Closed caption control apparatus and method therefor
AssigneeKabushiki Kaisha Toshiba
InventorsKohei Momosaki, Koichi Yamamoto, Yasuyuki Masai, Makoto Yajima, Kazuhiko Abe, Munehiko Sasajima
Life of this patent
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Abstract
A closed caption display controller to control a display mode of a closed caption corresponding to a speech of an audio signal, the controller comprises an analysis unit to analyze the speech on a speech quality, an examination unit configured to examine a speech listening level according to a given rule based on an analysis result of the analysis unit, and a determination unit to determine a display mode according to an examination result of the examination unit.
Claims8
A digital video disk player using a digital video disk to store digital information including video data, audio data including speech, and closed caption data, comprising:
- a video player unit configured to extract the video data from the digital information,
- an audio player unit configured to read out the audio data to generate the audio signal, and
- a closed caption display controller, which is supplied with the audio signal, the closed caption display controller to control a display mode of a closed caption corresponding to a speech of an audio signal obtained by mixing the speech and a background sound or background music, the controller comprising,
- an analysis unit configured to analyze the audio signal to obtain a plurality of analysis values including a background level about the background sound or the background music,
- an examination unit configured to examine a difficulty in listening the speech by comparing the plurality of analysis values with a plurality of reference values including at least a reference value of the background level, and
- a determination unit configured to determine a display mode of the closed caption image according to an examination result of the examination unit.
A contents player to play back contents including video data, audio data including a speech, and closed caption data, comprising:
- a contents receiver to receive the contents,
- a video player unit configured to separate the video data from the contents,
- an audio player unit configured to separate the audio data from the contents to generate the audio signal, and
- a closed caption display controller, which is supplied with the audio signal, the closed caption display controller being configured to control a display mode of a closed caption corresponding to a speech of an audio signal obtained by mixing the speech and a background sound or background music, the controller comprising,
- an analysis unit configured to analyze the audio signal to obtain a plurality of analysis values including a background level about the background sound or the background music,
- an examination unit configured to examine a difficulty in listening the speech by comparing the plurality of analysis values with a plurality of reference values including at least a reference value of the background level, and
- a determination unit configured to determine a display mode of the closed caption image according to an examination result of the examination unit.
Dependencies are inferred from the claim text.