Digital Broadcast Playback Device and Method, Computer Program, and Storage Medium
First Claim
1. A digital broadcast playback device for playing back AV content included in a broadcast program and executing an application included in the broadcast program, comprising:
- a playback mode judgment unit operable to judge whether the AV content is to be played back in a real-time mode or a time-shift mode;
an application acquisition unit operable to acquire, from a digital stream that contains the broadcast program, applications included in the broadcast program and information showing activation conditions of the respective applications;
a selection unit operable to select;
from the applications, an application whose activation condition is the real-time mode if the AV content is to be played back in the real-time mode, and an application whose activation condition is the time-shift mode if the AV content is to be played back in the time-shift mode; and
an activation unit operable to activate the selected application, with the playback of the AV content.
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Accused Products
Abstract
A digital broadcast playback device for playing back AV content included in a broadcast program and executing an application included in the broadcast program is provided. A playback mode management unit manages whether the AV content is to be played in a real-time mode or in a time-shift mode. A section analysis unit acquires applications included in the broadcast program and information showing activation conditions of the respective applications, from a digital stream containing the broadcast program. A filtering unit selects an application whose activation condition is the real-time mode if the AV content is to be played in the real-time mode, and an application whose activation condition is the time-shift mode if the AV content is to be played in the time-shift mode. An application execution unit activates the selected application, with playback of the AV content.
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Citations
11 Claims
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1. A digital broadcast playback device for playing back AV content included in a broadcast program and executing an application included in the broadcast program, comprising:
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a playback mode judgment unit operable to judge whether the AV content is to be played back in a real-time mode or a time-shift mode;
an application acquisition unit operable to acquire, from a digital stream that contains the broadcast program, applications included in the broadcast program and information showing activation conditions of the respective applications;
a selection unit operable to select;
from the applications, an application whose activation condition is the real-time mode if the AV content is to be played back in the real-time mode, and an application whose activation condition is the time-shift mode if the AV content is to be played back in the time-shift mode; and
an activation unit operable to activate the selected application, with the playback of the AV content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A digital broadcast playback method for use in a playback device for playing back AV content included in a broadcast program and executing an application included in the broadcast program, comprising steps of:
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judging whether the AV content is to be played back in a real-time mode or a time-shift mode;
acquiring, from a digital stream that contains the broadcast program, applications included in the broadcast program and information showing activation conditions of the respective applications;
selecting, from the applications, an application whose activation condition is the real-time mode if the AV content is to be played back in the real-time mode, and an application whose activation condition is the time-shift mode if the AV content is to be played back in the time-shift mode; and
activating the selected application, with the playback of the AV content.
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10. A computer program used in a computer for playing back AV content included in a broadcast program and executing an application included in the broadcast program, comprising:
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program code operable to cause the computer to judge whether the AV content is to be played back in a real-time mode or a time-shift mode;
program code operable to cause the computer to acquire, from a digital stream that contains the broadcast program, applications included in the broadcast program and information showing activation conditions of the respective applications;
program code operable to cause the computer to select, from the applications, an application whose activation condition is the real-time mode if the AV content is to be played back in the real-time mode, and an application whose activation condition is the time-shift mode if the AV content is to be played back in the time-shift mode; and
program code operable to cause the computer to activate the selected application, with the playback of the AV content.
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11. A computer-readable storage medium storing a computer program used in a computer for playing back AV content included in a broadcast program and executing an application included in the broadcast program, the computer program comprising:
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program code operable to cause the computer to judge whether the AV content is to be played back in a real-time mode or a time-shift mode;
program code operable to cause the computer to acquire, from a digital stream that contains the broadcast program, applications included in the broadcast program and information showing activation conditions of the respective applications;
program code operable to cause the computer to select, from the applications, an application whose activation condition is the real-time mode if the AV content is to be played back in the real-time mode, and an application whose activation condition is the time-shift mode if the AV content is to be played back in the time-shift mode; and
program code operable to cause the computer to activate the selected application, with the playback of the AV content.
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Specification