Information recording medium, apparatus and method for recording or reproducing data thereof

A method for recording at least one object on an information medium, comprising:

• recording the at least one object wherein each object includes a plurality of object units each having an address indicative of a location on the medium;
• and
• recording management information for managing the recorded object on the medium to include object information for each of the at least one object and program chain information including a sequence of cell information, each cell information indicating a playback section of one of the at least one object as a cell and including playback section information indicating start and end portions of a part or whole of the associated object, wherein
• the medium is provided for recording at least one type of object that is a stream object comprising a plurality of object units each having a sector containing a transport packet,
• the cell information further including type information indicating that the type of the object with which the cell is associated is a stream object having a transport packet,
• the object information includes a plurality of kinds of information in a form depending on the type of associated object, the plurality of kinds of information including map information for obtaining an address of each object unit, and
• the object information associated with the stream object includes starting time information and ending time information respectively indicating a starting time and an ending time of the associated stream object.

A reproducing apparatus for reproducing at least one object stored on an information medium, each object comprising a plurality of object units each having an address indicative of a location on the information medium, the apparatus comprising:

• a drive operable to read the at least one object and management information for managing reproduction of the at least one object from the information medium;
• a decoder operable to decode the read at least one object to obtain data to be presented;
• and
• a controller operable to control the drive and the decoder,
• wherein the management information includes object information provided for each object and program chain information that includes a sequence of cell information, each cell information indicating a playback section of one of the at least one object as a cell and including playback section information indicating start and end portions of a part or whole of the associated object,
• wherein at least one type of object is a stream object comprising a plurality of object units each having a sector containing a transport packet, the cell information further includes type information indicating that the type of the object of a part or whole of the associated object is a stream object having a transport packet, the object information includes a plurality of kinds of information in a form depending on the type of corresponding object, the plurality of kinds of information including map information for obtaining an address of each object unit, the object information associated with the stream object includes starting time information and ending time information respectively indicating a starting time and an ending time of the associated stream object, and
• wherein the controller retrieves at least one of the plurality of kinds of information included in the object information based on the type of the object corresponding to each of the cells defined by the sequence of cell information to be reproduced, and the controls the drive to read a part or the whole of the at least one object in accordance with the sequence of cell information to be reproduced by using the retrieved information.

A recording apparatus for recording at least one object on an information medium, comprising:

• a unit for recording the at least object wherein each object includes a plurality of object units each having an address indicative of a location on the medium;
• and
• a unit for recording management information for managing the recorded object on the medium to include object information for each of the at least one object and program chain information including a sequence of cell information, each cell information indicating a playback section of one of the at least one object as a cell and including playback section information indicating start and end portions of a part or whole of the associated object;
• wherein
• the medium is provided for recording at least one type of object that is a stream object comprising a plurality of object units each having a sector containing a transport packet,
• the cell information further including type information indicating that the type of the object with which the cell is associated is a stream object having a transport packet
• the object information includes a plurality of kinds of information in a form depending on the type of associated object, the plurality of kinds of information including map information for obtaining an address of each object unit, and
• the object information associated with the stream object includes starting time information and ending time information respectively indicating a starting time and an ending time of the associated stream object.