发明授权
- 专利标题： Data reproduction device, method thereof and storage medium
- 专利标题（中）： 数据再现装置，方法和存储介质
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申请号： US09788514申请日： 2001-02-21
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公开(公告)号： US07418393B2公开(公告)日： 2008-08-26
- 发明人: Yukihiro Abiko , Hideo Kato , Tetsuo Koezuka
- 申请人： Yukihiro Abiko , Hideo Kato , Tetsuo Koezuka
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Staas & Halsey LLP
- 优先权： JP2000-157042 20000526
- 主分类号： G10L21/04
- IPC分类号： G10L21/04
摘要：
A frame, which is the data unit, is extracted without decoding MPEG audio data. Then, a scale factor included in the frame is extracted and an evaluation function is calculated based on the scale factor. If the value of the evaluation function is larger than a prescribed threshold value, the speed of the frame is converted. If the value of the evaluation function is smaller than the prescribed threshold value, the frame is judged to be a frame in a silent section and neglected. The speed conversion is made by thinning out frames or repeating the same frame as many times as required according to prescribed rules.