Recording medium and method and appratus for reproducing and recording text subtitle streams
First Claim
1. A recording medium for reproducing text subtitle streams, the recording medium comprising:
- a first data area storing at least one PlayList file, each PlayList file containing a set of PlayItems and a SubPlayItem, each PlayItem being configured to reproduce at least one main AV stream, the SubPlayItem being configured to reproduce at least one text subtitle stream, the PlayList file further containing synchronization information which indicates a presentation start time of the SubPlayItem within a playing time interval of one of the set of PlayItems; and
a second data area storing the at least one main AV stream and the at least one text subtitle stream.
1 Assignment
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Accused Products
Abstract
A recording medium and method and apparatus for reproducing and recording text subtitle streams are disclosed. A PlayList file contains a set of PlayItems and a SubPlayItem. Each PlayItem is configured to reproduce at least one main AV stream, and the SubPlayItem is configured to reproduce at least one text subtitle stream. The PlayList file further contains synchronization information which indicates a presentation start time of the SubPlayItem within a playing time interval of one of the set of PlayItems. The PlayList file, main AV stream, and text subtitle streams are recorded on a recording medium. Each text subtitle stream includes a plurality of dialog presentation segments, each of which includes at least one region of dialog text.
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Citations
14 Claims
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1. A recording medium for reproducing text subtitle streams, the recording medium comprising:
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a first data area storing at least one PlayList file, each PlayList file containing a set of PlayItems and a SubPlayItem, each PlayItem being configured to reproduce at least one main AV stream, the SubPlayItem being configured to reproduce at least one text subtitle stream, the PlayList file further containing synchronization information which indicates a presentation start time of the SubPlayItem within a playing time interval of one of the set of PlayItems; and
a second data area storing the at least one main AV stream and the at least one text subtitle stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A recording medium for reproducing text subtitle streams, the recording medium comprising:
a first data area storing a text subtitle stream including a plurality of dialog presentation segments, each dialog presentation segment containing at least one region of dialog text and specifying presentation start and end times of the at least one region of dialog text, wherein an initial value of a system time clock for the text subtitle stream is a presentation start time of the first dialog presentation segment included in the text subtitle stream. - View Dependent Claims (10)
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11. A method of reproducing text subtitle streams, the method comprising:
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reading a PlayList file recorded on a recording medium;
reading a set of PlayItems and a SubPlayItem included in the PlayList file, each PlayItem being configured to reproduce at least one main AV stream recorded on the recording medium, the SubPlayItem being configured to reproduce at least one text subtitle stream recorded on the recording medium;
reading synchronization information included in the SubPlayItem, the synchronization information including a first data field indicating a PlayItem identification value of one of the set of PlayItems and a second data field indicating a presentation start time of the SubPlayItem within a playing time interval of the PlayItem identified by the PlayItem identification value; and
synchronizing presentation of the SubPlayItem with presentation of the PlayItem identified by the PlayItem identification value.
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12. A method of reproducing text subtitle streams, the method comprising:
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reading a text subtitle stream recorded on a recording medium;
reading a plurality of dialog presentation segments included in the text subtitle stream, each dialog presentation segment containing at least one region of dialog text and specifying presentation start and end times of the at least one region of dialog text;
setting an initial value of a system time clock for the text subtitle stream to a presentation start time of the first dialog presentation segment included in the text subtitle stream; and
presenting the at least one region of dialog text using the presentation start and end times which are based on the system time clock.
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13. An apparatus for reproducing text subtitle streams, the apparatus comprising:
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a driver configured to drive an optical reproducing device to reproduce data recorded on a recording medium; and
a controller configured to control the driver to read at least one PlayList file recorded on the recording medium, each PlayList file containing a set of PlayItems and a SubPlayItem, each PlayItem being configured to reproduce at least one main AV stream, the SubPlayItem being configured to reproduce at least one text subtitle stream, the SubPlayItem including synchronization information which indicates a presentation start time of the SubPlayItem within a playing time interval of one of the set of PlayItems.
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14. An apparatus for reproducing text subtitle streams, the apparatus comprising:
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a driver configured to drive an optical reproducing device to reproduce data recorded on a recording medium; and
a controller configured to control the driver to read a text subtitle stream recorded on the recording medium, the text subtitle stream including a plurality of dialog presentation segments, each dialog presentation segment containing at least one region of dialog text and specifying presentation start and end times of the at least one region of dialog text, wherein an initial value of a system time clock for the text subtitle stream is a presentation start time of the first dialog presentation segment included in the text subtitle stream. Best Available BEST AVAILABLE C
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Specification