Information recording medium, information recording device and method, information reproduction device and method, information recording/reproduction device and method, computer program for controlling recording or reproduction, and data structure including control signal

An information record medium comprising:

• a plurality of content informations;
• a plurality of play list sets each including a plurality of play list informations defining reproduction sequence of the plurality of content informations;
• and
• title information designating at least one play list set, which corresponds to the content informations to be reproduced, from among the plurality of play list sets to reproduce the plurality of content informations as a title, the title being a logical information unit of the plurality of content informations.

An information record apparatus comprising:

• a first record device for recording a plurality of content informations;
• a second record device for recording a plurality of play list sets each including a plurality of play list informations defining reproduction sequence of the plurality of content informations;
• and
• a third record device for recording title information designating at least one play list set, which corresponds to the content information to be reproduced, from among the plurality of play list sets to reproduce the content information as a title, the title being a logical information unit of the content information.

An information record method comprising:

• a first record process of recording a plurality of content informations;
• a second record process of recording a plurality of play list sets each including a plurality of play list informations defining reproduction sequence of the plurality of content informations;
• and
• a third record process of recording title information designating at least one play list set, which corresponds to the content information to be reproduced, from among the plurality of play list sets to reproduce the content information as a title, the title being a logical information unit of the content information.

A data structure including a control signal, said structure comprising:

• a plurality of content informations;
• a plurality of play list sets each including a plurality of play list informations defining reproduction sequence of the plurality of content informations;
• and
• title information designating at least one play list set, which corresponds to the content informations to be reproduced, from among the plurality of play list sets to reproduce the plurality of content informations as a title, the title being a logical information unit of the plurality of content informations.