Audio frequency shifting during video trick modes
AssigneeThomson Licensing
InventorsRonald Lynn Blair, Mark Alan Schultz, Robert Warren Schmidt
Life of this patent
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Abstract
The invention concerns a method and apparatus for audio content playback during fast forward playback video trick modes. A storage medium reader is provided for reading coded digital data from a storage medium such as a DVD. The coded digital data comprises a video programming and a corresponding audio programming. A decoder decodes from a portion of the digital data comprising the audio programming a plurality of digital audio samples corresponding to a selected portion of the video programming. Subsequently, an audio processor key shifts a playback audio pitch associated with the audio samples to compensate for the higher pitched audio associated with the fast forward video playback mode.
Claims18
A method for audio content playback during video trick mode playback, comprising:
- reading coded digital data from a storage medium, said coded digital data comprising a video programming and corresponding audio programming;
- decoding from a portion of said digital data comprising said audio programming a plurality of digital audio samples corresponding to a selected portion of the video programming;
- repeating or drooping selected ones of said digital audio samples at a rate corresponding to a selected trick mode video playback speed of said video programming;
- and
- key shifting a playback audio pitch associated with said audio samples to compensate for said trick mode playback.
Hardware apparatus for audio signal playback during video trick mode playback, comprising:
- a storage medium reader for reading a coded digital data from a storage medium, said coded digital data comprising a video signal and a corresponding audio signal;
- a decoder for decoding from a portion of said digital data comprising said audio signal a plurality of digital audio samples corresponding to a selected portion of the video signal and for repeating or dropping selected ones of said digital audio samples at a rate corresponding to a selected trick mode video playback speed of said video presentation;
- and
- an audio processor for key shifting a playback audio pitch associated with said audio samples to compensate for said trick mode playback.
Dependencies are inferred from the claim text.