发明名称 |
Audio frequency scaling during video trick modes utilizing digital signal processing |
摘要 |
The invention concerns a method and apparatus for audio track playback during fast forward playback video trick modes. A storage medium reader is provided for reading digital data from a storage medium such as a DVD. The digital data represents a video presentation 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 presentation. Subsequently, a digital signal processor can convert the audio samples to their corresponding frequency domain equivalents and scale the frequency and amplitude of a playback audio frequency associated with the audio samples in accordance with trick mode video playback.
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申请公布号 |
US2003165084(A1) |
申请公布日期 |
2003.09.04 |
申请号 |
US20020086649 |
申请日期 |
2002.03.01 |
申请人 |
BLAIR RONALD LYNN;SCHULTZ MARK ALAN;SCHMIDT ROBERT WARREN |
发明人 |
BLAIR RONALD LYNN;SCHULTZ MARK ALAN;SCHMIDT ROBERT WARREN |
分类号 |
G11B20/10;G10L19/00;G10L21/02;G10L21/04;H04N5/783;H04N7/16;(IPC1-7):H04N5/783;G04B21/02;G04C23/00 |
主分类号 |
G11B20/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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