发明授权
- 专利标题： Wobble detection for playback of optical recording media
- 专利标题（中）： 摇摆检测用于播放光学记录介质
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申请号： US10975787申请日： 2004-10-28
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公开(公告)号： US07436740B2公开(公告)日： 2008-10-14
- 发明人: Pierluigi Lo Muzio , Friedrich Heizmann
- 申请人： Pierluigi Lo Muzio , Friedrich Heizmann
- 申请人地址： FR Boulogne-Billancourt
- 专利权人： Thomson Licensing
- 当前专利权人： Thomson Licensing
- 当前专利权人地址： FR Boulogne-Billancourt
- 代理商 Joseph J. Laks; Harvey D. Fried
- 优先权： EP03024862 20031031
- 主分类号： G11B5/09
- IPC分类号： G11B5/09
摘要：
The present invention relates to a method and a device for detecting the type of wobble on an optical recording medium. According to the invention, a programmable digitally tuned oscillator is provided for detecting the wobble at different frequencies and the wobble signal is converted to the base band. Favorably the consistency of the phase of the wobble together with the amplitude of the wobble is used for verifying the presence of the wobble. For this purpose a Cartesian to Polar converter is provided.
公开/授权文献
- US20050094520A1 Wobble detection for playback of optical recording media 公开/授权日：2005-05-05
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