Recording medium and method and apparatus for reproducing text subtitle stream recorded on the recording medium

An apparatus for recording at least one text subtitle stream, the apparatus comprising:

• a pickup configured to record data on a computer readable medium;
• and
• a controller configured to control the pickup to record the at least one text subtitle stream, the text subtitle stream including a style segment and at least one presentation segment, the style segment defining a group of region styles, the presentation segment containing at least one region of text and the region of text being linked to a selected one of the group of region styles defined in the style segment by an identifier, the style segment and the at least one presentation segment being encapsulated into respective PES packets,
• the presentation segment further containing a continuous presentation flag indicating whether continuous presentation is required for the presentation segment with a previous presentation segment, presentation start time of the presentation segment is equal to presentation end time of the previous presentation segment when continuous presentation is required for the presentation segment with the previous presentation segment.

A method for reproducing at least one text subtitle stream recorded on a recording medium, the method comprising:

• reading a style segment included in the text subtitle stream, the style segment defining a group of region styles;
• reading at least one presentation segment included in the text subtitle stream, the presentation segment containing at least one region of text and the region of text being linked to a selected one of the group of region styles;
• defined in the style segment by an identifier, the style segment and the at least one presentation segment being encapsulated into respective PES packets;
• and
• presenting the presentation segment according to a continuous presentation flag contained in the presentation segment, the continuous presentation flag indicating whether continuous presentation is required for the presentation segment with a previous presentation segment, presentation start time of the presentation segment is equal to presentation end time of the previous presentation segment when continuous presentation is required for the presentation segment with the previous presentation segment.