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

Abstract

A digital stream signal complying with MPEG-TS is handled as stream object ESOB. The ESOB is recorded in unit of stream object unit ESOBU which includes one or more pack/packet groups. Each pack/packet group has a pack/packet group header at its head position, and stores one or more TS packets after the pack/packet group header.

1 . (canceled)  
   
   
       2 . An information medium comprising one or more data areas configured to store object information, and a management area configured to store management information for managing the object information, wherein 
 one of said data areas is configured to record stream object using a stream object unit in which contained are packet groups each including a packet group header and multiple pairs of packet arrival time information and MPEG transport stream packet, and    the management information to be stored in said management area includes stream object unit size information describing a size of the stream object unit, said size relating to a number of the MPEG transport stream packets, and target address information of the stream object unit of which size is described by said stream object unit size information.    
   
   
       3 . A method of recording information on an information medium comprising one or more data areas configured to store object information, and a management area configured to store management information for managing the object information, wherein one of said data areas is configured to record stream object using a stream object unit in which contained are packet groups each including a packet group header and multiple pairs of packet arrival time information and MPEG transport stream packet, and the management information to be stored in said management area includes stream object unit size information describing a size of the stream object unit, said size relating to a number of the MPEG transport stream packets, and target address information of the stream object unit of which size is described by said stream object unit size information, said method comprising: 
 recording the stream object on the data area, and    recording the management information on the management area.    
   
   
       4 . A method of reproducing information from an information medium comprising one or more data areas configured to store object information, and a management area configured to store management information for managing the object information, wherein one of said data areas is configured to record stream object using a stream object unit in which contained are packet groups each including a packet group header and multiple pairs of packet arrival time information and MPEG transport stream packet, and the management information to be stored in said management area includes stream object unit size information describing a size of the stream object unit, said size relating to a number of the MPEG transport stream packets, and target address information of the stream object unit of which size is described by said stream object unit size information, said method comprising: 
 reproducing the management information from the management area, and    reproducing the stream object from the data area.    
   
   
       5 . A recording apparatus for recording information on the information medium as defined in  claim 2 , said apparatus comprising: 
 a first recorder configured to record the stream object on the data area, and    a second recorder configured to record the management information on the management area.    
   
   
       6 . A reproducing apparatus for reproducing information from the information medium as defined in  claim 2 , said apparatus comprising: 
 a first reproducer configured to reproduce the management information from the management area, and    a second reproducer configured to reproduce the stream object from the data area.