data area of the recording medium according to the navigation data items and the separate files, the transport stream being divided into the transport packets.